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Unneccessary AGG sources removed. Added libpng and zlib sources and static build in cmake.

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tamasmeszaros 2018-05-21 15:56:35 +02:00
parent 6b5c0073a7
commit e6e078cbf7
377 changed files with 108760 additions and 31984 deletions
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31
xs/CMakeLists.txt
View file

@ -332,18 +332,39 @@ add_library(semver STATIC
${LIBDIR}/semver/semver.c
)
# ##############################################################################
# Configure rasterizer target
# ##############################################################################
find_package(PNG REQUIRED)
option(RASTERIZER_USE_SYSTEM_LIBPNG "Use the libpng present in system instead of
the provided copy." OFF)
add_library(rasterizer STATIC
${LIBDIR}/libslic3r/Rasterizer/Rasterizer.hpp
${LIBDIR}/libslic3r/Rasterizer/Rasterizer.cpp
)
target_link_libraries(rasterizer ${PNG_LIBRARIES})
target_include_directories(rasterizer PRIVATE ${PNG_INCLUDE_DIRS})
target_compile_definitions(rasterizer PRIVATE ${PNG_DEFINITIONS})
target_link_libraries(libslic3r rasterizer)
if(RASTERIZER_USE_SYSTEM_LIBPNG)
find_package(PNG REQUIRED)
target_link_libraries(rasterizer PRIVATE ${PNG_LIBRARIES})
target_include_directories(rasterizer PRIVATE ${PNG_INCLUDE_DIRS})
target_compile_definitions(rasterizer PRIVATE ${PNG_DEFINITIONS})
else()
add_subdirectory( ${LIBDIR}/png/zlib)
add_subdirectory( ${LIBDIR}/png/libpng )
target_include_directories( png_static PRIVATE
${LIBDIR}/png/zlib
${CMAKE_CURRENT_BINARY_DIR}/src/png/zlib
)
target_link_libraries(rasterizer PRIVATE png_static zlibstatic)
endif()
target_link_libraries(libslic3r rasterizer )
# ##############################################################################
# Generate the Slic3r Perl module (XS) typemap file.
set(MyTypemap ${CMAKE_CURRENT_BINARY_DIR}/typemap)

2
xs/src/agg/AUTHORS Normal file
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@ -0,0 +1,2 @@
Anti-Grain Geometry - Version 2.4
Copyright (C) 2002-2005 Maxim Shemanarev (McSeem)

499
xs/src/agg/agg_alpha_mask_u8.h
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@ -1,499 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// scanline_u8 class
//
//----------------------------------------------------------------------------
#ifndef AGG_ALPHA_MASK_U8_INCLUDED
#define AGG_ALPHA_MASK_U8_INCLUDED
#include <string.h>
#include "agg_basics.h"
#include "agg_rendering_buffer.h"
namespace agg
{
//===================================================one_component_mask_u8
struct one_component_mask_u8
{
static unsigned calculate(const int8u* p) { return *p; }
};
//=====================================================rgb_to_gray_mask_u8
template<unsigned R, unsigned G, unsigned B>
struct rgb_to_gray_mask_u8
{
static unsigned calculate(const int8u* p)
{
return (p[R]*77 + p[G]*150 + p[B]*29) >> 8;
}
};
//==========================================================alpha_mask_u8
template<unsigned Step=1, unsigned Offset=0, class MaskF=one_component_mask_u8>
class alpha_mask_u8
{
public:
typedef int8u cover_type;
typedef alpha_mask_u8<Step, Offset, MaskF> self_type;
enum cover_scale_e
{
cover_shift = 8,
cover_none = 0,
cover_full = 255
};
alpha_mask_u8() : m_rbuf(0) {}
explicit alpha_mask_u8(rendering_buffer& rbuf) : m_rbuf(&rbuf) {}
void attach(rendering_buffer& rbuf) { m_rbuf = &rbuf; }
MaskF& mask_function() { return m_mask_function; }
const MaskF& mask_function() const { return m_mask_function; }
//--------------------------------------------------------------------
cover_type pixel(int x, int y) const
{
if(x >= 0 && y >= 0 &&
x < (int)m_rbuf->width() &&
y < (int)m_rbuf->height())
{
return (cover_type)m_mask_function.calculate(
m_rbuf->row_ptr(y) + x * Step + Offset);
}
return 0;
}
//--------------------------------------------------------------------
cover_type combine_pixel(int x, int y, cover_type val) const
{
if(x >= 0 && y >= 0 &&
x < (int)m_rbuf->width() &&
y < (int)m_rbuf->height())
{
return (cover_type)((cover_full + val *
m_mask_function.calculate(
m_rbuf->row_ptr(y) + x * Step + Offset)) >>
cover_shift);
}
return 0;
}
//--------------------------------------------------------------------
void fill_hspan(int x, int y, cover_type* dst, int num_pix) const
{
int xmax = m_rbuf->width() - 1;
int ymax = m_rbuf->height() - 1;
int count = num_pix;
cover_type* covers = dst;
if(y < 0 || y > ymax)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
if(x < 0)
{
count += x;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers, 0, -x * sizeof(cover_type));
covers -= x;
x = 0;
}
if(x + count > xmax)
{
int rest = x + count - xmax - 1;
count -= rest;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers + count, 0, rest * sizeof(cover_type));
}
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*covers++ = (cover_type)m_mask_function.calculate(mask);
mask += Step;
}
while(--count);
}
//--------------------------------------------------------------------
void combine_hspan(int x, int y, cover_type* dst, int num_pix) const
{
int xmax = m_rbuf->width() - 1;
int ymax = m_rbuf->height() - 1;
int count = num_pix;
cover_type* covers = dst;
if(y < 0 || y > ymax)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
if(x < 0)
{
count += x;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers, 0, -x * sizeof(cover_type));
covers -= x;
x = 0;
}
if(x + count > xmax)
{
int rest = x + count - xmax - 1;
count -= rest;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers + count, 0, rest * sizeof(cover_type));
}
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*covers = (cover_type)((cover_full + (*covers) *
m_mask_function.calculate(mask)) >>
cover_shift);
++covers;
mask += Step;
}
while(--count);
}
//--------------------------------------------------------------------
void fill_vspan(int x, int y, cover_type* dst, int num_pix) const
{
int xmax = m_rbuf->width() - 1;
int ymax = m_rbuf->height() - 1;
int count = num_pix;
cover_type* covers = dst;
if(x < 0 || x > xmax)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
if(y < 0)
{
count += y;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers, 0, -y * sizeof(cover_type));
covers -= y;
y = 0;
}
if(y + count > ymax)
{
int rest = y + count - ymax - 1;
count -= rest;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers + count, 0, rest * sizeof(cover_type));
}
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*covers++ = (cover_type)m_mask_function.calculate(mask);
mask += m_rbuf->stride();
}
while(--count);
}
//--------------------------------------------------------------------
void combine_vspan(int x, int y, cover_type* dst, int num_pix) const
{
int xmax = m_rbuf->width() - 1;
int ymax = m_rbuf->height() - 1;
int count = num_pix;
cover_type* covers = dst;
if(x < 0 || x > xmax)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
if(y < 0)
{
count += y;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers, 0, -y * sizeof(cover_type));
covers -= y;
y = 0;
}
if(y + count > ymax)
{
int rest = y + count - ymax - 1;
count -= rest;
if(count <= 0)
{
memset(dst, 0, num_pix * sizeof(cover_type));
return;
}
memset(covers + count, 0, rest * sizeof(cover_type));
}
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*covers = (cover_type)((cover_full + (*covers) *
m_mask_function.calculate(mask)) >>
cover_shift);
++covers;
mask += m_rbuf->stride();
}
while(--count);
}
private:
alpha_mask_u8(const self_type&);
const self_type& operator = (const self_type&);
rendering_buffer* m_rbuf;
MaskF m_mask_function;
};
typedef alpha_mask_u8<1, 0> alpha_mask_gray8; //----alpha_mask_gray8
typedef alpha_mask_u8<3, 0> alpha_mask_rgb24r; //----alpha_mask_rgb24r
typedef alpha_mask_u8<3, 1> alpha_mask_rgb24g; //----alpha_mask_rgb24g
typedef alpha_mask_u8<3, 2> alpha_mask_rgb24b; //----alpha_mask_rgb24b
typedef alpha_mask_u8<3, 2> alpha_mask_bgr24r; //----alpha_mask_bgr24r
typedef alpha_mask_u8<3, 1> alpha_mask_bgr24g; //----alpha_mask_bgr24g
typedef alpha_mask_u8<3, 0> alpha_mask_bgr24b; //----alpha_mask_bgr24b
typedef alpha_mask_u8<4, 0> alpha_mask_rgba32r; //----alpha_mask_rgba32r
typedef alpha_mask_u8<4, 1> alpha_mask_rgba32g; //----alpha_mask_rgba32g
typedef alpha_mask_u8<4, 2> alpha_mask_rgba32b; //----alpha_mask_rgba32b
typedef alpha_mask_u8<4, 3> alpha_mask_rgba32a; //----alpha_mask_rgba32a
typedef alpha_mask_u8<4, 1> alpha_mask_argb32r; //----alpha_mask_argb32r
typedef alpha_mask_u8<4, 2> alpha_mask_argb32g; //----alpha_mask_argb32g
typedef alpha_mask_u8<4, 3> alpha_mask_argb32b; //----alpha_mask_argb32b
typedef alpha_mask_u8<4, 0> alpha_mask_argb32a; //----alpha_mask_argb32a
typedef alpha_mask_u8<4, 2> alpha_mask_bgra32r; //----alpha_mask_bgra32r
typedef alpha_mask_u8<4, 1> alpha_mask_bgra32g; //----alpha_mask_bgra32g
typedef alpha_mask_u8<4, 0> alpha_mask_bgra32b; //----alpha_mask_bgra32b
typedef alpha_mask_u8<4, 3> alpha_mask_bgra32a; //----alpha_mask_bgra32a
typedef alpha_mask_u8<4, 3> alpha_mask_abgr32r; //----alpha_mask_abgr32r
typedef alpha_mask_u8<4, 2> alpha_mask_abgr32g; //----alpha_mask_abgr32g
typedef alpha_mask_u8<4, 1> alpha_mask_abgr32b; //----alpha_mask_abgr32b
typedef alpha_mask_u8<4, 0> alpha_mask_abgr32a; //----alpha_mask_abgr32a
typedef alpha_mask_u8<3, 0, rgb_to_gray_mask_u8<0, 1, 2> > alpha_mask_rgb24gray; //----alpha_mask_rgb24gray
typedef alpha_mask_u8<3, 0, rgb_to_gray_mask_u8<2, 1, 0> > alpha_mask_bgr24gray; //----alpha_mask_bgr24gray
typedef alpha_mask_u8<4, 0, rgb_to_gray_mask_u8<0, 1, 2> > alpha_mask_rgba32gray; //----alpha_mask_rgba32gray
typedef alpha_mask_u8<4, 1, rgb_to_gray_mask_u8<0, 1, 2> > alpha_mask_argb32gray; //----alpha_mask_argb32gray
typedef alpha_mask_u8<4, 0, rgb_to_gray_mask_u8<2, 1, 0> > alpha_mask_bgra32gray; //----alpha_mask_bgra32gray
typedef alpha_mask_u8<4, 1, rgb_to_gray_mask_u8<2, 1, 0> > alpha_mask_abgr32gray; //----alpha_mask_abgr32gray
//==========================================================amask_no_clip_u8
template<unsigned Step=1, unsigned Offset=0, class MaskF=one_component_mask_u8>
class amask_no_clip_u8
{
public:
typedef int8u cover_type;
typedef amask_no_clip_u8<Step, Offset, MaskF> self_type;
enum cover_scale_e
{
cover_shift = 8,
cover_none = 0,
cover_full = 255
};
amask_no_clip_u8() : m_rbuf(0) {}
explicit amask_no_clip_u8(rendering_buffer& rbuf) : m_rbuf(&rbuf) {}
void attach(rendering_buffer& rbuf) { m_rbuf = &rbuf; }
MaskF& mask_function() { return m_mask_function; }
const MaskF& mask_function() const { return m_mask_function; }
//--------------------------------------------------------------------
cover_type pixel(int x, int y) const
{
return (cover_type)m_mask_function.calculate(
m_rbuf->row_ptr(y) + x * Step + Offset);
}
//--------------------------------------------------------------------
cover_type combine_pixel(int x, int y, cover_type val) const
{
return (cover_type)((cover_full + val *
m_mask_function.calculate(
m_rbuf->row_ptr(y) + x * Step + Offset)) >>
cover_shift);
}
//--------------------------------------------------------------------
void fill_hspan(int x, int y, cover_type* dst, int num_pix) const
{
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*dst++ = (cover_type)m_mask_function.calculate(mask);
mask += Step;
}
while(--num_pix);
}
//--------------------------------------------------------------------
void combine_hspan(int x, int y, cover_type* dst, int num_pix) const
{
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*dst = (cover_type)((cover_full + (*dst) *
m_mask_function.calculate(mask)) >>
cover_shift);
++dst;
mask += Step;
}
while(--num_pix);
}
//--------------------------------------------------------------------
void fill_vspan(int x, int y, cover_type* dst, int num_pix) const
{
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*dst++ = (cover_type)m_mask_function.calculate(mask);
mask += m_rbuf->stride();
}
while(--num_pix);
}
//--------------------------------------------------------------------
void combine_vspan(int x, int y, cover_type* dst, int num_pix) const
{
const int8u* mask = m_rbuf->row_ptr(y) + x * Step + Offset;
do
{
*dst = (cover_type)((cover_full + (*dst) *
m_mask_function.calculate(mask)) >>
cover_shift);
++dst;
mask += m_rbuf->stride();
}
while(--num_pix);
}
private:
amask_no_clip_u8(const self_type&);
const self_type& operator = (const self_type&);
rendering_buffer* m_rbuf;
MaskF m_mask_function;
};
typedef amask_no_clip_u8<1, 0> amask_no_clip_gray8; //----amask_no_clip_gray8
typedef amask_no_clip_u8<3, 0> amask_no_clip_rgb24r; //----amask_no_clip_rgb24r
typedef amask_no_clip_u8<3, 1> amask_no_clip_rgb24g; //----amask_no_clip_rgb24g
typedef amask_no_clip_u8<3, 2> amask_no_clip_rgb24b; //----amask_no_clip_rgb24b
typedef amask_no_clip_u8<3, 2> amask_no_clip_bgr24r; //----amask_no_clip_bgr24r
typedef amask_no_clip_u8<3, 1> amask_no_clip_bgr24g; //----amask_no_clip_bgr24g
typedef amask_no_clip_u8<3, 0> amask_no_clip_bgr24b; //----amask_no_clip_bgr24b
typedef amask_no_clip_u8<4, 0> amask_no_clip_rgba32r; //----amask_no_clip_rgba32r
typedef amask_no_clip_u8<4, 1> amask_no_clip_rgba32g; //----amask_no_clip_rgba32g
typedef amask_no_clip_u8<4, 2> amask_no_clip_rgba32b; //----amask_no_clip_rgba32b
typedef amask_no_clip_u8<4, 3> amask_no_clip_rgba32a; //----amask_no_clip_rgba32a
typedef amask_no_clip_u8<4, 1> amask_no_clip_argb32r; //----amask_no_clip_argb32r
typedef amask_no_clip_u8<4, 2> amask_no_clip_argb32g; //----amask_no_clip_argb32g
typedef amask_no_clip_u8<4, 3> amask_no_clip_argb32b; //----amask_no_clip_argb32b
typedef amask_no_clip_u8<4, 0> amask_no_clip_argb32a; //----amask_no_clip_argb32a
typedef amask_no_clip_u8<4, 2> amask_no_clip_bgra32r; //----amask_no_clip_bgra32r
typedef amask_no_clip_u8<4, 1> amask_no_clip_bgra32g; //----amask_no_clip_bgra32g
typedef amask_no_clip_u8<4, 0> amask_no_clip_bgra32b; //----amask_no_clip_bgra32b
typedef amask_no_clip_u8<4, 3> amask_no_clip_bgra32a; //----amask_no_clip_bgra32a
typedef amask_no_clip_u8<4, 3> amask_no_clip_abgr32r; //----amask_no_clip_abgr32r
typedef amask_no_clip_u8<4, 2> amask_no_clip_abgr32g; //----amask_no_clip_abgr32g
typedef amask_no_clip_u8<4, 1> amask_no_clip_abgr32b; //----amask_no_clip_abgr32b
typedef amask_no_clip_u8<4, 0> amask_no_clip_abgr32a; //----amask_no_clip_abgr32a
typedef amask_no_clip_u8<3, 0, rgb_to_gray_mask_u8<0, 1, 2> > amask_no_clip_rgb24gray; //----amask_no_clip_rgb24gray
typedef amask_no_clip_u8<3, 0, rgb_to_gray_mask_u8<2, 1, 0> > amask_no_clip_bgr24gray; //----amask_no_clip_bgr24gray
typedef amask_no_clip_u8<4, 0, rgb_to_gray_mask_u8<0, 1, 2> > amask_no_clip_rgba32gray; //----amask_no_clip_rgba32gray
typedef amask_no_clip_u8<4, 1, rgb_to_gray_mask_u8<0, 1, 2> > amask_no_clip_argb32gray; //----amask_no_clip_argb32gray
typedef amask_no_clip_u8<4, 0, rgb_to_gray_mask_u8<2, 1, 0> > amask_no_clip_bgra32gray; //----amask_no_clip_bgra32gray
typedef amask_no_clip_u8<4, 1, rgb_to_gray_mask_u8<2, 1, 0> > amask_no_clip_abgr32gray; //----amask_no_clip_abgr32gray
}
#endif

74
xs/src/agg/agg_arc.h
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@ -1,74 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Arc vertex generator
//
//----------------------------------------------------------------------------
#ifndef AGG_ARC_INCLUDED
#define AGG_ARC_INCLUDED
#include <math.h>
#include "agg_basics.h"
namespace agg
{
//=====================================================================arc
//
// See Implementation agg_arc.cpp
//
class arc
{
public:
arc() : m_scale(1.0), m_initialized(false) {}
arc(double x, double y,
double rx, double ry,
double a1, double a2,
bool ccw=true);
void init(double x, double y,
double rx, double ry,
double a1, double a2,
bool ccw=true);
void approximation_scale(double s);
double approximation_scale() const { return m_scale; }
void rewind(unsigned);
unsigned vertex(double* x, double* y);
private:
void normalize(double a1, double a2, bool ccw);
double m_x;
double m_y;
double m_rx;
double m_ry;
double m_angle;
double m_start;
double m_end;
double m_scale;
double m_da;
bool m_ccw;
bool m_initialized;
unsigned m_path_cmd;
};
}
#endif

82
xs/src/agg/agg_arrowhead.h
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@ -1,82 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Simple arrowhead/arrowtail generator
//
//----------------------------------------------------------------------------
#ifndef AGG_ARROWHEAD_INCLUDED
#define AGG_ARROWHEAD_INCLUDED
#include "agg_basics.h"
namespace agg
{
//===============================================================arrowhead
//
// See implementation agg_arrowhead.cpp
//
class arrowhead
{
public:
arrowhead();
void head(double d1, double d2, double d3, double d4)
{
m_head_d1 = d1;
m_head_d2 = d2;
m_head_d3 = d3;
m_head_d4 = d4;
m_head_flag = true;
}
void head() { m_head_flag = true; }
void no_head() { m_head_flag = false; }
void tail(double d1, double d2, double d3, double d4)
{
m_tail_d1 = d1;
m_tail_d2 = d2;
m_tail_d3 = d3;
m_tail_d4 = d4;
m_tail_flag = true;
}
void tail() { m_tail_flag = true; }
void no_tail() { m_tail_flag = false; }
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
double m_head_d1;
double m_head_d2;
double m_head_d3;
double m_head_d4;
double m_tail_d1;
double m_tail_d2;
double m_tail_d3;
double m_tail_d4;
bool m_head_flag;
bool m_tail_flag;
double m_coord[16];
unsigned m_cmd[8];
unsigned m_curr_id;
unsigned m_curr_coord;
};
}
#endif

54
xs/src/agg/agg_bitset_iterator.h
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@ -1,54 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_BITSET_ITERATOR_INCLUDED
#define AGG_BITSET_ITERATOR_INCLUDED
#include "agg_basics.h"
namespace agg
{
class bitset_iterator
{
public:
bitset_iterator(const int8u* bits, unsigned offset = 0) :
m_bits(bits + (offset >> 3)),
m_mask(0x80 >> (offset & 7))
{}
void operator ++ ()
{
m_mask >>= 1;
if(m_mask == 0)
{
++m_bits;
m_mask = 0x80;
}
}
unsigned bit() const
{
return (*m_bits) & m_mask;
}
private:
const int8u* m_bits;
int8u m_mask;
};
}
#endif

1503
xs/src/agg/agg_blur.h
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116
xs/src/agg/agg_bounding_rect.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// bounding_rect function template
//
//----------------------------------------------------------------------------
#ifndef AGG_BOUNDING_RECT_INCLUDED
#define AGG_BOUNDING_RECT_INCLUDED
#include "agg_basics.h"
namespace agg
{
//-----------------------------------------------------------bounding_rect
template<class VertexSource, class GetId, class CoordT>
bool bounding_rect(VertexSource& vs, GetId& gi,
unsigned start, unsigned num,
CoordT* x1, CoordT* y1, CoordT* x2, CoordT* y2)
{
unsigned i;
double x;
double y;
bool first = true;
*x1 = CoordT(1);
*y1 = CoordT(1);
*x2 = CoordT(0);
*y2 = CoordT(0);
for(i = 0; i < num; i++)
{
vs.rewind(gi[start + i]);
unsigned cmd;
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
if(is_vertex(cmd))
{
if(first)
{
*x1 = CoordT(x);
*y1 = CoordT(y);
*x2 = CoordT(x);
*y2 = CoordT(y);
first = false;
}
else
{
if(CoordT(x) < *x1) *x1 = CoordT(x);
if(CoordT(y) < *y1) *y1 = CoordT(y);
if(CoordT(x) > *x2) *x2 = CoordT(x);
if(CoordT(y) > *y2) *y2 = CoordT(y);
}
}
}
}
return *x1 <= *x2 && *y1 <= *y2;
}
//-----------------------------------------------------bounding_rect_single
template<class VertexSource, class CoordT>
bool bounding_rect_single(VertexSource& vs, unsigned path_id,
CoordT* x1, CoordT* y1, CoordT* x2, CoordT* y2)
{
double x;
double y;
bool first = true;
*x1 = CoordT(1);
*y1 = CoordT(1);
*x2 = CoordT(0);
*y2 = CoordT(0);
vs.rewind(path_id);
unsigned cmd;
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
if(is_vertex(cmd))
{
if(first)
{
*x1 = CoordT(x);
*y1 = CoordT(y);
*x2 = CoordT(x);
*y2 = CoordT(y);
first = false;
}
else
{
if(CoordT(x) < *x1) *x1 = CoordT(x);
if(CoordT(y) < *y1) *y1 = CoordT(y);
if(CoordT(x) > *x2) *x2 = CoordT(x);
if(CoordT(y) > *y2) *y2 = CoordT(y);
}
}
}
return *x1 <= *x2 && *y1 <= *y2;
}
}
#endif

76
xs/src/agg/agg_bspline.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// class bspline
//
//----------------------------------------------------------------------------
#ifndef AGG_BSPLINE_INCLUDED
#define AGG_BSPLINE_INCLUDED
#include "agg_array.h"
namespace agg
{
//----------------------------------------------------------------bspline
// A very simple class of Bi-cubic Spline interpolation.
// First call init(num, x[], y[]) where num - number of source points,
// x, y - arrays of X and Y values respectively. Here Y must be a function
// of X. It means that all the X-coordinates must be arranged in the ascending
// order.
// Then call get(x) that calculates a value Y for the respective X.
// The class supports extrapolation, i.e. you can call get(x) where x is
// outside the given with init() X-range. Extrapolation is a simple linear
// function.
//
// See Implementation agg_bspline.cpp
//------------------------------------------------------------------------
class bspline
{
public:
bspline();
bspline(int num);
bspline(int num, const double* x, const double* y);
void init(int num);
void add_point(double x, double y);
void prepare();
void init(int num, const double* x, const double* y);
double get(double x) const;
double get_stateful(double x) const;
private:
bspline(const bspline&);
const bspline& operator = (const bspline&);
static void bsearch(int n, const double *x, double x0, int *i);
double extrapolation_left(double x) const;
double extrapolation_right(double x) const;
double interpolation(double x, int i) const;
int m_max;
int m_num;
double* m_x;
double* m_y;
pod_array<double> m_am;
mutable int m_last_idx;
};
}
#endif

157
xs/src/agg/agg_conv_adaptor_vcgen.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_ADAPTOR_VCGEN_INCLUDED
#define AGG_CONV_ADAPTOR_VCGEN_INCLUDED
#include "agg_basics.h"
namespace agg
{
//------------------------------------------------------------null_markers
struct null_markers
{
void remove_all() {}
void add_vertex(double, double, unsigned) {}
void prepare_src() {}
void rewind(unsigned) {}
unsigned vertex(double*, double*) { return path_cmd_stop; }
};
//------------------------------------------------------conv_adaptor_vcgen
template<class VertexSource,
class Generator,
class Markers=null_markers> class conv_adaptor_vcgen
{
enum status
{
initial,
accumulate,
generate
};
public:
explicit conv_adaptor_vcgen(VertexSource& source) :
m_source(&source),
m_status(initial)
{}
void attach(VertexSource& source) { m_source = &source; }
Generator& generator() { return m_generator; }
const Generator& generator() const { return m_generator; }
Markers& markers() { return m_markers; }
const Markers& markers() const { return m_markers; }
void rewind(unsigned path_id)
{
m_source->rewind(path_id);
m_status = initial;
}
unsigned vertex(double* x, double* y);
private:
// Prohibit copying
conv_adaptor_vcgen(const conv_adaptor_vcgen<VertexSource, Generator, Markers>&);
const conv_adaptor_vcgen<VertexSource, Generator, Markers>&
operator = (const conv_adaptor_vcgen<VertexSource, Generator, Markers>&);
VertexSource* m_source;
Generator m_generator;
Markers m_markers;
status m_status;
unsigned m_last_cmd;
double m_start_x;
double m_start_y;
};
//------------------------------------------------------------------------
template<class VertexSource, class Generator, class Markers>
unsigned conv_adaptor_vcgen<VertexSource, Generator, Markers>::vertex(double* x, double* y)
{
unsigned cmd = path_cmd_stop;
bool done = false;
while(!done)
{
switch(m_status)
{
case initial:
m_markers.remove_all();
m_last_cmd = m_source->vertex(&m_start_x, &m_start_y);
m_status = accumulate;
case accumulate:
if(is_stop(m_last_cmd)) return path_cmd_stop;
m_generator.remove_all();
m_generator.add_vertex(m_start_x, m_start_y, path_cmd_move_to);
m_markers.add_vertex(m_start_x, m_start_y, path_cmd_move_to);
for(;;)
{
cmd = m_source->vertex(x, y);
if(is_vertex(cmd))
{
m_last_cmd = cmd;
if(is_move_to(cmd))
{
m_start_x = *x;
m_start_y = *y;
break;
}
m_generator.add_vertex(*x, *y, cmd);
m_markers.add_vertex(*x, *y, path_cmd_line_to);
}
else
{
if(is_stop(cmd))
{
m_last_cmd = path_cmd_stop;
break;
}
if(is_end_poly(cmd))
{
m_generator.add_vertex(*x, *y, cmd);
break;
}
}
}
m_generator.rewind(0);
m_status = generate;
case generate:
cmd = m_generator.vertex(x, y);
if(is_stop(cmd))
{
m_status = accumulate;
break;
}
done = true;
break;
}
}
return cmd;
}
}
#endif

159
xs/src/agg/agg_conv_adaptor_vpgen.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_ADAPTOR_VPGEN_INCLUDED
#define AGG_CONV_ADAPTOR_VPGEN_INCLUDED
#include "agg_basics.h"
namespace agg
{
//======================================================conv_adaptor_vpgen
template<class VertexSource, class VPGen> class conv_adaptor_vpgen
{
public:
explicit conv_adaptor_vpgen(VertexSource& source) : m_source(&source) {}
void attach(VertexSource& source) { m_source = &source; }
VPGen& vpgen() { return m_vpgen; }
const VPGen& vpgen() const { return m_vpgen; }
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
conv_adaptor_vpgen(const conv_adaptor_vpgen<VertexSource, VPGen>&);
const conv_adaptor_vpgen<VertexSource, VPGen>&
operator = (const conv_adaptor_vpgen<VertexSource, VPGen>&);
VertexSource* m_source;
VPGen m_vpgen;
double m_start_x;
double m_start_y;
unsigned m_poly_flags;
int m_vertices;
};
//------------------------------------------------------------------------
template<class VertexSource, class VPGen>
void conv_adaptor_vpgen<VertexSource, VPGen>::rewind(unsigned path_id)
{
m_source->rewind(path_id);
m_vpgen.reset();
m_start_x = 0;
m_start_y = 0;
m_poly_flags = 0;
m_vertices = 0;
}
//------------------------------------------------------------------------
template<class VertexSource, class VPGen>
unsigned conv_adaptor_vpgen<VertexSource, VPGen>::vertex(double* x, double* y)
{
unsigned cmd = path_cmd_stop;
for(;;)
{
cmd = m_vpgen.vertex(x, y);
if(!is_stop(cmd)) break;
if(m_poly_flags && !m_vpgen.auto_unclose())
{
*x = 0.0;
*y = 0.0;
cmd = m_poly_flags;
m_poly_flags = 0;
break;
}
if(m_vertices < 0)
{
if(m_vertices < -1)
{
m_vertices = 0;
return path_cmd_stop;
}
m_vpgen.move_to(m_start_x, m_start_y);
m_vertices = 1;
continue;
}
double tx, ty;
cmd = m_source->vertex(&tx, &ty);
if(is_vertex(cmd))
{
if(is_move_to(cmd))
{
if(m_vpgen.auto_close() && m_vertices > 2)
{
m_vpgen.line_to(m_start_x, m_start_y);
m_poly_flags = path_cmd_end_poly | path_flags_close;
m_start_x = tx;
m_start_y = ty;
m_vertices = -1;
continue;
}
m_vpgen.move_to(tx, ty);
m_start_x = tx;
m_start_y = ty;
m_vertices = 1;
}
else
{
m_vpgen.line_to(tx, ty);
++m_vertices;
}
}
else
{
if(is_end_poly(cmd))
{
m_poly_flags = cmd;
if(is_closed(cmd) || m_vpgen.auto_close())
{
if(m_vpgen.auto_close()) m_poly_flags |= path_flags_close;
if(m_vertices > 2)
{
m_vpgen.line_to(m_start_x, m_start_y);
}
m_vertices = 0;
}
}
else
{
// path_cmd_stop
if(m_vpgen.auto_close() && m_vertices > 2)
{
m_vpgen.line_to(m_start_x, m_start_y);
m_poly_flags = path_cmd_end_poly | path_flags_close;
m_vertices = -2;
continue;
}
break;
}
}
}
return cmd;
}
}
#endif

48
xs/src/agg/agg_conv_bspline.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_BSPLINE_INCLUDED
#define AGG_CONV_BSPLINE_INCLUDED
#include "agg_basics.h"
#include "agg_vcgen_bspline.h"
#include "agg_conv_adaptor_vcgen.h"
namespace agg
{
//---------------------------------------------------------conv_bspline
template<class VertexSource>
struct conv_bspline : public conv_adaptor_vcgen<VertexSource, vcgen_bspline>
{
typedef conv_adaptor_vcgen<VertexSource, vcgen_bspline> base_type;
conv_bspline(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_bspline>(vs) {}
void interpolation_step(double v) { base_type::generator().interpolation_step(v); }
double interpolation_step() const { return base_type::generator().interpolation_step(); }
private:
conv_bspline(const conv_bspline<VertexSource>&);
const conv_bspline<VertexSource>&
operator = (const conv_bspline<VertexSource>&);
};
}
#endif

63
xs/src/agg/agg_conv_clip_polygon.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Polygon clipping converter
// There an optimized Liang-Basky algorithm is used.
// The algorithm doesn't optimize the degenerate edges, i.e. it will never
// break a closed polygon into two or more ones, instead, there will be
// degenerate edges coinciding with the respective clipping boundaries.
// This is a sub-optimal solution, because that optimization would require
// extra, rather expensive math while the rasterizer tolerates it quite well,
// without any considerable overhead.
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CLIP_POLYGON_INCLUDED
#define AGG_CONV_CLIP_POLYGON_INCLUDED
#include "agg_basics.h"
#include "agg_conv_adaptor_vpgen.h"
#include "agg_vpgen_clip_polygon.h"
namespace agg
{
//=======================================================conv_clip_polygon
template<class VertexSource>
struct conv_clip_polygon : public conv_adaptor_vpgen<VertexSource, vpgen_clip_polygon>
{
typedef conv_adaptor_vpgen<VertexSource, vpgen_clip_polygon> base_type;
conv_clip_polygon(VertexSource& vs) :
conv_adaptor_vpgen<VertexSource, vpgen_clip_polygon>(vs) {}
void clip_box(double x1, double y1, double x2, double y2)
{
base_type::vpgen().clip_box(x1, y1, x2, y2);
}
double x1() const { return base_type::vpgen().x1(); }
double y1() const { return base_type::vpgen().y1(); }
double x2() const { return base_type::vpgen().x2(); }
double y2() const { return base_type::vpgen().y2(); }
private:
conv_clip_polygon(const conv_clip_polygon<VertexSource>&);
const conv_clip_polygon<VertexSource>&
operator = (const conv_clip_polygon<VertexSource>&);
};
}
#endif

63
xs/src/agg/agg_conv_clip_polyline.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// polyline clipping converter
// There an optimized Liang-Basky algorithm is used.
// The algorithm doesn't optimize the degenerate edges, i.e. it will never
// break a closed polyline into two or more ones, instead, there will be
// degenerate edges coinciding with the respective clipping boundaries.
// This is a sub-optimal solution, because that optimization would require
// extra, rather expensive math while the rasterizer tolerates it quite well,
// without any considerable overhead.
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CLIP_polyline_INCLUDED
#define AGG_CONV_CLIP_polyline_INCLUDED
#include "agg_basics.h"
#include "agg_conv_adaptor_vpgen.h"
#include "agg_vpgen_clip_polyline.h"
namespace agg
{
//=======================================================conv_clip_polyline
template<class VertexSource>
struct conv_clip_polyline : public conv_adaptor_vpgen<VertexSource, vpgen_clip_polyline>
{
typedef conv_adaptor_vpgen<VertexSource, vpgen_clip_polyline> base_type;
conv_clip_polyline(VertexSource& vs) :
conv_adaptor_vpgen<VertexSource, vpgen_clip_polyline>(vs) {}
void clip_box(double x1, double y1, double x2, double y2)
{
base_type::vpgen().clip_box(x1, y1, x2, y2);
}
double x1() const { return base_type::vpgen().x1(); }
double y1() const { return base_type::vpgen().y1(); }
double x2() const { return base_type::vpgen().x2(); }
double y2() const { return base_type::vpgen().y2(); }
private:
conv_clip_polyline(const conv_clip_polyline<VertexSource>&);
const conv_clip_polyline<VertexSource>&
operator = (const conv_clip_polyline<VertexSource>&);
};
}
#endif

125
xs/src/agg/agg_conv_close_polygon.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CLOSE_POLYGON_INCLUDED
#define AGG_CONV_CLOSE_POLYGON_INCLUDED
#include "agg_basics.h"
namespace agg
{
//======================================================conv_close_polygon
template<class VertexSource> class conv_close_polygon
{
public:
explicit conv_close_polygon(VertexSource& vs) : m_source(&vs) {}
void attach(VertexSource& source) { m_source = &source; }
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
conv_close_polygon(const conv_close_polygon<VertexSource>&);
const conv_close_polygon<VertexSource>&
operator = (const conv_close_polygon<VertexSource>&);
VertexSource* m_source;
unsigned m_cmd[2];
double m_x[2];
double m_y[2];
unsigned m_vertex;
bool m_line_to;
};
//------------------------------------------------------------------------
template<class VertexSource>
void conv_close_polygon<VertexSource>::rewind(unsigned path_id)
{
m_source->rewind(path_id);
m_vertex = 2;
m_line_to = false;
}
//------------------------------------------------------------------------
template<class VertexSource>
unsigned conv_close_polygon<VertexSource>::vertex(double* x, double* y)
{
unsigned cmd = path_cmd_stop;
for(;;)
{
if(m_vertex < 2)
{
*x = m_x[m_vertex];
*y = m_y[m_vertex];
cmd = m_cmd[m_vertex];
++m_vertex;
break;
}
cmd = m_source->vertex(x, y);
if(is_end_poly(cmd))
{
cmd |= path_flags_close;
break;
}
if(is_stop(cmd))
{
if(m_line_to)
{
m_cmd[0] = path_cmd_end_poly | path_flags_close;
m_cmd[1] = path_cmd_stop;
m_vertex = 0;
m_line_to = false;
continue;
}
break;
}
if(is_move_to(cmd))
{
if(m_line_to)
{
m_x[0] = 0.0;
m_y[0] = 0.0;
m_cmd[0] = path_cmd_end_poly | path_flags_close;
m_x[1] = *x;
m_y[1] = *y;
m_cmd[1] = cmd;
m_vertex = 0;
m_line_to = false;
continue;
}
break;
}
if(is_vertex(cmd))
{
m_line_to = true;
break;
}
}
return cmd;
}
}
#endif

73
xs/src/agg/agg_conv_concat.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CONCAT_INCLUDED
#define AGG_CONV_CONCAT_INCLUDED
#include "agg_basics.h"
namespace agg
{
//=============================================================conv_concat
// Concatenation of two paths. Usually used to combine lines or curves
// with markers such as arrowheads
template<class VS1, class VS2> class conv_concat
{
public:
conv_concat(VS1& source1, VS2& source2) :
m_source1(&source1), m_source2(&source2), m_status(2) {}
void attach1(VS1& source) { m_source1 = &source; }
void attach2(VS2& source) { m_source2 = &source; }
void rewind(unsigned path_id)
{
m_source1->rewind(path_id);
m_source2->rewind(0);
m_status = 0;
}
unsigned vertex(double* x, double* y)
{
unsigned cmd;
if(m_status == 0)
{
cmd = m_source1->vertex(x, y);
if(!is_stop(cmd)) return cmd;
m_status = 1;
}
if(m_status == 1)
{
cmd = m_source2->vertex(x, y);
if(!is_stop(cmd)) return cmd;
m_status = 2;
}
return path_cmd_stop;
}
private:
conv_concat(const conv_concat<VS1, VS2>&);
const conv_concat<VS1, VS2>&
operator = (const conv_concat<VS1, VS2>&);
VS1* m_source1;
VS2* m_source2;
int m_status;
};
}
#endif

65
xs/src/agg/agg_conv_contour.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// conv_stroke
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CONTOUR_INCLUDED
#define AGG_CONV_CONTOUR_INCLUDED
#include "agg_basics.h"
#include "agg_vcgen_contour.h"
#include "agg_conv_adaptor_vcgen.h"
namespace agg
{
//-----------------------------------------------------------conv_contour
template<class VertexSource>
struct conv_contour : public conv_adaptor_vcgen<VertexSource, vcgen_contour>
{
typedef conv_adaptor_vcgen<VertexSource, vcgen_contour> base_type;
conv_contour(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_contour>(vs)
{
}
void line_join(line_join_e lj) { base_type::generator().line_join(lj); }
void inner_join(inner_join_e ij) { base_type::generator().inner_join(ij); }
void width(double w) { base_type::generator().width(w); }
void miter_limit(double ml) { base_type::generator().miter_limit(ml); }
void miter_limit_theta(double t) { base_type::generator().miter_limit_theta(t); }
void inner_miter_limit(double ml) { base_type::generator().inner_miter_limit(ml); }
void approximation_scale(double as) { base_type::generator().approximation_scale(as); }
void auto_detect_orientation(bool v) { base_type::generator().auto_detect_orientation(v); }
line_join_e line_join() const { return base_type::generator().line_join(); }
inner_join_e inner_join() const { return base_type::generator().inner_join(); }
double width() const { return base_type::generator().width(); }
double miter_limit() const { return base_type::generator().miter_limit(); }
double inner_miter_limit() const { return base_type::generator().inner_miter_limit(); }
double approximation_scale() const { return base_type::generator().approximation_scale(); }
bool auto_detect_orientation() const { return base_type::generator().auto_detect_orientation(); }
private:
conv_contour(const conv_contour<VertexSource>&);
const conv_contour<VertexSource>&
operator = (const conv_contour<VertexSource>&);
};
}
#endif

201
xs/src/agg/agg_conv_curve.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// classes conv_curve
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_CURVE_INCLUDED
#define AGG_CONV_CURVE_INCLUDED
#include "agg_basics.h"
#include "agg_curves.h"
namespace agg
{
//---------------------------------------------------------------conv_curve
// Curve converter class. Any path storage can have Bezier curves defined
// by their control points. There're two types of curves supported: curve3
// and curve4. Curve3 is a conic Bezier curve with 2 endpoints and 1 control
// point. Curve4 has 2 control points (4 points in total) and can be used
// to interpolate more complicated curves. Curve4, unlike curve3 can be used
// to approximate arcs, both circular and elliptical. Curves are approximated
// with straight lines and one of the approaches is just to store the whole
// sequence of vertices that approximate our curve. It takes additional
// memory, and at the same time the consecutive vertices can be calculated
// on demand.
//
// Initially, path storages are not suppose to keep all the vertices of the
// curves (although, nothing prevents us from doing so). Instead, path_storage
// keeps only vertices, needed to calculate a curve on demand. Those vertices
// are marked with special commands. So, if the path_storage contains curves
// (which are not real curves yet), and we render this storage directly,
// all we will see is only 2 or 3 straight line segments (for curve3 and
// curve4 respectively). If we need to see real curves drawn we need to
// include this class into the conversion pipeline.
//
// Class conv_curve recognizes commands path_cmd_curve3 and path_cmd_curve4
// and converts these vertices into a move_to/line_to sequence.
//-----------------------------------------------------------------------
template<class VertexSource,
class Curve3=curve3,
class Curve4=curve4> class conv_curve
{
public:
typedef Curve3 curve3_type;
typedef Curve4 curve4_type;
typedef conv_curve<VertexSource, Curve3, Curve4> self_type;
explicit conv_curve(VertexSource& source) :
m_source(&source), m_last_x(0.0), m_last_y(0.0) {}
void attach(VertexSource& source) { m_source = &source; }
void approximation_method(curve_approximation_method_e v)
{
m_curve3.approximation_method(v);
m_curve4.approximation_method(v);
}
curve_approximation_method_e approximation_method() const
{
return m_curve4.approximation_method();
}
void approximation_scale(double s)
{
m_curve3.approximation_scale(s);
m_curve4.approximation_scale(s);
}
double approximation_scale() const
{
return m_curve4.approximation_scale();
}
void angle_tolerance(double v)
{
m_curve3.angle_tolerance(v);
m_curve4.angle_tolerance(v);
}
double angle_tolerance() const
{
return m_curve4.angle_tolerance();
}
void cusp_limit(double v)
{
m_curve3.cusp_limit(v);
m_curve4.cusp_limit(v);
}
double cusp_limit() const
{
return m_curve4.cusp_limit();
}
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
conv_curve(const self_type&);
const self_type& operator = (const self_type&);
VertexSource* m_source;
double m_last_x;
double m_last_y;
curve3_type m_curve3;
curve4_type m_curve4;
};
//------------------------------------------------------------------------
template<class VertexSource, class Curve3, class Curve4>
void conv_curve<VertexSource, Curve3, Curve4>::rewind(unsigned path_id)
{
m_source->rewind(path_id);
m_last_x = 0.0;
m_last_y = 0.0;
m_curve3.reset();
m_curve4.reset();
}
//------------------------------------------------------------------------
template<class VertexSource, class Curve3, class Curve4>
unsigned conv_curve<VertexSource, Curve3, Curve4>::vertex(double* x, double* y)
{
if(!is_stop(m_curve3.vertex(x, y)))
{
m_last_x = *x;
m_last_y = *y;
return path_cmd_line_to;
}
if(!is_stop(m_curve4.vertex(x, y)))
{
m_last_x = *x;
m_last_y = *y;
return path_cmd_line_to;
}
double ct2_x = 0;
double ct2_y = 0;
double end_x = 0;
double end_y = 0;
unsigned cmd = m_source->vertex(x, y);
switch(cmd)
{
case path_cmd_curve3:
m_source->vertex(&end_x, &end_y);
m_curve3.init(m_last_x, m_last_y,
*x, *y,
end_x, end_y);
m_curve3.vertex(x, y); // First call returns path_cmd_move_to
m_curve3.vertex(x, y); // This is the first vertex of the curve
cmd = path_cmd_line_to;
break;
case path_cmd_curve4:
m_source->vertex(&ct2_x, &ct2_y);
m_source->vertex(&end_x, &end_y);
m_curve4.init(m_last_x, m_last_y,
*x, *y,
ct2_x, ct2_y,
end_x, end_y);
m_curve4.vertex(x, y); // First call returns path_cmd_move_to
m_curve4.vertex(x, y); // This is the first vertex of the curve
cmd = path_cmd_line_to;
break;
}
m_last_x = *x;
m_last_y = *y;
return cmd;
}
}
#endif

68
xs/src/agg/agg_conv_dash.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// conv_dash
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_DASH_INCLUDED
#define AGG_CONV_DASH_INCLUDED
#include "agg_basics.h"
#include "agg_vcgen_dash.h"
#include "agg_conv_adaptor_vcgen.h"
namespace agg
{
//---------------------------------------------------------------conv_dash
template<class VertexSource, class Markers=null_markers>
struct conv_dash : public conv_adaptor_vcgen<VertexSource, vcgen_dash, Markers>
{
typedef Markers marker_type;
typedef conv_adaptor_vcgen<VertexSource, vcgen_dash, Markers> base_type;
conv_dash(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_dash, Markers>(vs)
{
}
void remove_all_dashes()
{
base_type::generator().remove_all_dashes();
}
void add_dash(double dash_len, double gap_len)
{
base_type::generator().add_dash(dash_len, gap_len);
}
void dash_start(double ds)
{
base_type::generator().dash_start(ds);
}
void shorten(double s) { base_type::generator().shorten(s); }
double shorten() const { return base_type::generator().shorten(); }
private:
conv_dash(const conv_dash<VertexSource, Markers>&);
const conv_dash<VertexSource, Markers>&
operator = (const conv_dash<VertexSource, Markers>&);
};
}
#endif

432
xs/src/agg/agg_conv_gpc.h
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@ -1,432 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// General Polygon Clipper based on the GPC library by Alan Murta
// Union, Intersection, XOR, A-B, B-A
// Contact the author if you intend to use it in commercial applications!
// http://www.cs.man.ac.uk/aig/staff/alan/software/
// Alan Murta (email: gpc@cs.man.ac.uk)
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_GPC_INCLUDED
#define AGG_CONV_GPC_INCLUDED
#include <math.h>
#include "agg_basics.h"
#include "agg_array.h"
extern "C"
{
#include "gpc.h"
}
namespace agg
{
enum gpc_op_e
{
gpc_or,
gpc_and,
gpc_xor,
gpc_a_minus_b,
gpc_b_minus_a
};
//================================================================conv_gpc
template<class VSA, class VSB> class conv_gpc
{
enum status
{
status_move_to,
status_line_to,
status_stop
};
struct contour_header_type
{
int num_vertices;
int hole_flag;
gpc_vertex* vertices;
};
typedef pod_bvector<gpc_vertex, 8> vertex_array_type;
typedef pod_bvector<contour_header_type, 6> contour_header_array_type;
public:
typedef VSA source_a_type;
typedef VSB source_b_type;
typedef conv_gpc<source_a_type, source_b_type> self_type;
~conv_gpc()
{
free_gpc_data();
}
conv_gpc(source_a_type& a, source_b_type& b, gpc_op_e op = gpc_or) :
m_src_a(&a),
m_src_b(&b),
m_status(status_move_to),
m_vertex(-1),
m_contour(-1),
m_operation(op)
{
memset(&m_poly_a, 0, sizeof(m_poly_a));
memset(&m_poly_b, 0, sizeof(m_poly_b));
memset(&m_result, 0, sizeof(m_result));
}
void attach1(VSA& source) { m_src_a = &source; }
void attach2(VSB& source) { m_src_b = &source; }
void operation(gpc_op_e v) { m_operation = v; }
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
conv_gpc(const conv_gpc<VSA, VSB>&);
const conv_gpc<VSA, VSB>& operator = (const conv_gpc<VSA, VSB>&);
//--------------------------------------------------------------------
void free_polygon(gpc_polygon& p);
void free_result();
void free_gpc_data();
void start_contour();
void add_vertex(double x, double y);
void end_contour(unsigned orientation);
void make_polygon(gpc_polygon& p);
void start_extracting();
bool next_contour();
bool next_vertex(double* x, double* y);
//--------------------------------------------------------------------
template<class VS> void add(VS& src, gpc_polygon& p)
{
unsigned cmd;
double x, y;
double start_x = 0.0;
double start_y = 0.0;
bool line_to = false;
unsigned orientation = 0;
m_contour_accumulator.remove_all();
while(!is_stop(cmd = src.vertex(&x, &y)))
{
if(is_vertex(cmd))
{
if(is_move_to(cmd))
{
if(line_to)
{
end_contour(orientation);
orientation = 0;
}
start_contour();
start_x = x;
start_y = y;
}
add_vertex(x, y);
line_to = true;
}
else
{
if(is_end_poly(cmd))
{
orientation = get_orientation(cmd);
if(line_to && is_closed(cmd))
{
add_vertex(start_x, start_y);
}
}
}
}
if(line_to)
{
end_contour(orientation);
}
make_polygon(p);
}
private:
//--------------------------------------------------------------------
source_a_type* m_src_a;
source_b_type* m_src_b;
status m_status;
int m_vertex;
int m_contour;
gpc_op_e m_operation;
vertex_array_type m_vertex_accumulator;
contour_header_array_type m_contour_accumulator;
gpc_polygon m_poly_a;
gpc_polygon m_poly_b;
gpc_polygon m_result;
};
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::free_polygon(gpc_polygon& p)
{
int i;
for(i = 0; i < p.num_contours; i++)
{
pod_allocator<gpc_vertex>::deallocate(p.contour[i].vertex,
p.contour[i].num_vertices);
}
pod_allocator<gpc_vertex_list>::deallocate(p.contour, p.num_contours);
memset(&p, 0, sizeof(gpc_polygon));
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::free_result()
{
if(m_result.contour)
{
gpc_free_polygon(&m_result);
}
memset(&m_result, 0, sizeof(m_result));
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::free_gpc_data()
{
free_polygon(m_poly_a);
free_polygon(m_poly_b);
free_result();
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::start_contour()
{
contour_header_type h;
memset(&h, 0, sizeof(h));
m_contour_accumulator.add(h);
m_vertex_accumulator.remove_all();
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
inline void conv_gpc<VSA, VSB>::add_vertex(double x, double y)
{
gpc_vertex v;
v.x = x;
v.y = y;
m_vertex_accumulator.add(v);
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::end_contour(unsigned /*orientation*/)
{
if(m_contour_accumulator.size())
{
if(m_vertex_accumulator.size() > 2)
{
contour_header_type& h =
m_contour_accumulator[m_contour_accumulator.size() - 1];
h.num_vertices = m_vertex_accumulator.size();
h.hole_flag = 0;
// TO DO: Clarify the "holes"
//if(is_cw(orientation)) h.hole_flag = 1;
h.vertices = pod_allocator<gpc_vertex>::allocate(h.num_vertices);
gpc_vertex* d = h.vertices;
int i;
for(i = 0; i < h.num_vertices; i++)
{
const gpc_vertex& s = m_vertex_accumulator[i];
d->x = s.x;
d->y = s.y;
++d;
}
}
else
{
m_vertex_accumulator.remove_last();
}
}
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::make_polygon(gpc_polygon& p)
{
free_polygon(p);
if(m_contour_accumulator.size())
{
p.num_contours = m_contour_accumulator.size();
p.hole = 0;
p.contour = pod_allocator<gpc_vertex_list>::allocate(p.num_contours);
int i;
gpc_vertex_list* pv = p.contour;
for(i = 0; i < p.num_contours; i++)
{
const contour_header_type& h = m_contour_accumulator[i];
pv->num_vertices = h.num_vertices;
pv->vertex = h.vertices;
++pv;
}
}
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::start_extracting()
{
m_status = status_move_to;
m_contour = -1;
m_vertex = -1;
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
bool conv_gpc<VSA, VSB>::next_contour()
{
if(++m_contour < m_result.num_contours)
{
m_vertex = -1;
return true;
}
return false;
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
inline bool conv_gpc<VSA, VSB>::next_vertex(double* x, double* y)
{
const gpc_vertex_list& vlist = m_result.contour[m_contour];
if(++m_vertex < vlist.num_vertices)
{
const gpc_vertex& v = vlist.vertex[m_vertex];
*x = v.x;
*y = v.y;
return true;
}
return false;
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
void conv_gpc<VSA, VSB>::rewind(unsigned path_id)
{
free_result();
m_src_a->rewind(path_id);
m_src_b->rewind(path_id);
add(*m_src_a, m_poly_a);
add(*m_src_b, m_poly_b);
switch(m_operation)
{
case gpc_or:
gpc_polygon_clip(GPC_UNION,
&m_poly_a,
&m_poly_b,
&m_result);
break;
case gpc_and:
gpc_polygon_clip(GPC_INT,
&m_poly_a,
&m_poly_b,
&m_result);
break;
case gpc_xor:
gpc_polygon_clip(GPC_XOR,
&m_poly_a,
&m_poly_b,
&m_result);
break;
case gpc_a_minus_b:
gpc_polygon_clip(GPC_DIFF,
&m_poly_a,
&m_poly_b,
&m_result);
break;
case gpc_b_minus_a:
gpc_polygon_clip(GPC_DIFF,
&m_poly_b,
&m_poly_a,
&m_result);
break;
}
start_extracting();
}
//------------------------------------------------------------------------
template<class VSA, class VSB>
unsigned conv_gpc<VSA, VSB>::vertex(double* x, double* y)
{
if(m_status == status_move_to)
{
if(next_contour())
{
if(next_vertex(x, y))
{
m_status = status_line_to;
return path_cmd_move_to;
}
m_status = status_stop;
return path_cmd_end_poly | path_flags_close;
}
}
else
{
if(next_vertex(x, y))
{
return path_cmd_line_to;
}
else
{
m_status = status_move_to;
}
return path_cmd_end_poly | path_flags_close;
}
return path_cmd_stop;
}
}
#endif

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xs/src/agg/agg_conv_marker.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// conv_marker
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_MARKER_INCLUDED
#define AGG_CONV_MARKER_INCLUDED
#include "agg_basics.h"
#include "agg_trans_affine.h"
namespace agg
{
//-------------------------------------------------------------conv_marker
template<class MarkerLocator, class MarkerShapes>
class conv_marker
{
public:
conv_marker(MarkerLocator& ml, MarkerShapes& ms);
trans_affine& transform() { return m_transform; }
const trans_affine& transform() const { return m_transform; }
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
conv_marker(const conv_marker<MarkerLocator, MarkerShapes>&);
const conv_marker<MarkerLocator, MarkerShapes>&
operator = (const conv_marker<MarkerLocator, MarkerShapes>&);
enum status_e
{
initial,
markers,
polygon,
stop
};
MarkerLocator* m_marker_locator;
MarkerShapes* m_marker_shapes;
trans_affine m_transform;
trans_affine m_mtx;
status_e m_status;
unsigned m_marker;
unsigned m_num_markers;
};
//------------------------------------------------------------------------
template<class MarkerLocator, class MarkerShapes>
conv_marker<MarkerLocator, MarkerShapes>::conv_marker(MarkerLocator& ml, MarkerShapes& ms) :
m_marker_locator(&ml),
m_marker_shapes(&ms),
m_status(initial),
m_marker(0),
m_num_markers(1)
{
}
//------------------------------------------------------------------------
template<class MarkerLocator, class MarkerShapes>
void conv_marker<MarkerLocator, MarkerShapes>::rewind(unsigned)
{
m_status = initial;
m_marker = 0;
m_num_markers = 1;
}
//------------------------------------------------------------------------
template<class MarkerLocator, class MarkerShapes>
unsigned conv_marker<MarkerLocator, MarkerShapes>::vertex(double* x, double* y)
{
unsigned cmd = path_cmd_move_to;
double x1, y1, x2, y2;
while(!is_stop(cmd))
{
switch(m_status)
{
case initial:
if(m_num_markers == 0)
{
cmd = path_cmd_stop;
break;
}
m_marker_locator->rewind(m_marker);
++m_marker;
m_num_markers = 0;
m_status = markers;
case markers:
if(is_stop(m_marker_locator->vertex(&x1, &y1)))
{
m_status = initial;
break;
}
if(is_stop(m_marker_locator->vertex(&x2, &y2)))
{
m_status = initial;
break;
}
++m_num_markers;
m_mtx = m_transform;
m_mtx *= trans_affine_rotation(atan2(y2 - y1, x2 - x1));
m_mtx *= trans_affine_translation(x1, y1);
m_marker_shapes->rewind(m_marker - 1);
m_status = polygon;
case polygon:
cmd = m_marker_shapes->vertex(x, y);
if(is_stop(cmd))
{
cmd = path_cmd_move_to;
m_status = markers;
break;
}
m_mtx.transform(x, y);
return cmd;
case stop:
cmd = path_cmd_stop;
break;
}
}
return cmd;
}
}
#endif

