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WIP: SVG import & rasterization

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Updated AntiGrain (agg) library to 2.5
Added agg_svg library from AntiGrain 2.5
added src/slic3r/Utils/SVGImport.cpp/hpp
This commit is contained in:
bubnikv 2019-02-07 12:06:51 +01:00
parent a2478b7faa
commit 9b15908a47
59 changed files with 10646 additions and 3586 deletions
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503
src/agg/agg_pixfmt_gray.h
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@ -1,16 +1,25 @@
//----------------------------------------------------------------------------
// 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.
//
//----------------------------------------------------------------------------
// Anti-Grain Geometry (AGG) - Version 2.5
// A high quality rendering engine for C++
// Copyright (C) 2002-2006 Maxim Shemanarev
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://www.antigrain.com
// http://antigrain.com
//
// AGG is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// AGG is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with AGG; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301, USA.
//----------------------------------------------------------------------------
//
// Adaptation for high precision colors has been sponsored by
@ -25,7 +34,8 @@
#define AGG_PIXFMT_GRAY_INCLUDED
#include <string.h>
#include "agg_pixfmt_base.h"
#include "agg_basics.h"
#include "agg_color_gray.h"
#include "agg_rendering_buffer.h"
namespace agg
@ -37,22 +47,12 @@ namespace agg
typedef ColorT color_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;
enum base_scale_e { base_shift = color_type::base_shift };
// Blend pixels using the non-premultiplied form of Alvy-Ray Smith's
// compositing function. Since the render buffer is opaque we skip the
// initial premultiply and final demultiply.
static AGG_INLINE void blend_pix(value_type* p,
value_type cv, value_type alpha, cover_type cover)
static AGG_INLINE void blend_pix(value_type* p, unsigned cv,
unsigned alpha, unsigned cover=0)
{
blend_pix(p, cv, color_type::mult_cover(alpha, cover));
}
static AGG_INLINE void blend_pix(value_type* p,
value_type cv, value_type alpha)
{
*p = color_type::lerp(*p, cv, alpha);
*p = (value_type)((((cv - calc_type(*p)) * alpha) + (calc_type(*p) << base_shift)) >> base_shift);
}
};
@ -63,21 +63,20 @@ namespace agg
typedef ColorT color_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;
enum base_scale_e { base_shift = color_type::base_shift };
// Blend pixels using the premultiplied form of Alvy-Ray Smith's
// compositing function.
static AGG_INLINE void blend_pix(value_type* p,
value_type cv, value_type alpha, cover_type cover)
static AGG_INLINE void blend_pix(value_type* p, unsigned cv,
unsigned alpha, unsigned cover)
{
blend_pix(p, color_type::mult_cover(cv, cover), color_type::mult_cover(alpha, cover));
alpha = color_type::base_mask - alpha;
cover = (cover + 1) << (base_shift - 8);
*p = (value_type)((*p * alpha + cv * cover) >> base_shift);
}
static AGG_INLINE void blend_pix(value_type* p,
value_type cv, value_type alpha)
static AGG_INLINE void blend_pix(value_type* p, unsigned cv,
unsigned alpha)
{
*p = color_type::prelerp(*p, cv, alpha);
*p = (value_type)(((*p * (color_type::base_mask - alpha)) >> base_shift) + cv);
}
};
@ -122,11 +121,10 @@ namespace agg
//=================================================pixfmt_alpha_blend_gray
template<class Blender, class RenBuf, unsigned Step = 1, unsigned Offset = 0>
template<class Blender, class RenBuf, unsigned Step=1, unsigned Offset=0>
class pixfmt_alpha_blend_gray
{
public:
typedef pixfmt_gray_tag pixfmt_category;
typedef RenBuf rbuf_type;
typedef typename rbuf_type::row_data row_data;
typedef Blender blender_type;
@ -134,117 +132,54 @@ namespace agg
typedef int order_type; // A fake one
typedef typename color_type::value_type value_type;
typedef typename color_type::calc_type calc_type;
enum
enum base_scale_e
{
num_components = 1,
pix_width = sizeof(value_type) * Step,
pix_step = Step,
pix_offset = Offset,
};
struct pixel_type
{
value_type c[num_components];
void set(value_type v)
{
c[0] = v;
}
void set(const color_type& color)
{
set(color.v);
}
void get(value_type& v) const
{
v = c[0];
}
color_type get() const
{
return color_type(c[0]);
}
pixel_type* next()
{
return (pixel_type*)(c + pix_step);
}
const pixel_type* next() const
{
return (const pixel_type*)(c + pix_step);
}
pixel_type* advance(int n)
{
return (pixel_type*)(c + n * pix_step);
}
const pixel_type* advance(int n) const
{
return (const pixel_type*)(c + n * pix_step);
}
base_shift = color_type::base_shift,
base_scale = color_type::base_scale,