51
xs/src/agg/agg_conv_marker_adaptor.h
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@ -1,51 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_MARKER_ADAPTOR_INCLUDED
#define AGG_CONV_MARKER_ADAPTOR_INCLUDED
#include "agg_basics.h"
#include "agg_conv_adaptor_vcgen.h"
#include "agg_vcgen_vertex_sequence.h"
namespace agg
{
//=====================================================conv_marker_adaptor
template<class VertexSource, class Markers=null_markers>
struct conv_marker_adaptor :
public conv_adaptor_vcgen<VertexSource, vcgen_vertex_sequence, Markers>
{
typedef Markers marker_type;
typedef conv_adaptor_vcgen<VertexSource, vcgen_vertex_sequence, Markers> base_type;
conv_marker_adaptor(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_vertex_sequence, Markers>(vs)
{
}
void shorten(double s) { base_type::generator().shorten(s); }
double shorten() const { return base_type::generator().shorten(); }
private:
conv_marker_adaptor(const conv_marker_adaptor<VertexSource, Markers>&);
const conv_marker_adaptor<VertexSource, Markers>&
operator = (const conv_marker_adaptor<VertexSource, Markers>&);
};
}
#endif

48
xs/src/agg/agg_conv_segmentator.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_SEGMENTATOR_INCLUDED
#define AGG_CONV_SEGMENTATOR_INCLUDED
#include "agg_basics.h"
#include "agg_conv_adaptor_vpgen.h"
#include "agg_vpgen_segmentator.h"
namespace agg
{
//========================================================conv_segmentator
template<class VertexSource>
struct conv_segmentator : public conv_adaptor_vpgen<VertexSource, vpgen_segmentator>
{
typedef conv_adaptor_vpgen<VertexSource, vpgen_segmentator> base_type;
conv_segmentator(VertexSource& vs) :
conv_adaptor_vpgen<VertexSource, vpgen_segmentator>(vs) {}
void approximation_scale(double s) { base_type::vpgen().approximation_scale(s); }
double approximation_scale() const { return base_type::vpgen().approximation_scale(); }
private:
conv_segmentator(const conv_segmentator<VertexSource>&);
const conv_segmentator<VertexSource>&
operator = (const conv_segmentator<VertexSource>&);
};
}
#endif

50
xs/src/agg/agg_conv_shorten_path.h
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@ -1,50 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_SHORTEN_PATH_INCLUDED
#define AGG_CONV_SHORTEN_PATH_INCLUDED
#include "agg_basics.h"
#include "agg_conv_adaptor_vcgen.h"
#include "agg_vcgen_vertex_sequence.h"
namespace agg
{
//=======================================================conv_shorten_path
template<class VertexSource> class conv_shorten_path :
public conv_adaptor_vcgen<VertexSource, vcgen_vertex_sequence>
{
public:
typedef conv_adaptor_vcgen<VertexSource, vcgen_vertex_sequence> base_type;
conv_shorten_path(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_vertex_sequence>(vs)
{
}
void shorten(double s) { base_type::generator().shorten(s); }
double shorten() const { return base_type::generator().shorten(); }
private:
conv_shorten_path(const conv_shorten_path<VertexSource>&);
const conv_shorten_path<VertexSource>&
operator = (const conv_shorten_path<VertexSource>&);
};
}
#endif

80
xs/src/agg/agg_conv_smooth_poly1.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Smooth polygon generator
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_SMOOTH_POLY1_INCLUDED
#define AGG_CONV_SMOOTH_POLY1_INCLUDED
#include "agg_basics.h"
#include "agg_vcgen_smooth_poly1.h"
#include "agg_conv_adaptor_vcgen.h"
#include "agg_conv_curve.h"
namespace agg
{
//-------------------------------------------------------conv_smooth_poly1
template<class VertexSource>
struct conv_smooth_poly1 :
public conv_adaptor_vcgen<VertexSource, vcgen_smooth_poly1>
{
typedef conv_adaptor_vcgen<VertexSource, vcgen_smooth_poly1> base_type;
conv_smooth_poly1(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_smooth_poly1>(vs)
{
}
void smooth_value(double v) { base_type::generator().smooth_value(v); }
double smooth_value() const { return base_type::generator().smooth_value(); }
private:
conv_smooth_poly1(const conv_smooth_poly1<VertexSource>&);
const conv_smooth_poly1<VertexSource>&
operator = (const conv_smooth_poly1<VertexSource>&);
};
//-------------------------------------------------conv_smooth_poly1_curve
template<class VertexSource>
struct conv_smooth_poly1_curve :
public conv_curve<conv_smooth_poly1<VertexSource> >
{
conv_smooth_poly1_curve(VertexSource& vs) :
conv_curve<conv_smooth_poly1<VertexSource> >(m_smooth),
m_smooth(vs)
{
}
void smooth_value(double v) { m_smooth.generator().smooth_value(v); }
double smooth_value() const { return m_smooth.generator().smooth_value(); }
private:
conv_smooth_poly1_curve(const conv_smooth_poly1_curve<VertexSource>&);
const conv_smooth_poly1_curve<VertexSource>&
operator = (const conv_smooth_poly1_curve<VertexSource>&);
conv_smooth_poly1<VertexSource> m_smooth;
};
}
#endif

73
xs/src/agg/agg_conv_stroke.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// conv_stroke
//
//----------------------------------------------------------------------------
#ifndef AGG_CONV_STROKE_INCLUDED
#define AGG_CONV_STROKE_INCLUDED
#include "agg_basics.h"
#include "agg_vcgen_stroke.h"
#include "agg_conv_adaptor_vcgen.h"
namespace agg
{
//-------------------------------------------------------------conv_stroke
template<class VertexSource, class Markers=null_markers>
struct conv_stroke :
public conv_adaptor_vcgen<VertexSource, vcgen_stroke, Markers>
{
typedef Markers marker_type;
typedef conv_adaptor_vcgen<VertexSource, vcgen_stroke, Markers> base_type;
conv_stroke(VertexSource& vs) :
conv_adaptor_vcgen<VertexSource, vcgen_stroke, Markers>(vs)
{
}
void line_cap(line_cap_e lc) { base_type::generator().line_cap(lc); }
void line_join(line_join_e lj) { base_type::generator().line_join(lj); }
void inner_join(inner_join_e ij) { base_type::generator().inner_join(ij); }
line_cap_e line_cap() const { return base_type::generator().line_cap(); }
line_join_e line_join() const { return base_type::generator().line_join(); }
inner_join_e inner_join() const { return base_type::generator().inner_join(); }
void width(double w) { base_type::generator().width(w); }
void miter_limit(double ml) { base_type::generator().miter_limit(ml); }
void miter_limit_theta(double t) { base_type::generator().miter_limit_theta(t); }
void inner_miter_limit(double ml) { base_type::generator().inner_miter_limit(ml); }
void approximation_scale(double as) { base_type::generator().approximation_scale(as); }
double width() const { return base_type::generator().width(); }
double miter_limit() const { return base_type::generator().miter_limit(); }
double inner_miter_limit() const { return base_type::generator().inner_miter_limit(); }
double approximation_scale() const { return base_type::generator().approximation_scale(); }
void shorten(double s) { base_type::generator().shorten(s); }
double shorten() const { return base_type::generator().shorten(); }
private:
conv_stroke(const conv_stroke<VertexSource, Markers>&);
const conv_stroke<VertexSource, Markers>&
operator = (const conv_stroke<VertexSource, Markers>&);
};
}
#endif

52
xs/src/agg/agg_conv_unclose_polygon.h
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@ -1,52 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CONV_UNCLOSE_POLYGON_INCLUDED
#define AGG_CONV_UNCLOSE_POLYGON_INCLUDED
#include "agg_basics.h"
namespace agg
{
//====================================================conv_unclose_polygon
template<class VertexSource> class conv_unclose_polygon
{
public:
explicit conv_unclose_polygon(VertexSource& vs) : m_source(&vs) {}
void attach(VertexSource& source) { m_source = &source; }
void rewind(unsigned path_id)
{
m_source->rewind(path_id);
}
unsigned vertex(double* x, double* y)
{
unsigned cmd = m_source->vertex(x, y);
if(is_end_poly(cmd)) cmd &= ~path_flags_close;
return cmd;
}
private:
conv_unclose_polygon(const conv_unclose_polygon<VertexSource>&);
const conv_unclose_polygon<VertexSource>&
operator = (const conv_unclose_polygon<VertexSource>&);
VertexSource* m_source;
};
}
#endif

693
xs/src/agg/agg_curves.h
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@ -1,693 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
// Copyright (C) 2005 Tony Juricic (tonygeek@yahoo.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_CURVES_INCLUDED
#define AGG_CURVES_INCLUDED
#include "agg_array.h"
namespace agg
{
// See Implementation agg_curves.cpp
//--------------------------------------------curve_approximation_method_e
enum curve_approximation_method_e
{
curve_inc,
curve_div
};
//--------------------------------------------------------------curve3_inc
class curve3_inc
{
public:
curve3_inc() :
m_num_steps(0), m_step(0), m_scale(1.0) { }
curve3_inc(double x1, double y1,
double x2, double y2,
double x3, double y3) :
m_num_steps(0), m_step(0), m_scale(1.0)
{
init(x1, y1, x2, y2, x3, y3);
}
void reset() { m_num_steps = 0; m_step = -1; }
void init(double x1, double y1,
double x2, double y2,
double x3, double y3);
void approximation_method(curve_approximation_method_e) {}
curve_approximation_method_e approximation_method() const { return curve_inc; }
void approximation_scale(double s);
double approximation_scale() const;
void angle_tolerance(double) {}
double angle_tolerance() const { return 0.0; }
void cusp_limit(double) {}
double cusp_limit() const { return 0.0; }
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
int m_num_steps;
int m_step;
double m_scale;
double m_start_x;
double m_start_y;
double m_end_x;
double m_end_y;
double m_fx;
double m_fy;
double m_dfx;
double m_dfy;
double m_ddfx;
double m_ddfy;
double m_saved_fx;
double m_saved_fy;
double m_saved_dfx;
double m_saved_dfy;
};
//-------------------------------------------------------------curve3_div
class curve3_div
{
public:
curve3_div() :
m_approximation_scale(1.0),
m_angle_tolerance(0.0),
m_count(0)
{}
curve3_div(double x1, double y1,
double x2, double y2,
double x3, double y3) :
m_approximation_scale(1.0),
m_angle_tolerance(0.0),
m_count(0)
{
init(x1, y1, x2, y2, x3, y3);
}
void reset() { m_points.remove_all(); m_count = 0; }
void init(double x1, double y1,
double x2, double y2,
double x3, double y3);
void approximation_method(curve_approximation_method_e) {}
curve_approximation_method_e approximation_method() const { return curve_div; }
void approximation_scale(double s) { m_approximation_scale = s; }
double approximation_scale() const { return m_approximation_scale; }
void angle_tolerance(double a) { m_angle_tolerance = a; }
double angle_tolerance() const { return m_angle_tolerance; }
void cusp_limit(double) {}
double cusp_limit() const { return 0.0; }
void rewind(unsigned)
{
m_count = 0;
}
unsigned vertex(double* x, double* y)
{
if(m_count >= m_points.size()) return path_cmd_stop;
const point_d& p = m_points[m_count++];
*x = p.x;
*y = p.y;
return (m_count == 1) ? path_cmd_move_to : path_cmd_line_to;
}
private:
void bezier(double x1, double y1,
double x2, double y2,
double x3, double y3);
void recursive_bezier(double x1, double y1,
double x2, double y2,
double x3, double y3,
unsigned level);
double m_approximation_scale;
double m_distance_tolerance_square;
double m_angle_tolerance;
unsigned m_count;
pod_bvector<point_d> m_points;
};
//-------------------------------------------------------------curve4_points
struct curve4_points
{
double cp[8];
curve4_points() {}
curve4_points(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4)
{
cp[0] = x1; cp[1] = y1; cp[2] = x2; cp[3] = y2;
cp[4] = x3; cp[5] = y3; cp[6] = x4; cp[7] = y4;
}
void init(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4)
{
cp[0] = x1; cp[1] = y1; cp[2] = x2; cp[3] = y2;
cp[4] = x3; cp[5] = y3; cp[6] = x4; cp[7] = y4;
}
double operator [] (unsigned i) const { return cp[i]; }
double& operator [] (unsigned i) { return cp[i]; }
};
//-------------------------------------------------------------curve4_inc
class curve4_inc
{
public:
curve4_inc() :
m_num_steps(0), m_step(0), m_scale(1.0) { }
curve4_inc(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4) :
m_num_steps(0), m_step(0), m_scale(1.0)
{
init(x1, y1, x2, y2, x3, y3, x4, y4);
}
curve4_inc(const curve4_points& cp) :
m_num_steps(0), m_step(0), m_scale(1.0)
{
init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
}
void reset() { m_num_steps = 0; m_step = -1; }
void init(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4);
void init(const curve4_points& cp)
{
init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
}
void approximation_method(curve_approximation_method_e) {}
curve_approximation_method_e approximation_method() const { return curve_inc; }
void approximation_scale(double s);
double approximation_scale() const;
void angle_tolerance(double) {}
double angle_tolerance() const { return 0.0; }
void cusp_limit(double) {}
double cusp_limit() const { return 0.0; }
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
int m_num_steps;
int m_step;
double m_scale;
double m_start_x;
double m_start_y;
double m_end_x;
double m_end_y;
double m_fx;
double m_fy;
double m_dfx;
double m_dfy;
double m_ddfx;
double m_ddfy;
double m_dddfx;
double m_dddfy;
double m_saved_fx;
double m_saved_fy;
double m_saved_dfx;
double m_saved_dfy;
double m_saved_ddfx;
double m_saved_ddfy;
};
//-------------------------------------------------------catrom_to_bezier
inline curve4_points catrom_to_bezier(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4)
{
// Trans. matrix Catmull-Rom to Bezier
//
// 0 1 0 0
// -1/6 1 1/6 0
// 0 1/6 1 -1/6
// 0 0 1 0
//
return curve4_points(
x2,
y2,
(-x1 + 6*x2 + x3) / 6,
(-y1 + 6*y2 + y3) / 6,
( x2 + 6*x3 - x4) / 6,
( y2 + 6*y3 - y4) / 6,
x3,
y3);
}
//-----------------------------------------------------------------------
inline curve4_points
catrom_to_bezier(const curve4_points& cp)
{
return catrom_to_bezier(cp[0], cp[1], cp[2], cp[3],
cp[4], cp[5], cp[6], cp[7]);
}
//-----------------------------------------------------ubspline_to_bezier
inline curve4_points ubspline_to_bezier(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4)
{
// Trans. matrix Uniform BSpline to Bezier
//
// 1/6 4/6 1/6 0
// 0 4/6 2/6 0
// 0 2/6 4/6 0
// 0 1/6 4/6 1/6
//
return curve4_points(
(x1 + 4*x2 + x3) / 6,
(y1 + 4*y2 + y3) / 6,
(4*x2 + 2*x3) / 6,
(4*y2 + 2*y3) / 6,
(2*x2 + 4*x3) / 6,
(2*y2 + 4*y3) / 6,
(x2 + 4*x3 + x4) / 6,
(y2 + 4*y3 + y4) / 6);
}
//-----------------------------------------------------------------------
inline curve4_points
ubspline_to_bezier(const curve4_points& cp)
{
return ubspline_to_bezier(cp[0], cp[1], cp[2], cp[3],
cp[4], cp[5], cp[6], cp[7]);
}
//------------------------------------------------------hermite_to_bezier
inline curve4_points hermite_to_bezier(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4)
{
// Trans. matrix Hermite to Bezier
//
// 1 0 0 0
// 1 0 1/3 0
// 0 1 0 -1/3
// 0 1 0 0
//
return curve4_points(
x1,
y1,
(3*x1 + x3) / 3,
(3*y1 + y3) / 3,
(3*x2 - x4) / 3,
(3*y2 - y4) / 3,
x2,
y2);
}
//-----------------------------------------------------------------------
inline curve4_points
hermite_to_bezier(const curve4_points& cp)
{
return hermite_to_bezier(cp[0], cp[1], cp[2], cp[3],
cp[4], cp[5], cp[6], cp[7]);
}
//-------------------------------------------------------------curve4_div
class curve4_div
{
public:
curve4_div() :
m_approximation_scale(1.0),
m_angle_tolerance(0.0),
m_cusp_limit(0.0),
m_count(0)
{}
curve4_div(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4) :
m_approximation_scale(1.0),
m_angle_tolerance(0.0),
m_cusp_limit(0.0),
m_count(0)
{
init(x1, y1, x2, y2, x3, y3, x4, y4);
}
curve4_div(const curve4_points& cp) :
m_approximation_scale(1.0),
m_angle_tolerance(0.0),
m_count(0)
{
init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
}
void reset() { m_points.remove_all(); m_count = 0; }
void init(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4);
void init(const curve4_points& cp)
{
init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
}
void approximation_method(curve_approximation_method_e) {}
curve_approximation_method_e approximation_method() const
{
return curve_div;
}
void approximation_scale(double s) { m_approximation_scale = s; }
double approximation_scale() const { return m_approximation_scale; }
void angle_tolerance(double a) { m_angle_tolerance = a; }
double angle_tolerance() const { return m_angle_tolerance; }
void cusp_limit(double v)
{
m_cusp_limit = (v == 0.0) ? 0.0 : pi - v;
}
double cusp_limit() const
{
return (m_cusp_limit == 0.0) ? 0.0 : pi - m_cusp_limit;
}
void rewind(unsigned)
{
m_count = 0;
}
unsigned vertex(double* x, double* y)
{
if(m_count >= m_points.size()) return path_cmd_stop;
const point_d& p = m_points[m_count++];
*x = p.x;
*y = p.y;
return (m_count == 1) ? path_cmd_move_to : path_cmd_line_to;
}
private:
void bezier(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4);
void recursive_bezier(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4,
unsigned level);
double m_approximation_scale;
double m_distance_tolerance_square;
double m_angle_tolerance;
double m_cusp_limit;
unsigned m_count;
pod_bvector<point_d> m_points;
};
//-----------------------------------------------------------------curve3
class curve3
{
public:
curve3() : m_approximation_method(curve_div) {}
curve3(double x1, double y1,
double x2, double y2,
double x3, double y3) :
m_approximation_method(curve_div)
{
init(x1, y1, x2, y2, x3, y3);
}
void reset()
{
m_curve_inc.reset();
m_curve_div.reset();
}
void init(double x1, double y1,
double x2, double y2,
double x3, double y3)
{
if(m_approximation_method == curve_inc)
{
m_curve_inc.init(x1, y1, x2, y2, x3, y3);
}
else
{
m_curve_div.init(x1, y1, x2, y2, x3, y3);
}
}
void approximation_method(curve_approximation_method_e v)
{
m_approximation_method = v;
}
curve_approximation_method_e approximation_method() const
{
return m_approximation_method;
}
void approximation_scale(double s)
{
m_curve_inc.approximation_scale(s);
m_curve_div.approximation_scale(s);
}
double approximation_scale() const
{
return m_curve_inc.approximation_scale();
}
void angle_tolerance(double a)
{
m_curve_div.angle_tolerance(a);
}
double angle_tolerance() const
{
return m_curve_div.angle_tolerance();
}
void cusp_limit(double v)
{
m_curve_div.cusp_limit(v);
}
double cusp_limit() const
{
return m_curve_div.cusp_limit();
}
void rewind(unsigned path_id)
{
if(m_approximation_method == curve_inc)
{
m_curve_inc.rewind(path_id);
}
else
{
m_curve_div.rewind(path_id);
}
}
unsigned vertex(double* x, double* y)
{
if(m_approximation_method == curve_inc)
{
return m_curve_inc.vertex(x, y);
}
return m_curve_div.vertex(x, y);
}
private:
curve3_inc m_curve_inc;
curve3_div m_curve_div;
curve_approximation_method_e m_approximation_method;
};
//-----------------------------------------------------------------curve4
class curve4
{
public:
curve4() : m_approximation_method(curve_div) {}
curve4(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4) :
m_approximation_method(curve_div)
{
init(x1, y1, x2, y2, x3, y3, x4, y4);
}
curve4(const curve4_points& cp) :
m_approximation_method(curve_div)
{
init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
}
void reset()
{
m_curve_inc.reset();
m_curve_div.reset();
}
void init(double x1, double y1,
double x2, double y2,
double x3, double y3,
double x4, double y4)
{
if(m_approximation_method == curve_inc)
{
m_curve_inc.init(x1, y1, x2, y2, x3, y3, x4, y4);
}
else
{
m_curve_div.init(x1, y1, x2, y2, x3, y3, x4, y4);
}
}
void init(const curve4_points& cp)
{
init(cp[0], cp[1], cp[2], cp[3], cp[4], cp[5], cp[6], cp[7]);
}
void approximation_method(curve_approximation_method_e v)
{
m_approximation_method = v;
}
curve_approximation_method_e approximation_method() const
{
return m_approximation_method;
}
void approximation_scale(double s)
{
m_curve_inc.approximation_scale(s);
m_curve_div.approximation_scale(s);
}
double approximation_scale() const { return m_curve_inc.approximation_scale(); }
void angle_tolerance(double v)
{
m_curve_div.angle_tolerance(v);
}
double angle_tolerance() const
{
return m_curve_div.angle_tolerance();
}
void cusp_limit(double v)
{
m_curve_div.cusp_limit(v);
}
double cusp_limit() const
{
return m_curve_div.cusp_limit();
}
void rewind(unsigned path_id)
{
if(m_approximation_method == curve_inc)
{
m_curve_inc.rewind(path_id);
}
else
{
m_curve_div.rewind(path_id);
}
}
unsigned vertex(double* x, double* y)
{
if(m_approximation_method == curve_inc)
{
return m_curve_inc.vertex(x, y);
}
return m_curve_div.vertex(x, y);
}
private:
curve4_inc m_curve_inc;
curve4_div m_curve_div;
curve_approximation_method_e m_approximation_method;
};
}
#endif

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xs/src/agg/agg_dda_line.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// classes dda_line_interpolator, dda2_line_interpolator
//
//----------------------------------------------------------------------------
#ifndef AGG_DDA_LINE_INCLUDED
#define AGG_DDA_LINE_INCLUDED
#include <stdlib.h>
#include "agg_basics.h"
namespace agg
{
//===================================================dda_line_interpolator
template<int FractionShift, int YShift=0> class dda_line_interpolator
{
public:
//--------------------------------------------------------------------
dda_line_interpolator() {}
//--------------------------------------------------------------------
dda_line_interpolator(int y1, int y2, unsigned count) :
m_y(y1),
m_inc(((y2 - y1) << FractionShift) / int(count)),
m_dy(0)
{
}
//--------------------------------------------------------------------
void operator ++ ()
{
m_dy += m_inc;
}
//--------------------------------------------------------------------
void operator -- ()
{
m_dy -= m_inc;
}
//--------------------------------------------------------------------
void operator += (unsigned n)
{
m_dy += m_inc * n;
}
//--------------------------------------------------------------------
void operator -= (unsigned n)
{
m_dy -= m_inc * n;
}
//--------------------------------------------------------------------
int y() const { return m_y + (m_dy >> (FractionShift-YShift)); }
int dy() const { return m_dy; }
private:
int m_y;
int m_inc;
int m_dy;
};
//=================================================dda2_line_interpolator
class dda2_line_interpolator
{
public:
typedef int save_data_type;
enum save_size_e { save_size = 2 };
//--------------------------------------------------------------------
dda2_line_interpolator() {}
//-------------------------------------------- Forward-adjusted line
dda2_line_interpolator(int y1, int y2, int count) :
m_cnt(count <= 0 ? 1 : count),
m_lft((y2 - y1) / m_cnt),
m_rem((y2 - y1) % m_cnt),
m_mod(m_rem),
m_y(y1)
{
if(m_mod <= 0)
{
m_mod += count;
m_rem += count;
m_lft--;
}
m_mod -= count;
}
//-------------------------------------------- Backward-adjusted line
dda2_line_interpolator(int y1, int y2, int count, int) :
m_cnt(count <= 0 ? 1 : count),
m_lft((y2 - y1) / m_cnt),
m_rem((y2 - y1) % m_cnt),
m_mod(m_rem),
m_y(y1)
{
if(m_mod <= 0)
{
m_mod += count;
m_rem += count;
m_lft--;
}
}
//-------------------------------------------- Backward-adjusted line
dda2_line_interpolator(int y, int count) :
m_cnt(count <= 0 ? 1 : count),
m_lft(y / m_cnt),
m_rem(y % m_cnt),
m_mod(m_rem),
m_y(0)
{
if(m_mod <= 0)
{
m_mod += count;
m_rem += count;
m_lft--;
}
}
//--------------------------------------------------------------------
void save(save_data_type* data) const
{
data[0] = m_mod;
data[1] = m_y;
}
//--------------------------------------------------------------------
void load(const save_data_type* data)
{
m_mod = data[0];
m_y = data[1];
}
//--------------------------------------------------------------------
void operator++()
{
m_mod += m_rem;
m_y += m_lft;
if(m_mod > 0)
{
m_mod -= m_cnt;
m_y++;
}
}
//--------------------------------------------------------------------
void operator--()
{
if(m_mod <= m_rem)
{
m_mod += m_cnt;
m_y--;
}
m_mod -= m_rem;
m_y -= m_lft;
}
//--------------------------------------------------------------------
void adjust_forward()
{
m_mod -= m_cnt;
}
//--------------------------------------------------------------------
void adjust_backward()
{
m_mod += m_cnt;
}
//--------------------------------------------------------------------
int mod() const { return m_mod; }
int rem() const { return m_rem; }
int lft() const { return m_lft; }
//--------------------------------------------------------------------
int y() const { return m_y; }
private:
int m_cnt;
int m_lft;
int m_rem;
int m_mod;
int m_y;
};
//---------------------------------------------line_bresenham_interpolator
class line_bresenham_interpolator
{
public:
enum subpixel_scale_e
{
subpixel_shift = 8,
subpixel_scale = 1 << subpixel_shift,
subpixel_mask = subpixel_scale - 1
};
//--------------------------------------------------------------------
static int line_lr(int v) { return v >> subpixel_shift; }
//--------------------------------------------------------------------
line_bresenham_interpolator(int x1, int y1, int x2, int y2) :
m_x1_lr(line_lr(x1)),
m_y1_lr(line_lr(y1)),
m_x2_lr(line_lr(x2)),
m_y2_lr(line_lr(y2)),
m_ver(abs(m_x2_lr - m_x1_lr) < abs(m_y2_lr - m_y1_lr)),
m_len(m_ver ? abs(m_y2_lr - m_y1_lr) :
abs(m_x2_lr - m_x1_lr)),
m_inc(m_ver ? ((y2 > y1) ? 1 : -1) : ((x2 > x1) ? 1 : -1)),
m_interpolator(m_ver ? x1 : y1,
m_ver ? x2 : y2,
m_len)
{
}
//--------------------------------------------------------------------
bool is_ver() const { return m_ver; }
unsigned len() const { return m_len; }
int inc() const { return m_inc; }
//--------------------------------------------------------------------
void hstep()
{
++m_interpolator;
m_x1_lr += m_inc;
}
//--------------------------------------------------------------------
void vstep()
{
++m_interpolator;
m_y1_lr += m_inc;
}
//--------------------------------------------------------------------
int x1() const { return m_x1_lr; }
int y1() const { return m_y1_lr; }
int x2() const { return line_lr(m_interpolator.y()); }
int y2() const { return line_lr(m_interpolator.y()); }
int x2_hr() const { return m_interpolator.y(); }
int y2_hr() const { return m_interpolator.y(); }
private:
int m_x1_lr;
int m_y1_lr;
int m_x2_lr;
int m_y2_lr;
bool m_ver;
unsigned m_len;
int m_inc;
dda2_line_interpolator m_interpolator;
};
}
#endif

123
xs/src/agg/agg_ellipse.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// class ellipse
//
//----------------------------------------------------------------------------
#ifndef AGG_ELLIPSE_INCLUDED
#define AGG_ELLIPSE_INCLUDED
#include "agg_basics.h"
#include <math.h>
namespace agg
{
//----------------------------------------------------------------ellipse
class ellipse
{
public:
ellipse() :
m_x(0.0), m_y(0.0), m_rx(1.0), m_ry(1.0), m_scale(1.0),
m_num(4), m_step(0), m_cw(false) {}
ellipse(double x, double y, double rx, double ry,
unsigned num_steps=0, bool cw=false) :
m_x(x), m_y(y), m_rx(rx), m_ry(ry), m_scale(1.0),
m_num(num_steps), m_step(0), m_cw(cw)
{
if(m_num == 0) calc_num_steps();
}
void init(double x, double y, double rx, double ry,
unsigned num_steps=0, bool cw=false);
void approximation_scale(double scale);
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
void calc_num_steps();
double m_x;
double m_y;
double m_rx;
double m_ry;
double m_scale;
unsigned m_num;
unsigned m_step;
bool m_cw;
};
//------------------------------------------------------------------------
inline void ellipse::init(double x, double y, double rx, double ry,
unsigned num_steps, bool cw)
{
m_x = x;
m_y = y;
m_rx = rx;
m_ry = ry;
m_num = num_steps;
m_step = 0;
m_cw = cw;
if(m_num == 0) calc_num_steps();
}
//------------------------------------------------------------------------
inline void ellipse::approximation_scale(double scale)
{
m_scale = scale;
calc_num_steps();
}
//------------------------------------------------------------------------
inline void ellipse::calc_num_steps()
{
double ra = (fabs(m_rx) + fabs(m_ry)) / 2;
double da = acos(ra / (ra + 0.125 / m_scale)) * 2;
m_num = uround(2*pi / da);
}
//------------------------------------------------------------------------
inline void ellipse::rewind(unsigned)
{
m_step = 0;
}
//------------------------------------------------------------------------
inline unsigned ellipse::vertex(double* x, double* y)
{
if(m_step == m_num)
{
++m_step;
return path_cmd_end_poly | path_flags_close | path_flags_ccw;
}
if(m_step > m_num) return path_cmd_stop;
double angle = double(m_step) / double(m_num) * 2.0 * pi;
if(m_cw) angle = 2.0 * pi - angle;
*x = m_x + cos(angle) * m_rx;
*y = m_y + sin(angle) * m_ry;
m_step++;
return ((m_step == 1) ? path_cmd_move_to : path_cmd_line_to);
}
}
#endif

113
xs/src/agg/agg_ellipse_bresenham.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Simple Bresenham interpolator for ellipsees
//
//----------------------------------------------------------------------------
#ifndef AGG_ELLIPSE_BRESENHAM_INCLUDED
#define AGG_ELLIPSE_BRESENHAM_INCLUDED
#include "agg_basics.h"
namespace agg
{
//------------------------------------------ellipse_bresenham_interpolator
class ellipse_bresenham_interpolator
{
public:
ellipse_bresenham_interpolator(int rx, int ry) :
m_rx2(rx * rx),
m_ry2(ry * ry),
m_two_rx2(m_rx2 << 1),
m_two_ry2(m_ry2 << 1),
m_dx(0),
m_dy(0),
m_inc_x(0),
m_inc_y(-ry * m_two_rx2),
m_cur_f(0)
{}
int dx() const { return m_dx; }
int dy() const { return m_dy; }
void operator++ ()
{
int mx, my, mxy, min_m;
int fx, fy, fxy;
mx = fx = m_cur_f + m_inc_x + m_ry2;
if(mx < 0) mx = -mx;
my = fy = m_cur_f + m_inc_y + m_rx2;
if(my < 0) my = -my;
mxy = fxy = m_cur_f + m_inc_x + m_ry2 + m_inc_y + m_rx2;
if(mxy < 0) mxy = -mxy;
min_m = mx;
bool flag = true;
if(min_m > my)
{
min_m = my;
flag = false;
}
m_dx = m_dy = 0;
if(min_m > mxy)
{
m_inc_x += m_two_ry2;
m_inc_y += m_two_rx2;
m_cur_f = fxy;
m_dx = 1;
m_dy = 1;
return;
}
if(flag)
{
m_inc_x += m_two_ry2;
m_cur_f = fx;
m_dx = 1;
return;
}
m_inc_y += m_two_rx2;
m_cur_f = fy;
m_dy = 1;
}
private:
int m_rx2;
int m_ry2;
int m_two_rx2;
int m_two_ry2;
int m_dx;
int m_dy;
int m_inc_x;
int m_inc_y;
int m_cur_f;
};
}
#endif

59
xs/src/agg/agg_embedded_raster_fonts.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_EMBEDDED_RASTER_FONTS_INCLUDED
#define AGG_EMBEDDED_RASTER_FONTS_INCLUDED
#include "agg_basics.h"
namespace agg
{
extern const int8u gse4x6[];
extern const int8u gse4x8[];
extern const int8u gse5x7[];
extern const int8u gse5x9[];
extern const int8u gse6x12[];
extern const int8u gse6x9[];
extern const int8u gse7x11[];
extern const int8u gse7x11_bold[];
extern const int8u gse7x15[];
extern const int8u gse7x15_bold[];
extern const int8u gse8x16[];
extern const int8u gse8x16_bold[];
extern const int8u mcs11_prop[];
extern const int8u mcs11_prop_condensed[];
extern const int8u mcs12_prop[];
extern const int8u mcs13_prop[];
extern const int8u mcs5x10_mono[];
extern const int8u mcs5x11_mono[];
extern const int8u mcs6x10_mono[];
extern const int8u mcs6x11_mono[];
extern const int8u mcs7x12_mono_high[];
extern const int8u mcs7x12_mono_low[];
extern const int8u verdana12[];
extern const int8u verdana12_bold[];
extern const int8u verdana13[];
extern const int8u verdana13_bold[];
extern const int8u verdana14[];
extern const int8u verdana14_bold[];
extern const int8u verdana16[];
extern const int8u verdana16_bold[];
extern const int8u verdana17[];
extern const int8u verdana17_bold[];
extern const int8u verdana18[];
extern const int8u verdana18_bold[];
}
#endif

409
xs/src/agg/agg_font_cache_manager.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_FONT_CACHE_MANAGER_INCLUDED
#define AGG_FONT_CACHE_MANAGER_INCLUDED
#include <string.h>
#include "agg_array.h"
namespace agg
{
//---------------------------------------------------------glyph_data_type
enum glyph_data_type
{
glyph_data_invalid = 0,
glyph_data_mono = 1,
glyph_data_gray8 = 2,
glyph_data_outline = 3
};
//-------------------------------------------------------------glyph_cache
struct glyph_cache
{
unsigned glyph_index;
int8u* data;
unsigned data_size;
glyph_data_type data_type;
rect_i bounds;
double advance_x;
double advance_y;
};
//--------------------------------------------------------------font_cache
class font_cache
{
public:
enum block_size_e { block_size = 16384-16 };
//--------------------------------------------------------------------
font_cache() :
m_allocator(block_size),
m_font_signature(0)
{}
//--------------------------------------------------------------------
void signature(const char* font_signature)
{
m_font_signature = (char*)m_allocator.allocate(strlen(font_signature) + 1);
strcpy(m_font_signature, font_signature);
memset(m_glyphs, 0, sizeof(m_glyphs));
}
//--------------------------------------------------------------------
bool font_is(const char* font_signature) const
{
return strcmp(font_signature, m_font_signature) == 0;
}
//--------------------------------------------------------------------
const glyph_cache* find_glyph(unsigned glyph_code) const
{
unsigned msb = (glyph_code >> 8) & 0xFF;
if(m_glyphs[msb])
{
return m_glyphs[msb][glyph_code & 0xFF];
}
return 0;
}
//--------------------------------------------------------------------
glyph_cache* cache_glyph(unsigned glyph_code,
unsigned glyph_index,
unsigned data_size,
glyph_data_type data_type,
const rect_i& bounds,
double advance_x,
double advance_y)
{
unsigned msb = (glyph_code >> 8) & 0xFF;
if(m_glyphs[msb] == 0)
{
m_glyphs[msb] =
(glyph_cache**)m_allocator.allocate(sizeof(glyph_cache*) * 256,
sizeof(glyph_cache*));
memset(m_glyphs[msb], 0, sizeof(glyph_cache*) * 256);
}
unsigned lsb = glyph_code & 0xFF;
if(m_glyphs[msb][lsb]) return 0; // Already exists, do not overwrite
glyph_cache* glyph =
(glyph_cache*)m_allocator.allocate(sizeof(glyph_cache),
sizeof(double));
glyph->glyph_index = glyph_index;
glyph->data = m_allocator.allocate(data_size);
glyph->data_size = data_size;
glyph->data_type = data_type;
glyph->bounds = bounds;
glyph->advance_x = advance_x;
glyph->advance_y = advance_y;
return m_glyphs[msb][lsb] = glyph;
}
private:
block_allocator m_allocator;
glyph_cache** m_glyphs[256];
char* m_font_signature;
};
//---------------------------------------------------------font_cache_pool
class font_cache_pool
{
public:
//--------------------------------------------------------------------
~font_cache_pool()
{
unsigned i;
for(i = 0; i < m_num_fonts; ++i)
{
obj_allocator<font_cache>::deallocate(m_fonts[i]);
}
pod_allocator<font_cache*>::deallocate(m_fonts, m_max_fonts);
}
//--------------------------------------------------------------------
font_cache_pool(unsigned max_fonts=32) :
m_fonts(pod_allocator<font_cache*>::allocate(max_fonts)),
m_max_fonts(max_fonts),
m_num_fonts(0),
m_cur_font(0)
{}
//--------------------------------------------------------------------
void font(const char* font_signature, bool reset_cache = false)
{
int idx = find_font(font_signature);
if(idx >= 0)
{
if(reset_cache)
{
obj_allocator<font_cache>::deallocate(m_fonts[idx]);
m_fonts[idx] = obj_allocator<font_cache>::allocate();
m_fonts[idx]->signature(font_signature);
}
m_cur_font = m_fonts[idx];
}
else
{
if(m_num_fonts >= m_max_fonts)
{
obj_allocator<font_cache>::deallocate(m_fonts[0]);
memcpy(m_fonts,
m_fonts + 1,
(m_max_fonts - 1) * sizeof(font_cache*));
m_num_fonts = m_max_fonts - 1;
}
m_fonts[m_num_fonts] = obj_allocator<font_cache>::allocate();
m_fonts[m_num_fonts]->signature(font_signature);
m_cur_font = m_fonts[m_num_fonts];
++m_num_fonts;
}
}
//--------------------------------------------------------------------
const font_cache* font() const
{
return m_cur_font;
}
//--------------------------------------------------------------------
const glyph_cache* find_glyph(unsigned glyph_code) const
{
if(m_cur_font) return m_cur_font->find_glyph(glyph_code);
return 0;
}
//--------------------------------------------------------------------
glyph_cache* cache_glyph(unsigned glyph_code,
unsigned glyph_index,
unsigned data_size,
glyph_data_type data_type,
const rect_i& bounds,
double advance_x,
double advance_y)
{
if(m_cur_font)
{
return m_cur_font->cache_glyph(glyph_code,
glyph_index,
data_size,
data_type,
bounds,
advance_x,
advance_y);
}
return 0;
}
//--------------------------------------------------------------------
int find_font(const char* font_signature)
{
unsigned i;
for(i = 0; i < m_num_fonts; i++)
{
if(m_fonts[i]->font_is(font_signature)) return int(i);
}
return -1;
}
private:
font_cache** m_fonts;
unsigned m_max_fonts;
unsigned m_num_fonts;
font_cache* m_cur_font;
};
//------------------------------------------------------------------------
enum glyph_rendering
{
glyph_ren_native_mono,
glyph_ren_native_gray8,
glyph_ren_outline,
glyph_ren_agg_mono,
glyph_ren_agg_gray8
};
//------------------------------------------------------font_cache_manager
template<class FontEngine> class font_cache_manager
{
public:
typedef FontEngine font_engine_type;
typedef font_cache_manager<FontEngine> self_type;
typedef typename font_engine_type::path_adaptor_type path_adaptor_type;
typedef typename font_engine_type::gray8_adaptor_type gray8_adaptor_type;
typedef typename gray8_adaptor_type::embedded_scanline gray8_scanline_type;
typedef typename font_engine_type::mono_adaptor_type mono_adaptor_type;
typedef typename mono_adaptor_type::embedded_scanline mono_scanline_type;
//--------------------------------------------------------------------
font_cache_manager(font_engine_type& engine, unsigned max_fonts=32) :
m_fonts(max_fonts),
m_engine(engine),
m_change_stamp(-1),
m_prev_glyph(0),
m_last_glyph(0)
{}
//--------------------------------------------------------------------
void reset_last_glyph()
{
m_prev_glyph = m_last_glyph = 0;
}
//--------------------------------------------------------------------
const glyph_cache* glyph(unsigned glyph_code)
{
synchronize();
const glyph_cache* gl = m_fonts.find_glyph(glyph_code);
if(gl)
{
m_prev_glyph = m_last_glyph;
return m_last_glyph = gl;
}
else
{
if(m_engine.prepare_glyph(glyph_code))
{
m_prev_glyph = m_last_glyph;
m_last_glyph = m_fonts.cache_glyph(glyph_code,
m_engine.glyph_index(),
m_engine.data_size(),
m_engine.data_type(),
m_engine.bounds(),
m_engine.advance_x(),
m_engine.advance_y());
m_engine.write_glyph_to(m_last_glyph->data);
return m_last_glyph;
}
}
return 0;
}
//--------------------------------------------------------------------
void init_embedded_adaptors(const glyph_cache* gl,
double x, double y,
double scale=1.0)
{
if(gl)
{
switch(gl->data_type)
{
default: return;
case glyph_data_mono:
m_mono_adaptor.init(gl->data, gl->data_size, x, y);
break;
case glyph_data_gray8:
m_gray8_adaptor.init(gl->data, gl->data_size, x, y);
break;
case glyph_data_outline:
m_path_adaptor.init(gl->data, gl->data_size, x, y, scale);
break;
}
}
}
//--------------------------------------------------------------------
path_adaptor_type& path_adaptor() { return m_path_adaptor; }
gray8_adaptor_type& gray8_adaptor() { return m_gray8_adaptor; }
gray8_scanline_type& gray8_scanline() { return m_gray8_scanline; }
mono_adaptor_type& mono_adaptor() { return m_mono_adaptor; }
mono_scanline_type& mono_scanline() { return m_mono_scanline; }
//--------------------------------------------------------------------
const glyph_cache* perv_glyph() const { return m_prev_glyph; }
const glyph_cache* last_glyph() const { return m_last_glyph; }
//--------------------------------------------------------------------
bool add_kerning(double* x, double* y)
{
if(m_prev_glyph && m_last_glyph)
{
return m_engine.add_kerning(m_prev_glyph->glyph_index,
m_last_glyph->glyph_index,
x, y);
}
return false;
}
//--------------------------------------------------------------------
void precache(unsigned from, unsigned to)
{
for(; from <= to; ++from) glyph(from);
}
//--------------------------------------------------------------------
void reset_cache()
{
m_fonts.font(m_engine.font_signature(), true);
m_change_stamp = m_engine.change_stamp();
m_prev_glyph = m_last_glyph = 0;
}
private:
//--------------------------------------------------------------------
font_cache_manager(const self_type&);
const self_type& operator = (const self_type&);
//--------------------------------------------------------------------
void synchronize()
{
if(m_change_stamp != m_engine.change_stamp())
{
m_fonts.font(m_engine.font_signature());
m_change_stamp = m_engine.change_stamp();
m_prev_glyph = m_last_glyph = 0;
}
}
font_cache_pool m_fonts;
font_engine_type& m_engine;
int m_change_stamp;
double m_dx;
double m_dy;
const glyph_cache* m_prev_glyph;
const glyph_cache* m_last_glyph;
path_adaptor_type m_path_adaptor;
gray8_adaptor_type m_gray8_adaptor;
gray8_scanline_type m_gray8_scanline;
mono_adaptor_type m_mono_adaptor;
mono_scanline_type m_mono_scanline;
};
}
#endif

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xs/src/agg/agg_font_cache_manager2.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_FONT_CACHE_MANAGER2_INCLUDED
#define AGG_FONT_CACHE_MANAGER2_INCLUDED
#include <cassert>
#include <exception>
#include <string.h>
#include "agg_array.h"
namespace agg {
namespace fman {
//---------------------------------------------------------glyph_data_type
enum glyph_data_type
{
glyph_data_invalid = 0,
glyph_data_mono = 1,
glyph_data_gray8 = 2,
glyph_data_outline = 3
};
//-------------------------------------------------------------cached_glyph
struct cached_glyph
{
void * cached_font;
unsigned glyph_code;
unsigned glyph_index;
int8u* data;
unsigned data_size;
glyph_data_type data_type;
rect_i bounds;
double advance_x;
double advance_y;
};
//--------------------------------------------------------------cached_glyphs
class cached_glyphs
{
public:
enum block_size_e { block_size = 16384-16 };
//--------------------------------------------------------------------
cached_glyphs()
: m_allocator(block_size)
{ memset(m_glyphs, 0, sizeof(m_glyphs)); }
//--------------------------------------------------------------------
const cached_glyph* find_glyph(unsigned glyph_code) const
{
unsigned msb = (glyph_code >> 8) & 0xFF;
if(m_glyphs[msb])
{
return m_glyphs[msb][glyph_code & 0xFF];
}
return 0;
}
//--------------------------------------------------------------------
cached_glyph* cache_glyph(
void * cached_font,
unsigned glyph_code,
unsigned glyph_index,
unsigned data_size,
glyph_data_type data_type,
const rect_i& bounds,
double advance_x,
double advance_y)
{
unsigned msb = (glyph_code >> 8) & 0xFF;
if(m_glyphs[msb] == 0)
{
m_glyphs[msb] =
(cached_glyph**)m_allocator.allocate(sizeof(cached_glyph*) * 256,
sizeof(cached_glyph*));
memset(m_glyphs[msb], 0, sizeof(cached_glyph*) * 256);
}
unsigned lsb = glyph_code & 0xFF;
if(m_glyphs[msb][lsb]) return 0; // Already exists, do not overwrite
cached_glyph* glyph =
(cached_glyph*)m_allocator.allocate(sizeof(cached_glyph),
sizeof(double));
glyph->cached_font = cached_font;
glyph->glyph_code = glyph_code;
glyph->glyph_index = glyph_index;
glyph->data = m_allocator.allocate(data_size);
glyph->data_size = data_size;
glyph->data_type = data_type;
glyph->bounds = bounds;
glyph->advance_x = advance_x;
glyph->advance_y = advance_y;
return m_glyphs[msb][lsb] = glyph;
}
private:
block_allocator m_allocator;
cached_glyph** m_glyphs[256];
};
//------------------------------------------------------------------------
enum glyph_rendering
{
glyph_ren_native_mono,
glyph_ren_native_gray8,
glyph_ren_outline,
glyph_ren_agg_mono,
glyph_ren_agg_gray8
};
//------------------------------------------------------font_cache_manager
template<class FontEngine> class font_cache_manager
{
public:
typedef FontEngine font_engine_type;
typedef font_cache_manager<FontEngine> self_type;
typedef typename font_engine_type::path_adaptor_type path_adaptor_type;
typedef typename font_engine_type::gray8_adaptor_type gray8_adaptor_type;
typedef typename gray8_adaptor_type::embedded_scanline gray8_scanline_type;
typedef typename font_engine_type::mono_adaptor_type mono_adaptor_type;
typedef typename mono_adaptor_type::embedded_scanline mono_scanline_type;
struct cached_font
{
cached_font(
font_engine_type& engine,
typename FontEngine::loaded_face *face,
double height,
double width,
bool hinting,
glyph_rendering rendering )
: m_engine( engine )
, m_face( face )
, m_height( height )
, m_width( width )
, m_hinting( hinting )
, m_rendering( rendering )
{
select_face();
m_face_height=m_face->height();
m_face_width=m_face->width();
m_face_ascent=m_face->ascent();
m_face_descent=m_face->descent();
m_face_ascent_b=m_face->ascent_b();
m_face_descent_b=m_face->descent_b();
}
double height() const
{
return m_face_height;
}
double width() const
{
return m_face_width;
}
double ascent() const
{
return m_face_ascent;
}
double descent() const
{
return m_face_descent;
}
double ascent_b() const
{
return m_face_ascent_b;
}
double descent_b() const
{
return m_face_descent_b;
}
bool add_kerning( const cached_glyph *first, const cached_glyph *second, double* x, double* y)
{
if( !first || !second )
return false;
select_face();
return m_face->add_kerning(
first->glyph_index, second->glyph_index, x, y );
}
void select_face()
{
m_face->select_instance( m_height, m_width, m_hinting, m_rendering );
}
const cached_glyph *get_glyph(unsigned cp)
{
const cached_glyph *glyph=m_glyphs.find_glyph(cp);
if( glyph==0 )
{
typename FontEngine::prepared_glyph prepared;
select_face();
bool success=m_face->prepare_glyph(cp, &prepared);
if( success )
{
glyph=m_glyphs.cache_glyph(
this,
prepared.glyph_code,
prepared.glyph_index,
prepared.data_size,
prepared.data_type,
prepared.bounds,
prepared.advance_x,
prepared.advance_y );
assert( glyph!=0 );
m_face->write_glyph_to(&prepared,glyph->data);
}
}
return glyph;
}
font_engine_type& m_engine;
typename FontEngine::loaded_face *m_face;
double m_height;
double m_width;
bool m_hinting;
glyph_rendering m_rendering;
double m_face_height;
double m_face_width;
double m_face_ascent;
double m_face_descent;
double m_face_ascent_b;
double m_face_descent_b;
cached_glyphs m_glyphs;
};
//--------------------------------------------------------------------
font_cache_manager(font_engine_type& engine, unsigned max_fonts=32)
:m_engine(engine)
{ }
//--------------------------------------------------------------------
void init_embedded_adaptors(const cached_glyph* gl,
double x, double y,
double scale=1.0)
{
if(gl)
{
switch(gl->data_type)
{
default: return;
case glyph_data_mono:
m_mono_adaptor.init(gl->data, gl->data_size, x, y);
break;
case glyph_data_gray8:
m_gray8_adaptor.init(gl->data, gl->data_size, x, y);
break;
case glyph_data_outline:
m_path_adaptor.init(gl->data, gl->data_size, x, y, scale);
break;
}
}
}
//--------------------------------------------------------------------
path_adaptor_type& path_adaptor() { return m_path_adaptor; }
gray8_adaptor_type& gray8_adaptor() { return m_gray8_adaptor; }
gray8_scanline_type& gray8_scanline() { return m_gray8_scanline; }
mono_adaptor_type& mono_adaptor() { return m_mono_adaptor; }
mono_scanline_type& mono_scanline() { return m_mono_scanline; }
private:
//--------------------------------------------------------------------
font_cache_manager(const self_type&);
const self_type& operator = (const self_type&);
font_engine_type& m_engine;
path_adaptor_type m_path_adaptor;
gray8_adaptor_type m_gray8_adaptor;
gray8_scanline_type m_gray8_scanline;
mono_adaptor_type m_mono_adaptor;
mono_scanline_type m_mono_scanline;
};
}
}
#endif

155
xs/src/agg/agg_glyph_raster_bin.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_GLYPH_RASTER_BIN_INCLUDED
#define AGG_GLYPH_RASTER_BIN_INCLUDED
#include <string.h>
#include "agg_basics.h"
namespace agg
{
//========================================================glyph_raster_bin
template<class ColorT> class glyph_raster_bin
{
public:
typedef ColorT color_type;
//--------------------------------------------------------------------
struct glyph_rect
{
int x1,y1,x2,y2;
double dx, dy;
};
//--------------------------------------------------------------------
glyph_raster_bin(const int8u* font) :
m_font(font),
m_big_endian(false)
{
int t = 1;
if(*(char*)&t == 0) m_big_endian = true;
memset(m_span, 0, sizeof(m_span));
}
//--------------------------------------------------------------------
const int8u* font() const { return m_font; }
void font(const int8u* f) { m_font = f; }
//--------------------------------------------------------------------
double height() const { return m_font[0]; }
double base_line() const { return m_font[1]; }
//--------------------------------------------------------------------
template<class CharT>
double width(const CharT* str) const
{
unsigned start_char = m_font[2];
unsigned num_chars = m_font[3];
unsigned w = 0;
while(*str)
{
unsigned glyph = *str;
const int8u* bits = m_font + 4 + num_chars * 2 +
value(m_font + 4 + (glyph - start_char) * 2);
w += *bits;
++str;
}
return w;
}
//--------------------------------------------------------------------
void prepare(glyph_rect* r, double x, double y, unsigned glyph, bool flip)
{
unsigned start_char = m_font[2];
unsigned num_chars = m_font[3];
m_bits = m_font + 4 + num_chars * 2 +
value(m_font + 4 + (glyph - start_char) * 2);
m_glyph_width = *m_bits++;
m_glyph_byte_width = (m_glyph_width + 7) >> 3;
r->x1 = int(x);
r->x2 = r->x1 + m_glyph_width - 1;
if(flip)
{
r->y1 = int(y) - m_font[0] + m_font[1];
r->y2 = r->y1 + m_font[0] - 1;
}
else
{
r->y1 = int(y) - m_font[1] + 1;
r->y2 = r->y1 + m_font[0] - 1;
}
r->dx = m_glyph_width;
r->dy = 0;
}
//--------------------------------------------------------------------
const cover_type* span(unsigned i)
{
i = m_font[0] - i - 1;
const int8u* bits = m_bits + i * m_glyph_byte_width;
unsigned j;
unsigned val = *bits;
unsigned nb = 0;
for(j = 0; j < m_glyph_width; ++j)
{
m_span[j] = (cover_type)((val & 0x80) ? cover_full : cover_none);
val <<= 1;
if(++nb >= 8)
{
val = *++bits;
nb = 0;
}
}
return m_span;
}
private:
//--------------------------------------------------------------------
int16u value(const int8u* p) const
{
int16u v;
if(m_big_endian)
{
*(int8u*)&v = p[1];
*((int8u*)&v + 1) = p[0];
}
else
{
*(int8u*)&v = p[0];
*((int8u*)&v + 1) = p[1];
}
return v;
}
//--------------------------------------------------------------------
const int8u* m_font;
bool m_big_endian;
cover_type m_span[32];
const int8u* m_bits;
unsigned m_glyph_width;
unsigned m_glyph_byte_width;
};
}
#endif

244
xs/src/agg/agg_gradient_lut.h
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@ -1,244 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_GRADIENT_LUT_INCLUDED
#define AGG_GRADIENT_LUT_INCLUDED
#include "agg_array.h"
#include "agg_dda_line.h"
#include "agg_color_rgba.h"
#include "agg_color_gray.h"
namespace agg
{
//======================================================color_interpolator
template<class ColorT> struct color_interpolator
{
public:
typedef ColorT color_type;
color_interpolator(const color_type& c1,
const color_type& c2,
unsigned len) :
m_c1(c1),
m_c2(c2),
m_len(len),
m_count(0)
{}
void operator ++ ()
{
++m_count;
}
color_type color() const
{
return m_c1.gradient(m_c2, double(m_count) / m_len);
}
private:
color_type m_c1;
color_type m_c2;
unsigned m_len;
unsigned m_count;
};
//========================================================================
// Fast specialization for rgba8
template<> struct color_interpolator<rgba8>
{
public:
typedef rgba8 color_type;
color_interpolator(const color_type& c1,
const color_type& c2,
unsigned len) :
r(c1.r, c2.r, len),
g(c1.g, c2.g, len),
b(c1.b, c2.b, len),
a(c1.a, c2.a, len)
{}
void operator ++ ()
{
++r; ++g; ++b; ++a;
}
color_type color() const
{
return color_type(r.y(), g.y(), b.y(), a.y());
}
private:
agg::dda_line_interpolator<14> r, g, b, a;
};
//========================================================================
// Fast specialization for gray8
template<> struct color_interpolator<gray8>
{
public:
typedef gray8 color_type;
color_interpolator(const color_type& c1,
const color_type& c2,
unsigned len) :
v(c1.v, c2.v, len),
a(c1.a, c2.a, len)
{}
void operator ++ ()
{
++v; ++a;
}
color_type color() const
{
return color_type(v.y(), a.y());
}
private:
agg::dda_line_interpolator<14> v,a;
};
//============================================================gradient_lut
template<class ColorInterpolator,
unsigned ColorLutSize=256> class gradient_lut
{
public:
typedef ColorInterpolator interpolator_type;
typedef typename interpolator_type::color_type color_type;
enum { color_lut_size = ColorLutSize };
//--------------------------------------------------------------------
gradient_lut() : m_color_lut(color_lut_size) {}
// Build Gradient Lut
// First, call remove_all(), then add_color() at least twice,
// then build_lut(). Argument "offset" in add_color must be
// in range [0...1] and defines a color stop as it is described
// in SVG specification, section Gradients and Patterns.
// The simplest linear gradient is:
// gradient_lut.add_color(0.0, start_color);
// gradient_lut.add_color(1.0, end_color);
//--------------------------------------------------------------------
void remove_all();
void add_color(double offset, const color_type& color);
void build_lut();
// Size-index Interface. This class can be used directly as the
// ColorF in span_gradient. All it needs is two access methods
// size() and operator [].
//--------------------------------------------------------------------
static unsigned size()
{
return color_lut_size;
}
const color_type& operator [] (unsigned i) const
{
return m_color_lut[i];
}
private:
//--------------------------------------------------------------------
struct color_point
{
double offset;
color_type color;
color_point() {}
color_point(double off, const color_type& c) :
offset(off), color(c)
{
if(offset < 0.0) offset = 0.0;
if(offset > 1.0) offset = 1.0;
}
};
typedef agg::pod_bvector<color_point, 4> color_profile_type;
typedef agg::pod_array<color_type> color_lut_type;
static bool offset_less(const color_point& a, const color_point& b)
{
return a.offset < b.offset;
}
static bool offset_equal(const color_point& a, const color_point& b)
{
return a.offset == b.offset;
}
//--------------------------------------------------------------------
color_profile_type m_color_profile;
color_lut_type m_color_lut;
};
//------------------------------------------------------------------------
template<class T, unsigned S>
void gradient_lut<T,S>::remove_all()
{
m_color_profile.remove_all();
}
//------------------------------------------------------------------------
template<class T, unsigned S>
void gradient_lut<T,S>::add_color(double offset, const color_type& color)
{
m_color_profile.add(color_point(offset, color));
}
//------------------------------------------------------------------------
template<class T, unsigned S>
void gradient_lut<T,S>::build_lut()
{
quick_sort(m_color_profile, offset_less);
m_color_profile.cut_at(remove_duplicates(m_color_profile, offset_equal));
if(m_color_profile.size() >= 2)
{
unsigned i;
unsigned start = uround(m_color_profile[0].offset * color_lut_size);
unsigned end;
color_type c = m_color_profile[0].color;
for(i = 0; i < start; i++)
{
m_color_lut[i] = c;
}
for(i = 1; i < m_color_profile.size(); i++)
{
end = uround(m_color_profile[i].offset * color_lut_size);
interpolator_type ci(m_color_profile[i-1].color,
m_color_profile[i ].color,
end - start + 1);
while(start < end)
{
m_color_lut[start] = ci.color();
++ci;
++start;
}
}
c = m_color_profile.last().color;
for(; end < m_color_lut.size(); end++)
{
m_color_lut[end] = c;
}
}
}
}
#endif

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xs/src/agg/agg_gsv_text.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Class gsv_text
//
//----------------------------------------------------------------------------
#ifndef AGG_GSV_TEXT_INCLUDED
#define AGG_GSV_TEXT_INCLUDED
#include "agg_array.h"
#include "agg_conv_stroke.h"
#include "agg_conv_transform.h"
namespace agg
{
//---------------------------------------------------------------gsv_text
//
// See Implementation agg_gsv_text.cpp
//
class gsv_text
{
enum status
{
initial,
next_char,
start_glyph,
glyph
};
public:
gsv_text();
void font(const void* font);
void flip(bool flip_y) { m_flip = flip_y; }
void load_font(const char* file);
void size(double height, double width=0.0);
void space(double space);
void line_space(double line_space);
void start_point(double x, double y);
void text(const char* text);
double text_width();
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
// not supposed to be copied
gsv_text(const gsv_text&);
const gsv_text& operator = (const gsv_text&);
int16u value(const int8u* p) const
{
int16u v;
if(m_big_endian)
{
*(int8u*)&v = p[1];
*((int8u*)&v + 1) = p[0];
}
else
{
*(int8u*)&v = p[0];
*((int8u*)&v + 1) = p[1];
}
return v;
}
private:
double m_x;
double m_y;
double m_start_x;
double m_width;
double m_height;
double m_space;
double m_line_space;
char m_chr[2];
char* m_text;
pod_array<char> m_text_buf;
char* m_cur_chr;
const void* m_font;
pod_array<char> m_loaded_font;
status m_status;
bool m_big_endian;
bool m_flip;
int8u* m_indices;
int8* m_glyphs;
int8* m_bglyph;
int8* m_eglyph;
double m_w;
double m_h;
};
//--------------------------------------------------------gsv_text_outline
template<class Transformer = trans_affine> class gsv_text_outline
{
public:
gsv_text_outline(gsv_text& text, Transformer& trans) :
m_polyline(text),
m_trans(m_polyline, trans)
{
}
void width(double w)
{
m_polyline.width(w);
}
void transformer(const Transformer* trans)
{
m_trans->transformer(trans);
}
void rewind(unsigned path_id)
{
m_trans.rewind(path_id);
m_polyline.line_join(round_join);
m_polyline.line_cap(round_cap);
}
unsigned vertex(double* x, double* y)
{
return m_trans.vertex(x, y);
}
private:
conv_stroke<gsv_text> m_polyline;
conv_transform<conv_stroke<gsv_text>, Transformer> m_trans;
};
}
#endif

481
xs/src/agg/agg_image_accessors.h
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@ -1,481 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_IMAGE_ACCESSORS_INCLUDED
#define AGG_IMAGE_ACCESSORS_INCLUDED
#include "agg_basics.h"
namespace agg
{
//-----------------------------------------------------image_accessor_clip
template<class PixFmt> class image_accessor_clip
{
public:
typedef PixFmt pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::order_type order_type;
typedef typename pixfmt_type::value_type value_type;
enum pix_width_e { pix_width = pixfmt_type::pix_width };
image_accessor_clip() {}
explicit image_accessor_clip(pixfmt_type& pixf,
const color_type& bk) :
m_pixf(&pixf)
{
pixfmt_type::make_pix(m_bk_buf, bk);
}
void attach(pixfmt_type& pixf)
{
m_pixf = &pixf;
}
void background_color(const color_type& bk)
{
pixfmt_type::make_pix(m_bk_buf, bk);
}
private:
AGG_INLINE const int8u* pixel() const
{
if(m_y >= 0 && m_y < (int)m_pixf->height() &&
m_x >= 0 && m_x < (int)m_pixf->width())
{
return m_pixf->pix_ptr(m_x, m_y);
}
return m_bk_buf;
}
public:
AGG_INLINE const int8u* span(int x, int y, unsigned len)
{
m_x = m_x0 = x;
m_y = y;
if(y >= 0 && y < (int)m_pixf->height() &&
x >= 0 && x+(int)len <= (int)m_pixf->width())
{
return m_pix_ptr = m_pixf->pix_ptr(x, y);
}
m_pix_ptr = 0;
return pixel();
}
AGG_INLINE const int8u* next_x()
{
if(m_pix_ptr) return m_pix_ptr += pix_width;
++m_x;
return pixel();
}
AGG_INLINE const int8u* next_y()
{
++m_y;
m_x = m_x0;
if(m_pix_ptr &&
m_y >= 0 && m_y < (int)m_pixf->height())
{
return m_pix_ptr = m_pixf->pix_ptr(m_x, m_y);
}
m_pix_ptr = 0;
return pixel();
}
private:
const pixfmt_type* m_pixf;
int8u m_bk_buf[pix_width];
int m_x, m_x0, m_y;
const int8u* m_pix_ptr;
};
//--------------------------------------------------image_accessor_no_clip
template<class PixFmt> class image_accessor_no_clip
{
public:
typedef PixFmt pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::order_type order_type;
typedef typename pixfmt_type::value_type value_type;
enum pix_width_e { pix_width = pixfmt_type::pix_width };
image_accessor_no_clip() {}
explicit image_accessor_no_clip(pixfmt_type& pixf) :
m_pixf(&pixf)
{}
void attach(pixfmt_type& pixf)
{
m_pixf = &pixf;
}
AGG_INLINE const int8u* span(int x, int y, unsigned)
{
m_x = x;
m_y = y;
return m_pix_ptr = m_pixf->pix_ptr(x, y);
}
AGG_INLINE const int8u* next_x()
{
return m_pix_ptr += pix_width;
}
AGG_INLINE const int8u* next_y()
{
++m_y;
return m_pix_ptr = m_pixf->pix_ptr(m_x, m_y);
}
private:
const pixfmt_type* m_pixf;
int m_x, m_y;
const int8u* m_pix_ptr;
};
//----------------------------------------------------image_accessor_clone
template<class PixFmt> class image_accessor_clone
{
public:
typedef PixFmt pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::order_type order_type;
typedef typename pixfmt_type::value_type value_type;
enum pix_width_e { pix_width = pixfmt_type::pix_width };
image_accessor_clone() {}
explicit image_accessor_clone(pixfmt_type& pixf) :
m_pixf(&pixf)
{}
void attach(pixfmt_type& pixf)
{
m_pixf = &pixf;
}
private:
AGG_INLINE const int8u* pixel() const
{
int x = m_x;
int y = m_y;
if(x < 0) x = 0;
if(y < 0) y = 0;
if(x >= (int)m_pixf->width()) x = m_pixf->width() - 1;
if(y >= (int)m_pixf->height()) y = m_pixf->height() - 1;
return m_pixf->pix_ptr(x, y);
}
public:
AGG_INLINE const int8u* span(int x, int y, unsigned len)
{
m_x = m_x0 = x;
m_y = y;
if(y >= 0 && y < (int)m_pixf->height() &&
x >= 0 && x+len <= (int)m_pixf->width())
{
return m_pix_ptr = m_pixf->pix_ptr(x, y);
}
m_pix_ptr = 0;
return pixel();
}
AGG_INLINE const int8u* next_x()
{
if(m_pix_ptr) return m_pix_ptr += pix_width;
++m_x;
return pixel();
}
AGG_INLINE const int8u* next_y()
{
++m_y;
m_x = m_x0;
if(m_pix_ptr &&
m_y >= 0 && m_y < (int)m_pixf->height())
{
return m_pix_ptr = m_pixf->pix_ptr(m_x, m_y);
}
m_pix_ptr = 0;
return pixel();
}
private:
const pixfmt_type* m_pixf;
int m_x, m_x0, m_y;
const int8u* m_pix_ptr;
};
//-----------------------------------------------------image_accessor_wrap
template<class PixFmt, class WrapX, class WrapY> class image_accessor_wrap
{
public:
typedef PixFmt pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::order_type order_type;
typedef typename pixfmt_type::value_type value_type;
enum pix_width_e { pix_width = pixfmt_type::pix_width };
image_accessor_wrap() {}
explicit image_accessor_wrap(pixfmt_type& pixf) :
m_pixf(&pixf),
m_wrap_x(pixf.width()),
m_wrap_y(pixf.height())
{}
void attach(pixfmt_type& pixf)
{
m_pixf = &pixf;
}
AGG_INLINE const int8u* span(int x, int y, unsigned)
{
m_x = x;
m_row_ptr = m_pixf->pix_ptr(0, m_wrap_y(y));
return m_row_ptr + m_wrap_x(x) * pix_width;
}
AGG_INLINE const int8u* next_x()
{
int x = ++m_wrap_x;
return m_row_ptr + x * pix_width;
}
AGG_INLINE const int8u* next_y()
{
m_row_ptr = m_pixf->pix_ptr(0, ++m_wrap_y);
return m_row_ptr + m_wrap_x(m_x) * pix_width;
}
private:
const pixfmt_type* m_pixf;
const int8u* m_row_ptr;
int m_x;
WrapX m_wrap_x;
WrapY m_wrap_y;
};
//--------------------------------------------------------wrap_mode_repeat
class wrap_mode_repeat
{
public:
wrap_mode_repeat() {}
wrap_mode_repeat(unsigned size) :
m_size(size),
m_add(size * (0x3FFFFFFF / size)),
m_value(0)
{}
AGG_INLINE unsigned operator() (int v)
{
return m_value = (unsigned(v) + m_add) % m_size;
}
AGG_INLINE unsigned operator++ ()
{
++m_value;
if(m_value >= m_size) m_value = 0;
return m_value;
}
private:
unsigned m_size;
unsigned m_add;
unsigned m_value;
};
//---------------------------------------------------wrap_mode_repeat_pow2
class wrap_mode_repeat_pow2
{
public:
wrap_mode_repeat_pow2() {}
wrap_mode_repeat_pow2(unsigned size) : m_value(0)
{
m_mask = 1;
while(m_mask < size) m_mask = (m_mask << 1) | 1;
m_mask >>= 1;
}
AGG_INLINE unsigned operator() (int v)
{
return m_value = unsigned(v) & m_mask;
}
AGG_INLINE unsigned operator++ ()
{
++m_value;
if(m_value > m_mask) m_value = 0;
return m_value;
}
private:
unsigned m_mask;
unsigned m_value;
};
//----------------------------------------------wrap_mode_repeat_auto_pow2
class wrap_mode_repeat_auto_pow2
{
public:
wrap_mode_repeat_auto_pow2() {}
wrap_mode_repeat_auto_pow2(unsigned size) :
m_size(size),
m_add(size * (0x3FFFFFFF / size)),
m_mask((m_size & (m_size-1)) ? 0 : m_size-1),
m_value(0)
{}
AGG_INLINE unsigned operator() (int v)
{
if(m_mask) return m_value = unsigned(v) & m_mask;
return m_value = (unsigned(v) + m_add) % m_size;
}
AGG_INLINE unsigned operator++ ()
{
++m_value;
if(m_value >= m_size) m_value = 0;
return m_value;
}
private:
unsigned m_size;
unsigned m_add;
unsigned m_mask;
unsigned m_value;
};
//-------------------------------------------------------wrap_mode_reflect
class wrap_mode_reflect
{
public:
wrap_mode_reflect() {}
wrap_mode_reflect(unsigned size) :
m_size(size),
m_size2(size * 2),
m_add(m_size2 * (0x3FFFFFFF / m_size2)),
m_value(0)
{}
AGG_INLINE unsigned operator() (int v)
{
m_value = (unsigned(v) + m_add) % m_size2;
if(m_value >= m_size) return m_size2 - m_value - 1;
return m_value;
}
AGG_INLINE unsigned operator++ ()
{
++m_value;
if(m_value >= m_size2) m_value = 0;
if(m_value >= m_size) return m_size2 - m_value - 1;
return m_value;
}
private:
unsigned m_size;
unsigned m_size2;
unsigned m_add;
unsigned m_value;
};
//--------------------------------------------------wrap_mode_reflect_pow2
class wrap_mode_reflect_pow2
{
public:
wrap_mode_reflect_pow2() {}
wrap_mode_reflect_pow2(unsigned size) : m_value(0)
{
m_mask = 1;
m_size = 1;
while(m_mask < size)
{
m_mask = (m_mask << 1) | 1;
m_size <<= 1;
}
}
AGG_INLINE unsigned operator() (int v)
{
m_value = unsigned(v) & m_mask;
if(m_value >= m_size) return m_mask - m_value;
return m_value;
}
AGG_INLINE unsigned operator++ ()
{
++m_value;
m_value &= m_mask;
if(m_value >= m_size) return m_mask - m_value;
return m_value;
}
private:
unsigned m_size;
unsigned m_mask;
unsigned m_value;
};
//---------------------------------------------wrap_mode_reflect_auto_pow2
class wrap_mode_reflect_auto_pow2
{
public:
wrap_mode_reflect_auto_pow2() {}
wrap_mode_reflect_auto_pow2(unsigned size) :
m_size(size),
m_size2(size * 2),
m_add(m_size2 * (0x3FFFFFFF / m_size2)),
m_mask((m_size2 & (m_size2-1)) ? 0 : m_size2-1),
m_value(0)
{}
AGG_INLINE unsigned operator() (int v)
{
m_value = m_mask ? unsigned(v) & m_mask :
(unsigned(v) + m_add) % m_size2;
if(m_value >= m_size) return m_size2 - m_value - 1;
return m_value;
}
AGG_INLINE unsigned operator++ ()
{
++m_value;
if(m_value >= m_size2) m_value = 0;
if(m_value >= m_size) return m_size2 - m_value - 1;
return m_value;
}
private:
unsigned m_size;
unsigned m_size2;
unsigned m_add;
unsigned m_mask;
unsigned m_value;
};
}
#endif

449
xs/src/agg/agg_image_filters.h
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@ -1,449 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Image transformation filters,
// Filtering classes (image_filter_lut, image_filter),
// Basic filter shape classes
//----------------------------------------------------------------------------
#ifndef AGG_IMAGE_FILTERS_INCLUDED
#define AGG_IMAGE_FILTERS_INCLUDED
#include "agg_array.h"
#include "agg_math.h"
namespace agg
{
// See Implementation agg_image_filters.cpp
enum image_filter_scale_e
{
image_filter_shift = 14, //----image_filter_shift
image_filter_scale = 1 << image_filter_shift, //----image_filter_scale
image_filter_mask = image_filter_scale - 1 //----image_filter_mask
};
enum image_subpixel_scale_e
{
image_subpixel_shift = 8, //----image_subpixel_shift
image_subpixel_scale = 1 << image_subpixel_shift, //----image_subpixel_scale
image_subpixel_mask = image_subpixel_scale - 1 //----image_subpixel_mask
};
//-----------------------------------------------------image_filter_lut
class image_filter_lut
{
public:
template<class FilterF> void calculate(const FilterF& filter,
bool normalization=true)
{
filter; // prevent erroneous C4100 in MSVC
double r = filter.radius();
realloc_lut(r);
unsigned i;
unsigned pivot = diameter() << (image_subpixel_shift - 1);
for(i = 0; i < pivot; i++)
{
double x = double(i) / double(image_subpixel_scale);
double y = filter.calc_weight(x);
m_weight_array[pivot + i] =
m_weight_array[pivot - i] = (int16)iround(y * image_filter_scale);
}
unsigned end = (diameter() << image_subpixel_shift) - 1;
m_weight_array[0] = m_weight_array[end];
if(normalization)
{
normalize();
}
}
image_filter_lut() : m_radius(0), m_diameter(0), m_start(0) {}
template<class FilterF> image_filter_lut(const FilterF& filter,
bool normalization=true)
{
calculate(filter, normalization);
}
double radius() const { return m_radius; }
unsigned diameter() const { return m_diameter; }
int start() const { return m_start; }
const int16* weight_array() const { return &m_weight_array[0]; }
void normalize();
private:
void realloc_lut(double radius);
image_filter_lut(const image_filter_lut&);
const image_filter_lut& operator = (const image_filter_lut&);
double m_radius;
unsigned m_diameter;
int m_start;
pod_array<int16> m_weight_array;
};
//--------------------------------------------------------image_filter
template<class FilterF> class image_filter : public image_filter_lut
{
public:
image_filter()
{
calculate(m_filter_function);
}
private:
FilterF m_filter_function;
};
//-----------------------------------------------image_filter_bilinear
struct image_filter_bilinear
{
static double radius() { return 1.0; }
static double calc_weight(double x)
{
return 1.0 - x;
}
};
//-----------------------------------------------image_filter_hanning
struct image_filter_hanning
{
static double radius() { return 1.0; }
static double calc_weight(double x)
{
return 0.5 + 0.5 * cos(pi * x);
}
};
//-----------------------------------------------image_filter_hamming
struct image_filter_hamming
{
static double radius() { return 1.0; }
static double calc_weight(double x)
{
return 0.54 + 0.46 * cos(pi * x);
}
};
//-----------------------------------------------image_filter_hermite
struct image_filter_hermite
{
static double radius() { return 1.0; }
static double calc_weight(double x)
{
return (2.0 * x - 3.0) * x * x + 1.0;
}
};
//------------------------------------------------image_filter_quadric
struct image_filter_quadric
{
static double radius() { return 1.5; }
static double calc_weight(double x)
{
double t;
if(x < 0.5) return 0.75 - x * x;
if(x < 1.5) {t = x - 1.5; return 0.5 * t * t;}
return 0.0;
}
};
//------------------------------------------------image_filter_bicubic
class image_filter_bicubic
{
static double pow3(double x)
{
return (x <= 0.0) ? 0.0 : x * x * x;
}
public:
static double radius() { return 2.0; }
static double calc_weight(double x)
{
return
(1.0/6.0) *
(pow3(x + 2) - 4 * pow3(x + 1) + 6 * pow3(x) - 4 * pow3(x - 1));
}
};
//-------------------------------------------------image_filter_kaiser
class image_filter_kaiser
{
double a;
double i0a;
double epsilon;
public:
image_filter_kaiser(double b = 6.33) :
a(b), epsilon(1e-12)
{
i0a = 1.0 / bessel_i0(b);
}
static double radius() { return 1.0; }
double calc_weight(double x) const
{
return bessel_i0(a * sqrt(1. - x * x)) * i0a;
}
private:
double bessel_i0(double x) const
{
int i;
double sum, y, t;
sum = 1.;
y = x * x / 4.;
t = y;
for(i = 2; t > epsilon; i++)
{
sum += t;
t *= (double)y / (i * i);
}
return sum;
}
};
//----------------------------------------------image_filter_catrom
struct image_filter_catrom
{
static double radius() { return 2.0; }
static double calc_weight(double x)
{
if(x < 1.0) return 0.5 * (2.0 + x * x * (-5.0 + x * 3.0));
if(x < 2.0) return 0.5 * (4.0 + x * (-8.0 + x * (5.0 - x)));
return 0.;
}
};
//---------------------------------------------image_filter_mitchell
class image_filter_mitchell
{
double p0, p2, p3;
double q0, q1, q2, q3;
public:
image_filter_mitchell(double b = 1.0/3.0, double c = 1.0/3.0) :
p0((6.0 - 2.0 * b) / 6.0),
p2((-18.0 + 12.0 * b + 6.0 * c) / 6.0),
p3((12.0 - 9.0 * b - 6.0 * c) / 6.0),
q0((8.0 * b + 24.0 * c) / 6.0),
q1((-12.0 * b - 48.0 * c) / 6.0),
q2((6.0 * b + 30.0 * c) / 6.0),
q3((-b - 6.0 * c) / 6.0)
{}
static double radius() { return 2.0; }
double calc_weight(double x) const
{
if(x < 1.0) return p0 + x * x * (p2 + x * p3);
if(x < 2.0) return q0 + x * (q1 + x * (q2 + x * q3));
return 0.0;
}
};
//----------------------------------------------image_filter_spline16
struct image_filter_spline16
{
static double radius() { return 2.0; }
static double calc_weight(double x)
{
if(x < 1.0)
{
return ((x - 9.0/5.0 ) * x - 1.0/5.0 ) * x + 1.0;
}
return ((-1.0/3.0 * (x-1) + 4.0/5.0) * (x-1) - 7.0/15.0 ) * (x-1);
}
};
//---------------------------------------------image_filter_spline36
struct image_filter_spline36
{
static double radius() { return 3.0; }
static double calc_weight(double x)
{
if(x < 1.0)
{
return ((13.0/11.0 * x - 453.0/209.0) * x - 3.0/209.0) * x + 1.0;
}
if(x < 2.0)
{
return ((-6.0/11.0 * (x-1) + 270.0/209.0) * (x-1) - 156.0/ 209.0) * (x-1);
}
return ((1.0/11.0 * (x-2) - 45.0/209.0) * (x-2) + 26.0/209.0) * (x-2);
}
};
//----------------------------------------------image_filter_gaussian
struct image_filter_gaussian
{
static double radius() { return 2.0; }
static double calc_weight(double x)
{
return exp(-2.0 * x * x) * sqrt(2.0 / pi);
}
};
//------------------------------------------------image_filter_bessel
struct image_filter_bessel
{
static double radius() { return 3.2383; }
static double calc_weight(double x)
{
return (x == 0.0) ? pi / 4.0 : besj(pi * x, 1) / (2.0 * x);
}
};
//-------------------------------------------------image_filter_sinc
class image_filter_sinc
{
public:
image_filter_sinc(double r) : m_radius(r < 2.0 ? 2.0 : r) {}
double radius() const { return m_radius; }
double calc_weight(double x) const
{
if(x == 0.0) return 1.0;
x *= pi;
return sin(x) / x;
}
private:
double m_radius;
};
//-----------------------------------------------image_filter_lanczos
class image_filter_lanczos
{
public:
image_filter_lanczos(double r) : m_radius(r < 2.0 ? 2.0 : r) {}
double radius() const { return m_radius; }
double calc_weight(double x) const
{
if(x == 0.0) return 1.0;
if(x > m_radius) return 0.0;
x *= pi;
double xr = x / m_radius;
return (sin(x) / x) * (sin(xr) / xr);
}
private:
double m_radius;
};
//----------------------------------------------image_filter_blackman
class image_filter_blackman
{
public:
image_filter_blackman(double r) : m_radius(r < 2.0 ? 2.0 : r) {}
double radius() const { return m_radius; }
double calc_weight(double x) const
{
if(x == 0.0) return 1.0;
if(x > m_radius) return 0.0;
x *= pi;
double xr = x / m_radius;
return (sin(x) / x) * (0.42 + 0.5*cos(xr) + 0.08*cos(2*xr));
}
private:
double m_radius;
};
//------------------------------------------------image_filter_sinc36
class image_filter_sinc36 : public image_filter_sinc
{ public: image_filter_sinc36() : image_filter_sinc(3.0){} };
//------------------------------------------------image_filter_sinc64
class image_filter_sinc64 : public image_filter_sinc
{ public: image_filter_sinc64() : image_filter_sinc(4.0){} };
//-----------------------------------------------image_filter_sinc100
class image_filter_sinc100 : public image_filter_sinc
{ public: image_filter_sinc100() : image_filter_sinc(5.0){} };
//-----------------------------------------------image_filter_sinc144
class image_filter_sinc144 : public image_filter_sinc
{ public: image_filter_sinc144() : image_filter_sinc(6.0){} };
//-----------------------------------------------image_filter_sinc196
class image_filter_sinc196 : public image_filter_sinc
{ public: image_filter_sinc196() : image_filter_sinc(7.0){} };
//-----------------------------------------------image_filter_sinc256
class image_filter_sinc256 : public image_filter_sinc
{ public: image_filter_sinc256() : image_filter_sinc(8.0){} };
//---------------------------------------------image_filter_lanczos36
class image_filter_lanczos36 : public image_filter_lanczos
{ public: image_filter_lanczos36() : image_filter_lanczos(3.0){} };
//---------------------------------------------image_filter_lanczos64
class image_filter_lanczos64 : public image_filter_lanczos
{ public: image_filter_lanczos64() : image_filter_lanczos(4.0){} };
//--------------------------------------------image_filter_lanczos100
class image_filter_lanczos100 : public image_filter_lanczos
{ public: image_filter_lanczos100() : image_filter_lanczos(5.0){} };
//--------------------------------------------image_filter_lanczos144
class image_filter_lanczos144 : public image_filter_lanczos
{ public: image_filter_lanczos144() : image_filter_lanczos(6.0){} };
//--------------------------------------------image_filter_lanczos196
class image_filter_lanczos196 : public image_filter_lanczos
{ public: image_filter_lanczos196() : image_filter_lanczos(7.0){} };
//--------------------------------------------image_filter_lanczos256
class image_filter_lanczos256 : public image_filter_lanczos
{ public: image_filter_lanczos256() : image_filter_lanczos(8.0){} };
//--------------------------------------------image_filter_blackman36
class image_filter_blackman36 : public image_filter_blackman
{ public: image_filter_blackman36() : image_filter_blackman(3.0){} };
//--------------------------------------------image_filter_blackman64
class image_filter_blackman64 : public image_filter_blackman
{ public: image_filter_blackman64() : image_filter_blackman(4.0){} };
//-------------------------------------------image_filter_blackman100
class image_filter_blackman100 : public image_filter_blackman
{ public: image_filter_blackman100() : image_filter_blackman(5.0){} };
//-------------------------------------------image_filter_blackman144
class image_filter_blackman144 : public image_filter_blackman
{ public: image_filter_blackman144() : image_filter_blackman(6.0){} };
//-------------------------------------------image_filter_blackman196
class image_filter_blackman196 : public image_filter_blackman
{ public: image_filter_blackman196() : image_filter_blackman(7.0){} };
//-------------------------------------------image_filter_blackman256
class image_filter_blackman256 : public image_filter_blackman
{ public: image_filter_blackman256() : image_filter_blackman(8.0){} };
}
#endif

189
xs/src/agg/agg_line_aa_basics.h
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@ -1,189 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_LINE_AA_BASICS_INCLUDED
#define AGG_LINE_AA_BASICS_INCLUDED
#include <stdlib.h>
#include "agg_basics.h"
namespace agg
{
// See Implementation agg_line_aa_basics.cpp
//-------------------------------------------------------------------------
enum line_subpixel_scale_e
{
line_subpixel_shift = 8, //----line_subpixel_shift
line_subpixel_scale = 1 << line_subpixel_shift, //----line_subpixel_scale
line_subpixel_mask = line_subpixel_scale - 1, //----line_subpixel_mask
line_max_coord = (1 << 28) - 1, //----line_max_coord
line_max_length = 1 << (line_subpixel_shift + 10) //----line_max_length
};
//-------------------------------------------------------------------------
enum line_mr_subpixel_scale_e
{
line_mr_subpixel_shift = 4, //----line_mr_subpixel_shift
line_mr_subpixel_scale = 1 << line_mr_subpixel_shift, //----line_mr_subpixel_scale
line_mr_subpixel_mask = line_mr_subpixel_scale - 1 //----line_mr_subpixel_mask
};
//------------------------------------------------------------------line_mr
AGG_INLINE int line_mr(int x)
{
return x >> (line_subpixel_shift - line_mr_subpixel_shift);
}
//-------------------------------------------------------------------line_hr
AGG_INLINE int line_hr(int x)
{
return x << (line_subpixel_shift - line_mr_subpixel_shift);
}
//---------------------------------------------------------------line_dbl_hr
AGG_INLINE int line_dbl_hr(int x)
{
return x << line_subpixel_shift;
}
//---------------------------------------------------------------line_coord
struct line_coord
{
AGG_INLINE static int conv(double x)
{
return iround(x * line_subpixel_scale);
}
};
//-----------------------------------------------------------line_coord_sat
struct line_coord_sat
{
AGG_INLINE static int conv(double x)
{
return saturation<line_max_coord>::iround(x * line_subpixel_scale);
}
};
//==========================================================line_parameters
struct line_parameters
{
//---------------------------------------------------------------------
line_parameters() {}
line_parameters(int x1_, int y1_, int x2_, int y2_, int len_) :
x1(x1_), y1(y1_), x2(x2_), y2(y2_),
dx(abs(x2_ - x1_)),
dy(abs(y2_ - y1_)),
sx((x2_ > x1_) ? 1 : -1),
sy((y2_ > y1_) ? 1 : -1),
vertical(dy >= dx),
inc(vertical ? sy : sx),
len(len_),
octant((sy & 4) | (sx & 2) | int(vertical))
{
}
//---------------------------------------------------------------------
unsigned orthogonal_quadrant() const { return s_orthogonal_quadrant[octant]; }
unsigned diagonal_quadrant() const { return s_diagonal_quadrant[octant]; }
//---------------------------------------------------------------------
bool same_orthogonal_quadrant(const line_parameters& lp) const
{
return s_orthogonal_quadrant[octant] == s_orthogonal_quadrant[lp.octant];
}
//---------------------------------------------------------------------
bool same_diagonal_quadrant(const line_parameters& lp) const
{
return s_diagonal_quadrant[octant] == s_diagonal_quadrant[lp.octant];
}
//---------------------------------------------------------------------
void divide(line_parameters& lp1, line_parameters& lp2) const
{
int xmid = (x1 + x2) >> 1;
int ymid = (y1 + y2) >> 1;
int len2 = len >> 1;
lp1 = *this;
lp2 = *this;
lp1.x2 = xmid;
lp1.y2 = ymid;
lp1.len = len2;
lp1.dx = abs(lp1.x2 - lp1.x1);
lp1.dy = abs(lp1.y2 - lp1.y1);
lp2.x1 = xmid;
lp2.y1 = ymid;
lp2.len = len2;
lp2.dx = abs(lp2.x2 - lp2.x1);
lp2.dy = abs(lp2.y2 - lp2.y1);
}
//---------------------------------------------------------------------
int x1, y1, x2, y2, dx, dy, sx, sy;
bool vertical;
int inc;
int len;
int octant;
//---------------------------------------------------------------------
static const int8u s_orthogonal_quadrant[8];
static const int8u s_diagonal_quadrant[8];
};
// See Implementation agg_line_aa_basics.cpp
//----------------------------------------------------------------bisectrix
void bisectrix(const line_parameters& l1,
const line_parameters& l2,
int* x, int* y);
//-------------------------------------------fix_degenerate_bisectrix_start
void inline fix_degenerate_bisectrix_start(const line_parameters& lp,
int* x, int* y)
{
int d = iround((double(*x - lp.x2) * double(lp.y2 - lp.y1) -
double(*y - lp.y2) * double(lp.x2 - lp.x1)) / lp.len);
if(d < line_subpixel_scale/2)
{
*x = lp.x1 + (lp.y2 - lp.y1);
*y = lp.y1 - (lp.x2 - lp.x1);
}
}
//---------------------------------------------fix_degenerate_bisectrix_end
void inline fix_degenerate_bisectrix_end(const line_parameters& lp,
int* x, int* y)
{
int d = iround((double(*x - lp.x2) * double(lp.y2 - lp.y1) -
double(*y - lp.y2) * double(lp.x2 - lp.x1)) / lp.len);
if(d < line_subpixel_scale/2)
{
*x = lp.x2 + (lp.y2 - lp.y1);
*y = lp.y2 - (lp.x2 - lp.x1);
}
}
}
#endif

526
xs/src/agg/agg_math_stroke.h
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@ -1,526 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Stroke math
//
//----------------------------------------------------------------------------
#ifndef AGG_STROKE_MATH_INCLUDED
#define AGG_STROKE_MATH_INCLUDED
#include "agg_math.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//-------------------------------------------------------------line_cap_e
enum line_cap_e
{
butt_cap,
square_cap,
round_cap
};
//------------------------------------------------------------line_join_e
enum line_join_e
{
miter_join = 0,
miter_join_revert = 1,
round_join = 2,
bevel_join = 3,
miter_join_round = 4
};
//-----------------------------------------------------------inner_join_e
enum inner_join_e
{
inner_bevel,
inner_miter,
inner_jag,
inner_round
};
//------------------------------------------------------------math_stroke
template<class VertexConsumer> class math_stroke
{
public:
typedef typename VertexConsumer::value_type coord_type;
math_stroke();
void line_cap(line_cap_e lc) { m_line_cap = lc; }
void line_join(line_join_e lj) { m_line_join = lj; }
void inner_join(inner_join_e ij) { m_inner_join = ij; }
line_cap_e line_cap() const { return m_line_cap; }
line_join_e line_join() const { return m_line_join; }
inner_join_e inner_join() const { return m_inner_join; }
void width(double w);
void miter_limit(double ml) { m_miter_limit = ml; }
void miter_limit_theta(double t);
void inner_miter_limit(double ml) { m_inner_miter_limit = ml; }
void approximation_scale(double as) { m_approx_scale = as; }
double width() const { return m_width * 2.0; }
double miter_limit() const { return m_miter_limit; }
double inner_miter_limit() const { return m_inner_miter_limit; }
double approximation_scale() const { return m_approx_scale; }
void calc_cap(VertexConsumer& vc,
const vertex_dist& v0,
const vertex_dist& v1,
double len);
void calc_join(VertexConsumer& vc,
const vertex_dist& v0,
const vertex_dist& v1,
const vertex_dist& v2,
double len1,
double len2);
private:
AGG_INLINE void add_vertex(VertexConsumer& vc, double x, double y)
{
vc.add(coord_type(x, y));
}
void calc_arc(VertexConsumer& vc,
double x, double y,
double dx1, double dy1,
double dx2, double dy2);
void calc_miter(VertexConsumer& vc,
const vertex_dist& v0,
const vertex_dist& v1,
const vertex_dist& v2,
double dx1, double dy1,
double dx2, double dy2,
line_join_e lj,
double mlimit,
double dbevel);
double m_width;
double m_width_abs;
double m_width_eps;
int m_width_sign;
double m_miter_limit;
double m_inner_miter_limit;
double m_approx_scale;
line_cap_e m_line_cap;
line_join_e m_line_join;
inner_join_e m_inner_join;
};
//-----------------------------------------------------------------------
template<class VC> math_stroke<VC>::math_stroke() :
m_width(0.5),
m_width_abs(0.5),
m_width_eps(0.5/1024.0),
m_width_sign(1),
m_miter_limit(4.0),
m_inner_miter_limit(1.01),
m_approx_scale(1.0),
m_line_cap(butt_cap),
m_line_join(miter_join),
m_inner_join(inner_miter)
{
}
//-----------------------------------------------------------------------
template<class VC> void math_stroke<VC>::width(double w)
{
m_width = w * 0.5;
if(m_width < 0)
{
m_width_abs = -m_width;
m_width_sign = -1;
}
else
{
m_width_abs = m_width;
m_width_sign = 1;
}
m_width_eps = m_width / 1024.0;
}
//-----------------------------------------------------------------------
template<class VC> void math_stroke<VC>::miter_limit_theta(double t)
{
m_miter_limit = 1.0 / sin(t * 0.5) ;
}
//-----------------------------------------------------------------------
template<class VC>
void math_stroke<VC>::calc_arc(VC& vc,
double x, double y,
double dx1, double dy1,
double dx2, double dy2)
{
double a1 = atan2(dy1 * m_width_sign, dx1 * m_width_sign);
double a2 = atan2(dy2 * m_width_sign, dx2 * m_width_sign);
double da = a1 - a2;
int i, n;
da = acos(m_width_abs / (m_width_abs + 0.125 / m_approx_scale)) * 2;
add_vertex(vc, x + dx1, y + dy1);
if(m_width_sign > 0)
{
if(a1 > a2) a2 += 2 * pi;
n = int((a2 - a1) / da);
da = (a2 - a1) / (n + 1);
a1 += da;
for(i = 0; i < n; i++)
{
add_vertex(vc, x + cos(a1) * m_width, y + sin(a1) * m_width);
a1 += da;
}
}
else
{
if(a1 < a2) a2 -= 2 * pi;
n = int((a1 - a2) / da);
da = (a1 - a2) / (n + 1);
a1 -= da;
for(i = 0; i < n; i++)
{
add_vertex(vc, x + cos(a1) * m_width, y + sin(a1) * m_width);
a1 -= da;
}
}
add_vertex(vc, x + dx2, y + dy2);
}
//-----------------------------------------------------------------------
template<class VC>
void math_stroke<VC>::calc_miter(VC& vc,
const vertex_dist& v0,
const vertex_dist& v1,
const vertex_dist& v2,
double dx1, double dy1,
double dx2, double dy2,
line_join_e lj,
double mlimit,
double dbevel)
{
double xi = v1.x;
double yi = v1.y;
double di = 1;
double lim = m_width_abs * mlimit;
bool miter_limit_exceeded = true; // Assume the worst
bool intersection_failed = true; // Assume the worst
if(calc_intersection(v0.x + dx1, v0.y - dy1,
v1.x + dx1, v1.y - dy1,
v1.x + dx2, v1.y - dy2,
v2.x + dx2, v2.y - dy2,
&xi, &yi))
{
// Calculation of the intersection succeeded
//---------------------
di = calc_distance(v1.x, v1.y, xi, yi);
if(di <= lim)
{
// Inside the miter limit
//---------------------
add_vertex(vc, xi, yi);
miter_limit_exceeded = false;
}
intersection_failed = false;
}
else
{
// Calculation of the intersection failed, most probably
// the three points lie one straight line.
// First check if v0 and v2 lie on the opposite sides of vector:
// (v1.x, v1.y) -> (v1.x+dx1, v1.y-dy1), that is, the perpendicular
// to the line determined by vertices v0 and v1.
// This condition determines whether the next line segments continues
// the previous one or goes back.
//----------------
double x2 = v1.x + dx1;
double y2 = v1.y - dy1;
if((cross_product(v0.x, v0.y, v1.x, v1.y, x2, y2) < 0.0) ==
(cross_product(v1.x, v1.y, v2.x, v2.y, x2, y2) < 0.0))
{
// This case means that the next segment continues
// the previous one (straight line)
//-----------------
add_vertex(vc, v1.x + dx1, v1.y - dy1);
miter_limit_exceeded = false;
}
}
if(miter_limit_exceeded)
{
// Miter limit exceeded
//------------------------
switch(lj)
{
case miter_join_revert:
// For the compatibility with SVG, PDF, etc,
// we use a simple bevel join instead of
// "smart" bevel
//-------------------
add_vertex(vc, v1.x + dx1, v1.y - dy1);
add_vertex(vc, v1.x + dx2, v1.y - dy2);
break;
case miter_join_round:
calc_arc(vc, v1.x, v1.y, dx1, -dy1, dx2, -dy2);
break;
default:
// If no miter-revert, calculate new dx1, dy1, dx2, dy2
//----------------
if(intersection_failed)
{
mlimit *= m_width_sign;
add_vertex(vc, v1.x + dx1 + dy1 * mlimit,
v1.y - dy1 + dx1 * mlimit);
add_vertex(vc, v1.x + dx2 - dy2 * mlimit,
v1.y - dy2 - dx2 * mlimit);
}
else
{
double x1 = v1.x + dx1;
double y1 = v1.y - dy1;
double x2 = v1.x + dx2;
double y2 = v1.y - dy2;
di = (lim - dbevel) / (di - dbevel);
add_vertex(vc, x1 + (xi - x1) * di,
y1 + (yi - y1) * di);
add_vertex(vc, x2 + (xi - x2) * di,
y2 + (yi - y2) * di);
}
break;
}
}
}
//--------------------------------------------------------stroke_calc_cap
template<class VC>
void math_stroke<VC>::calc_cap(VC& vc,
const vertex_dist& v0,
const vertex_dist& v1,
double len)
{
vc.remove_all();
double dx1 = (v1.y - v0.y) / len;
double dy1 = (v1.x - v0.x) / len;
double dx2 = 0;
double dy2 = 0;
dx1 *= m_width;
dy1 *= m_width;
if(m_line_cap != round_cap)
{
if(m_line_cap == square_cap)
{
dx2 = dy1 * m_width_sign;
dy2 = dx1 * m_width_sign;
}
add_vertex(vc, v0.x - dx1 - dx2, v0.y + dy1 - dy2);
add_vertex(vc, v0.x + dx1 - dx2, v0.y - dy1 - dy2);
}
else
{
double da = acos(m_width_abs / (m_width_abs + 0.125 / m_approx_scale)) * 2;
double a1;
int i;
int n = int(pi / da);
da = pi / (n + 1);
add_vertex(vc, v0.x - dx1, v0.y + dy1);
if(m_width_sign > 0)
{
a1 = atan2(dy1, -dx1);
a1 += da;
for(i = 0; i < n; i++)
{
add_vertex(vc, v0.x + cos(a1) * m_width,
v0.y + sin(a1) * m_width);
a1 += da;
}
}
else
{
a1 = atan2(-dy1, dx1);
a1 -= da;
for(i = 0; i < n; i++)
{
add_vertex(vc, v0.x + cos(a1) * m_width,
v0.y + sin(a1) * m_width);
a1 -= da;
}
}
add_vertex(vc, v0.x + dx1, v0.y - dy1);
}
}
//-----------------------------------------------------------------------
template<class VC>
void math_stroke<VC>::calc_join(VC& vc,
const vertex_dist& v0,
const vertex_dist& v1,
const vertex_dist& v2,
double len1,
double len2)
{
double dx1 = m_width * (v1.y - v0.y) / len1;
double dy1 = m_width * (v1.x - v0.x) / len1;
double dx2 = m_width * (v2.y - v1.y) / len2;
double dy2 = m_width * (v2.x - v1.x) / len2;
vc.remove_all();
double cp = cross_product(v0.x, v0.y, v1.x, v1.y, v2.x, v2.y);
if(cp != 0 && (cp > 0) == (m_width > 0))
{
// Inner join
//---------------
double limit = ((len1 < len2) ? len1 : len2) / m_width_abs;
if(limit < m_inner_miter_limit)
{
limit = m_inner_miter_limit;
}
switch(m_inner_join)
{
default: // inner_bevel
add_vertex(vc, v1.x + dx1, v1.y - dy1);
add_vertex(vc, v1.x + dx2, v1.y - dy2);
break;
case inner_miter:
calc_miter(vc,
v0, v1, v2, dx1, dy1, dx2, dy2,
miter_join_revert,
limit, 0);
break;
case inner_jag:
case inner_round:
cp = (dx1-dx2) * (dx1-dx2) + (dy1-dy2) * (dy1-dy2);
if(cp < len1 * len1 && cp < len2 * len2)
{
calc_miter(vc,
v0, v1, v2, dx1, dy1, dx2, dy2,
miter_join_revert,
limit, 0);
}
else
{
if(m_inner_join == inner_jag)
{
add_vertex(vc, v1.x + dx1, v1.y - dy1);
add_vertex(vc, v1.x, v1.y );
add_vertex(vc, v1.x + dx2, v1.y - dy2);
}
else
{
add_vertex(vc, v1.x + dx1, v1.y - dy1);
add_vertex(vc, v1.x, v1.y );
calc_arc(vc, v1.x, v1.y, dx2, -dy2, dx1, -dy1);
add_vertex(vc, v1.x, v1.y );
add_vertex(vc, v1.x + dx2, v1.y - dy2);
}
}
break;
}
}
else
{
// Outer join
//---------------
// Calculate the distance between v1 and
// the central point of the bevel line segment
//---------------
double dx = (dx1 + dx2) / 2;
double dy = (dy1 + dy2) / 2;
double dbevel = sqrt(dx * dx + dy * dy);
if(m_line_join == round_join || m_line_join == bevel_join)
{
// This is an optimization that reduces the number of points
// in cases of almost collinear segments. If there's no
// visible difference between bevel and miter joins we'd rather
// use miter join because it adds only one point instead of two.
//
// Here we calculate the middle point between the bevel points
// and then, the distance between v1 and this middle point.
// At outer joins this distance always less than stroke width,
// because it's actually the height of an isosceles triangle of
// v1 and its two bevel points. If the difference between this
// width and this value is small (no visible bevel) we can
// add just one point.
//
// The constant in the expression makes the result approximately
// the same as in round joins and caps. You can safely comment
// out this entire "if".
//-------------------
if(m_approx_scale * (m_width_abs - dbevel) < m_width_eps)
{
if(calc_intersection(v0.x + dx1, v0.y - dy1,
v1.x + dx1, v1.y - dy1,
v1.x + dx2, v1.y - dy2,
v2.x + dx2, v2.y - dy2,
&dx, &dy))
{
add_vertex(vc, dx, dy);
}
else
{
add_vertex(vc, v1.x + dx1, v1.y - dy1);
}
return;
}
}
switch(m_line_join)
{
case miter_join:
case miter_join_revert:
case miter_join_round:
calc_miter(vc,
v0, v1, v2, dx1, dy1, dx2, dy2,
m_line_join,
m_miter_limit,
dbevel);
break;
case round_join:
calc_arc(vc, v1.x, v1.y, dx1, -dy1, dx2, -dy2);
break;
default: // Bevel join
add_vertex(vc, v1.x + dx1, v1.y - dy1);
add_vertex(vc, v1.x + dx2, v1.y - dy2);
break;
}
}
}
}
#endif

65
xs/src/agg/agg_path_length.h
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@ -1,65 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_PATH_LENGTH_INCLUDED
#define AGG_PATH_LENGTH_INCLUDED
#include "agg_math.h"
namespace agg
{
template<class VertexSource>
double path_length(VertexSource& vs, unsigned path_id = 0)
{
double len = 0.0;
double start_x = 0.0;
double start_y = 0.0;
double x1 = 0.0;
double y1 = 0.0;
double x2 = 0.0;
double y2 = 0.0;
bool first = true;
unsigned cmd;
vs.rewind(path_id);
while(!is_stop(cmd = vs.vertex(&x2, &y2)))
{
if(is_vertex(cmd))
{
if(first || is_move_to(cmd))
{
start_x = x2;
start_y = y2;
}
else
{
len += calc_distance(x1, y1, x2, y2);
}
x1 = x2;
y1 = y2;
first = false;
}
else
{
if(is_close(cmd) && !first)
{
len += calc_distance(x1, y1, start_x, start_y);
}
}
}
return len;
}
}
#endif

295
xs/src/agg/agg_path_storage_integer.h
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@ -1,295 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_PATH_STORAGE_INTEGER_INCLUDED
#define AGG_PATH_STORAGE_INTEGER_INCLUDED
#include <string.h>
#include "agg_array.h"
namespace agg
{
//---------------------------------------------------------vertex_integer
template<class T, unsigned CoordShift=6> struct vertex_integer
{
enum path_cmd
{
cmd_move_to = 0,
cmd_line_to = 1,
cmd_curve3 = 2,
cmd_curve4 = 3
};
enum coord_scale_e
{
coord_shift = CoordShift,
coord_scale = 1 << coord_shift
};
T x,y;
vertex_integer() {}
vertex_integer(T x_, T y_, unsigned flag) :
x(((x_ << 1) & ~1) | (flag & 1)),
y(((y_ << 1) & ~1) | (flag >> 1)) {}
unsigned vertex(double* x_, double* y_,
double dx=0, double dy=0,
double scale=1.0) const
{
*x_ = dx + (double(x >> 1) / coord_scale) * scale;
*y_ = dy + (double(y >> 1) / coord_scale) * scale;
switch(((y & 1) << 1) | (x & 1))
{
case cmd_move_to: return path_cmd_move_to;
case cmd_line_to: return path_cmd_line_to;
case cmd_curve3: return path_cmd_curve3;
case cmd_curve4: return path_cmd_curve4;
}
return path_cmd_stop;
}
};
//---------------------------------------------------path_storage_integer
template<class T, unsigned CoordShift=6> class path_storage_integer
{
public:
typedef T value_type;
typedef vertex_integer<T, CoordShift> vertex_integer_type;
//--------------------------------------------------------------------
path_storage_integer() : m_storage(), m_vertex_idx(0), m_closed(true) {}
//--------------------------------------------------------------------
void remove_all() { m_storage.remove_all(); }
//--------------------------------------------------------------------
void move_to(T x, T y)
{
m_storage.add(vertex_integer_type(x, y, vertex_integer_type::cmd_move_to));
}
//--------------------------------------------------------------------
void line_to(T x, T y)
{
m_storage.add(vertex_integer_type(x, y, vertex_integer_type::cmd_line_to));
}
//--------------------------------------------------------------------
void curve3(T x_ctrl, T y_ctrl,
T x_to, T y_to)
{
m_storage.add(vertex_integer_type(x_ctrl, y_ctrl, vertex_integer_type::cmd_curve3));
m_storage.add(vertex_integer_type(x_to, y_to, vertex_integer_type::cmd_curve3));
}
//--------------------------------------------------------------------
void curve4(T x_ctrl1, T y_ctrl1,
T x_ctrl2, T y_ctrl2,
T x_to, T y_to)
{
m_storage.add(vertex_integer_type(x_ctrl1, y_ctrl1, vertex_integer_type::cmd_curve4));
m_storage.add(vertex_integer_type(x_ctrl2, y_ctrl2, vertex_integer_type::cmd_curve4));
m_storage.add(vertex_integer_type(x_to, y_to, vertex_integer_type::cmd_curve4));
}
//--------------------------------------------------------------------
void close_polygon() {}
//--------------------------------------------------------------------
unsigned size() const { return m_storage.size(); }
unsigned vertex(unsigned idx, double* x, double* y) const
{
return m_storage[idx].vertex(x, y);
}
//--------------------------------------------------------------------
unsigned byte_size() const { return m_storage.size() * sizeof(vertex_integer_type); }
void serialize(int8u* ptr) const
{
unsigned i;
for(i = 0; i < m_storage.size(); i++)
{
memcpy(ptr, &m_storage[i], sizeof(vertex_integer_type));
ptr += sizeof(vertex_integer_type);
}
}
//--------------------------------------------------------------------
void rewind(unsigned)
{
m_vertex_idx = 0;
m_closed = true;
}
//--------------------------------------------------------------------
unsigned vertex(double* x, double* y)
{
if(m_storage.size() < 2 || m_vertex_idx > m_storage.size())
{
*x = 0;
*y = 0;
return path_cmd_stop;
}
if(m_vertex_idx == m_storage.size())
{
*x = 0;
*y = 0;
++m_vertex_idx;
return path_cmd_end_poly | path_flags_close;
}
unsigned cmd = m_storage[m_vertex_idx].vertex(x, y);
if(is_move_to(cmd) && !m_closed)
{
*x = 0;
*y = 0;
m_closed = true;
return path_cmd_end_poly | path_flags_close;
}
m_closed = false;
++m_vertex_idx;
return cmd;
}
//--------------------------------------------------------------------
rect_d bounding_rect() const
{
rect_d bounds(1e100, 1e100, -1e100, -1e100);
if(m_storage.size() == 0)
{
bounds.x1 = bounds.y1 = bounds.x2 = bounds.y2 = 0.0;
}
else
{
unsigned i;
for(i = 0; i < m_storage.size(); i++)
{
double x, y;
m_storage[i].vertex(&x, &y);
if(x < bounds.x1) bounds.x1 = x;
if(y < bounds.y1) bounds.y1 = y;
if(x > bounds.x2) bounds.x2 = x;
if(y > bounds.y2) bounds.y2 = y;
}
}
return bounds;
}
private:
pod_bvector<vertex_integer_type, 6> m_storage;
unsigned m_vertex_idx;
bool m_closed;
};
//-----------------------------------------serialized_integer_path_adaptor
template<class T, unsigned CoordShift=6> class serialized_integer_path_adaptor
{
public:
typedef vertex_integer<T, CoordShift> vertex_integer_type;
//--------------------------------------------------------------------
serialized_integer_path_adaptor() :
m_data(0),
m_end(0),
m_ptr(0),
m_dx(0.0),
m_dy(0.0),
m_scale(1.0),
m_vertices(0)
{}
//--------------------------------------------------------------------
serialized_integer_path_adaptor(const int8u* data, unsigned size,
double dx, double dy) :
m_data(data),
m_end(data + size),
m_ptr(data),
m_dx(dx),
m_dy(dy),
m_vertices(0)
{}
//--------------------------------------------------------------------
void init(const int8u* data, unsigned size,
double dx, double dy, double scale=1.0)
{
m_data = data;
m_end = data + size;
m_ptr = data;
m_dx = dx;
m_dy = dy;
m_scale = scale;
m_vertices = 0;
}
//--------------------------------------------------------------------
void rewind(unsigned)
{
m_ptr = m_data;
m_vertices = 0;
}
//--------------------------------------------------------------------
unsigned vertex(double* x, double* y)
{
if(m_data == 0 || m_ptr > m_end)
{
*x = 0;
*y = 0;
return path_cmd_stop;
}
if(m_ptr == m_end)
{
*x = 0;
*y = 0;
m_ptr += sizeof(vertex_integer_type);
return path_cmd_end_poly | path_flags_close;
}
vertex_integer_type v;
memcpy(&v, m_ptr, sizeof(vertex_integer_type));
unsigned cmd = v.vertex(x, y, m_dx, m_dy, m_scale);
if(is_move_to(cmd) && m_vertices > 2)
{
*x = 0;
*y = 0;
m_vertices = 0;
return path_cmd_end_poly | path_flags_close;
}
++m_vertices;
m_ptr += sizeof(vertex_integer_type);
return cmd;
}
private:
const int8u* m_data;
const int8u* m_end;
const int8u* m_ptr;
double m_dx;
double m_dy;
double m_scale;
unsigned m_vertices;
};
}
#endif

123
xs/src/agg/agg_pattern_filters_rgba.h
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@ -1,123 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_PATTERN_FILTERS_RGBA8_INCLUDED
#define AGG_PATTERN_FILTERS_RGBA8_INCLUDED
#include "agg_basics.h"
#include "agg_line_aa_basics.h"
#include "agg_color_rgba.h"
namespace agg
{
//=======================================================pattern_filter_nn
template<class ColorT> struct pattern_filter_nn
{
typedef ColorT color_type;
static unsigned dilation() { return 0; }
static void AGG_INLINE pixel_low_res(color_type const* const* buf,
color_type* p, int x, int y)
{
*p = buf[y][x];
}
static void AGG_INLINE pixel_high_res(color_type const* const* buf,
color_type* p, int x, int y)
{
*p = buf[y >> line_subpixel_shift]
[x >> line_subpixel_shift];
}
};
typedef pattern_filter_nn<rgba8> pattern_filter_nn_rgba8;
typedef pattern_filter_nn<rgba16> pattern_filter_nn_rgba16;
//===========================================pattern_filter_bilinear_rgba
template<class ColorT> struct pattern_filter_bilinear_rgba
{
typedef ColorT color_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
static unsigned dilation() { return 1; }
static AGG_INLINE void pixel_low_res(color_type const* const* buf,
color_type* p, int x, int y)
{
*p = buf[y][x];
}
static AGG_INLINE void pixel_high_res(color_type const* const* buf,
color_type* p, int x, int y)
{
calc_type r, g, b, a;
r = g = b = a = 0;
calc_type weight;
int x_lr = x >> line_subpixel_shift;
int y_lr = y >> line_subpixel_shift;
x &= line_subpixel_mask;
y &= line_subpixel_mask;
const color_type* ptr = buf[y_lr] + x_lr;
weight = (line_subpixel_scale - x) *
(line_subpixel_scale - y);
r += weight * ptr->r;
g += weight * ptr->g;
b += weight * ptr->b;
a += weight * ptr->a;
++ptr;
weight = x * (line_subpixel_scale - y);
r += weight * ptr->r;
g += weight * ptr->g;
b += weight * ptr->b;
a += weight * ptr->a;
ptr = buf[y_lr + 1] + x_lr;
weight = (line_subpixel_scale - x) * y;
r += weight * ptr->r;
g += weight * ptr->g;
b += weight * ptr->b;
a += weight * ptr->a;
++ptr;
weight = x * y;
r += weight * ptr->r;
g += weight * ptr->g;
b += weight * ptr->b;
a += weight * ptr->a;
p->r = (value_type)color_type::downshift(r, line_subpixel_shift * 2);
p->g = (value_type)color_type::downshift(g, line_subpixel_shift * 2);
p->b = (value_type)color_type::downshift(b, line_subpixel_shift * 2);
p->a = (value_type)color_type::downshift(a, line_subpixel_shift * 2);
}
};
typedef pattern_filter_bilinear_rgba<rgba8> pattern_filter_bilinear_rgba8;
typedef pattern_filter_bilinear_rgba<rgba16> pattern_filter_bilinear_rgba16;
typedef pattern_filter_bilinear_rgba<rgba32> pattern_filter_bilinear_rgba32;
}
#endif

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xs/src/agg/agg_pixfmt_amask_adaptor.h
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@ -1,240 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_PIXFMT_AMASK_ADAPTOR_INCLUDED
#define AGG_PIXFMT_AMASK_ADAPTOR_INCLUDED
#include <string.h>
#include "agg_array.h"
#include "agg_rendering_buffer.h"
namespace agg
{
//==================================================pixfmt_amask_adaptor
template<class PixFmt, class AlphaMask> class pixfmt_amask_adaptor
{
public:
typedef PixFmt pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::row_data row_data;
typedef AlphaMask amask_type;
typedef typename amask_type::cover_type cover_type;
private:
enum span_extra_tail_e { span_extra_tail = 256 };
void realloc_span(unsigned len)
{
if(len > m_span.size())
{
m_span.resize(len + span_extra_tail);
}
}
void init_span(unsigned len)
{
realloc_span(len);
memset(&m_span[0], amask_type::cover_full, len * sizeof(cover_type));
}
void init_span(unsigned len, const cover_type* covers)
{
realloc_span(len);
memcpy(&m_span[0], covers, len * sizeof(cover_type));
}
public:
pixfmt_amask_adaptor(pixfmt_type& pixf, amask_type& mask) :
m_pixf(&pixf), m_mask(&mask), m_span()
{}
void attach_pixfmt(pixfmt_type& pixf) { m_pixf = &pixf; }
void attach_alpha_mask(amask_type& mask) { m_mask = &mask; }
//--------------------------------------------------------------------
template<class PixFmt2>
bool attach_pixfmt(PixFmt2& pixf, int x1, int y1, int x2, int y2)
{
return m_pixf->attach(pixf, x1, y1, x2, y2);
}
//--------------------------------------------------------------------
unsigned width() const { return m_pixf->width(); }
unsigned height() const { return m_pixf->height(); }
//--------------------------------------------------------------------
color_type pixel(int x, int y)
{
return m_pixf->pixel(x, y);
}
//--------------------------------------------------------------------
void copy_pixel(int x, int y, const color_type& c)
{
m_pixf->blend_pixel(x, y, c, m_mask->pixel(x, y));
}
//--------------------------------------------------------------------
void blend_pixel(int x, int y, const color_type& c, cover_type cover)
{
m_pixf->blend_pixel(x, y, c, m_mask->combine_pixel(x, y, cover));
}
//--------------------------------------------------------------------
void copy_hline(int x, int y,
unsigned len,
const color_type& c)
{
realloc_span(len);
m_mask->fill_hspan(x, y, &m_span[0], len);
m_pixf->blend_solid_hspan(x, y, len, c, &m_span[0]);
}
//--------------------------------------------------------------------
void blend_hline(int x, int y,
unsigned len,
const color_type& c,
cover_type)
{
init_span(len);
m_mask->combine_hspan(x, y, &m_span[0], len);
m_pixf->blend_solid_hspan(x, y, len, c, &m_span[0]);
}
//--------------------------------------------------------------------
void copy_vline(int x, int y,
unsigned len,
const color_type& c)
{
realloc_span(len);
m_mask->fill_vspan(x, y, &m_span[0], len);
m_pixf->blend_solid_vspan(x, y, len, c, &m_span[0]);
}
//--------------------------------------------------------------------
void blend_vline(int x, int y,
unsigned len,
const color_type& c,
cover_type)
{
init_span(len);
m_mask->combine_vspan(x, y, &m_span[0], len);
m_pixf->blend_solid_vspan(x, y, len, c, &m_span[0]);
}
//--------------------------------------------------------------------
void copy_from(const rendering_buffer& from,
int xdst, int ydst,
int xsrc, int ysrc,
unsigned len)
{
m_pixf->copy_from(from, xdst, ydst, xsrc, ysrc, len);
}
//--------------------------------------------------------------------
void blend_solid_hspan(int x, int y,
unsigned len,
const color_type& c,
const cover_type* covers)
{
init_span(len, covers);
m_mask->combine_hspan(x, y, &m_span[0], len);
m_pixf->blend_solid_hspan(x, y, len, c, &m_span[0]);
}
//--------------------------------------------------------------------
void blend_solid_vspan(int x, int y,
unsigned len,
const color_type& c,
const cover_type* covers)
{
init_span(len, covers);
m_mask->combine_vspan(x, y, &m_span[0], len);
m_pixf->blend_solid_vspan(x, y, len, c, &m_span[0]);
}
//--------------------------------------------------------------------
void copy_color_hspan(int x, int y, unsigned len, const color_type* colors)
{
realloc_span(len);
m_mask->fill_hspan(x, y, &m_span[0], len);
m_pixf->blend_color_hspan(x, y, len, colors, &m_span[0], cover_full);
}
//--------------------------------------------------------------------
void copy_color_vspan(int x, int y, unsigned len, const color_type* colors)
{
realloc_span(len);
m_mask->fill_vspan(x, y, &m_span[0], len);
m_pixf->blend_color_vspan(x, y, len, colors, &m_span[0], cover_full);
}
//--------------------------------------------------------------------
void blend_color_hspan(int x, int y,
unsigned len,
const color_type* colors,
const cover_type* covers,
cover_type cover = cover_full)
{
if(covers)
{
init_span(len, covers);
m_mask->combine_hspan(x, y, &m_span[0], len);
}
else
{
realloc_span(len);
m_mask->fill_hspan(x, y, &m_span[0], len);
}
m_pixf->blend_color_hspan(x, y, len, colors, &m_span[0], cover);
}
//--------------------------------------------------------------------
void blend_color_vspan(int x, int y,
unsigned len,
const color_type* colors,
const cover_type* covers,
cover_type cover = cover_full)
{
if(covers)
{
init_span(len, covers);
m_mask->combine_vspan(x, y, &m_span[0], len);
}
else
{
realloc_span(len);
m_mask->fill_vspan(x, y, &m_span[0], len);
}
m_pixf->blend_color_vspan(x, y, len, colors, &m_span[0], cover);
}
private:
pixfmt_type* m_pixf;
const amask_type* m_mask;
pod_array<cover_type> m_span;
};
}
#endif

1311
xs/src/agg/agg_pixfmt_rgb_packed.h
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2803
xs/src/agg/agg_pixfmt_rgba.h
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157
xs/src/agg/agg_pixfmt_transposer.h
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@ -1,157 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_PIXFMT_TRANSPOSER_INCLUDED
#define AGG_PIXFMT_TRANSPOSER_INCLUDED
#include "agg_basics.h"
namespace agg
{
//=======================================================pixfmt_transposer
template<class PixFmt> class pixfmt_transposer
{
public:
typedef PixFmt pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::row_data row_data;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
//--------------------------------------------------------------------
pixfmt_transposer() : m_pixf(0) {}
explicit pixfmt_transposer(pixfmt_type& pixf) : m_pixf(&pixf) {}
void attach(pixfmt_type& pixf) { m_pixf = &pixf; }
//--------------------------------------------------------------------
AGG_INLINE unsigned width() const { return m_pixf->height(); }
AGG_INLINE unsigned height() const { return m_pixf->width(); }
//--------------------------------------------------------------------
AGG_INLINE color_type pixel(int x, int y) const
{
return m_pixf->pixel(y, x);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
{
m_pixf->copy_pixel(y, x, c);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pixel(int x, int y,
const color_type& c,
int8u cover)
{
m_pixf->blend_pixel(y, x, c, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_hline(int x, int y,
unsigned len,
const color_type& c)
{
m_pixf->copy_vline(y, x, len, c);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_vline(int x, int y,
unsigned len,
const color_type& c)
{
m_pixf->copy_hline(y, x, len, c);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_hline(int x, int y,
unsigned len,
const color_type& c,
int8u cover)
{
m_pixf->blend_vline(y, x, len, c, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_vline(int x, int y,
unsigned len,
const color_type& c,
int8u cover)
{
m_pixf->blend_hline(y, x, len, c, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_solid_hspan(int x, int y,
unsigned len,
const color_type& c,
const int8u* covers)
{
m_pixf->blend_solid_vspan(y, x, len, c, covers);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_solid_vspan(int x, int y,
unsigned len,
const color_type& c,
const int8u* covers)
{
m_pixf->blend_solid_hspan(y, x, len, c, covers);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_color_hspan(int x, int y,
unsigned len,
const color_type* colors)
{
m_pixf->copy_color_vspan(y, x, len, colors);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_color_vspan(int x, int y,
unsigned len,
const color_type* colors)
{
m_pixf->copy_color_hspan(y, x, len, colors);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_color_hspan(int x, int y,
unsigned len,
const color_type* colors,
const int8u* covers,
int8u cover)
{
m_pixf->blend_color_vspan(y, x, len, colors, covers, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_color_vspan(int x, int y,
unsigned len,
const color_type* colors,
const int8u* covers,
int8u cover)
{
m_pixf->blend_color_hspan(y, x, len, colors, covers, cover);
}
private:
pixfmt_type* m_pixf;
};
}
#endif

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xs/src/agg/agg_rasterizer_compound_aa.h
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@ -1,665 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.3
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
//
// The author gratefully acknowleges the support of David Turner,
// Robert Wilhelm, and Werner Lemberg - the authors of the FreeType
// libray - in producing this work. See http://www.freetype.org for details.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for 32-bit screen coordinates has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_RASTERIZER_COMPOUND_AA_INCLUDED
#define AGG_RASTERIZER_COMPOUND_AA_INCLUDED
#include <limits>
#include "agg_rasterizer_cells_aa.h"
#include "agg_rasterizer_sl_clip.h"
namespace agg
{
//-----------------------------------------------------------cell_style_aa
// A pixel cell. There're no constructors defined and it was done
// intentionally in order to avoid extra overhead when allocating an
// array of cells.
struct cell_style_aa
{
int x;
int y;
int cover;
int area;
int16 left, right;
void initial()
{
x = std::numeric_limits<int>::max();
y = std::numeric_limits<int>::max();
cover = 0;
area = 0;
left = -1;
right = -1;
}
void style(const cell_style_aa& c)
{
left = c.left;
right = c.right;
}
int not_equal(int ex, int ey, const cell_style_aa& c) const
{
return ((unsigned)ex - (unsigned)x) | ((unsigned)ey - (unsigned)y) |
((unsigned)left - (unsigned)c.left) | ((unsigned)right - (unsigned)c.right);
}
};
//===========================================================layer_order_e
enum layer_order_e
{
layer_unsorted, //------layer_unsorted
layer_direct, //------layer_direct
layer_inverse //------layer_inverse
};
//==================================================rasterizer_compound_aa
template<class Clip=rasterizer_sl_clip_int> class rasterizer_compound_aa
{
struct style_info
{
unsigned start_cell;
unsigned num_cells;
int last_x;
};
struct cell_info
{
int x, area, cover;
};
public:
typedef Clip clip_type;
typedef typename Clip::conv_type conv_type;
typedef typename Clip::coord_type coord_type;
enum aa_scale_e
{
aa_shift = 8,
aa_scale = 1 << aa_shift,
aa_mask = aa_scale - 1,
aa_scale2 = aa_scale * 2,
aa_mask2 = aa_scale2 - 1
};
//--------------------------------------------------------------------
rasterizer_compound_aa() :
m_outline(),
m_clipper(),
m_filling_rule(fill_non_zero),
m_layer_order(layer_direct),
m_styles(), // Active Styles
m_ast(), // Active Style Table (unique values)
m_asm(), // Active Style Mask
m_cells(),
m_cover_buf(),
m_min_style(std::numeric_limits<int>::max()),
m_max_style(std::numeric_limits<int>::min()),
m_start_x(0),
m_start_y(0),
m_scan_y(std::numeric_limits<int>::max()),
m_sl_start(0),
m_sl_len(0)
{}
//--------------------------------------------------------------------
void reset();
void reset_clipping();
void clip_box(double x1, double y1, double x2, double y2);
void filling_rule(filling_rule_e filling_rule);
void layer_order(layer_order_e order);
//--------------------------------------------------------------------
void styles(int left, int right);
void move_to(int x, int y);
void line_to(int x, int y);
void move_to_d(double x, double y);
void line_to_d(double x, double y);
void add_vertex(double x, double y, unsigned cmd);
void edge(int x1, int y1, int x2, int y2);
void edge_d(double x1, double y1, double x2, double y2);
//-------------------------------------------------------------------
template<class VertexSource>
void add_path(VertexSource& vs, unsigned path_id=0)
{
double x;
double y;
unsigned cmd;
vs.rewind(path_id);
if(m_outline.sorted()) reset();
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
add_vertex(x, y, cmd);
}
}
//--------------------------------------------------------------------
int min_x() const { return m_outline.min_x(); }
int min_y() const { return m_outline.min_y(); }
int max_x() const { return m_outline.max_x(); }
int max_y() const { return m_outline.max_y(); }
int min_style() const { return m_min_style; }
int max_style() const { return m_max_style; }
//--------------------------------------------------------------------
void sort();
bool rewind_scanlines();
unsigned sweep_styles();
int scanline_start() const { return m_sl_start; }
unsigned scanline_length() const { return m_sl_len; }
unsigned style(unsigned style_idx) const;
cover_type* allocate_cover_buffer(unsigned len);
//--------------------------------------------------------------------
bool navigate_scanline(int y);
bool hit_test(int tx, int ty);
//--------------------------------------------------------------------
AGG_INLINE unsigned calculate_alpha(int area) const
{
int cover = area >> (poly_subpixel_shift*2 + 1 - aa_shift);
if(cover < 0) cover = -cover;
if(m_filling_rule == fill_even_odd)
{
cover &= aa_mask2;
if(cover > aa_scale)
{
cover = aa_scale2 - cover;
}
}
if(cover > aa_mask) cover = aa_mask;
return cover;
}
//--------------------------------------------------------------------
// Sweeps one scanline with one style index. The style ID can be
// determined by calling style().
template<class Scanline> bool sweep_scanline(Scanline& sl, int style_idx)
{
int scan_y = m_scan_y - 1;
if(scan_y > m_outline.max_y()) return false;
sl.reset_spans();
if(style_idx < 0)
{
style_idx = 0;
}
else
{
style_idx++;
}
const style_info& st = m_styles[m_ast[style_idx]];
unsigned num_cells = st.num_cells;
cell_info* cell = &m_cells[st.start_cell];
int cover = 0;
while(num_cells--)
{
unsigned alpha;
int x = cell->x;
int area = cell->area;
cover += cell->cover;
++cell;
if(area)
{
alpha = calculate_alpha((cover << (poly_subpixel_shift + 1)) - area);
sl.add_cell(x, alpha);
x++;
}
if(num_cells && cell->x > x)
{
alpha = calculate_alpha(cover << (poly_subpixel_shift + 1));
if(alpha)
{
sl.add_span(x, cell->x - x, alpha);
}
}
}
if(sl.num_spans() == 0) return false;
sl.finalize(scan_y);
return true;
}
private:
void add_style(int style_id);
//--------------------------------------------------------------------
// Disable copying
rasterizer_compound_aa(const rasterizer_compound_aa<Clip>&);
const rasterizer_compound_aa<Clip>&
operator = (const rasterizer_compound_aa<Clip>&);
private:
rasterizer_cells_aa<cell_style_aa> m_outline;
clip_type m_clipper;
filling_rule_e m_filling_rule;
layer_order_e m_layer_order;
pod_vector<style_info> m_styles; // Active Styles
pod_vector<unsigned> m_ast; // Active Style Table (unique values)
pod_vector<int8u> m_asm; // Active Style Mask
pod_vector<cell_info> m_cells;
pod_vector<cover_type> m_cover_buf;
int m_min_style;
int m_max_style;
coord_type m_start_x;
coord_type m_start_y;
int m_scan_y;
int m_sl_start;
unsigned m_sl_len;
};
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::reset()
{
m_outline.reset();
m_min_style = std::numeric_limits<int>::max();
m_max_style = std::numeric_limits<int>::min();
m_scan_y = std::numeric_limits<int>::max();
m_sl_start = 0;
m_sl_len = 0;
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::filling_rule(filling_rule_e filling_rule)
{
m_filling_rule = filling_rule;
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::layer_order(layer_order_e order)
{
m_layer_order = order;
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::clip_box(double x1, double y1,
double x2, double y2)
{
reset();
m_clipper.clip_box(conv_type::upscale(x1), conv_type::upscale(y1),
conv_type::upscale(x2), conv_type::upscale(y2));
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::reset_clipping()
{
reset();
m_clipper.reset_clipping();
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::styles(int left, int right)
{
cell_style_aa cell;
cell.initial();
cell.left = (int16)left;
cell.right = (int16)right;
m_outline.style(cell);
if(left >= 0 && left < m_min_style) m_min_style = left;
if(left >= 0 && left > m_max_style) m_max_style = left;
if(right >= 0 && right < m_min_style) m_min_style = right;
if(right >= 0 && right > m_max_style) m_max_style = right;
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::move_to(int x, int y)
{
if(m_outline.sorted()) reset();
m_clipper.move_to(m_start_x = conv_type::downscale(x),
m_start_y = conv_type::downscale(y));
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::line_to(int x, int y)
{
m_clipper.line_to(m_outline,
conv_type::downscale(x),
conv_type::downscale(y));
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::move_to_d(double x, double y)
{
if(m_outline.sorted()) reset();
m_clipper.move_to(m_start_x = conv_type::upscale(x),
m_start_y = conv_type::upscale(y));
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::line_to_d(double x, double y)
{
m_clipper.line_to(m_outline,
conv_type::upscale(x),
conv_type::upscale(y));
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::add_vertex(double x, double y, unsigned cmd)
{
if(is_move_to(cmd))
{
move_to_d(x, y);
}
else
if(is_vertex(cmd))
{
line_to_d(x, y);
}
else
if(is_close(cmd))
{
m_clipper.line_to(m_outline, m_start_x, m_start_y);
}
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::edge(int x1, int y1, int x2, int y2)
{
if(m_outline.sorted()) reset();
m_clipper.move_to(conv_type::downscale(x1), conv_type::downscale(y1));
m_clipper.line_to(m_outline,
conv_type::downscale(x2),
conv_type::downscale(y2));
}
//------------------------------------------------------------------------
template<class Clip>
void rasterizer_compound_aa<Clip>::edge_d(double x1, double y1,
double x2, double y2)
{
if(m_outline.sorted()) reset();
m_clipper.move_to(conv_type::upscale(x1), conv_type::upscale(y1));
m_clipper.line_to(m_outline,
conv_type::upscale(x2),
conv_type::upscale(y2));
}
//------------------------------------------------------------------------
template<class Clip>
AGG_INLINE void rasterizer_compound_aa<Clip>::sort()
{
m_outline.sort_cells();
}
//------------------------------------------------------------------------
template<class Clip>
AGG_INLINE bool rasterizer_compound_aa<Clip>::rewind_scanlines()
{
m_outline.sort_cells();
if(m_outline.total_cells() == 0)
{
return false;
}
if(m_max_style < m_min_style)
{
return false;
}
m_scan_y = m_outline.min_y();
m_styles.allocate(m_max_style - m_min_style + 2, 128);
return true;
}
//------------------------------------------------------------------------
template<class Clip>
AGG_INLINE void rasterizer_compound_aa<Clip>::add_style(int style_id)
{
if(style_id < 0) style_id = 0;
else style_id -= m_min_style - 1;
unsigned nbyte = style_id >> 3;
unsigned mask = 1 << (style_id & 7);
style_info* style = &m_styles[style_id];
if((m_asm[nbyte] & mask) == 0)
{
m_ast.add(style_id);
m_asm[nbyte] |= mask;
style->start_cell = 0;
style->num_cells = 0;
style->last_x = std::numeric_limits<int>::min();
}
++style->start_cell;
}
//------------------------------------------------------------------------
// Returns the number of styles
template<class Clip>
unsigned rasterizer_compound_aa<Clip>::sweep_styles()
{
for(;;)
{
if(m_scan_y > m_outline.max_y()) return 0;
unsigned num_cells = m_outline.scanline_num_cells(m_scan_y);
const cell_style_aa* const* cells = m_outline.scanline_cells(m_scan_y);
unsigned num_styles = m_max_style - m_min_style + 2;
const cell_style_aa* curr_cell;
unsigned style_id;
style_info* style;
cell_info* cell;
m_cells.allocate(num_cells * 2, 256); // Each cell can have two styles
m_ast.capacity(num_styles, 64);
m_asm.allocate((num_styles + 7) >> 3, 8);
m_asm.zero();
if(num_cells)
{
// Pre-add zero (for no-fill style, that is, -1).
// We need that to ensure that the "-1 style" would go first.
m_asm[0] |= 1;
m_ast.add(0);
style = &m_styles[0];
style->start_cell = 0;
style->num_cells = 0;
style->last_x = std::numeric_limits<int>::min();
m_sl_start = cells[0]->x;
m_sl_len = cells[num_cells-1]->x - m_sl_start + 1;
while(num_cells--)
{
curr_cell = *cells++;
add_style(curr_cell->left);
add_style(curr_cell->right);
}
// Convert the Y-histogram into the array of starting indexes
unsigned i;
unsigned start_cell = 0;
for(i = 0; i < m_ast.size(); i++)
{
style_info& st = m_styles[m_ast[i]];
unsigned v = st.start_cell;
st.start_cell = start_cell;
start_cell += v;
}
cells = m_outline.scanline_cells(m_scan_y);
num_cells = m_outline.scanline_num_cells(m_scan_y);
while(num_cells--)
{
curr_cell = *cells++;
style_id = (curr_cell->left < 0) ? 0 :
curr_cell->left - m_min_style + 1;
style = &m_styles[style_id];
if(curr_cell->x == style->last_x)
{
cell = &m_cells[style->start_cell + style->num_cells - 1];
cell->area += curr_cell->area;
cell->cover += curr_cell->cover;
}
else
{
cell = &m_cells[style->start_cell + style->num_cells];
cell->x = curr_cell->x;
cell->area = curr_cell->area;
cell->cover = curr_cell->cover;
style->last_x = curr_cell->x;
style->num_cells++;
}
style_id = (curr_cell->right < 0) ? 0 :
curr_cell->right - m_min_style + 1;
style = &m_styles[style_id];
if(curr_cell->x == style->last_x)
{
cell = &m_cells[style->start_cell + style->num_cells - 1];
cell->area -= curr_cell->area;
cell->cover -= curr_cell->cover;
}
else
{
cell = &m_cells[style->start_cell + style->num_cells];
cell->x = curr_cell->x;
cell->area = -curr_cell->area;
cell->cover = -curr_cell->cover;
style->last_x = curr_cell->x;
style->num_cells++;
}
}
}
if(m_ast.size() > 1) break;
++m_scan_y;
}
++m_scan_y;
if(m_layer_order != layer_unsorted)
{
range_adaptor<pod_vector<unsigned> > ra(m_ast, 1, m_ast.size() - 1);
if(m_layer_order == layer_direct) quick_sort(ra, unsigned_greater);
else quick_sort(ra, unsigned_less);
}
return m_ast.size() - 1;
}
//------------------------------------------------------------------------
// Returns style ID depending of the existing style index
template<class Clip>
AGG_INLINE
unsigned rasterizer_compound_aa<Clip>::style(unsigned style_idx) const
{
return m_ast[style_idx + 1] + m_min_style - 1;
}
//------------------------------------------------------------------------
template<class Clip>
AGG_INLINE bool rasterizer_compound_aa<Clip>::navigate_scanline(int y)
{
m_outline.sort_cells();
if(m_outline.total_cells() == 0)
{
return false;
}
if(m_max_style < m_min_style)
{
return false;
}
if(y < m_outline.min_y() || y > m_outline.max_y())
{
return false;
}
m_scan_y = y;
m_styles.allocate(m_max_style - m_min_style + 2, 128);
return true;
}
//------------------------------------------------------------------------
template<class Clip>
bool rasterizer_compound_aa<Clip>::hit_test(int tx, int ty)
{
if(!navigate_scanline(ty))
{
return false;
}
unsigned num_styles = sweep_styles();
if(num_styles <= 0)
{
return false;
}
scanline_hit_test sl(tx);
sweep_scanline(sl, -1);
return sl.hit();
}
//------------------------------------------------------------------------
template<class Clip>
cover_type* rasterizer_compound_aa<Clip>::allocate_cover_buffer(unsigned len)
{
m_cover_buf.allocate(len, 256);
return &m_cover_buf[0];
}
}
#endif

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xs/src/agg/agg_rasterizer_outline.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_RASTERIZER_OUTLINE_INCLUDED
#define AGG_RASTERIZER_OUTLINE_INCLUDED
#include "agg_basics.h"
namespace agg
{
//======================================================rasterizer_outline
template<class Renderer> class rasterizer_outline
{
public:
explicit rasterizer_outline(Renderer& ren) :
m_ren(&ren),
m_start_x(0),
m_start_y(0),
m_vertices(0)
{}
void attach(Renderer& ren) { m_ren = &ren; }
//--------------------------------------------------------------------
void move_to(int x, int y)
{
m_vertices = 1;
m_ren->move_to(m_start_x = x, m_start_y = y);
}
//--------------------------------------------------------------------
void line_to(int x, int y)
{
++m_vertices;
m_ren->line_to(x, y);
}
//--------------------------------------------------------------------
void move_to_d(double x, double y)
{
move_to(m_ren->coord(x), m_ren->coord(y));
}
//--------------------------------------------------------------------
void line_to_d(double x, double y)
{
line_to(m_ren->coord(x), m_ren->coord(y));
}
//--------------------------------------------------------------------
void close()
{
if(m_vertices > 2)
{
line_to(m_start_x, m_start_y);
}
m_vertices = 0;
}
//--------------------------------------------------------------------
void add_vertex(double x, double y, unsigned cmd)
{
if(is_move_to(cmd))
{
move_to_d(x, y);
}
else
{
if(is_end_poly(cmd))
{
if(is_closed(cmd)) close();
}
else
{
line_to_d(x, y);
}
}
}
//--------------------------------------------------------------------
template<class VertexSource>
void add_path(VertexSource& vs, unsigned path_id=0)
{
double x;
double y;
unsigned cmd;
vs.rewind(path_id);
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
add_vertex(x, y, cmd);
}
}
//--------------------------------------------------------------------
template<class VertexSource, class ColorStorage, class PathId>
void render_all_paths(VertexSource& vs,
const ColorStorage& colors,
const PathId& path_id,
unsigned num_paths)
{
for(unsigned i = 0; i < num_paths; i++)
{
m_ren->line_color(colors[i]);
add_path(vs, path_id[i]);
}
}
//--------------------------------------------------------------------
template<class Ctrl> void render_ctrl(Ctrl& c)
{
unsigned i;
for(i = 0; i < c.num_paths(); i++)
{
m_ren->line_color(c.color(i));
add_path(c, i);
}
}
private:
Renderer* m_ren;
int m_start_x;
int m_start_y;
unsigned m_vertices;
};
}
#endif

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xs/src/agg/agg_rasterizer_outline_aa.h
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@ -1,599 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_RASTERIZER_OUTLINE_AA_INCLUDED
#define AGG_RASTERIZER_OUTLINE_AA_INCLUDED
#include "agg_basics.h"
#include "agg_line_aa_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//-------------------------------------------------------------------------
inline bool cmp_dist_start(int d) { return d > 0; }
inline bool cmp_dist_end(int d) { return d <= 0; }
//-----------------------------------------------------------line_aa_vertex
// Vertex (x, y) with the distance to the next one. The last vertex has
// the distance between the last and the first points
struct line_aa_vertex
{
int x;
int y;
int len;
line_aa_vertex() {}
line_aa_vertex(int x_, int y_) :
x(x_),
y(y_),
len(0)
{
}
bool operator () (const line_aa_vertex& val)
{
double dx = val.x - x;
double dy = val.y - y;
return (len = uround(sqrt(dx * dx + dy * dy))) >
(line_subpixel_scale + line_subpixel_scale / 2);
}
};
//----------------------------------------------------------outline_aa_join_e
enum outline_aa_join_e
{
outline_no_join, //-----outline_no_join
outline_miter_join, //-----outline_miter_join
outline_round_join, //-----outline_round_join
outline_miter_accurate_join //-----outline_accurate_join
};
//=======================================================rasterizer_outline_aa
template<class Renderer, class Coord=line_coord> class rasterizer_outline_aa
{
private:
//------------------------------------------------------------------------
struct draw_vars
{
unsigned idx;
int x1, y1, x2, y2;
line_parameters curr, next;
int lcurr, lnext;
int xb1, yb1, xb2, yb2;
unsigned flags;
};
void draw(draw_vars& dv, unsigned start, unsigned end);
public:
typedef line_aa_vertex vertex_type;
typedef vertex_sequence<vertex_type, 6> vertex_storage_type;
explicit rasterizer_outline_aa(Renderer& ren) :
m_ren(&ren),
m_line_join(ren.accurate_join_only() ?
outline_miter_accurate_join :
outline_round_join),
m_round_cap(false),
m_start_x(0),
m_start_y(0)
{}
void attach(Renderer& ren) { m_ren = &ren; }
//------------------------------------------------------------------------
void line_join(outline_aa_join_e join)
{
m_line_join = m_ren->accurate_join_only() ?
outline_miter_accurate_join :
join;
}
bool line_join() const { return m_line_join; }
//------------------------------------------------------------------------
void round_cap(bool v) { m_round_cap = v; }
bool round_cap() const { return m_round_cap; }
//------------------------------------------------------------------------
void move_to(int x, int y)
{
m_src_vertices.modify_last(vertex_type(m_start_x = x, m_start_y = y));
}
//------------------------------------------------------------------------
void line_to(int x, int y)
{
m_src_vertices.add(vertex_type(x, y));
}
//------------------------------------------------------------------------
void move_to_d(double x, double y)
{
move_to(Coord::conv(x), Coord::conv(y));
}
//------------------------------------------------------------------------
void line_to_d(double x, double y)
{
line_to(Coord::conv(x), Coord::conv(y));
}
//------------------------------------------------------------------------
void render(bool close_polygon);
//------------------------------------------------------------------------
void add_vertex(double x, double y, unsigned cmd)
{
if(is_move_to(cmd))
{
render(false);
move_to_d(x, y);
}
else
{
if(is_end_poly(cmd))
{
render(is_closed(cmd));
if(is_closed(cmd))
{
move_to(m_start_x, m_start_y);
}
}
else
{
line_to_d(x, y);
}
}
}
//------------------------------------------------------------------------
template<class VertexSource>
void add_path(VertexSource& vs, unsigned path_id=0)
{
double x;
double y;
unsigned cmd;
vs.rewind(path_id);
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
add_vertex(x, y, cmd);
}
render(false);
}
//------------------------------------------------------------------------
template<class VertexSource, class ColorStorage, class PathId>
void render_all_paths(VertexSource& vs,
const ColorStorage& colors,
const PathId& path_id,
unsigned num_paths)
{
for(unsigned i = 0; i < num_paths; i++)
{
m_ren->color(colors[i]);
add_path(vs, path_id[i]);
}
}
//------------------------------------------------------------------------
template<class Ctrl> void render_ctrl(Ctrl& c)
{
unsigned i;
for(i = 0; i < c.num_paths(); i++)
{
m_ren->color(c.color(i));
add_path(c, i);
}
}
private:
rasterizer_outline_aa(const rasterizer_outline_aa<Renderer, Coord>&);
const rasterizer_outline_aa<Renderer, Coord>& operator =
(const rasterizer_outline_aa<Renderer, Coord>&);
Renderer* m_ren;
vertex_storage_type m_src_vertices;
outline_aa_join_e m_line_join;
bool m_round_cap;
int m_start_x;
int m_start_y;
};
//----------------------------------------------------------------------------
template<class Renderer, class Coord>
void rasterizer_outline_aa<Renderer, Coord>::draw(draw_vars& dv,
unsigned start,
unsigned end)
{
unsigned i;
const vertex_storage_type::value_type* v;
for(i = start; i < end; i++)
{
if(m_line_join == outline_round_join)
{
dv.xb1 = dv.curr.x1 + (dv.curr.y2 - dv.curr.y1);
dv.yb1 = dv.curr.y1 - (dv.curr.x2 - dv.curr.x1);
dv.xb2 = dv.curr.x2 + (dv.curr.y2 - dv.curr.y1);
dv.yb2 = dv.curr.y2 - (dv.curr.x2 - dv.curr.x1);
}
switch(dv.flags)
{
case 0: m_ren->line3(dv.curr, dv.xb1, dv.yb1, dv.xb2, dv.yb2); break;
case 1: m_ren->line2(dv.curr, dv.xb2, dv.yb2); break;
case 2: m_ren->line1(dv.curr, dv.xb1, dv.yb1); break;
case 3: m_ren->line0(dv.curr); break;
}
if(m_line_join == outline_round_join && (dv.flags & 2) == 0)
{
m_ren->pie(dv.curr.x2, dv.curr.y2,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1),
dv.curr.x2 + (dv.next.y2 - dv.next.y1),
dv.curr.y2 - (dv.next.x2 - dv.next.x1));
}
dv.x1 = dv.x2;
dv.y1 = dv.y2;
dv.lcurr = dv.lnext;
dv.lnext = m_src_vertices[dv.idx].len;
++dv.idx;
if(dv.idx >= m_src_vertices.size()) dv.idx = 0;
v = &m_src_vertices[dv.idx];
dv.x2 = v->x;
dv.y2 = v->y;
dv.curr = dv.next;
dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
dv.xb1 = dv.xb2;
dv.yb1 = dv.yb2;
switch(m_line_join)
{
case outline_no_join:
dv.flags = 3;
break;
case outline_miter_join:
dv.flags >>= 1;
dv.flags |= ((dv.curr.diagonal_quadrant() ==
dv.next.diagonal_quadrant()) << 1);
if((dv.flags & 2) == 0)
{
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
}
break;
case outline_round_join:
dv.flags >>= 1;
dv.flags |= ((dv.curr.diagonal_quadrant() ==
dv.next.diagonal_quadrant()) << 1);
break;
case outline_miter_accurate_join:
dv.flags = 0;
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
break;
}
}
}
//----------------------------------------------------------------------------
template<class Renderer, class Coord>
void rasterizer_outline_aa<Renderer, Coord>::render(bool close_polygon)
{
m_src_vertices.close(close_polygon);
draw_vars dv;
const vertex_storage_type::value_type* v;
int x1;
int y1;
int x2;
int y2;
int lprev;
if(close_polygon)
{
if(m_src_vertices.size() >= 3)
{
dv.idx = 2;
v = &m_src_vertices[m_src_vertices.size() - 1];
x1 = v->x;
y1 = v->y;
lprev = v->len;
v = &m_src_vertices[0];
x2 = v->x;
y2 = v->y;
dv.lcurr = v->len;
line_parameters prev(x1, y1, x2, y2, lprev);
v = &m_src_vertices[1];
dv.x1 = v->x;
dv.y1 = v->y;
dv.lnext = v->len;
dv.curr = line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr);
v = &m_src_vertices[dv.idx];
dv.x2 = v->x;
dv.y2 = v->y;
dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
dv.xb1 = 0;
dv.yb1 = 0;
dv.xb2 = 0;
dv.yb2 = 0;
switch(m_line_join)
{
case outline_no_join:
dv.flags = 3;
break;
case outline_miter_join:
case outline_round_join:
dv.flags =
(prev.diagonal_quadrant() == dv.curr.diagonal_quadrant()) |
((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant()) << 1);
break;
case outline_miter_accurate_join:
dv.flags = 0;
break;
}
if((dv.flags & 1) == 0 && m_line_join != outline_round_join)
{
bisectrix(prev, dv.curr, &dv.xb1, &dv.yb1);
}
if((dv.flags & 2) == 0 && m_line_join != outline_round_join)
{
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
}
draw(dv, 0, m_src_vertices.size());
}
}
else
{
switch(m_src_vertices.size())
{
case 0:
case 1:
break;
case 2:
{
v = &m_src_vertices[0];
x1 = v->x;
y1 = v->y;
lprev = v->len;
v = &m_src_vertices[1];
x2 = v->x;
y2 = v->y;
line_parameters lp(x1, y1, x2, y2, lprev);
if(m_round_cap)
{
m_ren->semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
m_ren->line3(lp,
x1 + (y2 - y1),
y1 - (x2 - x1),
x2 + (y2 - y1),
y2 - (x2 - x1));
if(m_round_cap)
{
m_ren->semidot(cmp_dist_end, x2, y2, x2 + (y2 - y1), y2 - (x2 - x1));
}
}
break;
case 3:
{
int x3, y3;
int lnext;
v = &m_src_vertices[0];
x1 = v->x;
y1 = v->y;
lprev = v->len;
v = &m_src_vertices[1];
x2 = v->x;
y2 = v->y;
lnext = v->len;
v = &m_src_vertices[2];
x3 = v->x;
y3 = v->y;
line_parameters lp1(x1, y1, x2, y2, lprev);
line_parameters lp2(x2, y2, x3, y3, lnext);
if(m_round_cap)
{
m_ren->semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
if(m_line_join == outline_round_join)
{
m_ren->line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
x2 + (y2 - y1), y2 - (x2 - x1));
m_ren->pie(x2, y2, x2 + (y2 - y1), y2 - (x2 - x1),
x2 + (y3 - y2), y2 - (x3 - x2));
m_ren->line3(lp2, x2 + (y3 - y2), y2 - (x3 - x2),
x3 + (y3 - y2), y3 - (x3 - x2));
}
else
{
bisectrix(lp1, lp2, &dv.xb1, &dv.yb1);
m_ren->line3(lp1, x1 + (y2 - y1), y1 - (x2 - x1),
dv.xb1, dv.yb1);
m_ren->line3(lp2, dv.xb1, dv.yb1,
x3 + (y3 - y2), y3 - (x3 - x2));
}
if(m_round_cap)
{
m_ren->semidot(cmp_dist_end, x3, y3, x3 + (y3 - y2), y3 - (x3 - x2));
}
}
break;
default:
{
dv.idx = 3;
v = &m_src_vertices[0];
x1 = v->x;
y1 = v->y;
lprev = v->len;
v = &m_src_vertices[1];
x2 = v->x;
y2 = v->y;
dv.lcurr = v->len;
line_parameters prev(x1, y1, x2, y2, lprev);
v = &m_src_vertices[2];
dv.x1 = v->x;
dv.y1 = v->y;
dv.lnext = v->len;
dv.curr = line_parameters(x2, y2, dv.x1, dv.y1, dv.lcurr);
v = &m_src_vertices[dv.idx];
dv.x2 = v->x;
dv.y2 = v->y;
dv.next = line_parameters(dv.x1, dv.y1, dv.x2, dv.y2, dv.lnext);
dv.xb1 = 0;
dv.yb1 = 0;
dv.xb2 = 0;
dv.yb2 = 0;
switch(m_line_join)
{
case outline_no_join:
dv.flags = 3;
break;
case outline_miter_join:
case outline_round_join:
dv.flags =
(prev.diagonal_quadrant() == dv.curr.diagonal_quadrant()) |
((dv.curr.diagonal_quadrant() == dv.next.diagonal_quadrant()) << 1);
break;
case outline_miter_accurate_join:
dv.flags = 0;
break;
}
if(m_round_cap)
{
m_ren->semidot(cmp_dist_start, x1, y1, x1 + (y2 - y1), y1 - (x2 - x1));
}
if((dv.flags & 1) == 0)
{
if(m_line_join == outline_round_join)
{
m_ren->line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
x2 + (y2 - y1), y2 - (x2 - x1));
m_ren->pie(prev.x2, prev.y2,
x2 + (y2 - y1), y2 - (x2 - x1),
dv.curr.x1 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y1 - (dv.curr.x2 - dv.curr.x1));
}
else
{
bisectrix(prev, dv.curr, &dv.xb1, &dv.yb1);
m_ren->line3(prev, x1 + (y2 - y1), y1 - (x2 - x1),
dv.xb1, dv.yb1);
}
}
else
{
m_ren->line1(prev,
x1 + (y2 - y1),
y1 - (x2 - x1));
}
if((dv.flags & 2) == 0 && m_line_join != outline_round_join)
{
bisectrix(dv.curr, dv.next, &dv.xb2, &dv.yb2);
}
draw(dv, 1, m_src_vertices.size() - 2);
if((dv.flags & 1) == 0)
{
if(m_line_join == outline_round_join)
{
m_ren->line3(dv.curr,
dv.curr.x1 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y1 - (dv.curr.x2 - dv.curr.x1),
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
else
{
m_ren->line3(dv.curr, dv.xb1, dv.yb1,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
}
else
{
m_ren->line2(dv.curr,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
if(m_round_cap)
{
m_ren->semidot(cmp_dist_end, dv.curr.x2, dv.curr.y2,
dv.curr.x2 + (dv.curr.y2 - dv.curr.y1),
dv.curr.y2 - (dv.curr.x2 - dv.curr.x1));
}
}
break;
}
}
m_src_vertices.remove_all();
}
}
#endif

711
xs/src/agg/agg_renderer_markers.h
View file

@ -1,711 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// class renderer_markers
//
//----------------------------------------------------------------------------
#ifndef AGG_RENDERER_MARKERS_INCLUDED
#define AGG_RENDERER_MARKERS_INCLUDED
#include "agg_basics.h"
#include "agg_renderer_primitives.h"
namespace agg
{
//---------------------------------------------------------------marker_e
enum marker_e
{
marker_square,
marker_diamond,
marker_circle,
marker_crossed_circle,
marker_semiellipse_left,
marker_semiellipse_right,
marker_semiellipse_up,
marker_semiellipse_down,
marker_triangle_left,
marker_triangle_right,
marker_triangle_up,
marker_triangle_down,
marker_four_rays,
marker_cross,
marker_x,
marker_dash,
marker_dot,
marker_pixel,
end_of_markers
};
//--------------------------------------------------------renderer_markers
template<class BaseRenderer> class renderer_markers :
public renderer_primitives<BaseRenderer>
{
public:
typedef renderer_primitives<BaseRenderer> base_type;
typedef BaseRenderer base_ren_type;
typedef typename base_ren_type::color_type color_type;
//--------------------------------------------------------------------
renderer_markers(base_ren_type& rbuf) :
base_type(rbuf)
{}
//--------------------------------------------------------------------
bool visible(int x, int y, int r) const
{
rect_i rc(x-r, y-r, x+y, y+r);
return rc.clip(base_type::ren().bounding_clip_box());
}
//--------------------------------------------------------------------
void square(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r) base_type::outlined_rectangle(x-r, y-r, x+r, y+r);
else base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
//--------------------------------------------------------------------
void diamond(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r;
int dx = 0;
do
{
base_type::ren().blend_pixel(x - dx, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dx, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dx, y - dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dx, y - dy, base_type::line_color(), cover_full);
if(dx)
{
base_type::ren().blend_hline(x-dx+1, y+dy, x+dx-1, base_type::fill_color(), cover_full);
base_type::ren().blend_hline(x-dx+1, y-dy, x+dx-1, base_type::fill_color(), cover_full);
}
++dy;
++dx;
}
while(dy <= 0);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void circle(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r) base_type::outlined_ellipse(x, y, r, r);
else base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
//--------------------------------------------------------------------
void crossed_circle(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
base_type::outlined_ellipse(x, y, r, r);
int r6 = r + (r >> 1);
if(r <= 2) r6++;
r >>= 1;
base_type::ren().blend_hline(x-r6, y, x-r, base_type::line_color(), cover_full);
base_type::ren().blend_hline(x+r, y, x+r6, base_type::line_color(), cover_full);
base_type::ren().blend_vline(x, y-r6, y-r, base_type::line_color(), cover_full);
base_type::ren().blend_vline(x, y+r, y+r6, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//------------------------------------------------------------------------
void semiellipse_left(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int r8 = r * 4 / 5;
int dy = -r;
int dx = 0;
ellipse_bresenham_interpolator ei(r * 3 / 5, r+r8);
do
{
dx += ei.dx();
dy += ei.dy();
base_type::ren().blend_pixel(x + dy, y + dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dy, y - dx, base_type::line_color(), cover_full);
if(ei.dy() && dx)
{
base_type::ren().blend_vline(x+dy, y-dx+1, y+dx-1, base_type::fill_color(), cover_full);
}
++ei;
}
while(dy < r8);
base_type::ren().blend_vline(x+dy, y-dx, y+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void semiellipse_right(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int r8 = r * 4 / 5;
int dy = -r;
int dx = 0;
ellipse_bresenham_interpolator ei(r * 3 / 5, r+r8);
do
{
dx += ei.dx();
dy += ei.dy();
base_type::ren().blend_pixel(x - dy, y + dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dy, y - dx, base_type::line_color(), cover_full);
if(ei.dy() && dx)
{
base_type::ren().blend_vline(x-dy, y-dx+1, y+dx-1, base_type::fill_color(), cover_full);
}
++ei;
}
while(dy < r8);
base_type::ren().blend_vline(x-dy, y-dx, y+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void semiellipse_up(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int r8 = r * 4 / 5;
int dy = -r;
int dx = 0;
ellipse_bresenham_interpolator ei(r * 3 / 5, r+r8);
do
{
dx += ei.dx();
dy += ei.dy();
base_type::ren().blend_pixel(x + dx, y - dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dx, y - dy, base_type::line_color(), cover_full);
if(ei.dy() && dx)
{
base_type::ren().blend_hline(x-dx+1, y-dy, x+dx-1, base_type::fill_color(), cover_full);
}
++ei;
}
while(dy < r8);
base_type::ren().blend_hline(x-dx, y-dy-1, x+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void semiellipse_down(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int r8 = r * 4 / 5;
int dy = -r;
int dx = 0;
ellipse_bresenham_interpolator ei(r * 3 / 5, r+r8);
do
{
dx += ei.dx();
dy += ei.dy();
base_type::ren().blend_pixel(x + dx, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dx, y + dy, base_type::line_color(), cover_full);
if(ei.dy() && dx)
{
base_type::ren().blend_hline(x-dx+1, y+dy, x+dx-1, base_type::fill_color(), cover_full);
}
++ei;
}
while(dy < r8);
base_type::ren().blend_hline(x-dx, y+dy+1, x+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void triangle_left(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r;
int dx = 0;
int flip = 0;
int r6 = r * 3 / 5;
do
{
base_type::ren().blend_pixel(x + dy, y - dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dy, y + dx, base_type::line_color(), cover_full);
if(dx)
{
base_type::ren().blend_vline(x+dy, y-dx+1, y+dx-1, base_type::fill_color(), cover_full);
}
++dy;
dx += flip;
flip ^= 1;
}
while(dy < r6);
base_type::ren().blend_vline(x+dy, y-dx, y+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void triangle_right(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r;
int dx = 0;
int flip = 0;
int r6 = r * 3 / 5;
do
{
base_type::ren().blend_pixel(x - dy, y - dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dy, y + dx, base_type::line_color(), cover_full);
if(dx)
{
base_type::ren().blend_vline(x-dy, y-dx+1, y+dx-1, base_type::fill_color(), cover_full);
}
++dy;
dx += flip;
flip ^= 1;
}
while(dy < r6);
base_type::ren().blend_vline(x-dy, y-dx, y+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void triangle_up(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r;
int dx = 0;
int flip = 0;
int r6 = r * 3 / 5;
do
{
base_type::ren().blend_pixel(x - dx, y - dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dx, y - dy, base_type::line_color(), cover_full);
if(dx)
{
base_type::ren().blend_hline(x-dx+1, y-dy, x+dx-1, base_type::fill_color(), cover_full);
}
++dy;
dx += flip;
flip ^= 1;
}
while(dy < r6);
base_type::ren().blend_hline(x-dx, y-dy, x+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void triangle_down(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r;
int dx = 0;
int flip = 0;
int r6 = r * 3 / 5;
do
{
base_type::ren().blend_pixel(x - dx, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dx, y + dy, base_type::line_color(), cover_full);
if(dx)
{
base_type::ren().blend_hline(x-dx+1, y+dy, x+dx-1, base_type::fill_color(), cover_full);
}
++dy;
dx += flip;
flip ^= 1;
}
while(dy < r6);
base_type::ren().blend_hline(x-dx, y+dy, x+dx, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void four_rays(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r;
int dx = 0;
int flip = 0;
int r3 = -(r / 3);
do
{
base_type::ren().blend_pixel(x - dx, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dx, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dx, y - dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dx, y - dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dy, y - dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dy, y + dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dy, y - dx, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dy, y + dx, base_type::line_color(), cover_full);
if(dx)
{
base_type::ren().blend_hline(x-dx+1, y+dy, x+dx-1, base_type::fill_color(), cover_full);
base_type::ren().blend_hline(x-dx+1, y-dy, x+dx-1, base_type::fill_color(), cover_full);
base_type::ren().blend_vline(x+dy, y-dx+1, y+dx-1, base_type::fill_color(), cover_full);
base_type::ren().blend_vline(x-dy, y-dx+1, y+dx-1, base_type::fill_color(), cover_full);
}
++dy;
dx += flip;
flip ^= 1;
}
while(dy <= r3);
base_type::solid_rectangle(x+r3+1, y+r3+1, x-r3-1, y-r3-1);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void cross(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
base_type::ren().blend_vline(x, y-r, y+r, base_type::line_color(), cover_full);
base_type::ren().blend_hline(x-r, y, x+r, base_type::line_color(), cover_full);
}
else
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
}
//--------------------------------------------------------------------
void xing(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r)
{
int dy = -r * 7 / 10;
do
{
base_type::ren().blend_pixel(x + dy, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dy, y + dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x + dy, y - dy, base_type::line_color(), cover_full);
base_type::ren().blend_pixel(x - dy, y - dy, base_type::line_color(), cover_full);
++dy;
}
while(dy < 0);
}
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
//--------------------------------------------------------------------
void dash(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r) base_type::ren().blend_hline(x-r, y, x+r, base_type::line_color(), cover_full);
else base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
//--------------------------------------------------------------------
void dot(int x, int y, int r)
{
if(visible(x, y, r))
{
if(r) base_type::solid_ellipse(x, y, r, r);
else base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
}
//--------------------------------------------------------------------
void pixel(int x, int y, int)
{
base_type::ren().blend_pixel(x, y, base_type::fill_color(), cover_full);
}
//--------------------------------------------------------------------
void marker(int x, int y, int r, marker_e type)
{
switch(type)
{
case marker_square: square(x, y, r); break;
case marker_diamond: diamond(x, y, r); break;
case marker_circle: circle(x, y, r); break;
case marker_crossed_circle: crossed_circle(x, y, r); break;
case marker_semiellipse_left: semiellipse_left(x, y, r); break;
case marker_semiellipse_right: semiellipse_right(x, y, r); break;
case marker_semiellipse_up: semiellipse_up(x, y, r); break;
case marker_semiellipse_down: semiellipse_down(x, y, r); break;
case marker_triangle_left: triangle_left(x, y, r); break;
case marker_triangle_right: triangle_right(x, y, r); break;
case marker_triangle_up: triangle_up(x, y, r); break;
case marker_triangle_down: triangle_down(x, y, r); break;
case marker_four_rays: four_rays(x, y, r); break;
case marker_cross: cross(x, y, r); break;
case marker_x: xing(x, y, r); break;
case marker_dash: dash(x, y, r); break;
case marker_dot: dot(x, y, r); break;
case marker_pixel: pixel(x, y, r); break;
case end_of_markers: break;
}
}
//--------------------------------------------------------------------
template<class T>
void markers(int n, const T* x, const T* y, T r, marker_e type)
{
if(n <= 0) return;
if(r == 0)
{
do
{
base_type::ren().blend_pixel(int(*x), int(*y), base_type::fill_color(), cover_full);
++x;
++y;
}
while(--n);
return;
}
switch(type)
{
case marker_square: do { square (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_diamond: do { diamond (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_circle: do { circle (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_crossed_circle: do { crossed_circle (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_semiellipse_left: do { semiellipse_left (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_semiellipse_right: do { semiellipse_right(int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_semiellipse_up: do { semiellipse_up (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_semiellipse_down: do { semiellipse_down (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_triangle_left: do { triangle_left (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_triangle_right: do { triangle_right (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_triangle_up: do { triangle_up (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_triangle_down: do { triangle_down (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_four_rays: do { four_rays (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_cross: do { cross (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_x: do { xing (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_dash: do { dash (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_dot: do { dot (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case marker_pixel: do { pixel (int(*x), int(*y), int(r)); ++x; ++y; } while(--n); break;
case end_of_markers: break;
}
}
//--------------------------------------------------------------------
template<class T>
void markers(int n, const T* x, const T* y, const T* r, marker_e type)
{
if(n <= 0) return;
switch(type)
{
case marker_square: do { square (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_diamond: do { diamond (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_circle: do { circle (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_crossed_circle: do { crossed_circle (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_semiellipse_left: do { semiellipse_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_semiellipse_right: do { semiellipse_right(int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_semiellipse_up: do { semiellipse_up (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_semiellipse_down: do { semiellipse_down (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_triangle_left: do { triangle_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_triangle_right: do { triangle_right (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_triangle_up: do { triangle_up (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_triangle_down: do { triangle_down (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_four_rays: do { four_rays (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_cross: do { cross (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_x: do { xing (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_dash: do { dash (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_dot: do { dot (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case marker_pixel: do { pixel (int(*x), int(*y), int(*r)); ++x; ++y; ++r; } while(--n); break;
case end_of_markers: break;
}
}
//--------------------------------------------------------------------
template<class T>
void markers(int n, const T* x, const T* y, const T* r, const color_type* fc, marker_e type)
{
if(n <= 0) return;
switch(type)
{
case marker_square: do { base_type::fill_color(*fc); square (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_diamond: do { base_type::fill_color(*fc); diamond (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_circle: do { base_type::fill_color(*fc); circle (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_crossed_circle: do { base_type::fill_color(*fc); crossed_circle (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_semiellipse_left: do { base_type::fill_color(*fc); semiellipse_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_semiellipse_right: do { base_type::fill_color(*fc); semiellipse_right(int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_semiellipse_up: do { base_type::fill_color(*fc); semiellipse_up (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_semiellipse_down: do { base_type::fill_color(*fc); semiellipse_down (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_triangle_left: do { base_type::fill_color(*fc); triangle_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_triangle_right: do { base_type::fill_color(*fc); triangle_right (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_triangle_up: do { base_type::fill_color(*fc); triangle_up (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_triangle_down: do { base_type::fill_color(*fc); triangle_down (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_four_rays: do { base_type::fill_color(*fc); four_rays (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_cross: do { base_type::fill_color(*fc); cross (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_x: do { base_type::fill_color(*fc); xing (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_dash: do { base_type::fill_color(*fc); dash (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_dot: do { base_type::fill_color(*fc); dot (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case marker_pixel: do { base_type::fill_color(*fc); pixel (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; } while(--n); break;
case end_of_markers: break;
}
}
//--------------------------------------------------------------------
template<class T>
void markers(int n, const T* x, const T* y, const T* r, const color_type* fc, const color_type* lc, marker_e type)
{
if(n <= 0) return;
switch(type)
{
case marker_square: do { base_type::fill_color(*fc); base_type::line_color(*lc); square (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_diamond: do { base_type::fill_color(*fc); base_type::line_color(*lc); diamond (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_circle: do { base_type::fill_color(*fc); base_type::line_color(*lc); circle (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_crossed_circle: do { base_type::fill_color(*fc); base_type::line_color(*lc); crossed_circle (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_semiellipse_left: do { base_type::fill_color(*fc); base_type::line_color(*lc); semiellipse_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_semiellipse_right: do { base_type::fill_color(*fc); base_type::line_color(*lc); semiellipse_right(int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_semiellipse_up: do { base_type::fill_color(*fc); base_type::line_color(*lc); semiellipse_up (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_semiellipse_down: do { base_type::fill_color(*fc); base_type::line_color(*lc); semiellipse_down (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_triangle_left: do { base_type::fill_color(*fc); base_type::line_color(*lc); triangle_left (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_triangle_right: do { base_type::fill_color(*fc); base_type::line_color(*lc); triangle_right (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_triangle_up: do { base_type::fill_color(*fc); base_type::line_color(*lc); triangle_up (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_triangle_down: do { base_type::fill_color(*fc); base_type::line_color(*lc); triangle_down (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_four_rays: do { base_type::fill_color(*fc); base_type::line_color(*lc); four_rays (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_cross: do { base_type::fill_color(*fc); base_type::line_color(*lc); cross (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_x: do { base_type::fill_color(*fc); base_type::line_color(*lc); xing (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_dash: do { base_type::fill_color(*fc); base_type::line_color(*lc); dash (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_dot: do { base_type::fill_color(*fc); base_type::line_color(*lc); dot (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case marker_pixel: do { base_type::fill_color(*fc); base_type::line_color(*lc); pixel (int(*x), int(*y), int(*r)); ++x; ++y; ++r; ++fc; ++lc; } while(--n); break;
case end_of_markers: break;
}
}
};
}
#endif

349
xs/src/agg/agg_renderer_mclip.h
View file

@ -1,349 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// class renderer_mclip
//
//----------------------------------------------------------------------------
#ifndef AGG_RENDERER_MCLIP_INCLUDED
#define AGG_RENDERER_MCLIP_INCLUDED
#include "agg_basics.h"
#include "agg_array.h"
#include "agg_renderer_base.h"
namespace agg
{
//----------------------------------------------------------renderer_mclip
template<class PixelFormat> class renderer_mclip
{
public:
typedef PixelFormat pixfmt_type;
typedef typename pixfmt_type::color_type color_type;
typedef typename pixfmt_type::row_data row_data;
typedef renderer_base<pixfmt_type> base_ren_type;
//--------------------------------------------------------------------
explicit renderer_mclip(pixfmt_type& pixf) :
m_ren(pixf),
m_curr_cb(0),
m_bounds(m_ren.xmin(), m_ren.ymin(), m_ren.xmax(), m_ren.ymax())
{}
void attach(pixfmt_type& pixf)
{
m_ren.attach(pixf);
reset_clipping(true);
}
//--------------------------------------------------------------------
const pixfmt_type& ren() const { return m_ren.ren(); }
pixfmt_type& ren() { return m_ren.ren(); }
//--------------------------------------------------------------------
unsigned width() const { return m_ren.width(); }
unsigned height() const { return m_ren.height(); }
//--------------------------------------------------------------------
const rect_i& clip_box() const { return m_ren.clip_box(); }
int xmin() const { return m_ren.xmin(); }
int ymin() const { return m_ren.ymin(); }
int xmax() const { return m_ren.xmax(); }
int ymax() const { return m_ren.ymax(); }
//--------------------------------------------------------------------
const rect_i& bounding_clip_box() const { return m_bounds; }
int bounding_xmin() const { return m_bounds.x1; }
int bounding_ymin() const { return m_bounds.y1; }
int bounding_xmax() const { return m_bounds.x2; }
int bounding_ymax() const { return m_bounds.y2; }
//--------------------------------------------------------------------
void first_clip_box()
{
m_curr_cb = 0;
if(m_clip.size())
{
const rect_i& cb = m_clip[0];
m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2);
}
}
//--------------------------------------------------------------------
bool next_clip_box()
{
if(++m_curr_cb < m_clip.size())
{
const rect_i& cb = m_clip[m_curr_cb];
m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2);
return true;
}
return false;
}
//--------------------------------------------------------------------
void reset_clipping(bool visibility)
{
m_ren.reset_clipping(visibility);
m_clip.remove_all();
m_curr_cb = 0;
m_bounds = m_ren.clip_box();
}
//--------------------------------------------------------------------
void add_clip_box(int x1, int y1, int x2, int y2)
{
rect_i cb(x1, y1, x2, y2);
cb.normalize();
if(cb.clip(rect_i(0, 0, width() - 1, height() - 1)))
{
m_clip.add(cb);
if(cb.x1 < m_bounds.x1) m_bounds.x1 = cb.x1;
if(cb.y1 < m_bounds.y1) m_bounds.y1 = cb.y1;
if(cb.x2 > m_bounds.x2) m_bounds.x2 = cb.x2;
if(cb.y2 > m_bounds.y2) m_bounds.y2 = cb.y2;
}
}
//--------------------------------------------------------------------
void clear(const color_type& c)
{
m_ren.clear(c);
}
//--------------------------------------------------------------------
void copy_pixel(int x, int y, const color_type& c)
{
first_clip_box();
do
{
if(m_ren.inbox(x, y))
{
m_ren.ren().copy_pixel(x, y, c);
break;
}
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_pixel(int x, int y, const color_type& c, cover_type cover)
{
first_clip_box();
do
{
if(m_ren.inbox(x, y))
{
m_ren.ren().blend_pixel(x, y, c, cover);
break;
}
}
while(next_clip_box());
}
//--------------------------------------------------------------------
color_type pixel(int x, int y) const
{
first_clip_box();
do
{
if(m_ren.inbox(x, y))
{
return m_ren.ren().pixel(x, y);
}
}
while(next_clip_box());
return color_type::no_color();
}
//--------------------------------------------------------------------
void copy_hline(int x1, int y, int x2, const color_type& c)
{
first_clip_box();
do
{
m_ren.copy_hline(x1, y, x2, c);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void copy_vline(int x, int y1, int y2, const color_type& c)
{
first_clip_box();
do
{
m_ren.copy_vline(x, y1, y2, c);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_hline(int x1, int y, int x2,
const color_type& c, cover_type cover)
{
first_clip_box();
do
{
m_ren.blend_hline(x1, y, x2, c, cover);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_vline(int x, int y1, int y2,
const color_type& c, cover_type cover)
{
first_clip_box();
do
{
m_ren.blend_vline(x, y1, y2, c, cover);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void copy_bar(int x1, int y1, int x2, int y2, const color_type& c)
{
first_clip_box();
do
{
m_ren.copy_bar(x1, y1, x2, y2, c);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_bar(int x1, int y1, int x2, int y2,
const color_type& c, cover_type cover)
{
first_clip_box();
do
{
m_ren.blend_bar(x1, y1, x2, y2, c, cover);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_solid_hspan(int x, int y, int len,
const color_type& c, const cover_type* covers)
{
first_clip_box();
do
{
m_ren.blend_solid_hspan(x, y, len, c, covers);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_solid_vspan(int x, int y, int len,
const color_type& c, const cover_type* covers)
{
first_clip_box();
do
{
m_ren.blend_solid_vspan(x, y, len, c, covers);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void copy_color_hspan(int x, int y, int len, const color_type* colors)
{
first_clip_box();
do
{
m_ren.copy_color_hspan(x, y, len, colors);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_color_hspan(int x, int y, int len,
const color_type* colors,
const cover_type* covers,
cover_type cover = cover_full)
{
first_clip_box();
do
{
m_ren.blend_color_hspan(x, y, len, colors, covers, cover);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void blend_color_vspan(int x, int y, int len,
const color_type* colors,
const cover_type* covers,
cover_type cover = cover_full)
{
first_clip_box();
do
{
m_ren.blend_color_vspan(x, y, len, colors, covers, cover);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
void copy_from(const rendering_buffer& from,
const rect_i* rc=0,
int x_to=0,
int y_to=0)
{
first_clip_box();
do
{
m_ren.copy_from(from, rc, x_to, y_to);
}
while(next_clip_box());
}
//--------------------------------------------------------------------
template<class SrcPixelFormatRenderer>
void blend_from(const SrcPixelFormatRenderer& src,
const rect_i* rect_src_ptr = 0,
int dx = 0,
int dy = 0,
cover_type cover = cover_full)
{
first_clip_box();
do
{
m_ren.blend_from(src, rect_src_ptr, dx, dy, cover);
}
while(next_clip_box());
}
private:
renderer_mclip(const renderer_mclip<PixelFormat>&);
const renderer_mclip<PixelFormat>&
operator = (const renderer_mclip<PixelFormat>&);
base_ren_type m_ren;
pod_bvector<rect_i, 4> m_clip;
unsigned m_curr_cb;
rect_i m_bounds;
};
}
#endif

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xs/src/agg/agg_renderer_outline_aa.h
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1036
xs/src/agg/agg_renderer_outline_image.h
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224
xs/src/agg/agg_renderer_primitives.h
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@ -1,224 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// class renderer_primitives
//
//----------------------------------------------------------------------------
#ifndef AGG_RENDERER_PRIMITIVES_INCLUDED
#define AGG_RENDERER_PRIMITIVES_INCLUDED
#include "agg_basics.h"
#include "agg_renderer_base.h"
#include "agg_dda_line.h"
#include "agg_ellipse_bresenham.h"
namespace agg
{
//-----------------------------------------------------renderer_primitives
template<class BaseRenderer> class renderer_primitives
{
public:
typedef BaseRenderer base_ren_type;
typedef typename base_ren_type::color_type color_type;
//--------------------------------------------------------------------
explicit renderer_primitives(base_ren_type& ren) :
m_ren(&ren),
m_fill_color(),
m_line_color(),
m_curr_x(0),
m_curr_y(0)
{}
void attach(base_ren_type& ren) { m_ren = &ren; }
//--------------------------------------------------------------------
static int coord(double c)
{
return iround(c * line_bresenham_interpolator::subpixel_scale);
}
//--------------------------------------------------------------------
void fill_color(const color_type& c) { m_fill_color = c; }
void line_color(const color_type& c) { m_line_color = c; }
const color_type& fill_color() const { return m_fill_color; }
const color_type& line_color() const { return m_line_color; }
//--------------------------------------------------------------------
void rectangle(int x1, int y1, int x2, int y2)
{
m_ren->blend_hline(x1, y1, x2-1, m_line_color, cover_full);
m_ren->blend_vline(x2, y1, y2-1, m_line_color, cover_full);
m_ren->blend_hline(x1+1, y2, x2, m_line_color, cover_full);
m_ren->blend_vline(x1, y1+1, y2, m_line_color, cover_full);
}
//--------------------------------------------------------------------
void solid_rectangle(int x1, int y1, int x2, int y2)
{
m_ren->blend_bar(x1, y1, x2, y2, m_fill_color, cover_full);
}
//--------------------------------------------------------------------
void outlined_rectangle(int x1, int y1, int x2, int y2)
{
rectangle(x1, y1, x2, y2);
m_ren->blend_bar(x1+1, y1+1, x2-1, y2-1, m_fill_color, cover_full);
}
//--------------------------------------------------------------------
void ellipse(int x, int y, int rx, int ry)
{
ellipse_bresenham_interpolator ei(rx, ry);
int dx = 0;
int dy = -ry;
do
{
dx += ei.dx();
dy += ei.dy();
m_ren->blend_pixel(x + dx, y + dy, m_line_color, cover_full);
m_ren->blend_pixel(x + dx, y - dy, m_line_color, cover_full);
m_ren->blend_pixel(x - dx, y - dy, m_line_color, cover_full);
m_ren->blend_pixel(x - dx, y + dy, m_line_color, cover_full);
++ei;
}
while(dy < 0);
}
//--------------------------------------------------------------------
void solid_ellipse(int x, int y, int rx, int ry)
{
ellipse_bresenham_interpolator ei(rx, ry);
int dx = 0;
int dy = -ry;
int dy0 = dy;
int dx0 = dx;
do
{
dx += ei.dx();
dy += ei.dy();
if(dy != dy0)
{
m_ren->blend_hline(x-dx0, y+dy0, x+dx0, m_fill_color, cover_full);
m_ren->blend_hline(x-dx0, y-dy0, x+dx0, m_fill_color, cover_full);
}
dx0 = dx;
dy0 = dy;
++ei;
}
while(dy < 0);
m_ren->blend_hline(x-dx0, y+dy0, x+dx0, m_fill_color, cover_full);
}
//--------------------------------------------------------------------
void outlined_ellipse(int x, int y, int rx, int ry)
{
ellipse_bresenham_interpolator ei(rx, ry);
int dx = 0;
int dy = -ry;
do
{
dx += ei.dx();
dy += ei.dy();
m_ren->blend_pixel(x + dx, y + dy, m_line_color, cover_full);
m_ren->blend_pixel(x + dx, y - dy, m_line_color, cover_full);
m_ren->blend_pixel(x - dx, y - dy, m_line_color, cover_full);
m_ren->blend_pixel(x - dx, y + dy, m_line_color, cover_full);
if(ei.dy() && dx)
{
m_ren->blend_hline(x-dx+1, y+dy, x+dx-1, m_fill_color, cover_full);
m_ren->blend_hline(x-dx+1, y-dy, x+dx-1, m_fill_color, cover_full);
}
++ei;
}
while(dy < 0);
}
//--------------------------------------------------------------------
void line(int x1, int y1, int x2, int y2, bool last=false)
{
line_bresenham_interpolator li(x1, y1, x2, y2);
unsigned len = li.len();
if(len == 0)
{
if(last)
{
m_ren->blend_pixel(li.line_lr(x1), li.line_lr(y1), m_line_color, cover_full);
}
return;
}
if(last) ++len;
if(li.is_ver())
{
do
{
m_ren->blend_pixel(li.x2(), li.y1(), m_line_color, cover_full);
li.vstep();
}
while(--len);
}
else
{
do
{
m_ren->blend_pixel(li.x1(), li.y2(), m_line_color, cover_full);
li.hstep();
}
while(--len);
}
}
//--------------------------------------------------------------------
void move_to(int x, int y)
{
m_curr_x = x;
m_curr_y = y;
}
//--------------------------------------------------------------------
void line_to(int x, int y, bool last=false)
{
line(m_curr_x, m_curr_y, x, y, last);
m_curr_x = x;
m_curr_y = y;
}
//--------------------------------------------------------------------
const base_ren_type& ren() const { return *m_ren; }
base_ren_type& ren() { return *m_ren; }
//--------------------------------------------------------------------
const rendering_buffer& rbuf() const { return m_ren->rbuf(); }
rendering_buffer& rbuf() { return m_ren->rbuf(); }
private:
base_ren_type* m_ren;
color_type m_fill_color;
color_type m_line_color;
int m_curr_x;
int m_curr_y;
};
}
#endif

264
xs/src/agg/agg_renderer_raster_text.h
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@ -1,264 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_RENDERER_RASTER_TEXT_INCLUDED
#define AGG_RENDERER_RASTER_TEXT_INCLUDED
#include "agg_basics.h"
namespace agg
{
//==============================================renderer_raster_htext_solid
template<class BaseRenderer, class GlyphGenerator>
class renderer_raster_htext_solid
{
public:
typedef BaseRenderer ren_type;
typedef GlyphGenerator glyph_gen_type;
typedef typename glyph_gen_type::glyph_rect glyph_rect;
typedef typename ren_type::color_type color_type;
renderer_raster_htext_solid(ren_type& ren, glyph_gen_type& glyph) :
m_ren(&ren),
m_glyph(&glyph)
{}
void attach(ren_type& ren) { m_ren = &ren; }
//--------------------------------------------------------------------
void color(const color_type& c) { m_color = c; }
const color_type& color() const { return m_color; }
//--------------------------------------------------------------------
template<class CharT>
void render_text(double x, double y, const CharT* str, bool flip=false)
{
glyph_rect r;
while(*str)
{
m_glyph->prepare(&r, x, y, *str, flip);
if(r.x2 >= r.x1)
{
int i;
if(flip)
{
for(i = r.y1; i <= r.y2; i++)
{
m_ren->blend_solid_hspan(r.x1, i, (r.x2 - r.x1 + 1),
m_color,
m_glyph->span(r.y2 - i));
}
}
else
{
for(i = r.y1; i <= r.y2; i++)
{
m_ren->blend_solid_hspan(r.x1, i, (r.x2 - r.x1 + 1),
m_color,
m_glyph->span(i - r.y1));
}
}
}
x += r.dx;
y += r.dy;
++str;
}
}
private:
ren_type* m_ren;
glyph_gen_type* m_glyph;
color_type m_color;
};
//=============================================renderer_raster_vtext_solid
template<class BaseRenderer, class GlyphGenerator>
class renderer_raster_vtext_solid
{
public:
typedef BaseRenderer ren_type;
typedef GlyphGenerator glyph_gen_type;
typedef typename glyph_gen_type::glyph_rect glyph_rect;
typedef typename ren_type::color_type color_type;
renderer_raster_vtext_solid(ren_type& ren, glyph_gen_type& glyph) :
m_ren(&ren),
m_glyph(&glyph)
{
}
//--------------------------------------------------------------------
void color(const color_type& c) { m_color = c; }
const color_type& color() const { return m_color; }
//--------------------------------------------------------------------
template<class CharT>
void render_text(double x, double y, const CharT* str, bool flip=false)
{
glyph_rect r;
while(*str)
{
m_glyph->prepare(&r, x, y, *str, !flip);
if(r.x2 >= r.x1)
{
int i;
if(flip)
{
for(i = r.y1; i <= r.y2; i++)
{
m_ren->blend_solid_vspan(i, r.x1, (r.x2 - r.x1 + 1),
m_color,
m_glyph->span(i - r.y1));
}
}
else
{
for(i = r.y1; i <= r.y2; i++)
{
m_ren->blend_solid_vspan(i, r.x1, (r.x2 - r.x1 + 1),
m_color,
m_glyph->span(r.y2 - i));
}
}
}
x += r.dx;
y += r.dy;
++str;
}
}
private:
ren_type* m_ren;
glyph_gen_type* m_glyph;
color_type m_color;
};
//===================================================renderer_raster_htext
template<class ScanlineRenderer, class GlyphGenerator>
class renderer_raster_htext
{
public:
typedef ScanlineRenderer ren_type;
typedef GlyphGenerator glyph_gen_type;
typedef typename glyph_gen_type::glyph_rect glyph_rect;
class scanline_single_span
{
public:
typedef agg::cover_type cover_type;
//----------------------------------------------------------------
struct const_span
{
int x;
unsigned len;
const cover_type* covers;
const_span() {}
const_span(int x_, unsigned len_, const cover_type* covers_) :
x(x_), len(len_), covers(covers_)
{}
};
typedef const const_span* const_iterator;
//----------------------------------------------------------------
scanline_single_span(int x, int y, unsigned len,
const cover_type* covers) :
m_y(y),
m_span(x, len, covers)
{}
//----------------------------------------------------------------
int y() const { return m_y; }
unsigned num_spans() const { return 1; }
const_iterator begin() const { return &m_span; }
private:
//----------------------------------------------------------------
int m_y;
const_span m_span;
};
//--------------------------------------------------------------------
renderer_raster_htext(ren_type& ren, glyph_gen_type& glyph) :
m_ren(&ren),
m_glyph(&glyph)
{
}
//--------------------------------------------------------------------
template<class CharT>
void render_text(double x, double y, const CharT* str, bool flip=false)
{
glyph_rect r;
while(*str)
{
m_glyph->prepare(&r, x, y, *str, flip);
if(r.x2 >= r.x1)
{
m_ren->prepare();
int i;
if(flip)
{
for(i = r.y1; i <= r.y2; i++)
{
m_ren->render(
scanline_single_span(r.x1,
i,
(r.x2 - r.x1 + 1),
m_glyph->span(r.y2 - i)));
}
}
else
{
for(i = r.y1; i <= r.y2; i++)
{
m_ren->render(
scanline_single_span(r.x1,
i,
(r.x2 - r.x1 + 1),
m_glyph->span(i - r.y1)));
}
}
}
x += r.dx;
y += r.dy;
++str;
}
}
private:
ren_type* m_ren;
glyph_gen_type* m_glyph;
};
}
#endif

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xs/src/agg/agg_rendering_buffer_dynarow.h
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@ -1,137 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// class rendering_buffer_dynarow
//
//----------------------------------------------------------------------------
#ifndef AGG_RENDERING_BUFFER_DYNAROW_INCLUDED
#define AGG_RENDERING_BUFFER_DYNAROW_INCLUDED
#include "agg_array.h"
namespace agg
{
//===============================================rendering_buffer_dynarow
// Rendering buffer class with dynamic allocation of the rows.
// The rows are allocated as needed when requesting for span_ptr().
// The class automatically calculates min_x and max_x for each row.
// Generally it's more efficient to use this class as a temporary buffer
// for rendering a few lines and then to blend it with another buffer.
//
class rendering_buffer_dynarow
{
public:
typedef row_info<int8u> row_data;
//-------------------------------------------------------------------
~rendering_buffer_dynarow()
{
init(0,0,0);
}
//-------------------------------------------------------------------
rendering_buffer_dynarow() :
m_rows(),
m_width(0),
m_height(0),
m_byte_width(0)
{
}
// Allocate and clear the buffer
//--------------------------------------------------------------------
rendering_buffer_dynarow(unsigned width, unsigned height,
unsigned byte_width) :
m_rows(height),
m_width(width),
m_height(height),
m_byte_width(byte_width)
{
memset(&m_rows[0], 0, sizeof(row_data) * height);
}
// Allocate and clear the buffer
//--------------------------------------------------------------------
void init(unsigned width, unsigned height, unsigned byte_width)
{
unsigned i;
for(i = 0; i < m_height; ++i)
{
pod_allocator<int8u>::deallocate((int8u*)m_rows[i].ptr, m_byte_width);
}
if(width && height)
{
m_width = width;
m_height = height;
m_byte_width = byte_width;
m_rows.resize(height);
memset(&m_rows[0], 0, sizeof(row_data) * height);
}
}
//--------------------------------------------------------------------
unsigned width() const { return m_width; }
unsigned height() const { return m_height; }
unsigned byte_width() const { return m_byte_width; }
// The main function used for rendering. Returns pointer to the
// pre-allocated span. Memory for the row is allocated as needed.
//--------------------------------------------------------------------
int8u* row_ptr(int x, int y, unsigned len)
{
row_data* r = &m_rows[y];
int x2 = x + len - 1;
if(r->ptr)
{
if(x < r->x1) { r->x1 = x; }
if(x2 > r->x2) { r->x2 = x2; }
}
else
{
int8u* p = pod_allocator<int8u>::allocate(m_byte_width);
r->ptr = p;
r->x1 = x;
r->x2 = x2;
memset(p, 0, m_byte_width);
}
return (int8u*)r->ptr;
}
//--------------------------------------------------------------------
const int8u* row_ptr(int y) const { return m_rows[y].ptr; }
int8u* row_ptr(int y) { return row_ptr(0, y, m_width); }
row_data row (int y) const { return m_rows[y]; }
private:
//--------------------------------------------------------------------
// Prohibit copying
rendering_buffer_dynarow(const rendering_buffer_dynarow&);
const rendering_buffer_dynarow& operator = (const rendering_buffer_dynarow&);
private:
//--------------------------------------------------------------------
pod_array<row_data> m_rows; // Pointers to each row of the buffer
unsigned m_width; // Width in pixels
unsigned m_height; // Height in pixels
unsigned m_byte_width; // Width in bytes
};
}
#endif

72
xs/src/agg/agg_rounded_rect.h
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@ -1,72 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Rounded rectangle vertex generator
//
//----------------------------------------------------------------------------
#ifndef AGG_ROUNDED_RECT_INCLUDED
#define AGG_ROUNDED_RECT_INCLUDED
#include "agg_basics.h"
#include "agg_arc.h"
namespace agg
{
//------------------------------------------------------------rounded_rect
//
// See Implemantation agg_rounded_rect.cpp
//
class rounded_rect
{
public:
rounded_rect() {}
rounded_rect(double x1, double y1, double x2, double y2, double r);
void rect(double x1, double y1, double x2, double y2);
void radius(double r);
void radius(double rx, double ry);
void radius(double rx_bottom, double ry_bottom, double rx_top, double ry_top);
void radius(double rx1, double ry1, double rx2, double ry2,
double rx3, double ry3, double rx4, double ry4);
void normalize_radius();
void approximation_scale(double s) { m_arc.approximation_scale(s); }
double approximation_scale() const { return m_arc.approximation_scale(); }
void rewind(unsigned);
unsigned vertex(double* x, double* y);
private:
double m_x1;
double m_y1;
double m_x2;
double m_y2;
double m_rx1;
double m_ry1;
double m_rx2;
double m_ry2;
double m_rx3;
double m_ry3;
double m_rx4;
double m_ry4;
unsigned m_status;
arc m_arc;
};
}
#endif

264
xs/src/agg/agg_scanline_bin.h
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@ -1,264 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Class scanline_bin - binary scanline.
//
//----------------------------------------------------------------------------
//
// Adaptation for 32-bit screen coordinates (scanline32_bin) has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SCANLINE_BIN_INCLUDED
#define AGG_SCANLINE_BIN_INCLUDED
#include "agg_array.h"
namespace agg
{
//=============================================================scanline_bin
//
// This is binary scaline container which supports the interface
// used in the rasterizer::render(). See description of agg_scanline_u8
// for details.
//
//------------------------------------------------------------------------
class scanline_bin
{
public:
typedef int32 coord_type;
struct span
{
int16 x;
int16 len;
};
typedef const span* const_iterator;
//--------------------------------------------------------------------
scanline_bin() :
m_last_x(0x7FFFFFF0),
m_spans(),
m_cur_span(0)
{
}
//--------------------------------------------------------------------
void reset(int min_x, int max_x)
{
unsigned max_len = max_x - min_x + 3;
if(max_len > m_spans.size())
{
m_spans.resize(max_len);
}
m_last_x = 0x7FFFFFF0;
m_cur_span = &m_spans[0];
}
//--------------------------------------------------------------------
void add_cell(int x, unsigned)
{
if(x == m_last_x+1)
{
m_cur_span->len++;
}
else
{
++m_cur_span;
m_cur_span->x = (int16)x;
m_cur_span->len = 1;
}
m_last_x = x;
}
//--------------------------------------------------------------------
void add_span(int x, unsigned len, unsigned)
{
if(x == m_last_x+1)
{
m_cur_span->len = (int16)(m_cur_span->len + len);
}
else
{
++m_cur_span;
m_cur_span->x = (int16)x;
m_cur_span->len = (int16)len;
}
m_last_x = x + len - 1;
}
//--------------------------------------------------------------------
void add_cells(int x, unsigned len, const void*)
{
add_span(x, len, 0);
}
//--------------------------------------------------------------------
void finalize(int y)
{
m_y = y;
}
//--------------------------------------------------------------------
void reset_spans()
{
m_last_x = 0x7FFFFFF0;
m_cur_span = &m_spans[0];
}
//--------------------------------------------------------------------
int y() const { return m_y; }
unsigned num_spans() const { return unsigned(m_cur_span - &m_spans[0]); }
const_iterator begin() const { return &m_spans[1]; }
private:
scanline_bin(const scanline_bin&);
const scanline_bin operator = (const scanline_bin&);
int m_last_x;
int m_y;
pod_array<span> m_spans;
span* m_cur_span;
};
//===========================================================scanline32_bin
class scanline32_bin
{
public:
typedef int32 coord_type;
//--------------------------------------------------------------------
struct span
{
span() {}
span(coord_type x_, coord_type len_) : x(x_), len(len_) {}
coord_type x;
coord_type len;
};
typedef pod_bvector<span, 4> span_array_type;
//--------------------------------------------------------------------
class const_iterator
{
public:
const_iterator(const span_array_type& spans) :
m_spans(spans),
m_span_idx(0)
{}
const span& operator*() const { return m_spans[m_span_idx]; }
const span* operator->() const { return &m_spans[m_span_idx]; }
void operator ++ () { ++m_span_idx; }
private:
const span_array_type& m_spans;
unsigned m_span_idx;
};
//--------------------------------------------------------------------
scanline32_bin() : m_max_len(0), m_last_x(0x7FFFFFF0) {}
//--------------------------------------------------------------------
void reset(int, int)
{
m_last_x = 0x7FFFFFF0;
m_spans.remove_all();
}
//--------------------------------------------------------------------
void add_cell(int x, unsigned)
{
if(x == m_last_x+1)
{
m_spans.last().len++;
}
else
{
m_spans.add(span(coord_type(x), 1));
}
m_last_x = x;
}
//--------------------------------------------------------------------
void add_span(int x, unsigned len, unsigned)
{
if(x == m_last_x+1)
{
m_spans.last().len += coord_type(len);
}
else
{
m_spans.add(span(coord_type(x), coord_type(len)));
}
m_last_x = x + len - 1;
}
//--------------------------------------------------------------------
void add_cells(int x, unsigned len, const void*)
{
add_span(x, len, 0);
}
//--------------------------------------------------------------------
void finalize(int y)
{
m_y = y;
}
//--------------------------------------------------------------------
void reset_spans()
{
m_last_x = 0x7FFFFFF0;
m_spans.remove_all();
}
//--------------------------------------------------------------------
int y() const { return m_y; }
unsigned num_spans() const { return m_spans.size(); }
const_iterator begin() const { return const_iterator(m_spans); }
private:
scanline32_bin(const scanline32_bin&);
const scanline32_bin operator = (const scanline32_bin&);
unsigned m_max_len;
int m_last_x;
int m_y;
span_array_type m_spans;
};
}
#endif

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xs/src/agg/agg_scanline_boolean_algebra.h
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xs/src/agg/agg_scanline_storage_aa.h
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@ -1,816 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for 32-bit screen coordinates has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SCANLINE_STORAGE_AA_INCLUDED
#define AGG_SCANLINE_STORAGE_AA_INCLUDED
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <limits>
#include "agg_array.h"
namespace agg
{
//----------------------------------------------scanline_cell_storage
template<class T> class scanline_cell_storage
{
struct extra_span
{
unsigned len;
T* ptr;
};
public:
typedef T value_type;
//---------------------------------------------------------------
~scanline_cell_storage()
{
remove_all();
}
//---------------------------------------------------------------
scanline_cell_storage() :
m_cells(128-2),
m_extra_storage()
{}
// Copying
//---------------------------------------------------------------
scanline_cell_storage(const scanline_cell_storage<T>& v) :
m_cells(v.m_cells),
m_extra_storage()
{
copy_extra_storage(v);
}
//---------------------------------------------------------------
const scanline_cell_storage<T>&
operator = (const scanline_cell_storage<T>& v)
{
remove_all();
m_cells = v.m_cells;
copy_extra_storage(v);
return *this;
}
//---------------------------------------------------------------
void remove_all()
{
int i;
for(i = m_extra_storage.size()-1; i >= 0; --i)
{
pod_allocator<T>::deallocate(m_extra_storage[i].ptr,
m_extra_storage[i].len);
}
m_extra_storage.remove_all();
m_cells.remove_all();
}
//---------------------------------------------------------------
int add_cells(const T* cells, unsigned num_cells)
{
int idx = m_cells.allocate_continuous_block(num_cells);
if(idx >= 0)
{
T* ptr = &m_cells[idx];
memcpy(ptr, cells, sizeof(T) * num_cells);
return idx;
}
extra_span s;
s.len = num_cells;
s.ptr = pod_allocator<T>::allocate(num_cells);
memcpy(s.ptr, cells, sizeof(T) * num_cells);
m_extra_storage.add(s);
return -int(m_extra_storage.size());
}
//---------------------------------------------------------------
const T* operator [] (int idx) const
{
if(idx >= 0)
{
if((unsigned)idx >= m_cells.size()) return 0;
return &m_cells[(unsigned)idx];
}
unsigned i = unsigned(-idx - 1);
if(i >= m_extra_storage.size()) return 0;
return m_extra_storage[i].ptr;
}
//---------------------------------------------------------------
T* operator [] (int idx)
{
if(idx >= 0)
{
if((unsigned)idx >= m_cells.size()) return 0;
return &m_cells[(unsigned)idx];
}
unsigned i = unsigned(-idx - 1);
if(i >= m_extra_storage.size()) return 0;
return m_extra_storage[i].ptr;
}
private:
void copy_extra_storage(const scanline_cell_storage<T>& v)
{
unsigned i;
for(i = 0; i < v.m_extra_storage.size(); ++i)
{
const extra_span& src = v.m_extra_storage[i];
extra_span dst;
dst.len = src.len;
dst.ptr = pod_allocator<T>::allocate(dst.len);
memcpy(dst.ptr, src.ptr, dst.len * sizeof(T));
m_extra_storage.add(dst);
}
}
pod_bvector<T, 12> m_cells;
pod_bvector<extra_span, 6> m_extra_storage;
};
//-----------------------------------------------scanline_storage_aa
template<class T> class scanline_storage_aa
{
public:
typedef T cover_type;
//---------------------------------------------------------------
struct span_data
{
int32 x;
int32 len; // If negative, it's a solid span, covers is valid
int covers_id; // The index of the cells in the scanline_cell_storage
};
//---------------------------------------------------------------
struct scanline_data
{
int y;
unsigned num_spans;
unsigned start_span;
};
//---------------------------------------------------------------
class embedded_scanline
{
public:
//-----------------------------------------------------------
class const_iterator
{
public:
struct span
{
int32 x;
int32 len; // If negative, it's a solid span, covers is valid
const T* covers;
};
const_iterator() : m_storage(0) {}
const_iterator(embedded_scanline& sl) :
m_storage(sl.m_storage),
m_span_idx(sl.m_scanline.start_span)
{
init_span();
}
const span& operator*() const { return m_span; }
const span* operator->() const { return &m_span; }
void operator ++ ()
{
++m_span_idx;
init_span();
}
private:
void init_span()
{
const span_data& s = m_storage->span_by_index(m_span_idx);
m_span.x = s.x;
m_span.len = s.len;
m_span.covers = m_storage->covers_by_index(s.covers_id);
}
scanline_storage_aa* m_storage;
unsigned m_span_idx;
span m_span;
};
friend class const_iterator;
//-----------------------------------------------------------
embedded_scanline(const scanline_storage_aa& storage) :
m_storage(&storage)
{
init(0);
}
//-----------------------------------------------------------
void reset(int, int) {}
unsigned num_spans() const { return m_scanline.num_spans; }
int y() const { return m_scanline.y; }
const_iterator begin() const { return const_iterator(*this); }
//-----------------------------------------------------------
void init(unsigned scanline_idx)
{
m_scanline_idx = scanline_idx;
m_scanline = m_storage->scanline_by_index(m_scanline_idx);
}
private:
const scanline_storage_aa* m_storage;
scanline_data m_scanline;
unsigned m_scanline_idx;
};
//---------------------------------------------------------------
scanline_storage_aa() :
m_covers(),
m_spans(256-2), // Block increment size
m_scanlines(),
m_min_x(std::numeric_limits<int>::max()),
m_min_y(std::numeric_limits<int>::max()),
m_max_x(std::numeric_limits<int>::min()),
m_max_y(std::numeric_limits<int>::min()),
m_cur_scanline(0)
{
m_fake_scanline.y = 0;
m_fake_scanline.num_spans = 0;
m_fake_scanline.start_span = 0;
m_fake_span.x = 0;
m_fake_span.len = 0;
m_fake_span.covers_id = 0;
}
// Renderer Interface
//---------------------------------------------------------------
void prepare()
{
m_covers.remove_all();
m_scanlines.remove_all();
m_spans.remove_all();
m_min_x = std::numeric_limits<int>::max();
m_min_y = std::numeric_limits<int>::max();
m_max_x = std::numeric_limits<int>::min();
m_max_y = std::numeric_limits<int>::min();
m_cur_scanline = 0;
}
//---------------------------------------------------------------
template<class Scanline> void render(const Scanline& sl)
{
scanline_data sl_this;
int y = sl.y();
if(y < m_min_y) m_min_y = y;
if(y > m_max_y) m_max_y = y;
sl_this.y = y;
sl_this.num_spans = sl.num_spans();
sl_this.start_span = m_spans.size();
typename Scanline::const_iterator span_iterator = sl.begin();
unsigned num_spans = sl_this.num_spans;
for(;;)
{
span_data sp;
sp.x = span_iterator->x;
sp.len = span_iterator->len;
int len = abs(int(sp.len));
sp.covers_id =
m_covers.add_cells(span_iterator->covers,
unsigned(len));
m_spans.add(sp);
int x1 = sp.x;
int x2 = sp.x + len - 1;
if(x1 < m_min_x) m_min_x = x1;
if(x2 > m_max_x) m_max_x = x2;
if(--num_spans == 0) break;
++span_iterator;
}
m_scanlines.add(sl_this);
}
//---------------------------------------------------------------
// Iterate scanlines interface
int min_x() const { return m_min_x; }
int min_y() const { return m_min_y; }
int max_x() const { return m_max_x; }
int max_y() const { return m_max_y; }
//---------------------------------------------------------------
bool rewind_scanlines()
{
m_cur_scanline = 0;
return m_scanlines.size() > 0;
}
//---------------------------------------------------------------
template<class Scanline> bool sweep_scanline(Scanline& sl)
{
sl.reset_spans();
for(;;)
{
if(m_cur_scanline >= m_scanlines.size()) return false;
const scanline_data& sl_this = m_scanlines[m_cur_scanline];
unsigned num_spans = sl_this.num_spans;
unsigned span_idx = sl_this.start_span;
do
{
const span_data& sp = m_spans[span_idx++];
const T* covers = covers_by_index(sp.covers_id);
if(sp.len < 0)
{
sl.add_span(sp.x, unsigned(-sp.len), *covers);
}
else
{
sl.add_cells(sp.x, sp.len, covers);
}
}
while(--num_spans);
++m_cur_scanline;
if(sl.num_spans())
{
sl.finalize(sl_this.y);
break;
}
}
return true;
}
//---------------------------------------------------------------
// Specialization for embedded_scanline
bool sweep_scanline(embedded_scanline& sl)
{
do
{
if(m_cur_scanline >= m_scanlines.size()) return false;
sl.init(m_cur_scanline);
++m_cur_scanline;
}
while(sl.num_spans() == 0);
return true;
}
//---------------------------------------------------------------
unsigned byte_size() const
{
unsigned i;
unsigned size = sizeof(int32) * 4; // min_x, min_y, max_x, max_y
for(i = 0; i < m_scanlines.size(); ++i)
{
size += sizeof(int32) * 3; // scanline size in bytes, Y, num_spans
const scanline_data& sl_this = m_scanlines[i];
unsigned num_spans = sl_this.num_spans;
unsigned span_idx = sl_this.start_span;
do
{
const span_data& sp = m_spans[span_idx++];
size += sizeof(int32) * 2; // X, span_len
if(sp.len < 0)
{
size += sizeof(T); // cover
}
else
{
size += sizeof(T) * unsigned(sp.len); // covers
}
}
while(--num_spans);
}
return size;
}
//---------------------------------------------------------------
static void write_int32(int8u* dst, int32 val)
{
dst[0] = ((const int8u*)&val)[0];
dst[1] = ((const int8u*)&val)[1];
dst[2] = ((const int8u*)&val)[2];
dst[3] = ((const int8u*)&val)[3];
}
//---------------------------------------------------------------
void serialize(int8u* data) const
{
unsigned i;
write_int32(data, min_x()); // min_x
data += sizeof(int32);
write_int32(data, min_y()); // min_y
data += sizeof(int32);
write_int32(data, max_x()); // max_x
data += sizeof(int32);
write_int32(data, max_y()); // max_y
data += sizeof(int32);
for(i = 0; i < m_scanlines.size(); ++i)
{
const scanline_data& sl_this = m_scanlines[i];
int8u* size_ptr = data;
data += sizeof(int32); // Reserve space for scanline size in bytes
write_int32(data, sl_this.y); // Y
data += sizeof(int32);
write_int32(data, sl_this.num_spans); // num_spans
data += sizeof(int32);
unsigned num_spans = sl_this.num_spans;
unsigned span_idx = sl_this.start_span;
do
{
const span_data& sp = m_spans[span_idx++];
const T* covers = covers_by_index(sp.covers_id);
write_int32(data, sp.x); // X
data += sizeof(int32);
write_int32(data, sp.len); // span_len
data += sizeof(int32);
if(sp.len < 0)
{
memcpy(data, covers, sizeof(T));
data += sizeof(T);
}
else
{
memcpy(data, covers, unsigned(sp.len) * sizeof(T));
data += sizeof(T) * unsigned(sp.len);
}
}
while(--num_spans);
write_int32(size_ptr, int32(unsigned(data - size_ptr)));
}
}
//---------------------------------------------------------------
const scanline_data& scanline_by_index(unsigned i) const
{
return (i < m_scanlines.size()) ? m_scanlines[i] : m_fake_scanline;
}
//---------------------------------------------------------------
const span_data& span_by_index(unsigned i) const
{
return (i < m_spans.size()) ? m_spans[i] : m_fake_span;
}
//---------------------------------------------------------------
const T* covers_by_index(int i) const
{
return m_covers[i];
}
private:
scanline_cell_storage<T> m_covers;
pod_bvector<span_data, 10> m_spans;
pod_bvector<scanline_data, 8> m_scanlines;
span_data m_fake_span;
scanline_data m_fake_scanline;
int m_min_x;
int m_min_y;
int m_max_x;
int m_max_y;
unsigned m_cur_scanline;
};
typedef scanline_storage_aa<int8u> scanline_storage_aa8; //--------scanline_storage_aa8
typedef scanline_storage_aa<int16u> scanline_storage_aa16; //--------scanline_storage_aa16
typedef scanline_storage_aa<int32u> scanline_storage_aa32; //--------scanline_storage_aa32
//------------------------------------------serialized_scanlines_adaptor_aa
template<class T> class serialized_scanlines_adaptor_aa
{
public:
typedef T cover_type;
//---------------------------------------------------------------------
class embedded_scanline
{
public:
typedef T cover_type;
//-----------------------------------------------------------------
class const_iterator
{
public:
struct span
{
int32 x;
int32 len; // If negative, it's a solid span, "covers" is valid
const T* covers;
};
const_iterator() : m_ptr(0) {}
const_iterator(const embedded_scanline* sl) :
m_ptr(sl->m_ptr),
m_dx(sl->m_dx)
{
init_span();
}
const span& operator*() const { return m_span; }
const span* operator->() const { return &m_span; }
void operator ++ ()
{
if(m_span.len < 0)
{
m_ptr += sizeof(T);
}
else
{
m_ptr += m_span.len * sizeof(T);
}
init_span();
}
private:
int read_int32()
{
int32 val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
void init_span()
{
m_span.x = read_int32() + m_dx;
m_span.len = read_int32();
m_span.covers = m_ptr;
}
const int8u* m_ptr;
span m_span;
int m_dx;
};
friend class const_iterator;
//-----------------------------------------------------------------
embedded_scanline() : m_ptr(0), m_y(0), m_num_spans(0) {}
//-----------------------------------------------------------------
void reset(int, int) {}
unsigned num_spans() const { return m_num_spans; }
int y() const { return m_y; }
const_iterator begin() const { return const_iterator(this); }
private:
//-----------------------------------------------------------------
int read_int32()
{
int32 val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
public:
//-----------------------------------------------------------------
void init(const int8u* ptr, int dx, int dy)
{
m_ptr = ptr;
m_y = read_int32() + dy;
m_num_spans = unsigned(read_int32());
m_dx = dx;
}
private:
const int8u* m_ptr;
int m_y;
unsigned m_num_spans;
int m_dx;
};
public:
//--------------------------------------------------------------------
serialized_scanlines_adaptor_aa() :
m_data(0),
m_end(0),
m_ptr(0),
m_dx(0),
m_dy(0),
m_min_x(std::numeric_limits<int>::max()),
m_min_y(std::numeric_limits<int>::max()),
m_max_x(std::numeric_limits<int>::min()),
m_max_y(std::numeric_limits<int>::min())
{}
//--------------------------------------------------------------------
serialized_scanlines_adaptor_aa(const int8u* data, unsigned size,
double dx, double dy) :
m_data(data),
m_end(data + size),
m_ptr(data),
m_dx(iround(dx)),
m_dy(iround(dy)),
m_min_x(std::numeric_limits<int>::max()),
m_min_y(std::numeric_limits<int>::max()),
m_max_x(std::numeric_limits<int>::min()),
m_max_y(std::numeric_limits<int>::min())
{}
//--------------------------------------------------------------------
void init(const int8u* data, unsigned size, double dx, double dy)
{
m_data = data;
m_end = data + size;
m_ptr = data;
m_dx = iround(dx);
m_dy = iround(dy);
m_min_x = std::numeric_limits<int>::max();
m_min_y = std::numeric_limits<int>::max();
m_max_x = std::numeric_limits<int>::min();
m_max_y = std::numeric_limits<int>::min();
}
private:
//--------------------------------------------------------------------
int read_int32()
{
int32 val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
//--------------------------------------------------------------------
unsigned read_int32u()
{
int32u val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
public:
// Iterate scanlines interface
//--------------------------------------------------------------------
bool rewind_scanlines()
{
m_ptr = m_data;
if(m_ptr < m_end)
{
m_min_x = read_int32() + m_dx;
m_min_y = read_int32() + m_dy;
m_max_x = read_int32() + m_dx;
m_max_y = read_int32() + m_dy;
}
return m_ptr < m_end;
}
//--------------------------------------------------------------------
int min_x() const { return m_min_x; }
int min_y() const { return m_min_y; }
int max_x() const { return m_max_x; }
int max_y() const { return m_max_y; }
//--------------------------------------------------------------------
template<class Scanline> bool sweep_scanline(Scanline& sl)
{
sl.reset_spans();
for(;;)
{
if(m_ptr >= m_end) return false;
read_int32(); // Skip scanline size in bytes
int y = read_int32() + m_dy;
unsigned num_spans = read_int32();
do
{
int x = read_int32() + m_dx;
int len = read_int32();
if(len < 0)
{
sl.add_span(x, unsigned(-len), *m_ptr);
m_ptr += sizeof(T);
}
else
{
sl.add_cells(x, len, m_ptr);
m_ptr += len * sizeof(T);
}
}
while(--num_spans);
if(sl.num_spans())
{
sl.finalize(y);
break;
}
}
return true;
}
//--------------------------------------------------------------------
// Specialization for embedded_scanline
bool sweep_scanline(embedded_scanline& sl)
{
do
{
if(m_ptr >= m_end) return false;
unsigned byte_size = read_int32u();
sl.init(m_ptr, m_dx, m_dy);
m_ptr += byte_size - sizeof(int32);
}
while(sl.num_spans() == 0);
return true;
}
private:
const int8u* m_data;
const int8u* m_end;
const int8u* m_ptr;
int m_dx;
int m_dy;
int m_min_x;
int m_min_y;
int m_max_x;
int m_max_y;
};
typedef serialized_scanlines_adaptor_aa<int8u> serialized_scanlines_adaptor_aa8; //----serialized_scanlines_adaptor_aa8
typedef serialized_scanlines_adaptor_aa<int16u> serialized_scanlines_adaptor_aa16; //----serialized_scanlines_adaptor_aa16
typedef serialized_scanlines_adaptor_aa<int32u> serialized_scanlines_adaptor_aa32; //----serialized_scanlines_adaptor_aa32
}
#endif

587
xs/src/agg/agg_scanline_storage_bin.h
View file

@ -1,587 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for 32-bit screen coordinates has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SCANLINE_STORAGE_BIN_INCLUDED
#define AGG_SCANLINE_STORAGE_BIN_INCLUDED
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <limits>
#include "agg_array.h"
namespace agg
{
//-----------------------------------------------scanline_storage_bin
class scanline_storage_bin
{
public:
//---------------------------------------------------------------
struct span_data
{
int32 x;
int32 len;
};
//---------------------------------------------------------------
struct scanline_data
{
int y;
unsigned num_spans;
unsigned start_span;
};
//---------------------------------------------------------------
class embedded_scanline
{
public:
//-----------------------------------------------------------
class const_iterator
{
public:
const_iterator() : m_storage(0) {}
const_iterator(const embedded_scanline* sl) :
m_storage(sl->m_storage),
m_span_idx(sl->m_scanline.start_span)
{
m_span = m_storage->span_by_index(m_span_idx);
}
const span_data& operator*() const { return m_span; }
const span_data* operator->() const { return &m_span; }
void operator ++ ()
{
++m_span_idx;
m_span = m_storage->span_by_index(m_span_idx);
}
private:
const scanline_storage_bin* m_storage;
unsigned m_span_idx;
span_data m_span;
};
friend class const_iterator;
//-----------------------------------------------------------
embedded_scanline(scanline_storage_bin& storage) :
m_storage(&storage)
{
setup(0);
}
//-----------------------------------------------------------
void reset(int, int) {}
unsigned num_spans() const { return m_scanline.num_spans; }
int y() const { return m_scanline.y; }
const_iterator begin() const { return const_iterator(this); }
//-----------------------------------------------------------
void setup(unsigned scanline_idx)
{
m_scanline_idx = scanline_idx;
m_scanline = m_storage->scanline_by_index(m_scanline_idx);
}
private:
scanline_storage_bin* m_storage;
scanline_data m_scanline;
unsigned m_scanline_idx;
};
//---------------------------------------------------------------
scanline_storage_bin() :
m_spans(256-2), // Block increment size
m_scanlines(),
m_min_x(std::numeric_limits<int>::max()),
m_min_y(std::numeric_limits<int>::max()),
m_max_x(std::numeric_limits<int>::min()),
m_max_y(std::numeric_limits<int>::min()),
m_cur_scanline(0)
{
m_fake_scanline.y = 0;
m_fake_scanline.num_spans = 0;
m_fake_scanline.start_span = 0;
m_fake_span.x = 0;
m_fake_span.len = 0;
}
// Renderer Interface
//---------------------------------------------------------------
void prepare()
{
m_scanlines.remove_all();
m_spans.remove_all();
m_min_x = std::numeric_limits<int>::max();
m_min_y = std::numeric_limits<int>::max();
m_max_x = std::numeric_limits<int>::min();
m_max_y = std::numeric_limits<int>::min();
m_cur_scanline = 0;
}
//---------------------------------------------------------------
template<class Scanline> void render(const Scanline& sl)
{
scanline_data sl_this;
int y = sl.y();
if(y < m_min_y) m_min_y = y;
if(y > m_max_y) m_max_y = y;
sl_this.y = y;
sl_this.num_spans = sl.num_spans();
sl_this.start_span = m_spans.size();
typename Scanline::const_iterator span_iterator = sl.begin();
unsigned num_spans = sl_this.num_spans;
for(;;)
{
span_data sp;
sp.x = span_iterator->x;
sp.len = (int32)abs((int)(span_iterator->len));
m_spans.add(sp);
int x1 = sp.x;
int x2 = sp.x + sp.len - 1;
if(x1 < m_min_x) m_min_x = x1;
if(x2 > m_max_x) m_max_x = x2;
if(--num_spans == 0) break;
++span_iterator;
}
m_scanlines.add(sl_this);
}
//---------------------------------------------------------------
// Iterate scanlines interface
int min_x() const { return m_min_x; }
int min_y() const { return m_min_y; }
int max_x() const { return m_max_x; }
int max_y() const { return m_max_y; }
//---------------------------------------------------------------
bool rewind_scanlines()
{
m_cur_scanline = 0;
return m_scanlines.size() > 0;
}
//---------------------------------------------------------------
template<class Scanline> bool sweep_scanline(Scanline& sl)
{
sl.reset_spans();
for(;;)
{
if(m_cur_scanline >= m_scanlines.size()) return false;
const scanline_data& sl_this = m_scanlines[m_cur_scanline];
unsigned num_spans = sl_this.num_spans;
unsigned span_idx = sl_this.start_span;
do
{
const span_data& sp = m_spans[span_idx++];
sl.add_span(sp.x, sp.len, cover_full);
}
while(--num_spans);
++m_cur_scanline;
if(sl.num_spans())
{
sl.finalize(sl_this.y);
break;
}
}
return true;
}
//---------------------------------------------------------------
// Specialization for embedded_scanline
bool sweep_scanline(embedded_scanline& sl)
{
do
{
if(m_cur_scanline >= m_scanlines.size()) return false;
sl.setup(m_cur_scanline);
++m_cur_scanline;
}
while(sl.num_spans() == 0);
return true;
}
//---------------------------------------------------------------
unsigned byte_size() const
{
unsigned i;
unsigned size = sizeof(int32) * 4; // min_x, min_y, max_x, max_y
for(i = 0; i < m_scanlines.size(); ++i)
{
size += sizeof(int32) * 2 + // Y, num_spans
unsigned(m_scanlines[i].num_spans) * sizeof(int32) * 2; // X, span_len
}
return size;
}
//---------------------------------------------------------------
static void write_int32(int8u* dst, int32 val)
{
dst[0] = ((const int8u*)&val)[0];
dst[1] = ((const int8u*)&val)[1];
dst[2] = ((const int8u*)&val)[2];
dst[3] = ((const int8u*)&val)[3];
}
//---------------------------------------------------------------
void serialize(int8u* data) const
{
unsigned i;
write_int32(data, min_x()); // min_x
data += sizeof(int32);
write_int32(data, min_y()); // min_y
data += sizeof(int32);
write_int32(data, max_x()); // max_x
data += sizeof(int32);
write_int32(data, max_y()); // max_y
data += sizeof(int32);
for(i = 0; i < m_scanlines.size(); ++i)
{
const scanline_data& sl_this = m_scanlines[i];
write_int32(data, sl_this.y); // Y
data += sizeof(int32);
write_int32(data, sl_this.num_spans); // num_spans
data += sizeof(int32);
unsigned num_spans = sl_this.num_spans;
unsigned span_idx = sl_this.start_span;
do
{
const span_data& sp = m_spans[span_idx++];
write_int32(data, sp.x); // X
data += sizeof(int32);
write_int32(data, sp.len); // len
data += sizeof(int32);
}
while(--num_spans);
}
}
//---------------------------------------------------------------
const scanline_data& scanline_by_index(unsigned i) const
{
return (i < m_scanlines.size()) ? m_scanlines[i] : m_fake_scanline;
}
//---------------------------------------------------------------
const span_data& span_by_index(unsigned i) const
{
return (i < m_spans.size()) ? m_spans[i] : m_fake_span;
}
private:
pod_bvector<span_data, 10> m_spans;
pod_bvector<scanline_data, 8> m_scanlines;
span_data m_fake_span;
scanline_data m_fake_scanline;
int m_min_x;
int m_min_y;
int m_max_x;
int m_max_y;
unsigned m_cur_scanline;
};
//---------------------------------------serialized_scanlines_adaptor_bin
class serialized_scanlines_adaptor_bin
{
public:
typedef bool cover_type;
//--------------------------------------------------------------------
class embedded_scanline
{
public:
//----------------------------------------------------------------
class const_iterator
{
public:
struct span
{
int32 x;
int32 len;
};
const_iterator() : m_ptr(0) {}
const_iterator(const embedded_scanline* sl) :
m_ptr(sl->m_ptr),
m_dx(sl->m_dx)
{
m_span.x = read_int32() + m_dx;
m_span.len = read_int32();
}
const span& operator*() const { return m_span; }
const span* operator->() const { return &m_span; }
void operator ++ ()
{
m_span.x = read_int32() + m_dx;
m_span.len = read_int32();
}
private:
int read_int32()
{
int32 val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
const int8u* m_ptr;
span m_span;
int m_dx;
};
friend class const_iterator;
//----------------------------------------------------------------
embedded_scanline() : m_ptr(0), m_y(0), m_num_spans(0) {}
//----------------------------------------------------------------
void reset(int, int) {}
unsigned num_spans() const { return m_num_spans; }
int y() const { return m_y; }
const_iterator begin() const { return const_iterator(this); }
private:
//----------------------------------------------------------------
int read_int32()
{
int32 val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
public:
//----------------------------------------------------------------
void init(const int8u* ptr, int dx, int dy)
{
m_ptr = ptr;
m_y = read_int32() + dy;
m_num_spans = unsigned(read_int32());
m_dx = dx;
}
private:
const int8u* m_ptr;
int m_y;
unsigned m_num_spans;
int m_dx;
};
public:
//--------------------------------------------------------------------
serialized_scanlines_adaptor_bin() :
m_data(0),
m_end(0),
m_ptr(0),
m_dx(0),
m_dy(0),
m_min_x(std::numeric_limits<int>::max()),
m_min_y(std::numeric_limits<int>::max()),
m_max_x(std::numeric_limits<int>::min()),
m_max_y(std::numeric_limits<int>::min())
{}
//--------------------------------------------------------------------
serialized_scanlines_adaptor_bin(const int8u* data, unsigned size,
double dx, double dy) :
m_data(data),
m_end(data + size),
m_ptr(data),
m_dx(iround(dx)),
m_dy(iround(dy)),
m_min_x(std::numeric_limits<int>::max()),
m_min_y(std::numeric_limits<int>::max()),
m_max_x(std::numeric_limits<int>::min()),
m_max_y(std::numeric_limits<int>::min())
{}
//--------------------------------------------------------------------
void init(const int8u* data, unsigned size, double dx, double dy)
{
m_data = data;
m_end = data + size;
m_ptr = data;
m_dx = iround(dx);
m_dy = iround(dy);
m_min_x = std::numeric_limits<int>::max();
m_min_y = std::numeric_limits<int>::max();
m_max_x = std::numeric_limits<int>::min();
m_max_y = std::numeric_limits<int>::min();
}
private:
//--------------------------------------------------------------------
int read_int32()
{
int32 val;
((int8u*)&val)[0] = *m_ptr++;
((int8u*)&val)[1] = *m_ptr++;
((int8u*)&val)[2] = *m_ptr++;
((int8u*)&val)[3] = *m_ptr++;
return val;
}
public:
// Iterate scanlines interface
//--------------------------------------------------------------------
bool rewind_scanlines()
{
m_ptr = m_data;
if(m_ptr < m_end)
{
m_min_x = read_int32() + m_dx;
m_min_y = read_int32() + m_dy;
m_max_x = read_int32() + m_dx;
m_max_y = read_int32() + m_dy;
}
return m_ptr < m_end;
}
//--------------------------------------------------------------------
int min_x() const { return m_min_x; }
int min_y() const { return m_min_y; }
int max_x() const { return m_max_x; }
int max_y() const { return m_max_y; }
//--------------------------------------------------------------------
template<class Scanline> bool sweep_scanline(Scanline& sl)
{
sl.reset_spans();
for(;;)
{
if(m_ptr >= m_end) return false;
int y = read_int32() + m_dy;
unsigned num_spans = read_int32();
do
{
int x = read_int32() + m_dx;
int len = read_int32();
if(len < 0) len = -len;
sl.add_span(x, unsigned(len), cover_full);
}
while(--num_spans);
if(sl.num_spans())
{
sl.finalize(y);
break;
}
}
return true;
}
//--------------------------------------------------------------------
// Specialization for embedded_scanline
bool sweep_scanline(embedded_scanline& sl)
{
do
{
if(m_ptr >= m_end) return false;
sl.init(m_ptr, m_dx, m_dy);
// Jump to the next scanline
//--------------------------
read_int32(); // Y
int num_spans = read_int32(); // num_spans
m_ptr += num_spans * sizeof(int32) * 2;
}
while(sl.num_spans() == 0);
return true;
}
private:
const int8u* m_data;
const int8u* m_end;
const int8u* m_ptr;
int m_dx;
int m_dy;
int m_min_x;
int m_min_y;
int m_max_x;
int m_max_y;
};
}
#endif

499
xs/src/agg/agg_scanline_u.h
View file

@ -1,499 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for 32-bit screen coordinates (scanline32_u) has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SCANLINE_U_INCLUDED
#define AGG_SCANLINE_U_INCLUDED
#include "agg_array.h"
namespace agg
{
//=============================================================scanline_u8
//
// Unpacked scanline container class
//
// This class is used to transfer data from a scanline rasterizer
// to the rendering buffer. It's organized very simple. The class stores
// information of horizontal spans to render it into a pixel-map buffer.
// Each span has staring X, length, and an array of bytes that determine the
// cover-values for each pixel.
// Before using this class you should know the minimal and maximal pixel
// coordinates of your scanline. The protocol of using is:
// 1. reset(min_x, max_x)
// 2. add_cell() / add_span() - accumulate scanline.
// When forming one scanline the next X coordinate must be always greater
// than the last stored one, i.e. it works only with ordered coordinates.
// 3. Call finalize(y) and render the scanline.
// 3. Call reset_spans() to prepare for the new scanline.
//
// 4. Rendering:
//
// Scanline provides an iterator class that allows you to extract
// the spans and the cover values for each pixel. Be aware that clipping
// has not been done yet, so you should perform it yourself.
// Use scanline_u8::iterator to render spans:
//-------------------------------------------------------------------------
//
// int y = sl.y(); // Y-coordinate of the scanline
//
// ************************************
// ...Perform vertical clipping here...
// ************************************
//
// scanline_u8::const_iterator span = sl.begin();
//
// unsigned char* row = m_rbuf->row(y); // The the address of the beginning
// // of the current row
//
// unsigned num_spans = sl.num_spans(); // Number of spans. It's guaranteed that
// // num_spans is always greater than 0.
//
// do
// {
// const scanline_u8::cover_type* covers =
// span->covers; // The array of the cover values
//
// int num_pix = span->len; // Number of pixels of the span.
// // Always greater than 0, still it's
// // better to use "int" instead of
// // "unsigned" because it's more
// // convenient for clipping
// int x = span->x;
//
// **************************************
// ...Perform horizontal clipping here...
// ...you have x, covers, and pix_count..
// **************************************
//
// unsigned char* dst = row + x; // Calculate the start address of the row.
// // In this case we assume a simple
// // grayscale image 1-byte per pixel.
// do
// {
// *dst++ = *covers++; // Hypotetical rendering.
// }
// while(--num_pix);
//
// ++span;
// }
// while(--num_spans); // num_spans cannot be 0, so this loop is quite safe
//------------------------------------------------------------------------
//
// The question is: why should we accumulate the whole scanline when we
// could render just separate spans when they're ready?
// That's because using the scanline is generally faster. When is consists
// of more than one span the conditions for the processor cash system
// are better, because switching between two different areas of memory
// (that can be very large) occurs less frequently.
//------------------------------------------------------------------------
class scanline_u8
{
public:
typedef scanline_u8 self_type;
typedef int8u cover_type;
typedef int16 coord_type;
//--------------------------------------------------------------------
struct span
{
coord_type x;
coord_type len;
cover_type* covers;
};
typedef span* iterator;
typedef const span* const_iterator;
//--------------------------------------------------------------------
scanline_u8() :
m_min_x(0),
m_last_x(0x7FFFFFF0),
m_cur_span(0)
{}
//--------------------------------------------------------------------
void reset(int min_x, int max_x)
{
unsigned max_len = max_x - min_x + 2;
if(max_len > m_spans.size())
{
m_spans.resize(max_len);
m_covers.resize(max_len);
}
m_last_x = 0x7FFFFFF0;
m_min_x = min_x;
m_cur_span = &m_spans[0];
}
//--------------------------------------------------------------------
void add_cell(int x, unsigned cover)
{
x -= m_min_x;
m_covers[x] = (cover_type)cover;
if(x == m_last_x+1)
{
m_cur_span->len++;
}
else
{
m_cur_span++;
m_cur_span->x = (coord_type)(x + m_min_x);
m_cur_span->len = 1;
m_cur_span->covers = &m_covers[x];
}
m_last_x = x;
}
//--------------------------------------------------------------------
void add_cells(int x, unsigned len, const cover_type* covers)
{
x -= m_min_x;
memcpy(&m_covers[x], covers, len * sizeof(cover_type));
if(x == m_last_x+1)
{
m_cur_span->len += (coord_type)len;
}
else
{
m_cur_span++;
m_cur_span->x = (coord_type)(x + m_min_x);
m_cur_span->len = (coord_type)len;
m_cur_span->covers = &m_covers[x];
}
m_last_x = x + len - 1;
}
//--------------------------------------------------------------------
void add_span(int x, unsigned len, unsigned cover)
{
x -= m_min_x;
memset(&m_covers[x], cover, len);
if(x == m_last_x+1)
{
m_cur_span->len += (coord_type)len;
}
else
{
m_cur_span++;
m_cur_span->x = (coord_type)(x + m_min_x);
m_cur_span->len = (coord_type)len;
m_cur_span->covers = &m_covers[x];
}
m_last_x = x + len - 1;
}
//--------------------------------------------------------------------
void finalize(int y)
{
m_y = y;
}
//--------------------------------------------------------------------
void reset_spans()
{
m_last_x = 0x7FFFFFF0;
m_cur_span = &m_spans[0];
}
//--------------------------------------------------------------------
int y() const { return m_y; }
unsigned num_spans() const { return unsigned(m_cur_span - &m_spans[0]); }
const_iterator begin() const { return &m_spans[1]; }
iterator begin() { return &m_spans[1]; }
private:
scanline_u8(const self_type&);
const self_type& operator = (const self_type&);
private:
int m_min_x;
int m_last_x;
int m_y;
pod_array<cover_type> m_covers;
pod_array<span> m_spans;
span* m_cur_span;
};
//==========================================================scanline_u8_am
//
// The scanline container with alpha-masking
//
//------------------------------------------------------------------------
template<class AlphaMask>
class scanline_u8_am : public scanline_u8
{
public:
typedef scanline_u8 base_type;
typedef AlphaMask alpha_mask_type;
typedef base_type::cover_type cover_type;
typedef base_type::coord_type coord_type;
scanline_u8_am() : base_type(), m_alpha_mask(0) {}
scanline_u8_am(AlphaMask& am) : base_type(), m_alpha_mask(&am) {}
//--------------------------------------------------------------------
void finalize(int span_y)
{
base_type::finalize(span_y);
if(m_alpha_mask)
{
typename base_type::iterator span = base_type::begin();
unsigned count = base_type::num_spans();
do
{
m_alpha_mask->combine_hspan(span->x,
base_type::y(),
span->covers,
span->len);
++span;
}
while(--count);
}
}
private:
AlphaMask* m_alpha_mask;
};
//===========================================================scanline32_u8
class scanline32_u8
{
public:
typedef scanline32_u8 self_type;
typedef int8u cover_type;
typedef int32 coord_type;
//--------------------------------------------------------------------
struct span
{
span() {}
span(coord_type x_, coord_type len_, cover_type* covers_) :
x(x_), len(len_), covers(covers_) {}
coord_type x;
coord_type len;
cover_type* covers;
};
typedef pod_bvector<span, 4> span_array_type;
//--------------------------------------------------------------------
class const_iterator
{
public:
const_iterator(const span_array_type& spans) :
m_spans(spans),
m_span_idx(0)
{}
const span& operator*() const { return m_spans[m_span_idx]; }
const span* operator->() const { return &m_spans[m_span_idx]; }
void operator ++ () { ++m_span_idx; }
private:
const span_array_type& m_spans;
unsigned m_span_idx;
};
//--------------------------------------------------------------------
class iterator
{
public:
iterator(span_array_type& spans) :
m_spans(spans),
m_span_idx(0)
{}
span& operator*() { return m_spans[m_span_idx]; }
span* operator->() { return &m_spans[m_span_idx]; }
void operator ++ () { ++m_span_idx; }
private:
span_array_type& m_spans;
unsigned m_span_idx;
};
//--------------------------------------------------------------------
scanline32_u8() :
m_min_x(0),
m_last_x(0x7FFFFFF0),
m_covers()
{}
//--------------------------------------------------------------------
void reset(int min_x, int max_x)
{
unsigned max_len = max_x - min_x + 2;
if(max_len > m_covers.size())
{
m_covers.resize(max_len);
}
m_last_x = 0x7FFFFFF0;
m_min_x = min_x;
m_spans.remove_all();
}
//--------------------------------------------------------------------
void add_cell(int x, unsigned cover)
{
x -= m_min_x;
m_covers[x] = cover_type(cover);
if(x == m_last_x+1)
{
m_spans.last().len++;
}
else
{
m_spans.add(span(coord_type(x + m_min_x), 1, &m_covers[x]));
}
m_last_x = x;
}
//--------------------------------------------------------------------
void add_cells(int x, unsigned len, const cover_type* covers)
{
x -= m_min_x;
memcpy(&m_covers[x], covers, len * sizeof(cover_type));
if(x == m_last_x+1)
{
m_spans.last().len += coord_type(len);
}
else
{
m_spans.add(span(coord_type(x + m_min_x),
coord_type(len),
&m_covers[x]));
}
m_last_x = x + len - 1;
}
//--------------------------------------------------------------------
void add_span(int x, unsigned len, unsigned cover)
{
x -= m_min_x;
memset(&m_covers[x], cover, len);
if(x == m_last_x+1)
{
m_spans.last().len += coord_type(len);
}
else
{
m_spans.add(span(coord_type(x + m_min_x),
coord_type(len),
&m_covers[x]));
}
m_last_x = x + len - 1;
}
//--------------------------------------------------------------------
void finalize(int y)
{
m_y = y;
}
//--------------------------------------------------------------------
void reset_spans()
{
m_last_x = 0x7FFFFFF0;
m_spans.remove_all();
}
//--------------------------------------------------------------------
int y() const { return m_y; }
unsigned num_spans() const { return m_spans.size(); }
const_iterator begin() const { return const_iterator(m_spans); }
iterator begin() { return iterator(m_spans); }
private:
scanline32_u8(const self_type&);
const self_type& operator = (const self_type&);
private:
int m_min_x;
int m_last_x;
int m_y;
pod_array<cover_type> m_covers;
span_array_type m_spans;
};
//========================================================scanline32_u8_am
//
// The scanline container with alpha-masking
//
//------------------------------------------------------------------------
template<class AlphaMask>
class scanline32_u8_am : public scanline32_u8
{
public:
typedef scanline32_u8 base_type;
typedef AlphaMask alpha_mask_type;
typedef base_type::cover_type cover_type;
typedef base_type::coord_type coord_type;
scanline32_u8_am() : base_type(), m_alpha_mask(0) {}
scanline32_u8_am(AlphaMask& am) : base_type(), m_alpha_mask(&am) {}
//--------------------------------------------------------------------
void finalize(int span_y)
{
base_type::finalize(span_y);
if(m_alpha_mask)
{
typename base_type::iterator span = base_type::begin();
unsigned count = base_type::num_spans();
do
{
m_alpha_mask->combine_hspan(span->x,
base_type::y(),
span->covers,
span->len);
++span;
}
while(--count);
}
}
private:
AlphaMask* m_alpha_mask;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SHORTEN_PATH_INCLUDED
#define AGG_SHORTEN_PATH_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//===========================================================shorten_path
template<class VertexSequence>
void shorten_path(VertexSequence& vs, double s, unsigned closed = 0)
{
typedef typename VertexSequence::value_type vertex_type;
if(s > 0.0 && vs.size() > 1)
{
double d;
int n = int(vs.size() - 2);
while(n)
{
d = vs[n].dist;
if(d > s) break;
vs.remove_last();
s -= d;
--n;
}
if(vs.size() < 2)
{
vs.remove_all();
}
else
{
n = vs.size() - 1;
vertex_type& prev = vs[n-1];
vertex_type& last = vs[n];
d = (prev.dist - s) / prev.dist;
double x = prev.x + (last.x - prev.x) * d;
double y = prev.y + (last.y - prev.y) * d;
last.x = x;
last.y = y;
if(!prev(last)) vs.remove_last();
vs.close(closed != 0);
}
}
}
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Solving simultaneous equations
//
//----------------------------------------------------------------------------
#ifndef AGG_SIMUL_EQ_INCLUDED
#define AGG_SIMUL_EQ_INCLUDED
#include <math.h>
#include "agg_basics.h"
namespace agg
{
//=============================================================swap_arrays
template<class T> void swap_arrays(T* a1, T* a2, unsigned n)
{
unsigned i;
for(i = 0; i < n; i++)
{
T tmp = *a1;
*a1++ = *a2;
*a2++ = tmp;
}
}
//============================================================matrix_pivot
template<unsigned Rows, unsigned Cols>
struct matrix_pivot
{
static int pivot(double m[Rows][Cols], unsigned row)
{
int k = int(row);
double max_val, tmp;
max_val = -1.0;
unsigned i;
for(i = row; i < Rows; i++)
{
if((tmp = fabs(m[i][row])) > max_val && tmp != 0.0)
{
max_val = tmp;
k = i;
}
}
if(m[k][row] == 0.0)
{
return -1;
}
if(k != int(row))
{
swap_arrays(m[k], m[row], Cols);
return k;
}
return 0;
}
};
//===============================================================simul_eq
template<unsigned Size, unsigned RightCols>
struct simul_eq
{
static bool solve(const double left[Size][Size],
const double right[Size][RightCols],
double result[Size][RightCols])
{
unsigned i, j, k;
double a1;
double tmp[Size][Size + RightCols];
for(i = 0; i < Size; i++)
{
for(j = 0; j < Size; j++)
{
tmp[i][j] = left[i][j];
}
for(j = 0; j < RightCols; j++)
{
tmp[i][Size + j] = right[i][j];
}
}
for(k = 0; k < Size; k++)
{
if(matrix_pivot<Size, Size + RightCols>::pivot(tmp, k) < 0)
{
return false; // Singularity....
}
a1 = tmp[k][k];
for(j = k; j < Size + RightCols; j++)
{
tmp[k][j] /= a1;
}
for(i = k + 1; i < Size; i++)
{
a1 = tmp[i][k];
for (j = k; j < Size + RightCols; j++)
{
tmp[i][j] -= a1 * tmp[k][j];
}
}
}
for(k = 0; k < RightCols; k++)
{
int m;
for(m = int(Size - 1); m >= 0; m--)
{
result[m][k] = tmp[m][Size + k];
for(j = m + 1; j < Size; j++)
{
result[m][k] -= tmp[m][j] * result[j][k];
}
}
}
return true;
}
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_ALLOCATOR_INCLUDED
#define AGG_SPAN_ALLOCATOR_INCLUDED
#include "agg_array.h"
namespace agg
{
//----------------------------------------------------------span_allocator
template<class ColorT> class span_allocator
{
public:
typedef ColorT color_type;
//--------------------------------------------------------------------
AGG_INLINE color_type* allocate(unsigned span_len)
{
if(span_len > m_span.size())
{
// To reduce the number of reallocs we align the
// span_len to 256 color elements.
// Well, I just like this number and it looks reasonable.
//-----------------------
m_span.resize(((span_len + 255) >> 8) << 8);
}
return &m_span[0];
}
AGG_INLINE color_type* span() { return &m_span[0]; }
AGG_INLINE unsigned max_span_len() const { return m_span.size(); }
private:
pod_array<color_type> m_span;
};
}
#endif

56
xs/src/agg/agg_span_converter.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_CONVERTER_INCLUDED
#define AGG_SPAN_CONVERTER_INCLUDED
#include "agg_basics.h"
namespace agg
{
//----------------------------------------------------------span_converter
template<class SpanGenerator, class SpanConverter> class span_converter
{
public:
typedef typename SpanGenerator::color_type color_type;
span_converter(SpanGenerator& span_gen, SpanConverter& span_cnv) :
m_span_gen(&span_gen), m_span_cnv(&span_cnv) {}
void attach_generator(SpanGenerator& span_gen) { m_span_gen = &span_gen; }
void attach_converter(SpanConverter& span_cnv) { m_span_cnv = &span_cnv; }
//--------------------------------------------------------------------
void prepare()
{
m_span_gen->prepare();
m_span_cnv->prepare();
}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
m_span_gen->generate(span, x, y, len);
m_span_cnv->generate(span, x, y, len);
}
private:
SpanGenerator* m_span_gen;
SpanConverter* m_span_cnv;
};
}
#endif

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xs/src/agg/agg_span_gouraud.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_GOURAUD_INCLUDED
#define AGG_SPAN_GOURAUD_INCLUDED
#include "agg_basics.h"
#include "agg_math.h"
namespace agg
{
//============================================================span_gouraud
template<class ColorT> class span_gouraud
{
public:
typedef ColorT color_type;
struct coord_type
{
double x;
double y;
color_type color;
};
//--------------------------------------------------------------------
span_gouraud() :
m_vertex(0)
{
m_cmd[0] = path_cmd_stop;
}
//--------------------------------------------------------------------
span_gouraud(const color_type& c1,
const color_type& c2,
const color_type& c3,
double x1, double y1,
double x2, double y2,
double x3, double y3,
double d) :
m_vertex(0)
{
colors(c1, c2, c3);
triangle(x1, y1, x2, y2, x3, y3, d);
}
//--------------------------------------------------------------------
void colors(ColorT c1, ColorT c2, ColorT c3)
{
m_coord[0].color = c1;
m_coord[1].color = c2;
m_coord[2].color = c3;
}
//--------------------------------------------------------------------
// Sets the triangle and dilates it if needed.
// The trick here is to calculate beveled joins in the vertices of the
// triangle and render it as a 6-vertex polygon.
// It's necessary to achieve numerical stability.
// However, the coordinates to interpolate colors are calculated
// as miter joins (calc_intersection).
void triangle(double x1, double y1,
double x2, double y2,
double x3, double y3,
double d)
{
m_coord[0].x = m_x[0] = x1;
m_coord[0].y = m_y[0] = y1;
m_coord[1].x = m_x[1] = x2;
m_coord[1].y = m_y[1] = y2;
m_coord[2].x = m_x[2] = x3;
m_coord[2].y = m_y[2] = y3;
m_cmd[0] = path_cmd_move_to;
m_cmd[1] = path_cmd_line_to;
m_cmd[2] = path_cmd_line_to;
m_cmd[3] = path_cmd_stop;
if(d != 0.0)
{
dilate_triangle(m_coord[0].x, m_coord[0].y,
m_coord[1].x, m_coord[1].y,
m_coord[2].x, m_coord[2].y,
m_x, m_y, d);
calc_intersection(m_x[4], m_y[4], m_x[5], m_y[5],
m_x[0], m_y[0], m_x[1], m_y[1],
&m_coord[0].x, &m_coord[0].y);
calc_intersection(m_x[0], m_y[0], m_x[1], m_y[1],
m_x[2], m_y[2], m_x[3], m_y[3],
&m_coord[1].x, &m_coord[1].y);
calc_intersection(m_x[2], m_y[2], m_x[3], m_y[3],
m_x[4], m_y[4], m_x[5], m_y[5],
&m_coord[2].x, &m_coord[2].y);
m_cmd[3] = path_cmd_line_to;
m_cmd[4] = path_cmd_line_to;
m_cmd[5] = path_cmd_line_to;
m_cmd[6] = path_cmd_stop;
}
}
//--------------------------------------------------------------------
// Vertex Source Interface to feed the coordinates to the rasterizer
void rewind(unsigned)
{
m_vertex = 0;
}
//--------------------------------------------------------------------
unsigned vertex(double* x, double* y)
{
*x = m_x[m_vertex];
*y = m_y[m_vertex];
return m_cmd[m_vertex++];
}
protected:
//--------------------------------------------------------------------
void arrange_vertices(coord_type* coord) const
{
coord[0] = m_coord[0];
coord[1] = m_coord[1];
coord[2] = m_coord[2];
if(m_coord[0].y > m_coord[2].y)
{
coord[0] = m_coord[2];
coord[2] = m_coord[0];
}
coord_type tmp;
if(coord[0].y > coord[1].y)
{
tmp = coord[1];
coord[1] = coord[0];
coord[0] = tmp;
}
if(coord[1].y > coord[2].y)
{
tmp = coord[2];
coord[2] = coord[1];
coord[1] = tmp;
}
}
private:
//--------------------------------------------------------------------
coord_type m_coord[3];
double m_x[8];
double m_y[8];
unsigned m_cmd[8];
unsigned m_vertex;
};
}
#endif

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xs/src/agg/agg_span_gouraud_gray.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_GOURAUD_GRAY_INCLUDED
#define AGG_SPAN_GOURAUD_GRAY_INCLUDED
#include "agg_basics.h"
#include "agg_color_gray.h"
#include "agg_dda_line.h"
#include "agg_span_gouraud.h"
namespace agg
{
//=======================================================span_gouraud_gray
template<class ColorT> class span_gouraud_gray : public span_gouraud<ColorT>
{
public:
typedef ColorT color_type;
typedef typename color_type::value_type value_type;
typedef span_gouraud<color_type> base_type;
typedef typename base_type::coord_type coord_type;
enum subpixel_scale_e
{
subpixel_shift = 4,
subpixel_scale = 1 << subpixel_shift
};
private:
//--------------------------------------------------------------------
struct gray_calc
{
void init(const coord_type& c1, const coord_type& c2)
{
m_x1 = c1.x - 0.5;
m_y1 = c1.y - 0.5;
m_dx = c2.x - c1.x;
double dy = c2.y - c1.y;
m_1dy = (fabs(dy) < 1e-10) ? 1e10 : 1.0 / dy;
m_v1 = c1.color.v;
m_a1 = c1.color.a;
m_dv = c2.color.v - m_v1;
m_da = c2.color.a - m_a1;
}
void calc(double y)
{
double k = (y - m_y1) * m_1dy;
if(k < 0.0) k = 0.0;
if(k > 1.0) k = 1.0;
m_v = m_v1 + iround(m_dv * k);
m_a = m_a1 + iround(m_da * k);
m_x = iround((m_x1 + m_dx * k) * subpixel_scale);
}
double m_x1;
double m_y1;
double m_dx;
double m_1dy;
int m_v1;
int m_a1;
int m_dv;
int m_da;
int m_v;
int m_a;
int m_x;
};
public:
//--------------------------------------------------------------------
span_gouraud_gray() {}
span_gouraud_gray(const color_type& c1,
const color_type& c2,
const color_type& c3,
double x1, double y1,
double x2, double y2,
double x3, double y3,
double d = 0) :
base_type(c1, c2, c3, x1, y1, x2, y2, x3, y3, d)
{}
//--------------------------------------------------------------------
void prepare()
{
coord_type coord[3];
base_type::arrange_vertices(coord);
m_y2 = int(coord[1].y);
m_swap = cross_product(coord[0].x, coord[0].y,
coord[2].x, coord[2].y,
coord[1].x, coord[1].y) < 0.0;
m_c1.init(coord[0], coord[2]);
m_c2.init(coord[0], coord[1]);
m_c3.init(coord[1], coord[2]);
}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
m_c1.calc(y);
const gray_calc* pc1 = &m_c1;
const gray_calc* pc2 = &m_c2;
if(y < m_y2)
{
// Bottom part of the triangle (first subtriangle)
//-------------------------
m_c2.calc(y + m_c2.m_1dy);
}
else
{
// Upper part (second subtriangle)
//-------------------------
m_c3.calc(y - m_c3.m_1dy);
pc2 = &m_c3;
}
if(m_swap)
{
// It means that the triangle is oriented clockwise,
// so that we need to swap the controlling structures
//-------------------------
const gray_calc* t = pc2;
pc2 = pc1;
pc1 = t;
}
// Get the horizontal length with subpixel accuracy
// and protect it from division by zero
//-------------------------
int nlen = abs(pc2->m_x - pc1->m_x);
if(nlen <= 0) nlen = 1;
dda_line_interpolator<14> v(pc1->m_v, pc2->m_v, nlen);
dda_line_interpolator<14> a(pc1->m_a, pc2->m_a, nlen);
// Calculate the starting point of the gradient with subpixel
// accuracy and correct (roll back) the interpolators.
// This operation will also clip the beginning of the span
// if necessary.
//-------------------------
int start = pc1->m_x - (x << subpixel_shift);
v -= start;
a -= start;
nlen += start;
int vv, va;
enum lim_e { lim = color_type::base_mask };
// Beginning part of the span. Since we rolled back the
// interpolators, the color values may have overflow.
// So that, we render the beginning part with checking
// for overflow. It lasts until "start" is positive;
// typically it's 1-2 pixels, but may be more in some cases.
//-------------------------
while(len && start > 0)
{
vv = v.y();
va = a.y();
if(vv < 0) vv = 0; if(vv > lim) vv = lim;
if(va < 0) va = 0; if(va > lim) va = lim;
span->v = (value_type)vv;
span->a = (value_type)va;
v += subpixel_scale;
a += subpixel_scale;
nlen -= subpixel_scale;
start -= subpixel_scale;
++span;
--len;
}
// Middle part, no checking for overflow.
// Actual spans can be longer than the calculated length
// because of anti-aliasing, thus, the interpolators can
// overflow. But while "nlen" is positive we are safe.
//-------------------------
while(len && nlen > 0)
{
span->v = (value_type)v.y();
span->a = (value_type)a.y();
v += subpixel_scale;
a += subpixel_scale;
nlen -= subpixel_scale;
++span;
--len;
}
// Ending part; checking for overflow.
// Typically it's 1-2 pixels, but may be more in some cases.
//-------------------------
while(len)
{
vv = v.y();
va = a.y();
if(vv < 0) vv = 0; if(vv > lim) vv = lim;
if(va < 0) va = 0; if(va > lim) va = lim;
span->v = (value_type)vv;
span->a = (value_type)va;
v += subpixel_scale;
a += subpixel_scale;
++span;
--len;
}
}
private:
bool m_swap;
int m_y2;
gray_calc m_c1;
gray_calc m_c2;
gray_calc m_c3;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_GOURAUD_RGBA_INCLUDED
#define AGG_SPAN_GOURAUD_RGBA_INCLUDED
#include "agg_basics.h"
#include "agg_color_rgba.h"
#include "agg_dda_line.h"
#include "agg_span_gouraud.h"
namespace agg
{
//=======================================================span_gouraud_rgba
template<class ColorT> class span_gouraud_rgba : public span_gouraud<ColorT>
{
public:
typedef ColorT color_type;
typedef typename ColorT::value_type value_type;
typedef span_gouraud<color_type> base_type;
typedef typename base_type::coord_type coord_type;
enum subpixel_scale_e
{
subpixel_shift = 4,
subpixel_scale = 1 << subpixel_shift
};
private:
//--------------------------------------------------------------------
struct rgba_calc
{
void init(const coord_type& c1, const coord_type& c2)
{
m_x1 = c1.x - 0.5;
m_y1 = c1.y - 0.5;
m_dx = c2.x - c1.x;
double dy = c2.y - c1.y;
m_1dy = (dy < 1e-5) ? 1e5 : 1.0 / dy;
m_r1 = c1.color.r;
m_g1 = c1.color.g;
m_b1 = c1.color.b;
m_a1 = c1.color.a;
m_dr = c2.color.r - m_r1;
m_dg = c2.color.g - m_g1;
m_db = c2.color.b - m_b1;
m_da = c2.color.a - m_a1;
}
void calc(double y)
{
double k = (y - m_y1) * m_1dy;
if(k < 0.0) k = 0.0;
if(k > 1.0) k = 1.0;
m_r = m_r1 + iround(m_dr * k);
m_g = m_g1 + iround(m_dg * k);
m_b = m_b1 + iround(m_db * k);
m_a = m_a1 + iround(m_da * k);
m_x = iround((m_x1 + m_dx * k) * subpixel_scale);
}
double m_x1;
double m_y1;
double m_dx;
double m_1dy;
int m_r1;
int m_g1;
int m_b1;
int m_a1;
int m_dr;
int m_dg;
int m_db;
int m_da;
int m_r;
int m_g;
int m_b;
int m_a;
int m_x;
};
public:
//--------------------------------------------------------------------
span_gouraud_rgba() {}
span_gouraud_rgba(const color_type& c1,
const color_type& c2,
const color_type& c3,
double x1, double y1,
double x2, double y2,
double x3, double y3,
double d = 0) :
base_type(c1, c2, c3, x1, y1, x2, y2, x3, y3, d)
{}
//--------------------------------------------------------------------
void prepare()
{
coord_type coord[3];
base_type::arrange_vertices(coord);
m_y2 = int(coord[1].y);
m_swap = cross_product(coord[0].x, coord[0].y,
coord[2].x, coord[2].y,
coord[1].x, coord[1].y) < 0.0;
m_rgba1.init(coord[0], coord[2]);
m_rgba2.init(coord[0], coord[1]);
m_rgba3.init(coord[1], coord[2]);
}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
m_rgba1.calc(y);//(m_rgba1.m_1dy > 2) ? m_rgba1.m_y1 : y);
const rgba_calc* pc1 = &m_rgba1;
const rgba_calc* pc2 = &m_rgba2;
if(y <= m_y2)
{
// Bottom part of the triangle (first subtriangle)
//-------------------------
m_rgba2.calc(y + m_rgba2.m_1dy);
}
else
{
// Upper part (second subtriangle)
m_rgba3.calc(y - m_rgba3.m_1dy);
//-------------------------
pc2 = &m_rgba3;
}
if(m_swap)
{
// It means that the triangle is oriented clockwise,
// so that we need to swap the controlling structures
//-------------------------
const rgba_calc* t = pc2;
pc2 = pc1;
pc1 = t;
}
// Get the horizontal length with subpixel accuracy
// and protect it from division by zero
//-------------------------
int nlen = abs(pc2->m_x - pc1->m_x);
if(nlen <= 0) nlen = 1;
dda_line_interpolator<14> r(pc1->m_r, pc2->m_r, nlen);
dda_line_interpolator<14> g(pc1->m_g, pc2->m_g, nlen);
dda_line_interpolator<14> b(pc1->m_b, pc2->m_b, nlen);
dda_line_interpolator<14> a(pc1->m_a, pc2->m_a, nlen);
// Calculate the starting point of the gradient with subpixel
// accuracy and correct (roll back) the interpolators.
// This operation will also clip the beginning of the span
// if necessary.
//-------------------------
int start = pc1->m_x - (x << subpixel_shift);
r -= start;
g -= start;
b -= start;
a -= start;
nlen += start;
int vr, vg, vb, va;
enum lim_e { lim = color_type::base_mask };
// Beginning part of the span. Since we rolled back the
// interpolators, the color values may have overflow.
// So that, we render the beginning part with checking
// for overflow. It lasts until "start" is positive;
// typically it's 1-2 pixels, but may be more in some cases.
//-------------------------
while(len && start > 0)
{
vr = r.y();
vg = g.y();
vb = b.y();
va = a.y();
if(vr < 0) vr = 0; if(vr > lim) vr = lim;
if(vg < 0) vg = 0; if(vg > lim) vg = lim;
if(vb < 0) vb = 0; if(vb > lim) vb = lim;
if(va < 0) va = 0; if(va > lim) va = lim;
span->r = (value_type)vr;
span->g = (value_type)vg;
span->b = (value_type)vb;
span->a = (value_type)va;
r += subpixel_scale;
g += subpixel_scale;
b += subpixel_scale;
a += subpixel_scale;
nlen -= subpixel_scale;
start -= subpixel_scale;
++span;
--len;
}
// Middle part, no checking for overflow.
// Actual spans can be longer than the calculated length
// because of anti-aliasing, thus, the interpolators can
// overflow. But while "nlen" is positive we are safe.
//-------------------------
while(len && nlen > 0)
{
span->r = (value_type)r.y();
span->g = (value_type)g.y();
span->b = (value_type)b.y();
span->a = (value_type)a.y();
r += subpixel_scale;
g += subpixel_scale;
b += subpixel_scale;
a += subpixel_scale;
nlen -= subpixel_scale;
++span;
--len;
}
// Ending part; checking for overflow.
// Typically it's 1-2 pixels, but may be more in some cases.
//-------------------------
while(len)
{
vr = r.y();
vg = g.y();
vb = b.y();
va = a.y();
if(vr < 0) vr = 0; if(vr > lim) vr = lim;
if(vg < 0) vg = 0; if(vg > lim) vg = lim;
if(vb < 0) vb = 0; if(vb > lim) vb = lim;
if(va < 0) va = 0; if(va > lim) va = lim;
span->r = (value_type)vr;
span->g = (value_type)vg;
span->b = (value_type)vb;
span->a = (value_type)va;
r += subpixel_scale;
g += subpixel_scale;
b += subpixel_scale;
a += subpixel_scale;
++span;
--len;
}
}
private:
bool m_swap;
int m_y2;
rgba_calc m_rgba1;
rgba_calc m_rgba2;
rgba_calc m_rgba3;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_GRADIENT_INCLUDED
#define AGG_SPAN_GRADIENT_INCLUDED
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "agg_basics.h"
#include "agg_math.h"
#include "agg_array.h"
namespace agg
{
enum gradient_subpixel_scale_e
{
gradient_subpixel_shift = 4, //-----gradient_subpixel_shift
gradient_subpixel_scale = 1 << gradient_subpixel_shift, //-----gradient_subpixel_scale
gradient_subpixel_mask = gradient_subpixel_scale - 1 //-----gradient_subpixel_mask
};
//==========================================================span_gradient
template<class ColorT,
class Interpolator,
class GradientF,
class ColorF>
class span_gradient
{
public:
typedef Interpolator interpolator_type;
typedef ColorT color_type;
enum downscale_shift_e
{
downscale_shift = interpolator_type::subpixel_shift -
gradient_subpixel_shift
};
//--------------------------------------------------------------------
span_gradient() {}
//--------------------------------------------------------------------
span_gradient(interpolator_type& inter,
GradientF& gradient_function,
ColorF& color_function,
double d1, double d2) :
m_interpolator(&inter),
m_gradient_function(&gradient_function),
m_color_function(&color_function),
m_d1(iround(d1 * gradient_subpixel_scale)),
m_d2(iround(d2 * gradient_subpixel_scale))
{}
//--------------------------------------------------------------------
interpolator_type& interpolator() { return *m_interpolator; }
const GradientF& gradient_function() const { return *m_gradient_function; }
const ColorF& color_function() const { return *m_color_function; }
double d1() const { return double(m_d1) / gradient_subpixel_scale; }
double d2() const { return double(m_d2) / gradient_subpixel_scale; }
//--------------------------------------------------------------------
void interpolator(interpolator_type& i) { m_interpolator = &i; }
void gradient_function(GradientF& gf) { m_gradient_function = &gf; }
void color_function(ColorF& cf) { m_color_function = &cf; }
void d1(double v) { m_d1 = iround(v * gradient_subpixel_scale); }
void d2(double v) { m_d2 = iround(v * gradient_subpixel_scale); }
//--------------------------------------------------------------------
void prepare() {}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
int dd = m_d2 - m_d1;
if(dd < 1) dd = 1;
m_interpolator->begin(x+0.5, y+0.5, len);
do
{
m_interpolator->coordinates(&x, &y);
int d = m_gradient_function->calculate(x >> downscale_shift,
y >> downscale_shift, m_d2);
d = ((d - m_d1) * (int)m_color_function->size()) / dd;
if(d < 0) d = 0;
if(d >= (int)m_color_function->size()) d = m_color_function->size() - 1;
*span++ = (*m_color_function)[d];
++(*m_interpolator);
}
while(--len);
}
private:
interpolator_type* m_interpolator;
GradientF* m_gradient_function;
ColorF* m_color_function;
int m_d1;
int m_d2;
};
//=====================================================gradient_linear_color
template<class ColorT>
struct gradient_linear_color
{
typedef ColorT color_type;
gradient_linear_color() {}
gradient_linear_color(const color_type& c1, const color_type& c2,
unsigned size = 256) :
m_c1(c1), m_c2(c2), m_size(size)
// VFALCO 4/28/09
,m_mult(1/(double(size)-1))
// VFALCO
{}
unsigned size() const { return m_size; }
color_type operator [] (unsigned v) const
{
// VFALCO 4/28/09
//return m_c1.gradient(m_c2, double(v) / double(m_size - 1));
return m_c1.gradient(m_c2, double(v) * m_mult );
// VFALCO
}
void colors(const color_type& c1, const color_type& c2, unsigned size = 256)
{
m_c1 = c1;
m_c2 = c2;
m_size = size;
// VFALCO 4/28/09
m_mult=1/(double(size)-1);
// VFALCO
}
color_type m_c1;
color_type m_c2;
unsigned m_size;
// VFALCO 4/28/09
double m_mult;
// VFALCO
};
//==========================================================gradient_circle
class gradient_circle
{
// Actually the same as radial. Just for compatibility
public:
static AGG_INLINE int calculate(int x, int y, int)
{
return int(fast_sqrt(x*x + y*y));
}
};
//==========================================================gradient_radial
class gradient_radial
{
public:
static AGG_INLINE int calculate(int x, int y, int)
{
return int(fast_sqrt(x*x + y*y));
}
};
//========================================================gradient_radial_d
class gradient_radial_d
{
public:
static AGG_INLINE int calculate(int x, int y, int)
{
return uround(sqrt(double(x)*double(x) + double(y)*double(y)));
}
};
//====================================================gradient_radial_focus
class gradient_radial_focus
{
public:
//---------------------------------------------------------------------
gradient_radial_focus() :
m_r(100 * gradient_subpixel_scale),
m_fx(0),
m_fy(0)
{
update_values();
}
//---------------------------------------------------------------------
gradient_radial_focus(double r, double fx, double fy) :
m_r (iround(r * gradient_subpixel_scale)),
m_fx(iround(fx * gradient_subpixel_scale)),
m_fy(iround(fy * gradient_subpixel_scale))
{
update_values();
}
//---------------------------------------------------------------------
void init(double r, double fx, double fy)
{
m_r = iround(r * gradient_subpixel_scale);
m_fx = iround(fx * gradient_subpixel_scale);
m_fy = iround(fy * gradient_subpixel_scale);
update_values();
}
//---------------------------------------------------------------------
double radius() const { return double(m_r) / gradient_subpixel_scale; }
double focus_x() const { return double(m_fx) / gradient_subpixel_scale; }
double focus_y() const { return double(m_fy) / gradient_subpixel_scale; }
//---------------------------------------------------------------------
int calculate(int x, int y, int) const
{
double dx = x - m_fx;
double dy = y - m_fy;
double d2 = dx * m_fy - dy * m_fx;
double d3 = m_r2 * (dx * dx + dy * dy) - d2 * d2;
return iround((dx * m_fx + dy * m_fy + sqrt(fabs(d3))) * m_mul);
}
private:
//---------------------------------------------------------------------
void update_values()
{
// Calculate the invariant values. In case the focal center
// lies exactly on the gradient circle the divisor degenerates
// into zero. In this case we just move the focal center by
// one subpixel unit possibly in the direction to the origin (0,0)
// and calculate the values again.
//-------------------------
m_r2 = double(m_r) * double(m_r);
m_fx2 = double(m_fx) * double(m_fx);
m_fy2 = double(m_fy) * double(m_fy);
double d = (m_r2 - (m_fx2 + m_fy2));
if(d == 0)
{
if(m_fx) { if(m_fx < 0) ++m_fx; else --m_fx; }
if(m_fy) { if(m_fy < 0) ++m_fy; else --m_fy; }
m_fx2 = double(m_fx) * double(m_fx);
m_fy2 = double(m_fy) * double(m_fy);
d = (m_r2 - (m_fx2 + m_fy2));
}
m_mul = m_r / d;
}
int m_r;
int m_fx;
int m_fy;
double m_r2;
double m_fx2;
double m_fy2;
double m_mul;
};
//==============================================================gradient_x
class gradient_x
{
public:
static int calculate(int x, int, int) { return x; }
};
//==============================================================gradient_y
class gradient_y
{
public:
static int calculate(int, int y, int) { return y; }
};
//========================================================gradient_diamond
class gradient_diamond
{
public:
static AGG_INLINE int calculate(int x, int y, int)
{
int ax = abs(x);
int ay = abs(y);
return ax > ay ? ax : ay;
}
};
//=============================================================gradient_xy
class gradient_xy
{
public:
static AGG_INLINE int calculate(int x, int y, int d)
{
return abs(x) * abs(y) / d;
}
};
//========================================================gradient_sqrt_xy
class gradient_sqrt_xy
{
public:
static AGG_INLINE int calculate(int x, int y, int)
{
return fast_sqrt(abs(x) * abs(y));
}
};
//==========================================================gradient_conic
class gradient_conic
{
public:
static AGG_INLINE int calculate(int x, int y, int d)
{
return uround(fabs(atan2(double(y), double(x))) * double(d) / pi);
}
};
//=================================================gradient_repeat_adaptor
template<class GradientF> class gradient_repeat_adaptor
{
public:
gradient_repeat_adaptor(const GradientF& gradient) :
m_gradient(&gradient) {}
AGG_INLINE int calculate(int x, int y, int d) const
{
int ret = m_gradient->calculate(x, y, d) % d;
if(ret < 0) ret += d;
return ret;
}
private:
const GradientF* m_gradient;
};
//================================================gradient_reflect_adaptor
template<class GradientF> class gradient_reflect_adaptor
{
public:
gradient_reflect_adaptor(const GradientF& gradient) :
m_gradient(&gradient) {}
AGG_INLINE int calculate(int x, int y, int d) const
{
int d2 = d << 1;
int ret = m_gradient->calculate(x, y, d) % d2;
if(ret < 0) ret += d2;
if(ret >= d) ret = d2 - ret;
return ret;
}
private:
const GradientF* m_gradient;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_GRADIENT_ALPHA_INCLUDED
#define AGG_SPAN_GRADIENT_ALPHA_INCLUDED
#include "agg_span_gradient.h"
namespace agg
{
//======================================================span_gradient_alpha
template<class ColorT,
class Interpolator,
class GradientF,
class AlphaF>
class span_gradient_alpha
{
public:
typedef Interpolator interpolator_type;
typedef ColorT color_type;
typedef typename color_type::value_type alpha_type;
enum downscale_shift_e
{
downscale_shift = interpolator_type::subpixel_shift - gradient_subpixel_shift
};
//--------------------------------------------------------------------
span_gradient_alpha() {}
//--------------------------------------------------------------------
span_gradient_alpha(interpolator_type& inter,
GradientF& gradient_function,
AlphaF& alpha_function,
double d1, double d2) :
m_interpolator(&inter),
m_gradient_function(&gradient_function),
m_alpha_function(&alpha_function),
m_d1(iround(d1 * gradient_subpixel_scale)),
m_d2(iround(d2 * gradient_subpixel_scale))
{}
//--------------------------------------------------------------------
interpolator_type& interpolator() { return *m_interpolator; }
const GradientF& gradient_function() const { return *m_gradient_function; }
const AlphaF& alpha_function() const { return *m_alpha_function; }
double d1() const { return double(m_d1) / gradient_subpixel_scale; }
double d2() const { return double(m_d2) / gradient_subpixel_scale; }
//--------------------------------------------------------------------
void interpolator(interpolator_type& i) { m_interpolator = &i; }
void gradient_function(const GradientF& gf) { m_gradient_function = &gf; }
void alpha_function(const AlphaF& af) { m_alpha_function = &af; }
void d1(double v) { m_d1 = iround(v * gradient_subpixel_scale); }
void d2(double v) { m_d2 = iround(v * gradient_subpixel_scale); }
//--------------------------------------------------------------------
void prepare() {}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
int dd = m_d2 - m_d1;
if(dd < 1) dd = 1;
m_interpolator->begin(x+0.5, y+0.5, len);
do
{
m_interpolator->coordinates(&x, &y);
int d = m_gradient_function->calculate(x >> downscale_shift,
y >> downscale_shift, m_d2);
d = ((d - m_d1) * (int)m_alpha_function->size()) / dd;
if(d < 0) d = 0;
if(d >= (int)m_alpha_function->size()) d = m_alpha_function->size() - 1;
span->a = (*m_alpha_function)[d];
++span;
++(*m_interpolator);
}
while(--len);
}
private:
interpolator_type* m_interpolator;
GradientF* m_gradient_function;
AlphaF* m_alpha_function;
int m_d1;
int m_d2;
};
//=======================================================gradient_alpha_x
template<class ColorT> struct gradient_alpha_x
{
typedef typename ColorT::value_type alpha_type;
alpha_type operator [] (alpha_type x) const { return x; }
};
//====================================================gradient_alpha_x_u8
struct gradient_alpha_x_u8
{
typedef int8u alpha_type;
alpha_type operator [] (alpha_type x) const { return x; }
};
//==========================================gradient_alpha_one_munus_x_u8
struct gradient_alpha_one_munus_x_u8
{
typedef int8u alpha_type;
alpha_type operator [] (alpha_type x) const { return 255-x; }
};
}
#endif

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xs/src/agg/agg_span_gradient_contour.h
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//----------------------------------------------------------------------------
// AGG Contribution Pack - Gradients 1 (AGG CP - Gradients 1)
// http://milan.marusinec.sk/aggcp
//
// For Anti-Grain Geometry - Version 2.4
// http://www.antigrain.org
//
// Contribution Created By:
// Milan Marusinec alias Milano
// milan@marusinec.sk
// Copyright (c) 2007-2008
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
// [History] -----------------------------------------------------------------
//
// 02.02.2008-Milano: Ported from Object Pascal code of AggPas
//
#ifndef AGG_SPAN_GRADIENT_CONTOUR_INCLUDED
#define AGG_SPAN_GRADIENT_CONTOUR_INCLUDED
#include "agg_basics.h"
#include "agg_trans_affine.h"
#include "agg_path_storage.h"
#include "agg_pixfmt_gray.h"
#include "agg_conv_transform.h"
#include "agg_conv_curve.h"
#include "agg_bounding_rect.h"
#include "agg_renderer_base.h"
#include "agg_renderer_primitives.h"
#include "agg_rasterizer_outline.h"
#include "agg_span_gradient.h"
#include <float.h>
namespace agg
{
//==========================================================gradient_contour
class gradient_contour
{
private:
int8u* m_buffer;
int m_width;
int m_height;
int m_frame;
double m_d1;
double m_d2;
public:
gradient_contour() :
m_buffer(NULL),
m_width(0),
m_height(0),
m_frame(10),
m_d1(0),
m_d2(100)
{
}
gradient_contour(double d1, double d2) :
m_buffer(NULL),
m_width(0),
m_height(0),
m_frame(10),
m_d1(d1),
m_d2(d2)
{
}
~gradient_contour()
{
if (m_buffer)
{
delete [] m_buffer;
}
}
int8u* contour_create(path_storage* ps );
int contour_width() { return m_width; }
int contour_height() { return m_height; }
void d1(double d ) { m_d1 = d; }
void d2(double d ) { m_d2 = d; }
void frame(int f ) { m_frame = f; }
int frame() { return m_frame; }
int calculate(int x, int y, int d) const
{
if (m_buffer)
{
int px = x >> agg::gradient_subpixel_shift;
int py = y >> agg::gradient_subpixel_shift;
px %= m_width;
if (px < 0)
{
px += m_width;
}
py %= m_height;
if (py < 0 )
{
py += m_height;
}
return iround(m_buffer[py * m_width + px ] * (m_d2 / 256 ) + m_d1 ) << gradient_subpixel_shift;
}
else
{
return 0;
}
}
};
static AGG_INLINE int square(int x ) { return x * x; }
// DT algorithm by: Pedro Felzenszwalb
void dt(float* spanf, float* spang, float* spanr, int* spann ,int length )
{
int k = 0;
float s;
spann[0 ] = 0;
spang[0 ] = -FLT_MAX;
spang[1 ] = FLT_MAX;
for (int q = 1; q <= length - 1; q++)
{
s = ((spanf[q ] + square(q ) ) - (spanf[spann[k ] ] + square(spann[k ] ) ) ) / (2 * q - 2 * spann[k ] );
while (s <= spang[k ])
{
k--;
s = ((spanf[q ] + square(q ) ) - (spanf[spann[k ] ] + square(spann[k ] ) ) ) / (2 * q - 2 * spann[k ] );
}
k++;
spann[k ] = q;
spang[k ] = s;
spang[k + 1 ] = FLT_MAX;
}
k = 0;
for (int q = 0; q <= length - 1; q++)
{
while (spang[k + 1 ] < q )
{
k++;
}
spanr[q ] = square(q - spann[k ] ) + spanf[spann[k ] ];
}
}
// DT algorithm by: Pedro Felzenszwalb
int8u* gradient_contour::contour_create(path_storage* ps )
{
int8u* result = NULL;
if (ps)
{
// I. Render Black And White NonAA Stroke of the Path
// Path Bounding Box + Some Frame Space Around [configurable]
agg::conv_curve<agg::path_storage> conv(*ps);
double x1, y1, x2, y2;
if (agg::bounding_rect_single(conv ,0 ,&x1 ,&y1 ,&x2 ,&y2 ))
{
// Create BW Rendering Surface
int width = int(ceil(x2 - x1 ) ) + m_frame * 2 + 1;
int height = int(ceil(y2 - y1 ) ) + m_frame * 2 + 1;
int8u* buffer = new int8u[width * height];
if (buffer)
{
memset(buffer ,255 ,width * height );
// Setup VG Engine & Render
agg::rendering_buffer rb;
rb.attach(buffer ,width ,height ,width );
agg::pixfmt_gray8 pf(rb);
agg::renderer_base<agg::pixfmt_gray8> renb(pf );
agg::renderer_primitives<agg::renderer_base<agg::pixfmt_gray8> > prim(renb );
agg::rasterizer_outline<renderer_primitives<agg::renderer_base<agg::pixfmt_gray8> > > ras(prim );
agg::trans_affine mtx;
mtx *= agg::trans_affine_translation(-x1 + m_frame, -y1 + m_frame );
agg::conv_transform<agg::conv_curve<agg::path_storage> > trans(conv ,mtx );
prim.line_color(agg::rgba8(0 ,0 ,0 ,255 ) );
ras.add_path(trans );
// II. Distance Transform
// Create Float Buffer + 0 vs infinity assignment
float* image = new float[width * height];
if (image)
{
for (int y = 0, l = 0; y < height; y++ )
{
for (int x = 0; x < width; x++, l++ )
{
if (buffer[l ] == 0)
{
image[l ] = 0.0;
}
else
{
image[l ] = FLT_MAX;
}
}
}
// DT of 2d
// SubBuff<float> max width,height
int length = width;
if (height > length)
{
length = height;
}
float* spanf = new float[length];
float* spang = new float[length + 1];
float* spanr = new float[length];
int* spann = new int[length];
if ((spanf) && (spang) && (spanr) && (spann))
{
// Transform along columns
for (int x = 0; x < width; x++ )
{
for (int y = 0; y < height; y++ )
{
spanf[y] = image[y * width + x];
}
// DT of 1d
dt(spanf ,spang ,spanr ,spann ,height );
for (int y = 0; y < height; y++ )
{
image[y * width + x] = spanr[y];
}
}
// Transform along rows
for (int y = 0; y < height; y++ )
{
for (int x = 0; x < width; x++ )
{
spanf[x] = image[y * width + x];
}
// DT of 1d
dt(spanf ,spang ,spanr ,spann ,width );
for (int x = 0; x < width; x++ )
{
image[y * width + x] = spanr[x];
}
}
// Take Square Roots, Min & Max
float min = sqrt(image[0] );
float max = min;
for (int y = 0, l = 0; y < height; y++ )
{
for (int x = 0; x < width; x++, l++ )
{
image[l] = sqrt(image[l]);
if (min > image[l])
{
min = image[l];
}
if (max < image[l])
{
max = image[l];
}
}
}
// III. Convert To Grayscale
if (min == max)
{
memset(buffer ,0 ,width * height );
}
else
{
float scale = 255 / (max - min );
for (int y = 0, l = 0; y < height; y++ )
{
for (int x = 0; x < width; x++ ,l++ )
{
buffer[l] = int8u(int((image[l] - min ) * scale ));
}
}
}
// OK
if (m_buffer)
{
delete [] m_buffer;
}
m_buffer = buffer;
m_width = width;
m_height = height;
buffer = NULL;
result = m_buffer;
}
if (spanf) { delete [] spanf; }
if (spang) { delete [] spang; }
if (spanr) { delete [] spanr; }
if (spann) { delete [] spann; }
delete [] image;
}
}
if (buffer)
{
delete [] buffer;
}
}
}
return result;
}
}
#endif

188
xs/src/agg/agg_span_gradient_image.h
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//----------------------------------------------------------------------------
// AGG Contribution Pack - Gradients 1 (AGG CP - Gradients 1)
// http://milan.marusinec.sk/aggcp
//
// For Anti-Grain Geometry - Version 2.4
// http://www.antigrain.org
//
// Contribution Created By:
// Milan Marusinec alias Milano
// milan@marusinec.sk
// Copyright (c) 2007-2008
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
// [History] -----------------------------------------------------------------
//
// 03.02.2008-Milano: Ported from Object Pascal code of AggPas
//
#ifndef AGG_SPAN_GRADIENT_IMAGE_INCLUDED
#define AGG_SPAN_GRADIENT_IMAGE_INCLUDED
#include "agg_basics.h"
#include "agg_span_gradient.h"
#include "agg_color_rgba.h"
#include "agg_rendering_buffer.h"
#include "agg_pixfmt_rgba.h"
namespace agg
{
//==========================================================one_color_function
template<class ColorT> class one_color_function
{
public:
typedef ColorT color_type;
color_type m_color;
one_color_function() :
m_color()
{
}
static unsigned size() { return 1; }
const color_type& operator [] (unsigned i) const
{
return m_color;
}
color_type* operator [] (unsigned i)
{
return &m_color;
}
};
//==========================================================gradient_image
template<class ColorT> class gradient_image
{
private:
//------------ fields
typedef ColorT color_type;
typedef agg::pixfmt_rgba32 pixfmt_type;
agg::rgba8* m_buffer;
int m_alocdx;
int m_alocdy;
int m_width;
int m_height;
color_type* m_color;
one_color_function<color_type> m_color_function;
public:
gradient_image() :
m_color_function(),
m_buffer(NULL),
m_alocdx(0),
m_alocdy(0),
m_width(0),
m_height(0)
{
m_color = m_color_function[0 ];
}
~gradient_image()
{
if (m_buffer) { delete [] m_buffer; }
}
void* image_create(int width, int height )
{
void* result = NULL;
if (width > m_alocdx || height > m_alocdy)
{
if (m_buffer) { delete [] m_buffer; }
m_buffer = NULL;
m_buffer = new agg::rgba8[width * height];
if (m_buffer)
{
m_alocdx = width;
m_alocdy = height;
}
else
{
m_alocdx = 0;
m_alocdy = 0;
};
};
if (m_buffer)
{
m_width = width;
m_height = height;
for (int rows = 0; rows < height; rows++)
{
agg::rgba8* row = &m_buffer[rows * m_alocdx ];
memset(row ,0 ,m_width * 4 );
};
result = m_buffer;
};
return result;
}
void* image_buffer() { return m_buffer; }
int image_width() { return m_width; }
int image_height() { return m_height; }
int image_stride() { return m_alocdx * 4; }
int calculate(int x, int y, int d) const
{
if (m_buffer)
{
int px = x >> agg::gradient_subpixel_shift;
int py = y >> agg::gradient_subpixel_shift;
px %= m_width;
if (px < 0)
{
px += m_width;
}
py %= m_height;
if (py < 0 )
{
py += m_height;
}
rgba8* pixel = &m_buffer[py * m_alocdx + px ];
m_color->r = pixel->r;
m_color->g = pixel->g;
m_color->b = pixel->b;
m_color->a = pixel->a;
}
else
{
m_color->r = 0;
m_color->g = 0;
m_color->b = 0;
m_color->a = 0;
}
return 0;
}
const one_color_function<color_type>& color_function() const
{
return m_color_function;
}
};
}
#endif

247
xs/src/agg/agg_span_image_filter.h
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@ -1,247 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Image transformations with filtering. Span generator base class
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_IMAGE_FILTER_INCLUDED
#define AGG_SPAN_IMAGE_FILTER_INCLUDED
#include "agg_basics.h"
#include "agg_image_filters.h"
#include "agg_span_interpolator_linear.h"
namespace agg
{
//-------------------------------------------------------span_image_filter
template<class Source, class Interpolator> class span_image_filter
{
public:
typedef Source source_type;
typedef Interpolator interpolator_type;
//--------------------------------------------------------------------
span_image_filter() {}
span_image_filter(source_type& src,
interpolator_type& interpolator,
image_filter_lut* filter) :
m_src(&src),
m_interpolator(&interpolator),
m_filter(filter),
m_dx_dbl(0.5),
m_dy_dbl(0.5),
m_dx_int(image_subpixel_scale / 2),
m_dy_int(image_subpixel_scale / 2)
{}
void attach(source_type& v) { m_src = &v; }
//--------------------------------------------------------------------
source_type& source() { return *m_src; }
const source_type& source() const { return *m_src; }
const image_filter_lut& filter() const { return *m_filter; }
int filter_dx_int() const { return m_dx_int; }
int filter_dy_int() const { return m_dy_int; }
double filter_dx_dbl() const { return m_dx_dbl; }
double filter_dy_dbl() const { return m_dy_dbl; }
//--------------------------------------------------------------------
void interpolator(interpolator_type& v) { m_interpolator = &v; }
void filter(image_filter_lut& v) { m_filter = &v; }
void filter_offset(double dx, double dy)
{
m_dx_dbl = dx;
m_dy_dbl = dy;
m_dx_int = iround(dx * image_subpixel_scale);
m_dy_int = iround(dy * image_subpixel_scale);
}
void filter_offset(double d) { filter_offset(d, d); }
//--------------------------------------------------------------------
interpolator_type& interpolator() { return *m_interpolator; }
//--------------------------------------------------------------------
void prepare() {}
//--------------------------------------------------------------------
private:
source_type* m_src;
interpolator_type* m_interpolator;
image_filter_lut* m_filter;
double m_dx_dbl;
double m_dy_dbl;
unsigned m_dx_int;
unsigned m_dy_int;
};
//==============================================span_image_resample_affine
template<class Source>
class span_image_resample_affine :
public span_image_filter<Source, span_interpolator_linear<trans_affine> >
{
public:
typedef Source source_type;
typedef span_interpolator_linear<trans_affine> interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
//--------------------------------------------------------------------
span_image_resample_affine() :
m_scale_limit(200.0),
m_blur_x(1.0),
m_blur_y(1.0)
{}
//--------------------------------------------------------------------
span_image_resample_affine(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter),
m_scale_limit(200.0),
m_blur_x(1.0),
m_blur_y(1.0)
{}
//--------------------------------------------------------------------
int scale_limit() const { return uround(m_scale_limit); }
void scale_limit(int v) { m_scale_limit = v; }
//--------------------------------------------------------------------
double blur_x() const { return m_blur_x; }
double blur_y() const { return m_blur_y; }
void blur_x(double v) { m_blur_x = v; }
void blur_y(double v) { m_blur_y = v; }
void blur(double v) { m_blur_x = m_blur_y = v; }
//--------------------------------------------------------------------
void prepare()
{
double scale_x;
double scale_y;
base_type::interpolator().transformer().scaling_abs(&scale_x, &scale_y);
double scale_xy = scale_x * scale_y;
if (scale_xy > m_scale_limit)
{
scale_x = scale_x * m_scale_limit / scale_xy;
scale_y = scale_y * m_scale_limit / scale_xy;
}
if(scale_x < 1) scale_x = 1;
if(scale_y < 1) scale_y = 1;
if(scale_x > m_scale_limit) scale_x = m_scale_limit;
if(scale_y > m_scale_limit) scale_y = m_scale_limit;
scale_x *= m_blur_x;
scale_y *= m_blur_y;
if(scale_x < 1) scale_x = 1;
if(scale_y < 1) scale_y = 1;
m_rx = uround( scale_x * double(image_subpixel_scale));
m_rx_inv = uround(1.0/scale_x * double(image_subpixel_scale));
m_ry = uround( scale_y * double(image_subpixel_scale));
m_ry_inv = uround(1.0/scale_y * double(image_subpixel_scale));
}
protected:
int m_rx;
int m_ry;
int m_rx_inv;
int m_ry_inv;
private:
double m_scale_limit;
double m_blur_x;
double m_blur_y;
};
//=====================================================span_image_resample
template<class Source, class Interpolator>
class span_image_resample :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
//--------------------------------------------------------------------
span_image_resample() :
m_scale_limit(20),
m_blur_x(image_subpixel_scale),
m_blur_y(image_subpixel_scale)
{}
//--------------------------------------------------------------------
span_image_resample(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter),
m_scale_limit(20),
m_blur_x(image_subpixel_scale),
m_blur_y(image_subpixel_scale)
{}
//--------------------------------------------------------------------
int scale_limit() const { return m_scale_limit; }
void scale_limit(int v) { m_scale_limit = v; }
//--------------------------------------------------------------------
double blur_x() const { return double(m_blur_x) / double(image_subpixel_scale); }
double blur_y() const { return double(m_blur_y) / double(image_subpixel_scale); }
void blur_x(double v) { m_blur_x = uround(v * double(image_subpixel_scale)); }
void blur_y(double v) { m_blur_y = uround(v * double(image_subpixel_scale)); }
void blur(double v) { m_blur_x =
m_blur_y = uround(v * double(image_subpixel_scale)); }
protected:
AGG_INLINE void adjust_scale(int* rx, int* ry)
{
if(*rx < image_subpixel_scale) *rx = image_subpixel_scale;
if(*ry < image_subpixel_scale) *ry = image_subpixel_scale;
if(*rx > image_subpixel_scale * m_scale_limit)
{
*rx = image_subpixel_scale * m_scale_limit;
}
if(*ry > image_subpixel_scale * m_scale_limit)
{
*ry = image_subpixel_scale * m_scale_limit;
}
*rx = (*rx * m_blur_x) >> image_subpixel_shift;
*ry = (*ry * m_blur_y) >> image_subpixel_shift;
if(*rx < image_subpixel_scale) *rx = image_subpixel_scale;
if(*ry < image_subpixel_scale) *ry = image_subpixel_scale;
}
int m_scale_limit;
int m_blur_x;
int m_blur_y;
};
}
#endif

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xs/src/agg/agg_span_image_filter_gray.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_IMAGE_FILTER_GRAY_INCLUDED
#define AGG_SPAN_IMAGE_FILTER_GRAY_INCLUDED
#include "agg_basics.h"
#include "agg_color_gray.h"
#include "agg_span_image_filter.h"
namespace agg
{
//==============================================span_image_filter_gray_nn
template<class Source, class Interpolator>
class span_image_filter_gray_nn :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_gray_nn() {}
span_image_filter_gray_nn(source_type& src,
interpolator_type& inter) :
base_type(src, inter, 0)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
do
{
base_type::interpolator().coordinates(&x, &y);
span->v = *(const value_type*)
base_type::source().span(x >> image_subpixel_shift,
y >> image_subpixel_shift,
1);
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//=========================================span_image_filter_gray_bilinear
template<class Source, class Interpolator>
class span_image_filter_gray_bilinear :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_gray_bilinear() {}
span_image_filter_gray_bilinear(source_type& src,
interpolator_type& inter) :
base_type(src, inter, 0)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg;
const value_type *fg_ptr;
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
fg = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().span(x_lr, y_lr, 2);
fg += *fg_ptr * (image_subpixel_scale - x_hr) * (image_subpixel_scale - y_hr);
fg_ptr = (const value_type*)base_type::source().next_x();
fg += *fg_ptr * x_hr * (image_subpixel_scale - y_hr);
fg_ptr = (const value_type*)base_type::source().next_y();
fg += *fg_ptr * (image_subpixel_scale - x_hr) * y_hr;
fg_ptr = (const value_type*)base_type::source().next_x();
fg += *fg_ptr * x_hr * y_hr;
span->v = color_type::downshift(fg, image_subpixel_shift * 2);
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//====================================span_image_filter_gray_bilinear_clip
template<class Source, class Interpolator>
class span_image_filter_gray_bilinear_clip :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_gray_bilinear_clip() {}
span_image_filter_gray_bilinear_clip(source_type& src,
const color_type& back_color,
interpolator_type& inter) :
base_type(src, inter, 0),
m_back_color(back_color)
{}
const color_type& background_color() const { return m_back_color; }
void background_color(const color_type& v) { m_back_color = v; }
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg;
long_type src_alpha;
value_type back_v = m_back_color.v;
value_type back_a = m_back_color.a;
const value_type *fg_ptr;
int maxx = base_type::source().width() - 1;
int maxy = base_type::source().height() - 1;
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr < maxx && y_lr < maxy)
{
fg = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().row_ptr(y_lr) + x_lr;
fg += *fg_ptr++ * (image_subpixel_scale - x_hr) * (image_subpixel_scale - y_hr);
fg += *fg_ptr++ * (image_subpixel_scale - y_hr) * x_hr;
++y_lr;
fg_ptr = (const value_type*)base_type::source().row_ptr(y_lr) + x_lr;
fg += *fg_ptr++ * (image_subpixel_scale - x_hr) * y_hr;
fg += *fg_ptr++ * x_hr * y_hr;
fg = color_type::downshift(fg, image_subpixel_shift * 2);
src_alpha = color_type::full_value();
}
else
{
unsigned weight;
if(x_lr < -1 || y_lr < -1 ||
x_lr > maxx || y_lr > maxy)
{
fg = back_v;
src_alpha = back_a;
}
else
{
fg = src_alpha = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg += weight *
*((const value_type*)base_type::source().row_ptr(y_lr) + x_lr);
src_alpha += weight * color_type::full_value();
}
else
{
fg += back_v * weight;
src_alpha += back_a * weight;
}
x_lr++;
weight = x_hr * (image_subpixel_scale - y_hr);
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg += weight *
*((const value_type*)base_type::source().row_ptr(y_lr) + x_lr);
src_alpha += weight * color_type::full_value();
}
else
{
fg += back_v * weight;
src_alpha += back_a * weight;
}
x_lr--;
y_lr++;
weight = (image_subpixel_scale - x_hr) * y_hr;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg += weight *
*((const value_type*)base_type::source().row_ptr(y_lr) + x_lr);
src_alpha += weight * color_type::full_value();
}
else
{
fg += back_v * weight;
src_alpha += back_a * weight;
}
x_lr++;
weight = x_hr * y_hr;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg += weight *
*((const value_type*)base_type::source().row_ptr(y_lr) + x_lr);
src_alpha += weight * color_type::full_value();
}
else
{
fg += back_v * weight;
src_alpha += back_a * weight;
}
fg = color_type::downshift(fg, image_subpixel_shift * 2);
src_alpha = color_type::downshift(src_alpha, image_subpixel_shift * 2);
}
}
span->v = (value_type)fg;
span->a = (value_type)src_alpha;
++span;
++base_type::interpolator();
} while(--len);
}
private:
color_type m_back_color;
};
//==============================================span_image_filter_gray_2x2
template<class Source, class Interpolator>
class span_image_filter_gray_2x2 :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_gray_2x2() {}
span_image_filter_gray_2x2(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg;
const value_type *fg_ptr;
const int16* weight_array = base_type::filter().weight_array() +
((base_type::filter().diameter()/2 - 1) <<
image_subpixel_shift);
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
fg = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().span(x_lr, y_lr, 2);
weight = (weight_array[x_hr + image_subpixel_scale] *
weight_array[y_hr + image_subpixel_scale] +
image_filter_scale / 2) >>
image_filter_shift;
fg += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = (weight_array[x_hr] *
weight_array[y_hr + image_subpixel_scale] +
image_filter_scale / 2) >>
image_filter_shift;
fg += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_y();
weight = (weight_array[x_hr + image_subpixel_scale] *
weight_array[y_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = (weight_array[x_hr] *
weight_array[y_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg += weight * *fg_ptr;
fg >>= image_filter_shift;
if(fg > color_type::full_value()) fg = color_type::full_value();
span->v = (value_type)fg;
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//==================================================span_image_filter_gray
template<class Source, class Interpolator>
class span_image_filter_gray :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_gray() {}
span_image_filter_gray(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg;
const value_type *fg_ptr;
unsigned diameter = base_type::filter().diameter();
int start = base_type::filter().start();
const int16* weight_array = base_type::filter().weight_array();
int x_count;
int weight_y;
do
{
base_type::interpolator().coordinates(&x, &y);
x -= base_type::filter_dx_int();
y -= base_type::filter_dy_int();
int x_hr = x;
int y_hr = y;
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
fg = 0;
int x_fract = x_hr & image_subpixel_mask;
unsigned y_count = diameter;
y_hr = image_subpixel_mask - (y_hr & image_subpixel_mask);
fg_ptr = (const value_type*)base_type::source().span(x_lr + start,
y_lr + start,
diameter);
for(;;)
{
x_count = diameter;
weight_y = weight_array[y_hr];
x_hr = image_subpixel_mask - x_fract;
for(;;)
{
fg += *fg_ptr *
((weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
image_filter_shift);
if(--x_count == 0) break;
x_hr += image_subpixel_scale;
fg_ptr = (const value_type*)base_type::source().next_x();
}
if(--y_count == 0) break;
y_hr += image_subpixel_scale;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg >>= image_filter_shift;
if(fg < 0) fg = 0;
if(fg > color_type::full_value()) fg = color_type::full_value();
span->v = (value_type)fg;
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//=========================================span_image_resample_gray_affine
template<class Source>
class span_image_resample_gray_affine :
public span_image_resample_affine<Source>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef span_image_resample_affine<source_type> base_type;
typedef typename base_type::interpolator_type interpolator_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
downscale_shift = image_filter_shift
};
//--------------------------------------------------------------------
span_image_resample_gray_affine() {}
span_image_resample_gray_affine(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg;
int diameter = base_type::filter().diameter();
int filter_scale = diameter << image_subpixel_shift;
int radius_x = (diameter * base_type::m_rx) >> 1;
int radius_y = (diameter * base_type::m_ry) >> 1;
int len_x_lr =
(diameter * base_type::m_rx + image_subpixel_mask) >>
image_subpixel_shift;
const int16* weight_array = base_type::filter().weight_array();
do
{
base_type::interpolator().coordinates(&x, &y);
x += base_type::filter_dx_int() - radius_x;
y += base_type::filter_dy_int() - radius_y;
fg = 0;
int y_lr = y >> image_subpixel_shift;
int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
base_type::m_ry_inv) >>
image_subpixel_shift;
int total_weight = 0;
int x_lr = x >> image_subpixel_shift;
int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
base_type::m_rx_inv) >>
image_subpixel_shift;
int x_hr2 = x_hr;
const value_type* fg_ptr =
(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
for(;;)
{
int weight_y = weight_array[y_hr];
x_hr = x_hr2;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
downscale_shift;
fg += *fg_ptr * weight;
total_weight += weight;
x_hr += base_type::m_rx_inv;
if(x_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_x();
}
y_hr += base_type::m_ry_inv;
if(y_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg /= total_weight;
if(fg < 0) fg = 0;
if(fg > color_type::full_value()) fg = color_type::full_value();
span->v = (value_type)fg;
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//================================================span_image_resample_gray
template<class Source, class Interpolator>
class span_image_resample_gray :
public span_image_resample<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef Interpolator interpolator_type;
typedef span_image_resample<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
downscale_shift = image_filter_shift
};
//--------------------------------------------------------------------
span_image_resample_gray() {}
span_image_resample_gray(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg;
int diameter = base_type::filter().diameter();
int filter_scale = diameter << image_subpixel_shift;
const int16* weight_array = base_type::filter().weight_array();
do
{
int rx;
int ry;
int rx_inv = image_subpixel_scale;
int ry_inv = image_subpixel_scale;
base_type::interpolator().coordinates(&x, &y);
base_type::interpolator().local_scale(&rx, &ry);
base_type::adjust_scale(&rx, &ry);
rx_inv = image_subpixel_scale * image_subpixel_scale / rx;
ry_inv = image_subpixel_scale * image_subpixel_scale / ry;
int radius_x = (diameter * rx) >> 1;
int radius_y = (diameter * ry) >> 1;
int len_x_lr =
(diameter * rx + image_subpixel_mask) >>
image_subpixel_shift;
x += base_type::filter_dx_int() - radius_x;
y += base_type::filter_dy_int() - radius_y;
fg = 0;
int y_lr = y >> image_subpixel_shift;
int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
ry_inv) >>
image_subpixel_shift;
int total_weight = 0;
int x_lr = x >> image_subpixel_shift;
int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
rx_inv) >>
image_subpixel_shift;
int x_hr2 = x_hr;
const value_type* fg_ptr =
(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
for(;;)
{
int weight_y = weight_array[y_hr];
x_hr = x_hr2;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
downscale_shift;
fg += *fg_ptr * weight;
total_weight += weight;
x_hr += rx_inv;
if(x_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_x();
}
y_hr += ry_inv;
if(y_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg /= total_weight;
if(fg < 0) fg = 0;
if(fg > color_type::full_value()) fg = color_type::full_value();
span->v = (value_type)fg;
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
}
#endif

861
xs/src/agg/agg_span_image_filter_rgb.h
View file

@ -1,861 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_IMAGE_FILTER_RGB_INCLUDED
#define AGG_SPAN_IMAGE_FILTER_RGB_INCLUDED
#include "agg_basics.h"
#include "agg_color_rgba.h"
#include "agg_span_image_filter.h"
namespace agg
{
//===============================================span_image_filter_rgb_nn
template<class Source, class Interpolator>
class span_image_filter_rgb_nn :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgb_nn() {}
span_image_filter_rgb_nn(source_type& src,
interpolator_type& inter) :
base_type(src, inter, 0)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
do
{
base_type::interpolator().coordinates(&x, &y);
const value_type* fg_ptr = (const value_type*)
base_type::source().span(x >> image_subpixel_shift,
y >> image_subpixel_shift,
1);
span->r = fg_ptr[order_type::R];
span->g = fg_ptr[order_type::G];
span->b = fg_ptr[order_type::B];
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//==========================================span_image_filter_rgb_bilinear
template<class Source, class Interpolator>
class span_image_filter_rgb_bilinear :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgb_bilinear() {}
span_image_filter_rgb_bilinear(source_type& src,
interpolator_type& inter) :
base_type(src, inter, 0)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[3];
const value_type *fg_ptr;
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
fg[0] = fg[1] = fg[2] = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().span(x_lr, y_lr, 2);
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = x_hr * (image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_y();
weight = (image_subpixel_scale - x_hr) * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = x_hr * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
span->r = color_type::downshift(fg[order_type::R], image_subpixel_shift * 2);
span->g = color_type::downshift(fg[order_type::G], image_subpixel_shift * 2);
span->b = color_type::downshift(fg[order_type::B], image_subpixel_shift * 2);
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//=====================================span_image_filter_rgb_bilinear_clip
template<class Source, class Interpolator>
class span_image_filter_rgb_bilinear_clip :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgb_bilinear_clip() {}
span_image_filter_rgb_bilinear_clip(source_type& src,
const color_type& back_color,
interpolator_type& inter) :
base_type(src, inter, 0),
m_back_color(back_color)
{}
const color_type& background_color() const { return m_back_color; }
void background_color(const color_type& v) { m_back_color = v; }
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[3];
long_type src_alpha;
value_type back_r = m_back_color.r;
value_type back_g = m_back_color.g;
value_type back_b = m_back_color.b;
value_type back_a = m_back_color.a;
const value_type *fg_ptr;
int maxx = base_type::source().width() - 1;
int maxy = base_type::source().height() - 1;
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr < maxx && y_lr < maxy)
{
fg[0] = fg[1] = fg[2] = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + x_lr + x_lr + x_lr;
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
weight = x_hr * (image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
++y_lr;
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + x_lr + x_lr + x_lr;
weight = (image_subpixel_scale - x_hr) * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
weight = x_hr * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[0] = color_type::downshift(fg[0], image_subpixel_shift * 2);
fg[1] = color_type::downshift(fg[1], image_subpixel_shift * 2);
fg[2] = color_type::downshift(fg[2], image_subpixel_shift * 2);
src_alpha = color_type::full_value();
}
else
{
if(x_lr < -1 || y_lr < -1 ||
x_lr > maxx || y_lr > maxy)
{
fg[order_type::R] = back_r;
fg[order_type::G] = back_g;
fg[order_type::B] = back_b;
src_alpha = back_a;
}
else
{
fg[0] = fg[1] = fg[2] = src_alpha = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + x_lr + x_lr + x_lr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
src_alpha += weight * color_type::full_value();
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
src_alpha += back_a * weight;
}
x_lr++;
weight = x_hr * (image_subpixel_scale - y_hr);
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + x_lr + x_lr + x_lr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
src_alpha += weight * color_type::full_value();
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
src_alpha += back_a * weight;
}
x_lr--;
y_lr++;
weight = (image_subpixel_scale - x_hr) * y_hr;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + x_lr + x_lr + x_lr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
src_alpha += weight * color_type::full_value();
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
src_alpha += back_a * weight;
}
x_lr++;
weight = x_hr * y_hr;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + x_lr + x_lr + x_lr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
src_alpha += weight * color_type::full_value();
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
src_alpha += back_a * weight;
}
fg[0] = color_type::downshift(fg[0], image_subpixel_shift * 2);
fg[1] = color_type::downshift(fg[1], image_subpixel_shift * 2);
fg[2] = color_type::downshift(fg[2], image_subpixel_shift * 2);
src_alpha = color_type::downshift(src_alpha, image_subpixel_shift * 2);
}
}
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = (value_type)src_alpha;
++span;
++base_type::interpolator();
} while(--len);
}
private:
color_type m_back_color;
};
//===============================================span_image_filter_rgb_2x2
template<class Source, class Interpolator>
class span_image_filter_rgb_2x2 :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgb_2x2() {}
span_image_filter_rgb_2x2(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[3];
const value_type *fg_ptr;
const int16* weight_array = base_type::filter().weight_array() +
((base_type::filter().diameter()/2 - 1) <<
image_subpixel_shift);
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
fg[0] = fg[1] = fg[2] = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().span(x_lr, y_lr, 2);
weight = (weight_array[x_hr + image_subpixel_scale] *
weight_array[y_hr + image_subpixel_scale] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = (weight_array[x_hr] *
weight_array[y_hr + image_subpixel_scale] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_y();
weight = (weight_array[x_hr + image_subpixel_scale] *
weight_array[y_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = (weight_array[x_hr] *
weight_array[y_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
fg[0] = color_type::downshift(fg[0], image_filter_shift);
fg[1] = color_type::downshift(fg[1], image_filter_shift);
fg[2] = color_type::downshift(fg[2], image_filter_shift);
if(fg[order_type::R] > color_type::full_value()) fg[order_type::R] = color_type::full_value();
if(fg[order_type::G] > color_type::full_value()) fg[order_type::G] = color_type::full_value();
if(fg[order_type::B] > color_type::full_value()) fg[order_type::B] = color_type::full_value();
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//===================================================span_image_filter_rgb
template<class Source, class Interpolator>
class span_image_filter_rgb :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgb() {}
span_image_filter_rgb(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[3];
const value_type *fg_ptr;
unsigned diameter = base_type::filter().diameter();
int start = base_type::filter().start();
const int16* weight_array = base_type::filter().weight_array();
int x_count;
int weight_y;
do
{
base_type::interpolator().coordinates(&x, &y);
x -= base_type::filter_dx_int();
y -= base_type::filter_dy_int();
int x_hr = x;
int y_hr = y;
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
fg[0] = fg[1] = fg[2] = 0;
int x_fract = x_hr & image_subpixel_mask;
unsigned y_count = diameter;
y_hr = image_subpixel_mask - (y_hr & image_subpixel_mask);
fg_ptr = (const value_type*)base_type::source().span(x_lr + start,
y_lr + start,
diameter);
for(;;)
{
x_count = diameter;
weight_y = weight_array[y_hr];
x_hr = image_subpixel_mask - x_fract;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr;
if(--x_count == 0) break;
x_hr += image_subpixel_scale;
fg_ptr = (const value_type*)base_type::source().next_x();
}
if(--y_count == 0) break;
y_hr += image_subpixel_scale;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg[0] = color_type::downshift(fg[0], image_filter_shift);
fg[1] = color_type::downshift(fg[1], image_filter_shift);
fg[2] = color_type::downshift(fg[2], image_filter_shift);
if(fg[0] < 0) fg[0] = 0;
if(fg[1] < 0) fg[1] = 0;
if(fg[2] < 0) fg[2] = 0;
if(fg[order_type::R] > color_type::full_value()) fg[order_type::R] = color_type::full_value();
if(fg[order_type::G] > color_type::full_value()) fg[order_type::G] = color_type::full_value();
if(fg[order_type::B] > color_type::full_value()) fg[order_type::B] = color_type::full_value();
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//==========================================span_image_resample_rgb_affine
template<class Source>
class span_image_resample_rgb_affine :
public span_image_resample_affine<Source>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef span_image_resample_affine<source_type> base_type;
typedef typename base_type::interpolator_type interpolator_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
downscale_shift = image_filter_shift
};
//--------------------------------------------------------------------
span_image_resample_rgb_affine() {}
span_image_resample_rgb_affine(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[3];
int diameter = base_type::filter().diameter();
int filter_scale = diameter << image_subpixel_shift;
int radius_x = (diameter * base_type::m_rx) >> 1;
int radius_y = (diameter * base_type::m_ry) >> 1;
int len_x_lr =
(diameter * base_type::m_rx + image_subpixel_mask) >>
image_subpixel_shift;
const int16* weight_array = base_type::filter().weight_array();
do
{
base_type::interpolator().coordinates(&x, &y);
x += base_type::filter_dx_int() - radius_x;
y += base_type::filter_dy_int() - radius_y;
fg[0] = fg[1] = fg[2] = 0;
int y_lr = y >> image_subpixel_shift;
int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
base_type::m_ry_inv) >>
image_subpixel_shift;
int total_weight = 0;
int x_lr = x >> image_subpixel_shift;
int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
base_type::m_rx_inv) >>
image_subpixel_shift;
int x_hr2 = x_hr;
const value_type* fg_ptr =
(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
for(;;)
{
int weight_y = weight_array[y_hr];
x_hr = x_hr2;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
downscale_shift;
fg[0] += *fg_ptr++ * weight;
fg[1] += *fg_ptr++ * weight;
fg[2] += *fg_ptr * weight;
total_weight += weight;
x_hr += base_type::m_rx_inv;
if(x_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_x();
}
y_hr += base_type::m_ry_inv;
if(y_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg[0] /= total_weight;
fg[1] /= total_weight;
fg[2] /= total_weight;
if(fg[0] < 0) fg[0] = 0;
if(fg[1] < 0) fg[1] = 0;
if(fg[2] < 0) fg[2] = 0;
if(fg[order_type::R] > color_type::full_value()) fg[order_type::R] = color_type::full_value();
if(fg[order_type::G] > color_type::full_value()) fg[order_type::G] = color_type::full_value();
if(fg[order_type::B] > color_type::full_value()) fg[order_type::B] = color_type::full_value();
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
//=================================================span_image_resample_rgb
template<class Source, class Interpolator>
class span_image_resample_rgb :
public span_image_resample<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_resample<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
downscale_shift = image_filter_shift
};
//--------------------------------------------------------------------
span_image_resample_rgb() {}
span_image_resample_rgb(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[3];
int diameter = base_type::filter().diameter();
int filter_scale = diameter << image_subpixel_shift;
const int16* weight_array = base_type::filter().weight_array();
do
{
int rx;
int ry;
int rx_inv = image_subpixel_scale;
int ry_inv = image_subpixel_scale;
base_type::interpolator().coordinates(&x, &y);
base_type::interpolator().local_scale(&rx, &ry);
base_type::adjust_scale(&rx, &ry);
rx_inv = image_subpixel_scale * image_subpixel_scale / rx;
ry_inv = image_subpixel_scale * image_subpixel_scale / ry;
int radius_x = (diameter * rx) >> 1;
int radius_y = (diameter * ry) >> 1;
int len_x_lr =
(diameter * rx + image_subpixel_mask) >>
image_subpixel_shift;
x += base_type::filter_dx_int() - radius_x;
y += base_type::filter_dy_int() - radius_y;
fg[0] = fg[1] = fg[2] = 0;
int y_lr = y >> image_subpixel_shift;
int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
ry_inv) >>
image_subpixel_shift;
int total_weight = 0;
int x_lr = x >> image_subpixel_shift;
int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
rx_inv) >>
image_subpixel_shift;
int x_hr2 = x_hr;
const value_type* fg_ptr =
(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
for(;;)
{
int weight_y = weight_array[y_hr];
x_hr = x_hr2;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
downscale_shift;
fg[0] += *fg_ptr++ * weight;
fg[1] += *fg_ptr++ * weight;
fg[2] += *fg_ptr * weight;
total_weight += weight;
x_hr += rx_inv;
if(x_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_x();
}
y_hr += ry_inv;
if(y_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg[0] /= total_weight;
fg[1] /= total_weight;
fg[2] /= total_weight;
if(fg[0] < 0) fg[0] = 0;
if(fg[1] < 0) fg[1] = 0;
if(fg[2] < 0) fg[2] = 0;
if(fg[order_type::R] > color_type::full_value()) fg[order_type::R] = color_type::full_value();
if(fg[order_type::G] > color_type::full_value()) fg[order_type::G] = color_type::full_value();
if(fg[order_type::B] > color_type::full_value()) fg[order_type::B] = color_type::full_value();
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = color_type::full_value();
++span;
++base_type::interpolator();
} while(--len);
}
};
}
#endif

890
xs/src/agg/agg_span_image_filter_rgba.h
View file

@ -1,890 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_IMAGE_FILTER_RGBA_INCLUDED
#define AGG_SPAN_IMAGE_FILTER_RGBA_INCLUDED
#include "agg_basics.h"
#include "agg_color_rgba.h"
#include "agg_span_image_filter.h"
namespace agg
{
//==============================================span_image_filter_rgba_nn
template<class Source, class Interpolator>
class span_image_filter_rgba_nn :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgba_nn() {}
span_image_filter_rgba_nn(source_type& src,
interpolator_type& inter) :
base_type(src, inter, 0)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
do
{
base_type::interpolator().coordinates(&x, &y);
const value_type* fg_ptr = (const value_type*)
base_type::source().span(x >> image_subpixel_shift,
y >> image_subpixel_shift,
1);
span->r = fg_ptr[order_type::R];
span->g = fg_ptr[order_type::G];
span->b = fg_ptr[order_type::B];
span->a = fg_ptr[order_type::A];
++span;
++base_type::interpolator();
} while(--len);
}
};
//=========================================span_image_filter_rgba_bilinear
template<class Source, class Interpolator>
class span_image_filter_rgba_bilinear :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgba_bilinear() {}
span_image_filter_rgba_bilinear(source_type& src,
interpolator_type& inter) :
base_type(src, inter, 0)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[4];
const value_type *fg_ptr;
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
fg[0] =
fg[1] =
fg[2] =
fg[3] = image_subpixel_scale * image_subpixel_scale / 2;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().span(x_lr, y_lr, 2);
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = x_hr * (image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_y();
weight = (image_subpixel_scale - x_hr) * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = x_hr * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
span->r = value_type(color_type::downshift(fg[order_type::R], image_subpixel_shift * 2));
span->g = value_type(color_type::downshift(fg[order_type::G], image_subpixel_shift * 2));
span->b = value_type(color_type::downshift(fg[order_type::B], image_subpixel_shift * 2));
span->a = value_type(color_type::downshift(fg[order_type::A], image_subpixel_shift * 2));
++span;
++base_type::interpolator();
} while(--len);
}
};
//====================================span_image_filter_rgba_bilinear_clip
template<class Source, class Interpolator>
class span_image_filter_rgba_bilinear_clip :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgba_bilinear_clip() {}
span_image_filter_rgba_bilinear_clip(source_type& src,
const color_type& back_color,
interpolator_type& inter) :
base_type(src, inter, 0),
m_back_color(back_color)
{}
const color_type& background_color() const { return m_back_color; }
void background_color(const color_type& v) { m_back_color = v; }
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[4];
value_type back_r = m_back_color.r;
value_type back_g = m_back_color.g;
value_type back_b = m_back_color.b;
value_type back_a = m_back_color.a;
const value_type *fg_ptr;
int maxx = base_type::source().width() - 1;
int maxy = base_type::source().height() - 1;
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr < maxx && y_lr < maxy)
{
fg[0] = fg[1] = fg[2] = fg[3] = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + (x_lr << 2);
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
weight = x_hr * (image_subpixel_scale - y_hr);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
++y_lr;
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + (x_lr << 2);
weight = (image_subpixel_scale - x_hr) * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
weight = x_hr * y_hr;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
fg[0] = color_type::downshift(fg[0], image_subpixel_shift * 2);
fg[1] = color_type::downshift(fg[1], image_subpixel_shift * 2);
fg[2] = color_type::downshift(fg[2], image_subpixel_shift * 2);
fg[3] = color_type::downshift(fg[3], image_subpixel_shift * 2);
}
else
{
if(x_lr < -1 || y_lr < -1 ||
x_lr > maxx || y_lr > maxy)
{
fg[order_type::R] = back_r;
fg[order_type::G] = back_g;
fg[order_type::B] = back_b;
fg[order_type::A] = back_a;
}
else
{
fg[0] = fg[1] = fg[2] = fg[3] = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
weight = (image_subpixel_scale - x_hr) *
(image_subpixel_scale - y_hr);
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + (x_lr << 2);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
fg[order_type::A] += back_a * weight;
}
x_lr++;
weight = x_hr * (image_subpixel_scale - y_hr);
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + (x_lr << 2);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
fg[order_type::A] += back_a * weight;
}
x_lr--;
y_lr++;
weight = (image_subpixel_scale - x_hr) * y_hr;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + (x_lr << 2);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
fg[order_type::A] += back_a * weight;
}
x_lr++;
weight = x_hr * y_hr;
if(x_lr >= 0 && y_lr >= 0 &&
x_lr <= maxx && y_lr <= maxy)
{
fg_ptr = (const value_type*)
base_type::source().row_ptr(y_lr) + (x_lr << 2);
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr++;
}
else
{
fg[order_type::R] += back_r * weight;
fg[order_type::G] += back_g * weight;
fg[order_type::B] += back_b * weight;
fg[order_type::A] += back_a * weight;
}
fg[0] = color_type::downshift(fg[0], image_subpixel_shift * 2);
fg[1] = color_type::downshift(fg[1], image_subpixel_shift * 2);
fg[2] = color_type::downshift(fg[2], image_subpixel_shift * 2);
fg[3] = color_type::downshift(fg[3], image_subpixel_shift * 2);
}
}
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = (value_type)fg[order_type::A];
++span;
++base_type::interpolator();
} while(--len);
}
private:
color_type m_back_color;
};
//==============================================span_image_filter_rgba_2x2
template<class Source, class Interpolator>
class span_image_filter_rgba_2x2 :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgba_2x2() {}
span_image_filter_rgba_2x2(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[4];
const value_type *fg_ptr;
const int16* weight_array = base_type::filter().weight_array() +
((base_type::filter().diameter()/2 - 1) <<
image_subpixel_shift);
do
{
int x_hr;
int y_hr;
base_type::interpolator().coordinates(&x_hr, &y_hr);
x_hr -= base_type::filter_dx_int();
y_hr -= base_type::filter_dy_int();
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
unsigned weight;
fg[0] = fg[1] = fg[2] = fg[3] = 0;
x_hr &= image_subpixel_mask;
y_hr &= image_subpixel_mask;
fg_ptr = (const value_type*)base_type::source().span(x_lr, y_lr, 2);
weight = (weight_array[x_hr + image_subpixel_scale] *
weight_array[y_hr + image_subpixel_scale] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = (weight_array[x_hr] *
weight_array[y_hr + image_subpixel_scale] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_y();
weight = (weight_array[x_hr + image_subpixel_scale] *
weight_array[y_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg_ptr = (const value_type*)base_type::source().next_x();
weight = (weight_array[x_hr] *
weight_array[y_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
fg[0] = color_type::downshift(fg[0], image_filter_shift);
fg[1] = color_type::downshift(fg[1], image_filter_shift);
fg[2] = color_type::downshift(fg[2], image_filter_shift);
fg[3] = color_type::downshift(fg[3], image_filter_shift);
if(fg[order_type::A] > color_type::full_value()) fg[order_type::A] = color_type::full_value();
if(fg[order_type::R] > fg[order_type::A]) fg[order_type::R] = fg[order_type::A];
if(fg[order_type::G] > fg[order_type::A]) fg[order_type::G] = fg[order_type::A];
if(fg[order_type::B] > fg[order_type::A]) fg[order_type::B] = fg[order_type::A];
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = (value_type)fg[order_type::A];
++span;
++base_type::interpolator();
} while(--len);
}
};
//==================================================span_image_filter_rgba
template<class Source, class Interpolator>
class span_image_filter_rgba :
public span_image_filter<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_filter<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
typedef typename color_type::long_type long_type;
//--------------------------------------------------------------------
span_image_filter_rgba() {}
span_image_filter_rgba(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, &filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[4];
const value_type *fg_ptr;
unsigned diameter = base_type::filter().diameter();
int start = base_type::filter().start();
const int16* weight_array = base_type::filter().weight_array();
int x_count;
int weight_y;
do
{
base_type::interpolator().coordinates(&x, &y);
x -= base_type::filter_dx_int();
y -= base_type::filter_dy_int();
int x_hr = x;
int y_hr = y;
int x_lr = x_hr >> image_subpixel_shift;
int y_lr = y_hr >> image_subpixel_shift;
fg[0] = fg[1] = fg[2] = fg[3] = 0;
int x_fract = x_hr & image_subpixel_mask;
unsigned y_count = diameter;
y_hr = image_subpixel_mask - (y_hr & image_subpixel_mask);
fg_ptr = (const value_type*)base_type::source().span(x_lr + start,
y_lr + start,
diameter);
for(;;)
{
x_count = diameter;
weight_y = weight_array[y_hr];
x_hr = image_subpixel_mask - x_fract;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
image_filter_shift;
fg[0] += weight * *fg_ptr++;
fg[1] += weight * *fg_ptr++;
fg[2] += weight * *fg_ptr++;
fg[3] += weight * *fg_ptr;
if(--x_count == 0) break;
x_hr += image_subpixel_scale;
fg_ptr = (const value_type*)base_type::source().next_x();
}
if(--y_count == 0) break;
y_hr += image_subpixel_scale;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg[0] = color_type::downshift(fg[0], image_filter_shift);
fg[1] = color_type::downshift(fg[1], image_filter_shift);
fg[2] = color_type::downshift(fg[2], image_filter_shift);
fg[3] = color_type::downshift(fg[3], image_filter_shift);
if(fg[0] < 0) fg[0] = 0;
if(fg[1] < 0) fg[1] = 0;
if(fg[2] < 0) fg[2] = 0;
if(fg[3] < 0) fg[3] = 0;
if(fg[order_type::A] > color_type::full_value()) fg[order_type::A] = color_type::full_value();
if(fg[order_type::R] > fg[order_type::A]) fg[order_type::R] = fg[order_type::A];
if(fg[order_type::G] > fg[order_type::A]) fg[order_type::G] = fg[order_type::A];
if(fg[order_type::B] > fg[order_type::A]) fg[order_type::B] = fg[order_type::A];
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = (value_type)fg[order_type::A];
++span;
++base_type::interpolator();
} while(--len);
}
};
//========================================span_image_resample_rgba_affine
template<class Source>
class span_image_resample_rgba_affine :
public span_image_resample_affine<Source>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef span_image_resample_affine<source_type> base_type;
typedef typename base_type::interpolator_type interpolator_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
downscale_shift = image_filter_shift
};
//--------------------------------------------------------------------
span_image_resample_rgba_affine() {}
span_image_resample_rgba_affine(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[4];
int diameter = base_type::filter().diameter();
int filter_scale = diameter << image_subpixel_shift;
int radius_x = (diameter * base_type::m_rx) >> 1;
int radius_y = (diameter * base_type::m_ry) >> 1;
int len_x_lr =
(diameter * base_type::m_rx + image_subpixel_mask) >>
image_subpixel_shift;
const int16* weight_array = base_type::filter().weight_array();
do
{
base_type::interpolator().coordinates(&x, &y);
x += base_type::filter_dx_int() - radius_x;
y += base_type::filter_dy_int() - radius_y;
fg[0] = fg[1] = fg[2] = fg[3] = 0;
int y_lr = y >> image_subpixel_shift;
int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
base_type::m_ry_inv) >>
image_subpixel_shift;
int total_weight = 0;
int x_lr = x >> image_subpixel_shift;
int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
base_type::m_rx_inv) >>
image_subpixel_shift;
int x_hr2 = x_hr;
const value_type* fg_ptr =
(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
for(;;)
{
int weight_y = weight_array[y_hr];
x_hr = x_hr2;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
downscale_shift;
fg[0] += *fg_ptr++ * weight;
fg[1] += *fg_ptr++ * weight;
fg[2] += *fg_ptr++ * weight;
fg[3] += *fg_ptr++ * weight;
total_weight += weight;
x_hr += base_type::m_rx_inv;
if(x_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_x();
}
y_hr += base_type::m_ry_inv;
if(y_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg[0] /= total_weight;
fg[1] /= total_weight;
fg[2] /= total_weight;
fg[3] /= total_weight;
if(fg[0] < 0) fg[0] = 0;
if(fg[1] < 0) fg[1] = 0;
if(fg[2] < 0) fg[2] = 0;
if(fg[3] < 0) fg[3] = 0;
if(fg[order_type::A] > color_type::full_value()) fg[order_type::A] = color_type::full_value();
if(fg[order_type::R] > fg[order_type::A]) fg[order_type::R] = fg[order_type::A];
if(fg[order_type::G] > fg[order_type::A]) fg[order_type::G] = fg[order_type::A];
if(fg[order_type::B] > fg[order_type::A]) fg[order_type::B] = fg[order_type::A];
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = (value_type)fg[order_type::A];
++span;
++base_type::interpolator();
} while(--len);
}
};
//==============================================span_image_resample_rgba
template<class Source, class Interpolator>
class span_image_resample_rgba :
public span_image_resample<Source, Interpolator>
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef Interpolator interpolator_type;
typedef span_image_resample<source_type, interpolator_type> base_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::long_type long_type;
enum base_scale_e
{
downscale_shift = image_filter_shift
};
//--------------------------------------------------------------------
span_image_resample_rgba() {}
span_image_resample_rgba(source_type& src,
interpolator_type& inter,
image_filter_lut& filter) :
base_type(src, inter, filter)
{}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
base_type::interpolator().begin(x + base_type::filter_dx_dbl(),
y + base_type::filter_dy_dbl(), len);
long_type fg[4];
int diameter = base_type::filter().diameter();
int filter_scale = diameter << image_subpixel_shift;
const int16* weight_array = base_type::filter().weight_array();
do
{
int rx;
int ry;
int rx_inv = image_subpixel_scale;
int ry_inv = image_subpixel_scale;
base_type::interpolator().coordinates(&x, &y);
base_type::interpolator().local_scale(&rx, &ry);
base_type::adjust_scale(&rx, &ry);
rx_inv = image_subpixel_scale * image_subpixel_scale / rx;
ry_inv = image_subpixel_scale * image_subpixel_scale / ry;
int radius_x = (diameter * rx) >> 1;
int radius_y = (diameter * ry) >> 1;
int len_x_lr =
(diameter * rx + image_subpixel_mask) >>
image_subpixel_shift;
x += base_type::filter_dx_int() - radius_x;
y += base_type::filter_dy_int() - radius_y;
fg[0] = fg[1] = fg[2] = fg[3] = 0;
int y_lr = y >> image_subpixel_shift;
int y_hr = ((image_subpixel_mask - (y & image_subpixel_mask)) *
ry_inv) >>
image_subpixel_shift;
int total_weight = 0;
int x_lr = x >> image_subpixel_shift;
int x_hr = ((image_subpixel_mask - (x & image_subpixel_mask)) *
rx_inv) >>
image_subpixel_shift;
int x_hr2 = x_hr;
const value_type* fg_ptr =
(const value_type*)base_type::source().span(x_lr, y_lr, len_x_lr);
for(;;)
{
int weight_y = weight_array[y_hr];
x_hr = x_hr2;
for(;;)
{
int weight = (weight_y * weight_array[x_hr] +
image_filter_scale / 2) >>
downscale_shift;
fg[0] += *fg_ptr++ * weight;
fg[1] += *fg_ptr++ * weight;
fg[2] += *fg_ptr++ * weight;
fg[3] += *fg_ptr++ * weight;
total_weight += weight;
x_hr += rx_inv;
if(x_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_x();
}
y_hr += ry_inv;
if(y_hr >= filter_scale) break;
fg_ptr = (const value_type*)base_type::source().next_y();
}
fg[0] /= total_weight;
fg[1] /= total_weight;
fg[2] /= total_weight;
fg[3] /= total_weight;
if(fg[0] < 0) fg[0] = 0;
if(fg[1] < 0) fg[1] = 0;
if(fg[2] < 0) fg[2] = 0;
if(fg[3] < 0) fg[3] = 0;
if(fg[order_type::A] > color_type::full_value()) fg[order_type::A] = color_type::full_value();
if(fg[order_type::R] > fg[order_type::R]) fg[order_type::R] = fg[order_type::R];
if(fg[order_type::G] > fg[order_type::G]) fg[order_type::G] = fg[order_type::G];
if(fg[order_type::B] > fg[order_type::B]) fg[order_type::B] = fg[order_type::B];
span->r = (value_type)fg[order_type::R];
span->g = (value_type)fg[order_type::G];
span->b = (value_type)fg[order_type::B];
span->a = (value_type)fg[order_type::A];
++span;
++base_type::interpolator();
} while(--len);
}
};
}
#endif

77
xs/src/agg/agg_span_interpolator_adaptor.h
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@ -1,77 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_INTERPOLATOR_ADAPTOR_INCLUDED
#define AGG_SPAN_INTERPOLATOR_ADAPTOR_INCLUDED
#include "agg_basics.h"
namespace agg
{
//===============================================span_interpolator_adaptor
template<class Interpolator, class Distortion>
class span_interpolator_adaptor : public Interpolator
{
public:
typedef Interpolator base_type;
typedef typename base_type::trans_type trans_type;
typedef Distortion distortion_type;
//--------------------------------------------------------------------
span_interpolator_adaptor() {}
span_interpolator_adaptor(trans_type& trans,
distortion_type& dist) :
base_type(trans),
m_distortion(&dist)
{
}
//--------------------------------------------------------------------
span_interpolator_adaptor(trans_type& trans,
distortion_type& dist,
double x, double y, unsigned len) :
base_type(trans, x, y, len),
m_distortion(&dist)
{
}
//--------------------------------------------------------------------
distortion_type& distortion() const
{
return *m_distortion;
}
//--------------------------------------------------------------------
void distortion(distortion_type& dist)
{
m_distortion = dist;
}
//--------------------------------------------------------------------
void coordinates(int* x, int* y) const
{
base_type::coordinates(x, y);
m_distortion->calculate(x, y);
}
private:
//--------------------------------------------------------------------
distortion_type* m_distortion;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_INTERPOLATOR_LINEAR_INCLUDED
#define AGG_SPAN_INTERPOLATOR_LINEAR_INCLUDED
#include "agg_basics.h"
#include "agg_dda_line.h"
#include "agg_trans_affine.h"
namespace agg
{
//================================================span_interpolator_linear
template<class Transformer = trans_affine, unsigned SubpixelShift = 8>
class span_interpolator_linear
{
public:
typedef Transformer trans_type;
enum subpixel_scale_e
{
subpixel_shift = SubpixelShift,
subpixel_scale = 1 << subpixel_shift
};
//--------------------------------------------------------------------
span_interpolator_linear() {}
span_interpolator_linear(trans_type& trans) : m_trans(&trans) {}
span_interpolator_linear(trans_type& trans,
double x, double y, unsigned len) :
m_trans(&trans)
{
begin(x, y, len);
}
//----------------------------------------------------------------
const trans_type& transformer() const { return *m_trans; }
void transformer(trans_type& trans) { m_trans = &trans; }
//----------------------------------------------------------------
void begin(double x, double y, unsigned len)
{
double tx;
double ty;
tx = x;
ty = y;
m_trans->transform(&tx, &ty);
int x1 = iround(tx * subpixel_scale);
int y1 = iround(ty * subpixel_scale);
tx = x + len;
ty = y;
m_trans->transform(&tx, &ty);
int x2 = iround(tx * subpixel_scale);
int y2 = iround(ty * subpixel_scale);
m_li_x = dda2_line_interpolator(x1, x2, len);
m_li_y = dda2_line_interpolator(y1, y2, len);
}
//----------------------------------------------------------------
void resynchronize(double xe, double ye, unsigned len)
{
m_trans->transform(&xe, &ye);
m_li_x = dda2_line_interpolator(m_li_x.y(), iround(xe * subpixel_scale), len);
m_li_y = dda2_line_interpolator(m_li_y.y(), iround(ye * subpixel_scale), len);
}
//----------------------------------------------------------------
void operator++()
{
++m_li_x;
++m_li_y;
}
//----------------------------------------------------------------
void coordinates(int* x, int* y) const
{
*x = m_li_x.y();
*y = m_li_y.y();
}
private:
trans_type* m_trans;
dda2_line_interpolator m_li_x;
dda2_line_interpolator m_li_y;
};
//=====================================span_interpolator_linear_subdiv
template<class Transformer = trans_affine, unsigned SubpixelShift = 8>
class span_interpolator_linear_subdiv
{
public:
typedef Transformer trans_type;
enum subpixel_scale_e
{
subpixel_shift = SubpixelShift,
subpixel_scale = 1 << subpixel_shift
};
//----------------------------------------------------------------
span_interpolator_linear_subdiv() :
m_subdiv_shift(4),
m_subdiv_size(1 << m_subdiv_shift),
m_subdiv_mask(m_subdiv_size - 1) {}
span_interpolator_linear_subdiv(trans_type& trans,
unsigned subdiv_shift = 4) :
m_subdiv_shift(subdiv_shift),
m_subdiv_size(1 << m_subdiv_shift),
m_subdiv_mask(m_subdiv_size - 1),
m_trans(&trans) {}
span_interpolator_linear_subdiv(trans_type& trans,
double x, double y, unsigned len,
unsigned subdiv_shift = 4) :
m_subdiv_shift(subdiv_shift),
m_subdiv_size(1 << m_subdiv_shift),
m_subdiv_mask(m_subdiv_size - 1),
m_trans(&trans)
{
begin(x, y, len);
}
//----------------------------------------------------------------
const trans_type& transformer() const { return *m_trans; }
void transformer(const trans_type& trans) { m_trans = &trans; }
//----------------------------------------------------------------
unsigned subdiv_shift() const { return m_subdiv_shift; }
void subdiv_shift(unsigned shift)
{
m_subdiv_shift = shift;
m_subdiv_size = 1 << m_subdiv_shift;
m_subdiv_mask = m_subdiv_size - 1;
}
//----------------------------------------------------------------
void begin(double x, double y, unsigned len)
{
double tx;
double ty;
m_pos = 1;
m_src_x = iround(x * subpixel_scale) + subpixel_scale;
m_src_y = y;
m_len = len;
if(len > m_subdiv_size) len = m_subdiv_size;
tx = x;
ty = y;
m_trans->transform(&tx, &ty);
int x1 = iround(tx * subpixel_scale);
int y1 = iround(ty * subpixel_scale);
tx = x + len;
ty = y;
m_trans->transform(&tx, &ty);
m_li_x = dda2_line_interpolator(x1, iround(tx * subpixel_scale), len);
m_li_y = dda2_line_interpolator(y1, iround(ty * subpixel_scale), len);
}
//----------------------------------------------------------------
void operator++()
{
++m_li_x;
++m_li_y;
if(m_pos >= m_subdiv_size)
{
unsigned len = m_len;
if(len > m_subdiv_size) len = m_subdiv_size;
double tx = double(m_src_x) / double(subpixel_scale) + len;
double ty = m_src_y;
m_trans->transform(&tx, &ty);
m_li_x = dda2_line_interpolator(m_li_x.y(), iround(tx * subpixel_scale), len);
m_li_y = dda2_line_interpolator(m_li_y.y(), iround(ty * subpixel_scale), len);
m_pos = 0;
}
m_src_x += subpixel_scale;
++m_pos;
--m_len;
}
//----------------------------------------------------------------
void coordinates(int* x, int* y) const
{
*x = m_li_x.y();
*y = m_li_y.y();
}
private:
unsigned m_subdiv_shift;
unsigned m_subdiv_size;
unsigned m_subdiv_mask;
trans_type* m_trans;
dda2_line_interpolator m_li_x;
dda2_line_interpolator m_li_y;
int m_src_x;
double m_src_y;
unsigned m_pos;
unsigned m_len;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_INTERPOLATOR_PERSP_INCLUDED
#define AGG_SPAN_INTERPOLATOR_PERSP_INCLUDED
#include "agg_trans_perspective.h"
#include "agg_dda_line.h"
namespace agg
{
//===========================================span_interpolator_persp_exact
template<unsigned SubpixelShift = 8>
class span_interpolator_persp_exact
{
public:
typedef trans_perspective trans_type;
typedef trans_perspective::iterator_x iterator_type;
enum subpixel_scale_e
{
subpixel_shift = SubpixelShift,
subpixel_scale = 1 << subpixel_shift
};
//--------------------------------------------------------------------
span_interpolator_persp_exact() {}
//--------------------------------------------------------------------
// Arbitrary quadrangle transformations
span_interpolator_persp_exact(const double* src, const double* dst)
{
quad_to_quad(src, dst);
}
//--------------------------------------------------------------------
// Direct transformations
span_interpolator_persp_exact(double x1, double y1,
double x2, double y2,
const double* quad)
{
rect_to_quad(x1, y1, x2, y2, quad);
}
//--------------------------------------------------------------------
// Reverse transformations
span_interpolator_persp_exact(const double* quad,
double x1, double y1,
double x2, double y2)
{
quad_to_rect(quad, x1, y1, x2, y2);
}
//--------------------------------------------------------------------
// Set the transformations using two arbitrary quadrangles.
void quad_to_quad(const double* src, const double* dst)
{
m_trans_dir.quad_to_quad(src, dst);
m_trans_inv.quad_to_quad(dst, src);
}
//--------------------------------------------------------------------
// Set the direct transformations, i.e., rectangle -> quadrangle
void rect_to_quad(double x1, double y1, double x2, double y2,
const double* quad)
{
double src[8];
src[0] = src[6] = x1;
src[2] = src[4] = x2;
src[1] = src[3] = y1;
src[5] = src[7] = y2;
quad_to_quad(src, quad);
}
//--------------------------------------------------------------------
// Set the reverse transformations, i.e., quadrangle -> rectangle
void quad_to_rect(const double* quad,
double x1, double y1, double x2, double y2)
{
double dst[8];
dst[0] = dst[6] = x1;
dst[2] = dst[4] = x2;
dst[1] = dst[3] = y1;
dst[5] = dst[7] = y2;
quad_to_quad(quad, dst);
}
//--------------------------------------------------------------------
// Check if the equations were solved successfully
bool is_valid() const { return m_trans_dir.is_valid(); }
//----------------------------------------------------------------
void begin(double x, double y, unsigned len)
{
m_iterator = m_trans_dir.begin(x, y, 1.0);
double xt = m_iterator.x;
double yt = m_iterator.y;
double dx;
double dy;
const double delta = 1/double(subpixel_scale);
dx = xt + delta;
dy = yt;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sx1 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
dx = xt;
dy = yt + delta;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sy1 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
x += len;
xt = x;
yt = y;
m_trans_dir.transform(&xt, &yt);
dx = xt + delta;
dy = yt;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sx2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
dx = xt;
dy = yt + delta;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sy2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
m_scale_x = dda2_line_interpolator(sx1, sx2, len);
m_scale_y = dda2_line_interpolator(sy1, sy2, len);
}
//----------------------------------------------------------------
void resynchronize(double xe, double ye, unsigned len)
{
// Assume x1,y1 are equal to the ones at the previous end point
int sx1 = m_scale_x.y();
int sy1 = m_scale_y.y();
// Calculate transformed coordinates at x2,y2
double xt = xe;
double yt = ye;
m_trans_dir.transform(&xt, &yt);
const double delta = 1/double(subpixel_scale);
double dx;
double dy;
// Calculate scale by X at x2,y2
dx = xt + delta;
dy = yt;
m_trans_inv.transform(&dx, &dy);
dx -= xe;
dy -= ye;
int sx2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Calculate scale by Y at x2,y2
dx = xt;
dy = yt + delta;
m_trans_inv.transform(&dx, &dy);
dx -= xe;
dy -= ye;
int sy2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Initialize the interpolators
m_scale_x = dda2_line_interpolator(sx1, sx2, len);
m_scale_y = dda2_line_interpolator(sy1, sy2, len);
}
//----------------------------------------------------------------
void operator++()
{
++m_iterator;
++m_scale_x;
++m_scale_y;
}
//----------------------------------------------------------------
void coordinates(int* x, int* y) const
{
*x = iround(m_iterator.x * subpixel_scale);
*y = iround(m_iterator.y * subpixel_scale);
}
//----------------------------------------------------------------
void local_scale(int* x, int* y)
{
*x = m_scale_x.y();
*y = m_scale_y.y();
}
//----------------------------------------------------------------
void transform(double* x, double* y) const
{
m_trans_dir.transform(x, y);
}
private:
trans_type m_trans_dir;
trans_type m_trans_inv;
iterator_type m_iterator;
dda2_line_interpolator m_scale_x;
dda2_line_interpolator m_scale_y;
};
//============================================span_interpolator_persp_lerp
template<unsigned SubpixelShift = 8>
class span_interpolator_persp_lerp
{
public:
typedef trans_perspective trans_type;
enum subpixel_scale_e
{
subpixel_shift = SubpixelShift,
subpixel_scale = 1 << subpixel_shift
};
//--------------------------------------------------------------------
span_interpolator_persp_lerp() {}
//--------------------------------------------------------------------
// Arbitrary quadrangle transformations
span_interpolator_persp_lerp(const double* src, const double* dst)
{
quad_to_quad(src, dst);
}
//--------------------------------------------------------------------
// Direct transformations
span_interpolator_persp_lerp(double x1, double y1,
double x2, double y2,
const double* quad)
{
rect_to_quad(x1, y1, x2, y2, quad);
}
//--------------------------------------------------------------------
// Reverse transformations
span_interpolator_persp_lerp(const double* quad,
double x1, double y1,
double x2, double y2)
{
quad_to_rect(quad, x1, y1, x2, y2);
}
//--------------------------------------------------------------------
// Set the transformations using two arbitrary quadrangles.
void quad_to_quad(const double* src, const double* dst)
{
m_trans_dir.quad_to_quad(src, dst);
m_trans_inv.quad_to_quad(dst, src);
}
//--------------------------------------------------------------------
// Set the direct transformations, i.e., rectangle -> quadrangle
void rect_to_quad(double x1, double y1, double x2, double y2,
const double* quad)
{
double src[8];
src[0] = src[6] = x1;
src[2] = src[4] = x2;
src[1] = src[3] = y1;
src[5] = src[7] = y2;
quad_to_quad(src, quad);
}
//--------------------------------------------------------------------
// Set the reverse transformations, i.e., quadrangle -> rectangle
void quad_to_rect(const double* quad,
double x1, double y1, double x2, double y2)
{
double dst[8];
dst[0] = dst[6] = x1;
dst[2] = dst[4] = x2;
dst[1] = dst[3] = y1;
dst[5] = dst[7] = y2;
quad_to_quad(quad, dst);
}
//--------------------------------------------------------------------
// Check if the equations were solved successfully
bool is_valid() const { return m_trans_dir.is_valid(); }
//----------------------------------------------------------------
void begin(double x, double y, unsigned len)
{
// Calculate transformed coordinates at x1,y1
double xt = x;
double yt = y;
m_trans_dir.transform(&xt, &yt);
int x1 = iround(xt * subpixel_scale);
int y1 = iround(yt * subpixel_scale);
double dx;
double dy;
const double delta = 1/double(subpixel_scale);
// Calculate scale by X at x1,y1
dx = xt + delta;
dy = yt;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sx1 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Calculate scale by Y at x1,y1
dx = xt;
dy = yt + delta;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sy1 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Calculate transformed coordinates at x2,y2
x += len;
xt = x;
yt = y;
m_trans_dir.transform(&xt, &yt);
int x2 = iround(xt * subpixel_scale);
int y2 = iround(yt * subpixel_scale);
// Calculate scale by X at x2,y2
dx = xt + delta;
dy = yt;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sx2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Calculate scale by Y at x2,y2
dx = xt;
dy = yt + delta;
m_trans_inv.transform(&dx, &dy);
dx -= x;
dy -= y;
int sy2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Initialize the interpolators
m_coord_x = dda2_line_interpolator(x1, x2, len);
m_coord_y = dda2_line_interpolator(y1, y2, len);
m_scale_x = dda2_line_interpolator(sx1, sx2, len);
m_scale_y = dda2_line_interpolator(sy1, sy2, len);
}
//----------------------------------------------------------------
void resynchronize(double xe, double ye, unsigned len)
{
// Assume x1,y1 are equal to the ones at the previous end point
int x1 = m_coord_x.y();
int y1 = m_coord_y.y();
int sx1 = m_scale_x.y();
int sy1 = m_scale_y.y();
// Calculate transformed coordinates at x2,y2
double xt = xe;
double yt = ye;
m_trans_dir.transform(&xt, &yt);
int x2 = iround(xt * subpixel_scale);
int y2 = iround(yt * subpixel_scale);
const double delta = 1/double(subpixel_scale);
double dx;
double dy;
// Calculate scale by X at x2,y2
dx = xt + delta;
dy = yt;
m_trans_inv.transform(&dx, &dy);
dx -= xe;
dy -= ye;
int sx2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Calculate scale by Y at x2,y2
dx = xt;
dy = yt + delta;
m_trans_inv.transform(&dx, &dy);
dx -= xe;
dy -= ye;
int sy2 = uround(subpixel_scale/sqrt(dx*dx + dy*dy)) >> subpixel_shift;
// Initialize the interpolators
m_coord_x = dda2_line_interpolator(x1, x2, len);
m_coord_y = dda2_line_interpolator(y1, y2, len);
m_scale_x = dda2_line_interpolator(sx1, sx2, len);
m_scale_y = dda2_line_interpolator(sy1, sy2, len);
}
//----------------------------------------------------------------
void operator++()
{
++m_coord_x;
++m_coord_y;
++m_scale_x;
++m_scale_y;
}
//----------------------------------------------------------------
void coordinates(int* x, int* y) const
{
*x = m_coord_x.y();
*y = m_coord_y.y();
}
//----------------------------------------------------------------
void local_scale(int* x, int* y)
{
*x = m_scale_x.y();
*y = m_scale_y.y();
}
//----------------------------------------------------------------
void transform(double* x, double* y) const
{
m_trans_dir.transform(x, y);
}
private:
trans_type m_trans_dir;
trans_type m_trans_inv;
dda2_line_interpolator m_coord_x;
dda2_line_interpolator m_coord_y;
dda2_line_interpolator m_scale_x;
dda2_line_interpolator m_scale_y;
};
}
#endif

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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Horizontal span interpolator for use with an arbitrary transformer
// The efficiency highly depends on the operations done in the transformer
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_INTERPOLATOR_TRANS_INCLUDED
#define AGG_SPAN_INTERPOLATOR_TRANS_INCLUDED
#include "agg_basics.h"
namespace agg
{
//=================================================span_interpolator_trans
template<class Transformer, unsigned SubpixelShift = 8>
class span_interpolator_trans
{
public:
typedef Transformer trans_type;
enum subpixel_scale_e
{
subpixel_shift = SubpixelShift,
subpixel_scale = 1 << subpixel_shift
};
//--------------------------------------------------------------------
span_interpolator_trans() {}
span_interpolator_trans(trans_type& trans) : m_trans(&trans) {}
span_interpolator_trans(trans_type& trans,
double x, double y, unsigned) :
m_trans(&trans)
{
begin(x, y, 0);
}
//----------------------------------------------------------------
const trans_type& transformer() const { return *m_trans; }
void transformer(const trans_type& trans) { m_trans = &trans; }
//----------------------------------------------------------------
void begin(double x, double y, unsigned)
{
m_x = x;
m_y = y;
m_trans->transform(&x, &y);
m_ix = iround(x * subpixel_scale);
m_iy = iround(y * subpixel_scale);
}
//----------------------------------------------------------------
void operator++()
{
m_x += 1.0;
double x = m_x;
double y = m_y;
m_trans->transform(&x, &y);
m_ix = iround(x * subpixel_scale);
m_iy = iround(y * subpixel_scale);
}
//----------------------------------------------------------------
void coordinates(int* x, int* y) const
{
*x = m_ix;
*y = m_iy;
}
private:
trans_type* m_trans;
double m_x;
double m_y;
int m_ix;
int m_iy;
};
}
#endif

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xs/src/agg/agg_span_pattern_gray.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_PATTERN_GRAY_INCLUDED
#define AGG_SPAN_PATTERN_GRAY_INCLUDED
#include "agg_basics.h"
namespace agg
{
//=======================================================span_pattern_gray
template<class Source> class span_pattern_gray
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
//--------------------------------------------------------------------
span_pattern_gray() {}
span_pattern_gray(source_type& src,
unsigned offset_x, unsigned offset_y) :
m_src(&src),
m_offset_x(offset_x),
m_offset_y(offset_y),
m_alpha(color_type::base_mask)
{}
//--------------------------------------------------------------------
void attach(source_type& v) { m_src = &v; }
source_type& source() { return *m_src; }
const source_type& source() const { return *m_src; }
//--------------------------------------------------------------------
void offset_x(unsigned v) { m_offset_x = v; }
void offset_y(unsigned v) { m_offset_y = v; }
unsigned offset_x() const { return m_offset_x; }
unsigned offset_y() const { return m_offset_y; }
void alpha(value_type v) { m_alpha = v; }
value_type alpha() const { return m_alpha; }
//--------------------------------------------------------------------
void prepare() {}
void generate(color_type* span, int x, int y, unsigned len)
{
x += m_offset_x;
y += m_offset_y;
const value_type* p = (const value_type*)m_src->span(x, y, len);
do
{
span->v = *p;
span->a = m_alpha;
p = m_src->next_x();
++span;
}
while(--len);
}
private:
source_type* m_src;
unsigned m_offset_x;
unsigned m_offset_y;
value_type m_alpha;
};
}
#endif

96
xs/src/agg/agg_span_pattern_rgb.h
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@ -1,96 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_PATTERN_RGB_INCLUDED
#define AGG_SPAN_PATTERN_RGB_INCLUDED
#include "agg_basics.h"
namespace agg
{
//========================================================span_pattern_rgb
template<class Source> class span_pattern_rgb
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
//--------------------------------------------------------------------
span_pattern_rgb() {}
span_pattern_rgb(source_type& src,
unsigned offset_x, unsigned offset_y) :
m_src(&src),
m_offset_x(offset_x),
m_offset_y(offset_y),
m_alpha(color_type::base_mask)
{}
//--------------------------------------------------------------------
void attach(source_type& v) { m_src = &v; }
source_type& source() { return *m_src; }
const source_type& source() const { return *m_src; }
//--------------------------------------------------------------------
void offset_x(unsigned v) { m_offset_x = v; }
void offset_y(unsigned v) { m_offset_y = v; }
unsigned offset_x() const { return m_offset_x; }
unsigned offset_y() const { return m_offset_y; }
void alpha(value_type v) { m_alpha = v; }
value_type alpha() const { return m_alpha; }
//--------------------------------------------------------------------
void prepare() {}
void generate(color_type* span, int x, int y, unsigned len)
{
x += m_offset_x;
y += m_offset_y;
const value_type* p = (const value_type*)m_src->span(x, y, len);
do
{
span->r = p[order_type::R];
span->g = p[order_type::G];
span->b = p[order_type::B];
span->a = m_alpha;
p = m_src->next_x();
++span;
}
while(--len);
}
private:
source_type* m_src;
unsigned m_offset_x;
unsigned m_offset_y;
value_type m_alpha;
};
}
#endif

94
xs/src/agg/agg_span_pattern_rgba.h
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//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
// Liberty Technology Systems, Inc., visit http://lib-sys.com
//
// Liberty Technology Systems, Inc. is the provider of
// PostScript and PDF technology for software developers.
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_PATTERN_RGBA_INCLUDED
#define AGG_SPAN_PATTERN_RGBA_INCLUDED
#include "agg_basics.h"
namespace agg
{
//======================================================span_pattern_rgba
template<class Source> class span_pattern_rgba
{
public:
typedef Source source_type;
typedef typename source_type::color_type color_type;
typedef typename source_type::order_type order_type;
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
//--------------------------------------------------------------------
span_pattern_rgba() {}
span_pattern_rgba(source_type& src,
unsigned offset_x, unsigned offset_y) :
m_src(&src),
m_offset_x(offset_x),
m_offset_y(offset_y)
{}
//--------------------------------------------------------------------
void attach(source_type& v) { m_src = &v; }
source_type& source() { return *m_src; }
const source_type& source() const { return *m_src; }
//--------------------------------------------------------------------
void offset_x(unsigned v) { m_offset_x = v; }
void offset_y(unsigned v) { m_offset_y = v; }
unsigned offset_x() const { return m_offset_x; }
unsigned offset_y() const { return m_offset_y; }
void alpha(value_type) {}
value_type alpha() const { return 0; }
//--------------------------------------------------------------------
void prepare() {}
void generate(color_type* span, int x, int y, unsigned len)
{
x += m_offset_x;
y += m_offset_y;
const value_type* p = (const value_type*)m_src->span(x, y, len);
do
{
span->r = p[order_type::R];
span->g = p[order_type::G];
span->b = p[order_type::B];
span->a = p[order_type::A];
p = (const value_type*)m_src->next_x();
++span;
}
while(--len);
}
private:
source_type* m_src;
unsigned m_offset_x;
unsigned m_offset_y;
};
}
#endif

53
xs/src/agg/agg_span_solid.h
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@ -1,53 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// span_solid_rgba8
//
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_SOLID_INCLUDED
#define AGG_SPAN_SOLID_INCLUDED
#include "agg_basics.h"
namespace agg
{
//--------------------------------------------------------------span_solid
template<class ColorT> class span_solid
{
public:
typedef ColorT color_type;
//--------------------------------------------------------------------
void color(const color_type& c) { m_color = c; }
const color_type& color() const { return m_color; }
//--------------------------------------------------------------------
void prepare() {}
//--------------------------------------------------------------------
void generate(color_type* span, int x, int y, unsigned len)
{
do { *span++ = m_color; } while(--len);
}
private:
color_type m_color;
};
}
#endif

141
xs/src/agg/agg_span_subdiv_adaptor.h
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@ -1,141 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_SPAN_SUBDIV_ADAPTOR_INCLUDED
#define AGG_SPAN_SUBDIV_ADAPTOR_INCLUDED
#include "agg_basics.h"
namespace agg
{
//=================================================span_subdiv_adaptor
template<class Interpolator, unsigned SubpixelShift = 8>
class span_subdiv_adaptor
{
public:
typedef Interpolator interpolator_type;
typedef typename interpolator_type::trans_type trans_type;
enum sublixel_scale_e
{
subpixel_shift = SubpixelShift,
subpixel_scale = 1 << subpixel_shift
};
//----------------------------------------------------------------
span_subdiv_adaptor() :
m_subdiv_shift(4),
m_subdiv_size(1 << m_subdiv_shift),
m_subdiv_mask(m_subdiv_size - 1) {}
span_subdiv_adaptor(interpolator_type& interpolator,
unsigned subdiv_shift = 4) :
m_subdiv_shift(subdiv_shift),
m_subdiv_size(1 << m_subdiv_shift),
m_subdiv_mask(m_subdiv_size - 1),
m_interpolator(&interpolator) {}
span_subdiv_adaptor(interpolator_type& interpolator,
double x, double y, unsigned len,
unsigned subdiv_shift = 4) :
m_subdiv_shift(subdiv_shift),
m_subdiv_size(1 << m_subdiv_shift),
m_subdiv_mask(m_subdiv_size - 1),
m_interpolator(&interpolator)
{
begin(x, y, len);
}
//----------------------------------------------------------------
const interpolator_type& interpolator() const { return *m_interpolator; }
void interpolator(interpolator_type& intr) { m_interpolator = &intr; }
//----------------------------------------------------------------
const trans_type& transformer() const
{
return *m_interpolator->transformer();
}
void transformer(const trans_type& trans)
{
m_interpolator->transformer(trans);
}
//----------------------------------------------------------------
unsigned subdiv_shift() const { return m_subdiv_shift; }
void subdiv_shift(unsigned shift)
{
m_subdiv_shift = shift;
m_subdiv_size = 1 << m_subdiv_shift;
m_subdiv_mask = m_subdiv_size - 1;
}
//----------------------------------------------------------------
void begin(double x, double y, unsigned len)
{
m_pos = 1;
m_src_x = iround(x * subpixel_scale) + subpixel_scale;
m_src_y = y;
m_len = len;
if(len > m_subdiv_size) len = m_subdiv_size;
m_interpolator->begin(x, y, len);
}
//----------------------------------------------------------------
void operator++()
{
++(*m_interpolator);
if(m_pos >= m_subdiv_size)
{
unsigned len = m_len;
if(len > m_subdiv_size) len = m_subdiv_size;
m_interpolator->resynchronize(double(m_src_x) / double(subpixel_scale) + len,
m_src_y,
len);
m_pos = 0;
}
m_src_x += subpixel_scale;
++m_pos;
--m_len;
}
//----------------------------------------------------------------
void coordinates(int* x, int* y) const
{
m_interpolator->coordinates(x, y);
}
//----------------------------------------------------------------
void local_scale(int* x, int* y) const
{
m_interpolator->local_scale(x, y);
}
private:
unsigned m_subdiv_shift;
unsigned m_subdiv_size;
unsigned m_subdiv_mask;
interpolator_type* m_interpolator;
int m_src_x;
double m_src_y;
unsigned m_pos;
unsigned m_len;
};
}
#endif

166
xs/src/agg/agg_trans_bilinear.h
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@ -1,166 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Bilinear 2D transformations
//
//----------------------------------------------------------------------------
#ifndef AGG_TRANS_BILINEAR_INCLUDED
#define AGG_TRANS_BILINEAR_INCLUDED
#include "agg_basics.h"
#include "agg_simul_eq.h"
namespace agg
{
//==========================================================trans_bilinear
class trans_bilinear
{
public:
//--------------------------------------------------------------------
trans_bilinear() : m_valid(false) {}
//--------------------------------------------------------------------
// Arbitrary quadrangle transformations
trans_bilinear(const double* src, const double* dst)
{
quad_to_quad(src, dst);
}
//--------------------------------------------------------------------
// Direct transformations
trans_bilinear(double x1, double y1, double x2, double y2,
const double* quad)
{
rect_to_quad(x1, y1, x2, y2, quad);
}
//--------------------------------------------------------------------
// Reverse transformations
trans_bilinear(const double* quad,
double x1, double y1, double x2, double y2)
{
quad_to_rect(quad, x1, y1, x2, y2);
}
//--------------------------------------------------------------------
// Set the transformations using two arbitrary quadrangles.
void quad_to_quad(const double* src, const double* dst)
{
double left[4][4];
double right[4][2];
unsigned i;
for(i = 0; i < 4; i++)
{
unsigned ix = i * 2;
unsigned iy = ix + 1;
left[i][0] = 1.0;
left[i][1] = src[ix] * src[iy];
left[i][2] = src[ix];
left[i][3] = src[iy];
right[i][0] = dst[ix];
right[i][1] = dst[iy];
}
m_valid = simul_eq<4, 2>::solve(left, right, m_mtx);
}
//--------------------------------------------------------------------
// Set the direct transformations, i.e., rectangle -> quadrangle
void rect_to_quad(double x1, double y1, double x2, double y2,
const double* quad)
{
double src[8];
src[0] = src[6] = x1;
src[2] = src[4] = x2;
src[1] = src[3] = y1;
src[5] = src[7] = y2;
quad_to_quad(src, quad);
}
//--------------------------------------------------------------------
// Set the reverse transformations, i.e., quadrangle -> rectangle
void quad_to_rect(const double* quad,
double x1, double y1, double x2, double y2)
{
double dst[8];
dst[0] = dst[6] = x1;
dst[2] = dst[4] = x2;
dst[1] = dst[3] = y1;
dst[5] = dst[7] = y2;
quad_to_quad(quad, dst);
}
//--------------------------------------------------------------------
// Check if the equations were solved successfully
bool is_valid() const { return m_valid; }
//--------------------------------------------------------------------
// Transform a point (x, y)
void transform(double* x, double* y) const
{
double tx = *x;
double ty = *y;
double xy = tx * ty;
*x = m_mtx[0][0] + m_mtx[1][0] * xy + m_mtx[2][0] * tx + m_mtx[3][0] * ty;
*y = m_mtx[0][1] + m_mtx[1][1] * xy + m_mtx[2][1] * tx + m_mtx[3][1] * ty;
}
//--------------------------------------------------------------------
class iterator_x
{
double inc_x;
double inc_y;
public:
double x;
double y;
iterator_x() {}
iterator_x(double tx, double ty, double step, const double m[4][2]) :
inc_x(m[1][0] * step * ty + m[2][0] * step),
inc_y(m[1][1] * step * ty + m[2][1] * step),
x(m[0][0] + m[1][0] * tx * ty + m[2][0] * tx + m[3][0] * ty),
y(m[0][1] + m[1][1] * tx * ty + m[2][1] * tx + m[3][1] * ty)
{
}
void operator ++ ()
{
x += inc_x;
y += inc_y;
}
};
iterator_x begin(double x, double y, double step) const
{
return iterator_x(x, y, step, m_mtx);
}
private:
double m_mtx[4][2];
bool m_valid;
};
}
#endif

131
xs/src/agg/agg_trans_double_path.h
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@ -1,131 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_TRANS_DOUBLE_PATH_INCLUDED
#define AGG_TRANS_DOUBLE_PATH_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
// See also: agg_trans_double_path.cpp
//
//-------------------------------------------------------trans_double_path
class trans_double_path
{
enum status_e
{
initial,
making_path,
ready
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
trans_double_path();
//--------------------------------------------------------------------
void base_length(double v) { m_base_length = v; }
double base_length() const { return m_base_length; }
//--------------------------------------------------------------------
void base_height(double v) { m_base_height = v; }
double base_height() const { return m_base_height; }
//--------------------------------------------------------------------
void preserve_x_scale(bool f) { m_preserve_x_scale = f; }
bool preserve_x_scale() const { return m_preserve_x_scale; }
//--------------------------------------------------------------------
void reset();
void move_to1(double x, double y);
void line_to1(double x, double y);
void move_to2(double x, double y);
void line_to2(double x, double y);
void finalize_paths();
//--------------------------------------------------------------------
template<class VertexSource1, class VertexSource2>
void add_paths(VertexSource1& vs1, VertexSource2& vs2,
unsigned path1_id=0, unsigned path2_id=0)
{
double x;
double y;
unsigned cmd;
vs1.rewind(path1_id);
while(!is_stop(cmd = vs1.vertex(&x, &y)))
{
if(is_move_to(cmd))
{
move_to1(x, y);
}
else
{
if(is_vertex(cmd))
{
line_to1(x, y);
}
}
}
vs2.rewind(path2_id);
while(!is_stop(cmd = vs2.vertex(&x, &y)))
{
if(is_move_to(cmd))
{
move_to2(x, y);
}
else
{
if(is_vertex(cmd))
{
line_to2(x, y);
}
}
}
finalize_paths();
}
//--------------------------------------------------------------------
double total_length1() const;
double total_length2() const;
void transform(double *x, double *y) const;
private:
double finalize_path(vertex_storage& vertices);
void transform1(const vertex_storage& vertices,
double kindex, double kx,
double *x, double* y) const;
vertex_storage m_src_vertices1;
vertex_storage m_src_vertices2;
double m_base_length;
double m_base_height;
double m_kindex1;
double m_kindex2;
status_e m_status1;
status_e m_status2;
bool m_preserve_x_scale;
};
}
#endif

731
xs/src/agg/agg_trans_perspective.h
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@ -1,731 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Perspective 2D transformations
//
//----------------------------------------------------------------------------
#ifndef AGG_TRANS_PERSPECTIVE_INCLUDED
#define AGG_TRANS_PERSPECTIVE_INCLUDED
#include "agg_trans_affine.h"
namespace agg
{
//=======================================================trans_perspective
struct trans_perspective
{
double sx, shy, w0, shx, sy, w1, tx, ty, w2;
//------------------------------------------------------- Construction
// Identity matrix
trans_perspective() :
sx (1), shy(0), w0(0),
shx(0), sy (1), w1(0),
tx (0), ty (0), w2(1) {}
// Custom matrix
trans_perspective(double v0, double v1, double v2,
double v3, double v4, double v5,
double v6, double v7, double v8) :
sx (v0), shy(v1), w0(v2),
shx(v3), sy (v4), w1(v5),
tx (v6), ty (v7), w2(v8) {}
// Custom matrix from m[9]
explicit trans_perspective(const double* m) :
sx (m[0]), shy(m[1]), w0(m[2]),
shx(m[3]), sy (m[4]), w1(m[5]),
tx (m[6]), ty (m[7]), w2(m[8]) {}
// From affine
explicit trans_perspective(const trans_affine& a) :
sx (a.sx ), shy(a.shy), w0(0),
shx(a.shx), sy (a.sy ), w1(0),
tx (a.tx ), ty (a.ty ), w2(1) {}
// Rectangle to quadrilateral
trans_perspective(double x1, double y1, double x2, double y2,
const double* quad);
// Quadrilateral to rectangle
trans_perspective(const double* quad,
double x1, double y1, double x2, double y2);
// Arbitrary quadrilateral transformations
trans_perspective(const double* src, const double* dst);
//-------------------------------------- Quadrilateral transformations
// The arguments are double[8] that are mapped to quadrilaterals:
// x1,y1, x2,y2, x3,y3, x4,y4
bool quad_to_quad(const double* qs, const double* qd);
bool rect_to_quad(double x1, double y1,
double x2, double y2,
const double* q);
bool quad_to_rect(const double* q,
double x1, double y1,
double x2, double y2);
// Map square (0,0,1,1) to the quadrilateral and vice versa
bool square_to_quad(const double* q);
bool quad_to_square(const double* q);
//--------------------------------------------------------- Operations
// Reset - load an identity matrix
const trans_perspective& reset();
// Invert matrix. Returns false in degenerate case
bool invert();
// Direct transformations operations
const trans_perspective& translate(double x, double y);
const trans_perspective& rotate(double a);
const trans_perspective& scale(double s);
const trans_perspective& scale(double x, double y);
// Multiply the matrix by another one
const trans_perspective& multiply(const trans_perspective& m);
// Multiply "m" by "this" and assign the result to "this"
const trans_perspective& premultiply(const trans_perspective& m);
// Multiply matrix to inverse of another one
const trans_perspective& multiply_inv(const trans_perspective& m);
// Multiply inverse of "m" by "this" and assign the result to "this"
const trans_perspective& premultiply_inv(const trans_perspective& m);
// Multiply the matrix by another one
const trans_perspective& multiply(const trans_affine& m);
// Multiply "m" by "this" and assign the result to "this"
const trans_perspective& premultiply(const trans_affine& m);
// Multiply the matrix by inverse of another one
const trans_perspective& multiply_inv(const trans_affine& m);
// Multiply inverse of "m" by "this" and assign the result to "this"
const trans_perspective& premultiply_inv(const trans_affine& m);
//--------------------------------------------------------- Load/Store
void store_to(double* m) const;
const trans_perspective& load_from(const double* m);
//---------------------------------------------------------- Operators
// Multiply the matrix by another one
const trans_perspective& operator *= (const trans_perspective& m)
{
return multiply(m);
}
const trans_perspective& operator *= (const trans_affine& m)
{
return multiply(m);
}
// Multiply the matrix by inverse of another one
const trans_perspective& operator /= (const trans_perspective& m)
{
return multiply_inv(m);
}
const trans_perspective& operator /= (const trans_affine& m)
{
return multiply_inv(m);
}
// Multiply the matrix by another one and return
// the result in a separete matrix.
trans_perspective operator * (const trans_perspective& m) const
{
return trans_perspective(*this).multiply(m);
}
trans_perspective operator * (const trans_affine& m) const
{
return trans_perspective(*this).multiply(m);
}
// Multiply the matrix by inverse of another one
// and return the result in a separete matrix.
trans_perspective operator / (const trans_perspective& m) const
{
return trans_perspective(*this).multiply_inv(m);
}
trans_perspective operator / (const trans_affine& m) const
{
return trans_perspective(*this).multiply_inv(m);
}
// Calculate and return the inverse matrix
trans_perspective operator ~ () const
{
trans_perspective ret = *this;
ret.invert();
return ret;
}
// Equal operator with default epsilon
bool operator == (const trans_perspective& m) const
{
return is_equal(m, affine_epsilon);
}
// Not Equal operator with default epsilon
bool operator != (const trans_perspective& m) const
{
return !is_equal(m, affine_epsilon);
}
//---------------------------------------------------- Transformations
// Direct transformation of x and y
void transform(double* x, double* y) const;
// Direct transformation of x and y, affine part only
void transform_affine(double* x, double* y) const;
// Direct transformation of x and y, 2x2 matrix only, no translation
void transform_2x2(double* x, double* y) const;
// Inverse transformation of x and y. It works slow because
// it explicitly inverts the matrix on every call. For massive
// operations it's better to invert() the matrix and then use
// direct transformations.
void inverse_transform(double* x, double* y) const;
//---------------------------------------------------------- Auxiliary
const trans_perspective& from_affine(const trans_affine& a);
double determinant() const;
double determinant_reciprocal() const;
bool is_valid(double epsilon = affine_epsilon) const;
bool is_identity(double epsilon = affine_epsilon) const;
bool is_equal(const trans_perspective& m,
double epsilon = affine_epsilon) const;
// Determine the major affine parameters. Use with caution
// considering possible degenerate cases.
double scale() const;
double rotation() const;
void translation(double* dx, double* dy) const;
void scaling(double* x, double* y) const;
void scaling_abs(double* x, double* y) const;
//--------------------------------------------------------------------
class iterator_x
{
double den;
double den_step;
double nom_x;
double nom_x_step;
double nom_y;
double nom_y_step;
public:
double x;
double y;
iterator_x() {}
iterator_x(double px, double py, double step, const trans_perspective& m) :
den(px * m.w0 + py * m.w1 + m.w2),
den_step(m.w0 * step),
nom_x(px * m.sx + py * m.shx + m.tx),
nom_x_step(step * m.sx),
nom_y(px * m.shy + py * m.sy + m.ty),
nom_y_step(step * m.shy),
x(nom_x / den),
y(nom_y / den)
{}
void operator ++ ()
{
den += den_step;
nom_x += nom_x_step;
nom_y += nom_y_step;
double d = 1.0 / den;
x = nom_x * d;
y = nom_y * d;
}
};
//--------------------------------------------------------------------
iterator_x begin(double x, double y, double step) const
{
return iterator_x(x, y, step, *this);
}
};
//------------------------------------------------------------------------
inline bool trans_perspective::square_to_quad(const double* q)
{
double dx = q[0] - q[2] + q[4] - q[6];
double dy = q[1] - q[3] + q[5] - q[7];
if(dx == 0.0 && dy == 0.0)
{
// Affine case (parallelogram)
//---------------
sx = q[2] - q[0];
shy = q[3] - q[1];
w0 = 0.0;
shx = q[4] - q[2];
sy = q[5] - q[3];
w1 = 0.0;
tx = q[0];
ty = q[1];
w2 = 1.0;
}
else
{
double dx1 = q[2] - q[4];
double dy1 = q[3] - q[5];
double dx2 = q[6] - q[4];
double dy2 = q[7] - q[5];
double den = dx1 * dy2 - dx2 * dy1;
if(den == 0.0)
{
// Singular case
//---------------
sx = shy = w0 = shx = sy = w1 = tx = ty = w2 = 0.0;
return false;
}
// General case
//---------------
double u = (dx * dy2 - dy * dx2) / den;
double v = (dy * dx1 - dx * dy1) / den;
sx = q[2] - q[0] + u * q[2];
shy = q[3] - q[1] + u * q[3];
w0 = u;
shx = q[6] - q[0] + v * q[6];
sy = q[7] - q[1] + v * q[7];
w1 = v;
tx = q[0];
ty = q[1];
w2 = 1.0;
}
return true;
}
//------------------------------------------------------------------------
inline bool trans_perspective::invert()
{
double d0 = sy * w2 - w1 * ty;
double d1 = w0 * ty - shy * w2;
double d2 = shy * w1 - w0 * sy;
double d = sx * d0 + shx * d1 + tx * d2;
if(d == 0.0)
{
sx = shy = w0 = shx = sy = w1 = tx = ty = w2 = 0.0;
return false;
}
d = 1.0 / d;
trans_perspective a = *this;
sx = d * d0;
shy = d * d1;
w0 = d * d2;
shx = d * (a.w1 *a.tx - a.shx*a.w2);
sy = d * (a.sx *a.w2 - a.w0 *a.tx);
w1 = d * (a.w0 *a.shx - a.sx *a.w1);
tx = d * (a.shx*a.ty - a.sy *a.tx);
ty = d * (a.shy*a.tx - a.sx *a.ty);
w2 = d * (a.sx *a.sy - a.shy*a.shx);
return true;
}
//------------------------------------------------------------------------
inline bool trans_perspective::quad_to_square(const double* q)
{
if(!square_to_quad(q)) return false;
invert();
return true;
}
//------------------------------------------------------------------------
inline bool trans_perspective::quad_to_quad(const double* qs,
const double* qd)
{
trans_perspective p;
if(! quad_to_square(qs)) return false;
if(!p.square_to_quad(qd)) return false;
multiply(p);
return true;
}
//------------------------------------------------------------------------
inline bool trans_perspective::rect_to_quad(double x1, double y1,
double x2, double y2,
const double* q)
{
double r[8];
r[0] = r[6] = x1;
r[2] = r[4] = x2;
r[1] = r[3] = y1;
r[5] = r[7] = y2;
return quad_to_quad(r, q);
}
//------------------------------------------------------------------------
inline bool trans_perspective::quad_to_rect(const double* q,
double x1, double y1,
double x2, double y2)
{
double r[8];
r[0] = r[6] = x1;
r[2] = r[4] = x2;
r[1] = r[3] = y1;
r[5] = r[7] = y2;
return quad_to_quad(q, r);
}
//------------------------------------------------------------------------
inline trans_perspective::trans_perspective(double x1, double y1,
double x2, double y2,
const double* quad)
{
rect_to_quad(x1, y1, x2, y2, quad);
}
//------------------------------------------------------------------------
inline trans_perspective::trans_perspective(const double* quad,
double x1, double y1,
double x2, double y2)
{
quad_to_rect(quad, x1, y1, x2, y2);
}
//------------------------------------------------------------------------
inline trans_perspective::trans_perspective(const double* src,
const double* dst)
{
quad_to_quad(src, dst);
}
//------------------------------------------------------------------------
inline const trans_perspective& trans_perspective::reset()
{
sx = 1; shy = 0; w0 = 0;
shx = 0; sy = 1; w1 = 0;
tx = 0; ty = 0; w2 = 1;
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective&
trans_perspective::multiply(const trans_perspective& a)
{
trans_perspective b = *this;
sx = a.sx *b.sx + a.shx*b.shy + a.tx*b.w0;
shx = a.sx *b.shx + a.shx*b.sy + a.tx*b.w1;
tx = a.sx *b.tx + a.shx*b.ty + a.tx*b.w2;
shy = a.shy*b.sx + a.sy *b.shy + a.ty*b.w0;
sy = a.shy*b.shx + a.sy *b.sy + a.ty*b.w1;
ty = a.shy*b.tx + a.sy *b.ty + a.ty*b.w2;
w0 = a.w0 *b.sx + a.w1 *b.shy + a.w2*b.w0;
w1 = a.w0 *b.shx + a.w1 *b.sy + a.w2*b.w1;
w2 = a.w0 *b.tx + a.w1 *b.ty + a.w2*b.w2;
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective&
trans_perspective::multiply(const trans_affine& a)
{
trans_perspective b = *this;
sx = a.sx *b.sx + a.shx*b.shy + a.tx*b.w0;
shx = a.sx *b.shx + a.shx*b.sy + a.tx*b.w1;
tx = a.sx *b.tx + a.shx*b.ty + a.tx*b.w2;
shy = a.shy*b.sx + a.sy *b.shy + a.ty*b.w0;
sy = a.shy*b.shx + a.sy *b.sy + a.ty*b.w1;
ty = a.shy*b.tx + a.sy *b.ty + a.ty*b.w2;
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective&
trans_perspective::premultiply(const trans_perspective& b)
{
trans_perspective a = *this;
sx = a.sx *b.sx + a.shx*b.shy + a.tx*b.w0;
shx = a.sx *b.shx + a.shx*b.sy + a.tx*b.w1;
tx = a.sx *b.tx + a.shx*b.ty + a.tx*b.w2;
shy = a.shy*b.sx + a.sy *b.shy + a.ty*b.w0;
sy = a.shy*b.shx + a.sy *b.sy + a.ty*b.w1;
ty = a.shy*b.tx + a.sy *b.ty + a.ty*b.w2;
w0 = a.w0 *b.sx + a.w1 *b.shy + a.w2*b.w0;
w1 = a.w0 *b.shx + a.w1 *b.sy + a.w2*b.w1;
w2 = a.w0 *b.tx + a.w1 *b.ty + a.w2*b.w2;
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective&
trans_perspective::premultiply(const trans_affine& b)
{
trans_perspective a = *this;
sx = a.sx *b.sx + a.shx*b.shy;
shx = a.sx *b.shx + a.shx*b.sy;
tx = a.sx *b.tx + a.shx*b.ty + a.tx;
shy = a.shy*b.sx + a.sy *b.shy;
sy = a.shy*b.shx + a.sy *b.sy;
ty = a.shy*b.tx + a.sy *b.ty + a.ty;
w0 = a.w0 *b.sx + a.w1 *b.shy;
w1 = a.w0 *b.shx + a.w1 *b.sy;
w2 = a.w0 *b.tx + a.w1 *b.ty + a.w2;
return *this;
}
//------------------------------------------------------------------------
const trans_perspective&
trans_perspective::multiply_inv(const trans_perspective& m)
{
trans_perspective t = m;
t.invert();
return multiply(t);
}
//------------------------------------------------------------------------
const trans_perspective&
trans_perspective::multiply_inv(const trans_affine& m)
{
trans_affine t = m;
t.invert();
return multiply(t);
}
//------------------------------------------------------------------------
const trans_perspective&
trans_perspective::premultiply_inv(const trans_perspective& m)
{
trans_perspective t = m;
t.invert();
return *this = t.multiply(*this);
}
//------------------------------------------------------------------------
const trans_perspective&
trans_perspective::premultiply_inv(const trans_affine& m)
{
trans_perspective t(m);
t.invert();
return *this = t.multiply(*this);
}
//------------------------------------------------------------------------
inline const trans_perspective&
trans_perspective::translate(double x, double y)
{
tx += x;
ty += y;
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective& trans_perspective::rotate(double a)
{
multiply(trans_affine_rotation(a));
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective& trans_perspective::scale(double s)
{
multiply(trans_affine_scaling(s));
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective& trans_perspective::scale(double x, double y)
{
multiply(trans_affine_scaling(x, y));
return *this;
}
//------------------------------------------------------------------------
inline void trans_perspective::transform(double* px, double* py) const
{
double x = *px;
double y = *py;
double m = 1.0 / (x*w0 + y*w1 + w2);
*px = m * (x*sx + y*shx + tx);
*py = m * (x*shy + y*sy + ty);
}
//------------------------------------------------------------------------
inline void trans_perspective::transform_affine(double* x, double* y) const
{
double tmp = *x;
*x = tmp * sx + *y * shx + tx;
*y = tmp * shy + *y * sy + ty;
}
//------------------------------------------------------------------------
inline void trans_perspective::transform_2x2(double* x, double* y) const
{
double tmp = *x;
*x = tmp * sx + *y * shx;
*y = tmp * shy + *y * sy;
}
//------------------------------------------------------------------------
inline void trans_perspective::inverse_transform(double* x, double* y) const
{
trans_perspective t(*this);
if(t.invert()) t.transform(x, y);
}
//------------------------------------------------------------------------
inline void trans_perspective::store_to(double* m) const
{
*m++ = sx; *m++ = shy; *m++ = w0;
*m++ = shx; *m++ = sy; *m++ = w1;
*m++ = tx; *m++ = ty; *m++ = w2;
}
//------------------------------------------------------------------------
inline const trans_perspective& trans_perspective::load_from(const double* m)
{
sx = *m++; shy = *m++; w0 = *m++;
shx = *m++; sy = *m++; w1 = *m++;
tx = *m++; ty = *m++; w2 = *m++;
return *this;
}
//------------------------------------------------------------------------
inline const trans_perspective&
trans_perspective::from_affine(const trans_affine& a)
{
sx = a.sx; shy = a.shy; w0 = 0;
shx = a.shx; sy = a.sy; w1 = 0;
tx = a.tx; ty = a.ty; w2 = 1;
return *this;
}
//------------------------------------------------------------------------
inline double trans_perspective::determinant() const
{
return sx * (sy * w2 - ty * w1) +
shx * (ty * w0 - shy * w2) +
tx * (shy * w1 - sy * w0);
}
//------------------------------------------------------------------------
inline double trans_perspective::determinant_reciprocal() const
{
return 1.0 / determinant();
}
//------------------------------------------------------------------------
inline bool trans_perspective::is_valid(double epsilon) const
{
return fabs(sx) > epsilon && fabs(sy) > epsilon && fabs(w2) > epsilon;
}
//------------------------------------------------------------------------
inline bool trans_perspective::is_identity(double epsilon) const
{
return is_equal_eps(sx, 1.0, epsilon) &&
is_equal_eps(shy, 0.0, epsilon) &&
is_equal_eps(w0, 0.0, epsilon) &&
is_equal_eps(shx, 0.0, epsilon) &&
is_equal_eps(sy, 1.0, epsilon) &&
is_equal_eps(w1, 0.0, epsilon) &&
is_equal_eps(tx, 0.0, epsilon) &&
is_equal_eps(ty, 0.0, epsilon) &&
is_equal_eps(w2, 1.0, epsilon);
}
//------------------------------------------------------------------------
inline bool trans_perspective::is_equal(const trans_perspective& m,
double epsilon) const
{
return is_equal_eps(sx, m.sx, epsilon) &&
is_equal_eps(shy, m.shy, epsilon) &&
is_equal_eps(w0, m.w0, epsilon) &&
is_equal_eps(shx, m.shx, epsilon) &&
is_equal_eps(sy, m.sy, epsilon) &&
is_equal_eps(w1, m.w1, epsilon) &&
is_equal_eps(tx, m.tx, epsilon) &&
is_equal_eps(ty, m.ty, epsilon) &&
is_equal_eps(w2, m.w2, epsilon);
}
//------------------------------------------------------------------------
inline double trans_perspective::scale() const
{
double x = 0.707106781 * sx + 0.707106781 * shx;
double y = 0.707106781 * shy + 0.707106781 * sy;
return sqrt(x*x + y*y);
}
//------------------------------------------------------------------------
inline double trans_perspective::rotation() const
{
double x1 = 0.0;
double y1 = 0.0;
double x2 = 1.0;
double y2 = 0.0;
transform(&x1, &y1);
transform(&x2, &y2);
return atan2(y2-y1, x2-x1);
}
//------------------------------------------------------------------------
void trans_perspective::translation(double* dx, double* dy) const
{
*dx = tx;
*dy = ty;
}
//------------------------------------------------------------------------
void trans_perspective::scaling(double* x, double* y) const
{
double x1 = 0.0;
double y1 = 0.0;
double x2 = 1.0;
double y2 = 1.0;
trans_perspective t(*this);
t *= trans_affine_rotation(-rotation());
t.transform(&x1, &y1);
t.transform(&x2, &y2);
*x = x2 - x1;
*y = y2 - y1;
}
//------------------------------------------------------------------------
void trans_perspective::scaling_abs(double* x, double* y) const
{
*x = sqrt(sx * sx + shx * shx);
*y = sqrt(shy * shy + sy * sy);
}
}
#endif

97
xs/src/agg/agg_trans_single_path.h
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@ -1,97 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_TRANS_SINGLE_PATH_INCLUDED
#define AGG_TRANS_SINGLE_PATH_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
// See also: agg_trans_single_path.cpp
//
//-------------------------------------------------------trans_single_path
class trans_single_path
{
enum status_e
{
initial,
making_path,
ready
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
trans_single_path();
//--------------------------------------------------------------------
void base_length(double v) { m_base_length = v; }
double base_length() const { return m_base_length; }
//--------------------------------------------------------------------
void preserve_x_scale(bool f) { m_preserve_x_scale = f; }
bool preserve_x_scale() const { return m_preserve_x_scale; }
//--------------------------------------------------------------------
void reset();
void move_to(double x, double y);
void line_to(double x, double y);
void finalize_path();
//--------------------------------------------------------------------
template<class VertexSource>
void add_path(VertexSource& vs, unsigned path_id=0)
{
double x;
double y;
unsigned cmd;
vs.rewind(path_id);
while(!is_stop(cmd = vs.vertex(&x, &y)))
{
if(is_move_to(cmd))
{
move_to(x, y);
}
else
{
if(is_vertex(cmd))
{
line_to(x, y);
}
}
}
finalize_path();
}
//--------------------------------------------------------------------
double total_length() const;
void transform(double *x, double *y) const;
private:
vertex_storage m_src_vertices;
double m_base_length;
double m_kindex;
status_e m_status;
bool m_preserve_x_scale;
};
}
#endif

303
xs/src/agg/agg_trans_viewport.h
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@ -1,303 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Viewport transformer - simple orthogonal conversions from world coordinates
// to screen (device) ones.
//
//----------------------------------------------------------------------------
#ifndef AGG_TRANS_VIEWPORT_INCLUDED
#define AGG_TRANS_VIEWPORT_INCLUDED
#include <string.h>
#include "agg_trans_affine.h"
namespace agg
{
enum aspect_ratio_e
{
aspect_ratio_stretch,
aspect_ratio_meet,
aspect_ratio_slice
};
//----------------------------------------------------------trans_viewport
class trans_viewport
{
public:
//-------------------------------------------------------------------
trans_viewport() :
m_world_x1(0.0),
m_world_y1(0.0),
m_world_x2(1.0),
m_world_y2(1.0),
m_device_x1(0.0),
m_device_y1(0.0),
m_device_x2(1.0),
m_device_y2(1.0),
m_aspect(aspect_ratio_stretch),
m_is_valid(true),
m_align_x(0.5),
m_align_y(0.5),
m_wx1(0.0),
m_wy1(0.0),
m_wx2(1.0),
m_wy2(1.0),
m_dx1(0.0),
m_dy1(0.0),
m_kx(1.0),
m_ky(1.0)
{}
//-------------------------------------------------------------------
void preserve_aspect_ratio(double alignx,
double aligny,
aspect_ratio_e aspect)
{
m_align_x = alignx;
m_align_y = aligny;
m_aspect = aspect;
update();
}
//-------------------------------------------------------------------
void device_viewport(double x1, double y1, double x2, double y2)
{
m_device_x1 = x1;
m_device_y1 = y1;
m_device_x2 = x2;
m_device_y2 = y2;
update();
}
//-------------------------------------------------------------------
void world_viewport(double x1, double y1, double x2, double y2)
{
m_world_x1 = x1;
m_world_y1 = y1;
m_world_x2 = x2;
m_world_y2 = y2;
update();
}
//-------------------------------------------------------------------
void device_viewport(double* x1, double* y1, double* x2, double* y2) const
{
*x1 = m_device_x1;
*y1 = m_device_y1;
*x2 = m_device_x2;
*y2 = m_device_y2;
}
//-------------------------------------------------------------------
void world_viewport(double* x1, double* y1, double* x2, double* y2) const
{
*x1 = m_world_x1;
*y1 = m_world_y1;
*x2 = m_world_x2;
*y2 = m_world_y2;
}
//-------------------------------------------------------------------
void world_viewport_actual(double* x1, double* y1,
double* x2, double* y2) const
{
*x1 = m_wx1;
*y1 = m_wy1;
*x2 = m_wx2;
*y2 = m_wy2;
}
//-------------------------------------------------------------------
bool is_valid() const { return m_is_valid; }
double align_x() const { return m_align_x; }
double align_y() const { return m_align_y; }
aspect_ratio_e aspect_ratio() const { return m_aspect; }
//-------------------------------------------------------------------
void transform(double* x, double* y) const
{
*x = (*x - m_wx1) * m_kx + m_dx1;
*y = (*y - m_wy1) * m_ky + m_dy1;
}
//-------------------------------------------------------------------
void transform_scale_only(double* x, double* y) const
{
*x *= m_kx;
*y *= m_ky;
}
//-------------------------------------------------------------------
void inverse_transform(double* x, double* y) const
{
*x = (*x - m_dx1) / m_kx + m_wx1;
*y = (*y - m_dy1) / m_ky + m_wy1;
}
//-------------------------------------------------------------------
void inverse_transform_scale_only(double* x, double* y) const
{
*x /= m_kx;
*y /= m_ky;
}
//-------------------------------------------------------------------
double device_dx() const { return m_dx1 - m_wx1 * m_kx; }
double device_dy() const { return m_dy1 - m_wy1 * m_ky; }
//-------------------------------------------------------------------
double scale_x() const
{
return m_kx;
}
//-------------------------------------------------------------------
double scale_y() const
{
return m_ky;
}
//-------------------------------------------------------------------
double scale() const
{
return (m_kx + m_ky) * 0.5;
}
//-------------------------------------------------------------------
trans_affine to_affine() const
{
trans_affine mtx = trans_affine_translation(-m_wx1, -m_wy1);
mtx *= trans_affine_scaling(m_kx, m_ky);
mtx *= trans_affine_translation(m_dx1, m_dy1);
return mtx;
}
//-------------------------------------------------------------------
trans_affine to_affine_scale_only() const
{
return trans_affine_scaling(m_kx, m_ky);
}
//-------------------------------------------------------------------
unsigned byte_size() const
{
return sizeof(*this);
}
void serialize(int8u* ptr) const
{
memcpy(ptr, this, sizeof(*this));
}
void deserialize(const int8u* ptr)
{
memcpy(this, ptr, sizeof(*this));
}
private:
void update();
double m_world_x1;
double m_world_y1;
double m_world_x2;
double m_world_y2;
double m_device_x1;
double m_device_y1;
double m_device_x2;
double m_device_y2;
aspect_ratio_e m_aspect;
bool m_is_valid;
double m_align_x;
double m_align_y;
double m_wx1;
double m_wy1;
double m_wx2;
double m_wy2;
double m_dx1;
double m_dy1;
double m_kx;
double m_ky;
};
//-----------------------------------------------------------------------
inline void trans_viewport::update()
{
const double epsilon = 1e-30;
if(fabs(m_world_x1 - m_world_x2) < epsilon ||
fabs(m_world_y1 - m_world_y2) < epsilon ||
fabs(m_device_x1 - m_device_x2) < epsilon ||
fabs(m_device_y1 - m_device_y2) < epsilon)
{
m_wx1 = m_world_x1;
m_wy1 = m_world_y1;
m_wx2 = m_world_x1 + 1.0;
m_wy2 = m_world_y2 + 1.0;
m_dx1 = m_device_x1;
m_dy1 = m_device_y1;
m_kx = 1.0;
m_ky = 1.0;
m_is_valid = false;
return;
}
double world_x1 = m_world_x1;
double world_y1 = m_world_y1;
double world_x2 = m_world_x2;
double world_y2 = m_world_y2;
double device_x1 = m_device_x1;
double device_y1 = m_device_y1;
double device_x2 = m_device_x2;
double device_y2 = m_device_y2;
if(m_aspect != aspect_ratio_stretch)
{
double d;
m_kx = (device_x2 - device_x1) / (world_x2 - world_x1);
m_ky = (device_y2 - device_y1) / (world_y2 - world_y1);
if((m_aspect == aspect_ratio_meet) == (m_kx < m_ky))
{
d = (world_y2 - world_y1) * m_ky / m_kx;
world_y1 += (world_y2 - world_y1 - d) * m_align_y;
world_y2 = world_y1 + d;
}
else
{
d = (world_x2 - world_x1) * m_kx / m_ky;
world_x1 += (world_x2 - world_x1 - d) * m_align_x;
world_x2 = world_x1 + d;
}
}
m_wx1 = world_x1;
m_wy1 = world_y1;
m_wx2 = world_x2;
m_wy2 = world_y2;
m_dx1 = device_x1;
m_dy1 = device_y1;
m_kx = (device_x2 - device_x1) / (world_x2 - world_x1);
m_ky = (device_y2 - device_y1) / (world_y2 - world_y1);
m_is_valid = true;
}
}
#endif

56
xs/src/agg/agg_trans_warp_magnifier.h
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@ -1,56 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_WARP_MAGNIFIER_INCLUDED
#define AGG_WARP_MAGNIFIER_INCLUDED
namespace agg
{
//----------------------------------------------------trans_warp_magnifier
//
// See Inmplementation agg_trans_warp_magnifier.cpp
//
class trans_warp_magnifier
{
public:
trans_warp_magnifier() : m_xc(0.0), m_yc(0.0), m_magn(1.0), m_radius(1.0) {}
void center(double x, double y) { m_xc = x; m_yc = y; }
void magnification(double m) { m_magn = m; }
void radius(double r) { m_radius = r; }
double xc() const { return m_xc; }
double yc() const { return m_yc; }
double magnification() const { return m_magn; }
double radius() const { return m_radius; }
void transform(double* x, double* y) const;
void inverse_transform(double* x, double* y) const;
private:
double m_xc;
double m_yc;
double m_magn;
double m_radius;
};
}
#endif

74
xs/src/agg/agg_vcgen_bspline.h
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@ -1,74 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_BSPLINE_INCLUDED
#define AGG_VCGEN_BSPLINE_INCLUDED
#include "agg_basics.h"
#include "agg_array.h"
#include "agg_bspline.h"
namespace agg
{
//==========================================================vcgen_bspline
class vcgen_bspline
{
enum status_e
{
initial,
ready,
polygon,
end_poly,
stop
};
public:
typedef pod_bvector<point_d, 6> vertex_storage;
vcgen_bspline();
void interpolation_step(double v) { m_interpolation_step = v; }
double interpolation_step() const { return m_interpolation_step; }
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_bspline(const vcgen_bspline&);
const vcgen_bspline& operator = (const vcgen_bspline&);
vertex_storage m_src_vertices;
bspline m_spline_x;
bspline m_spline_y;
double m_interpolation_step;
unsigned m_closed;
status_e m_status;
unsigned m_src_vertex;
double m_cur_abscissa;
double m_max_abscissa;
};
}
#endif

94
xs/src/agg/agg_vcgen_contour.h
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@ -1,94 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_CONTOUR_INCLUDED
#define AGG_VCGEN_CONTOUR_INCLUDED
#include "agg_math_stroke.h"
namespace agg
{
//----------------------------------------------------------vcgen_contour
//
// See Implementation agg_vcgen_contour.cpp
//
class vcgen_contour
{
enum status_e
{
initial,
ready,
outline,
out_vertices,
end_poly,
stop
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
typedef pod_bvector<point_d, 6> coord_storage;
vcgen_contour();
void line_cap(line_cap_e lc) { m_stroker.line_cap(lc); }
void line_join(line_join_e lj) { m_stroker.line_join(lj); }
void inner_join(inner_join_e ij) { m_stroker.inner_join(ij); }
line_cap_e line_cap() const { return m_stroker.line_cap(); }
line_join_e line_join() const { return m_stroker.line_join(); }
inner_join_e inner_join() const { return m_stroker.inner_join(); }
void width(double w) { m_stroker.width(m_width = w); }
void miter_limit(double ml) { m_stroker.miter_limit(ml); }
void miter_limit_theta(double t) { m_stroker.miter_limit_theta(t); }
void inner_miter_limit(double ml) { m_stroker.inner_miter_limit(ml); }
void approximation_scale(double as) { m_stroker.approximation_scale(as); }
double width() const { return m_width; }
double miter_limit() const { return m_stroker.miter_limit(); }
double inner_miter_limit() const { return m_stroker.inner_miter_limit(); }
double approximation_scale() const { return m_stroker.approximation_scale(); }
void auto_detect_orientation(bool v) { m_auto_detect = v; }
bool auto_detect_orientation() const { return m_auto_detect; }
// Generator interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_contour(const vcgen_contour&);
const vcgen_contour& operator = (const vcgen_contour&);
math_stroke<coord_storage> m_stroker;
double m_width;
vertex_storage m_src_vertices;
coord_storage m_out_vertices;
status_e m_status;
unsigned m_src_vertex;
unsigned m_out_vertex;
unsigned m_closed;
unsigned m_orientation;
bool m_auto_detect;
};
}
#endif

93
xs/src/agg/agg_vcgen_dash.h
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@ -1,93 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
//
// Line dash generator
//
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_DASH_INCLUDED
#define AGG_VCGEN_DASH_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//---------------------------------------------------------------vcgen_dash
//
// See Implementation agg_vcgen_dash.cpp
//
class vcgen_dash
{
enum max_dashes_e
{
max_dashes = 32
};
enum status_e
{
initial,
ready,
polyline,
stop
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
vcgen_dash();
void remove_all_dashes();
void add_dash(double dash_len, double gap_len);
void dash_start(double ds);
void shorten(double s) { m_shorten = s; }
double shorten() const { return m_shorten; }
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_dash(const vcgen_dash&);
const vcgen_dash& operator = (const vcgen_dash&);
void calc_dash_start(double ds);
double m_dashes[max_dashes];
double m_total_dash_len;
unsigned m_num_dashes;
double m_dash_start;
double m_shorten;
double m_curr_dash_start;
unsigned m_curr_dash;
double m_curr_rest;
const vertex_dist* m_v1;
const vertex_dist* m_v2;
vertex_storage m_src_vertices;
unsigned m_closed;
status_e m_status;
unsigned m_src_vertex;
};
}
#endif

66
xs/src/agg/agg_vcgen_markers_term.h
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@ -1,66 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_MARKERS_TERM_INCLUDED
#define AGG_VCGEN_MARKERS_TERM_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//======================================================vcgen_markers_term
//
// See Implemantation agg_vcgen_markers_term.cpp
// Terminal markers generator (arrowhead/arrowtail)
//
//------------------------------------------------------------------------
class vcgen_markers_term
{
public:
vcgen_markers_term() : m_curr_id(0), m_curr_idx(0) {}
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_markers_term(const vcgen_markers_term&);
const vcgen_markers_term& operator = (const vcgen_markers_term&);
struct coord_type
{
double x, y;
coord_type() {}
coord_type(double x_, double y_) : x(x_), y(y_) {}
};
typedef pod_bvector<coord_type, 6> coord_storage;
coord_storage m_markers;
unsigned m_curr_id;
unsigned m_curr_idx;
};
}
#endif

87
xs/src/agg/agg_vcgen_smooth_poly1.h
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@ -1,87 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_SMOOTH_POLY1_INCLUDED
#define AGG_VCGEN_SMOOTH_POLY1_INCLUDED
#include "agg_basics.h"
#include "agg_vertex_sequence.h"
namespace agg
{
//======================================================vcgen_smooth_poly1
//
// See Implementation agg_vcgen_smooth_poly1.cpp
// Smooth polygon generator
//
//------------------------------------------------------------------------
class vcgen_smooth_poly1
{
enum status_e
{
initial,
ready,
polygon,
ctrl_b,
ctrl_e,
ctrl1,
ctrl2,
end_poly,
stop
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
vcgen_smooth_poly1();
void smooth_value(double v) { m_smooth_value = v * 0.5; }
double smooth_value() const { return m_smooth_value * 2.0; }
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_smooth_poly1(const vcgen_smooth_poly1&);
const vcgen_smooth_poly1& operator = (const vcgen_smooth_poly1&);
void calculate(const vertex_dist& v0,
const vertex_dist& v1,
const vertex_dist& v2,
const vertex_dist& v3);
vertex_storage m_src_vertices;
double m_smooth_value;
unsigned m_closed;
status_e m_status;
unsigned m_src_vertex;
double m_ctrl1_x;
double m_ctrl1_y;
double m_ctrl2_x;
double m_ctrl2_y;
};
}
#endif

102
xs/src/agg/agg_vcgen_stroke.h
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@ -1,102 +0,0 @@
//----------------------------------------------------------------------------
// Anti-Grain Geometry - Version 2.4
// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
//
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
//
//----------------------------------------------------------------------------
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
//----------------------------------------------------------------------------
#ifndef AGG_VCGEN_STROKE_INCLUDED
#define AGG_VCGEN_STROKE_INCLUDED
#include "agg_math_stroke.h"
namespace agg
{
//============================================================vcgen_stroke
//
// See Implementation agg_vcgen_stroke.cpp
// Stroke generator
//
//------------------------------------------------------------------------
class vcgen_stroke
{
enum status_e
{
initial,
ready,
cap1,
cap2,
outline1,
close_first,
outline2,
out_vertices,
end_poly1,
end_poly2,
stop
};
public:
typedef vertex_sequence<vertex_dist, 6> vertex_storage;
typedef pod_bvector<point_d, 6> coord_storage;
vcgen_stroke();
void line_cap(line_cap_e lc) { m_stroker.line_cap(lc); }
void line_join(line_join_e lj) { m_stroker.line_join(lj); }
void inner_join(inner_join_e ij) { m_stroker.inner_join(ij); }
line_cap_e line_cap() const { return m_stroker.line_cap(); }
line_join_e line_join() const { return m_stroker.line_join(); }
inner_join_e inner_join() const { return m_stroker.inner_join(); }
void width(double w) { m_stroker.width(w); }
void miter_limit(double ml) { m_stroker.miter_limit(ml); }
void miter_limit_theta(double t) { m_stroker.miter_limit_theta(t); }
void inner_miter_limit(double ml) { m_stroker.inner_miter_limit(ml); }
void approximation_scale(double as) { m_stroker.approximation_scale(as); }
double width() const { return m_stroker.width(); }
double miter_limit() const { return m_stroker.miter_limit(); }
double inner_miter_limit() const { return m_stroker.inner_miter_limit(); }
double approximation_scale() const { return m_stroker.approximation_scale(); }
void shorten(double s) { m_shorten = s; }
double shorten() const { return m_shorten; }
// Vertex Generator Interface
void remove_all();
void add_vertex(double x, double y, unsigned cmd);
// Vertex Source Interface
void rewind(unsigned path_id);
unsigned vertex(double* x, double* y);
private:
vcgen_stroke(const vcgen_stroke&);
const vcgen_stroke& operator = (const vcgen_stroke&);
math_stroke<coord_storage> m_stroker;
vertex_storage m_src_vertices;
coord_storage m_out_vertices;
double m_shorten;
unsigned m_closed;
status_e m_status;
status_e m_prev_status;
unsigned m_src_vertex;
unsigned m_out_vertex;
};
}
#endif

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