base_mask = color_type::base_mask,
pix_width = sizeof(value_type),
pix_step = Step,
pix_offset = Offset
};
private:
//--------------------------------------------------------------------
AGG_INLINE void blend_pix(pixel_type* p,
value_type v, value_type a,
unsigned cover)
static AGG_INLINE void copy_or_blend_pix(value_type* p,
const color_type& c,
unsigned cover)
{
blender_type::blend_pix(p->c, v, a, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pix(pixel_type* p, value_type v, value_type a)
{
blender_type::blend_pix(p->c, v, a);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pix(pixel_type* p, const color_type& c, unsigned cover)
{
blender_type::blend_pix(p->c, c.v, c.a, cover);
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pix(pixel_type* p, const color_type& c)
{
blender_type::blend_pix(p->c, c.v, c.a);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c, unsigned cover)
{
if (!c.is_transparent())
if (c.a)
{
if (c.is_opaque() && cover == cover_mask)
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
p->set(c);
*p = c.v;
}
else
{
blend_pix(p, c, cover);
Blender::blend_pix(p, c.v, alpha, cover);
}
}
}
//--------------------------------------------------------------------
AGG_INLINE void copy_or_blend_pix(pixel_type* p, const color_type& c)
static AGG_INLINE void copy_or_blend_pix(value_type* p,
const color_type& c)
{
if (!c.is_transparent())
if (c.a)
{
if (c.is_opaque())
if(c.a == base_mask)
{
p->set(c);
*p = c.v;
}
else
{
blend_pix(p, c);
Blender::blend_pix(p, c.v, c.a);
}
}
}
public:
//--------------------------------------------------------------------
explicit pixfmt_alpha_blend_gray(rbuf_type& rb) :
@ -257,7 +192,7 @@ namespace agg
bool attach(PixFmt& pixf, int x1, int y1, int x2, int y2)
{
rect_i r(x1, y1, x2, y2);
if (r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1)))
if(r.clip(rect_i(0, 0, pixf.width()-1, pixf.height()-1)))
{
int stride = pixf.stride();
m_rbuf->attach(pixf.pix_ptr(r.x1, stride < 0 ? r.y2 : r.y1),
@ -275,98 +210,61 @@ namespace agg
AGG_INLINE int stride() const { return m_rbuf->stride(); }
//--------------------------------------------------------------------
int8u* row_ptr(int y) { return m_rbuf->row_ptr(y); }
int8u* row_ptr(int y) { return m_rbuf->row_ptr(y); }
const int8u* row_ptr(int y) const { return m_rbuf->row_ptr(y); }
row_data row(int y) const { return m_rbuf->row(y); }
//--------------------------------------------------------------------
AGG_INLINE int8u* pix_ptr(int x, int y)
{
return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
}
AGG_INLINE const int8u* pix_ptr(int x, int y) const
{
return m_rbuf->row_ptr(y) + sizeof(value_type) * (x * pix_step + pix_offset);
}
// Return pointer to pixel value, forcing row to be allocated.
AGG_INLINE pixel_type* pix_value_ptr(int x, int y, unsigned len)
const int8u* pix_ptr(int x, int y) const
{
return (pixel_type*)(m_rbuf->row_ptr(x, y, len) + sizeof(value_type) * (x * pix_step + pix_offset));
return m_rbuf->row_ptr(y) + x * Step + Offset;
}
// Return pointer to pixel value, or null if row not allocated.
AGG_INLINE const pixel_type* pix_value_ptr(int x, int y) const
int8u* pix_ptr(int x, int y)
{
int8u* p = m_rbuf->row_ptr(y);
return p ? (pixel_type*)(p + sizeof(value_type) * (x * pix_step + pix_offset)) : 0;
}
// Get pixel pointer from raw buffer pointer.
AGG_INLINE static pixel_type* pix_value_ptr(void* p)
{
return (pixel_type*)((value_type*)p + pix_offset);
}
// Get pixel pointer from raw buffer pointer.
AGG_INLINE static const pixel_type* pix_value_ptr(const void* p)
{
return (const pixel_type*)((const value_type*)p + pix_offset);
}
//--------------------------------------------------------------------
AGG_INLINE static void write_plain_color(void* p, color_type c)
{
// Grayscale formats are implicitly premultiplied.
c.premultiply();
pix_value_ptr(p)->set(c);
}
//--------------------------------------------------------------------
AGG_INLINE static color_type read_plain_color(const void* p)
{
return pix_value_ptr(p)->get();
return m_rbuf->row_ptr(y) + x * Step + Offset;
}
//--------------------------------------------------------------------
AGG_INLINE static void make_pix(int8u* p, const color_type& c)
{
((pixel_type*)p)->set(c);
*(value_type*)p = c.v;
}
//--------------------------------------------------------------------
AGG_INLINE color_type pixel(int x, int y) const
{
if (const pixel_type* p = pix_value_ptr(x, y))
{
return p->get();
}
return color_type::no_color();
value_type* p = (value_type*)m_rbuf->row_ptr(y) + x * Step + Offset;
return color_type(*p);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_pixel(int x, int y, const color_type& c)
{
pix_value_ptr(x, y, 1)->set(c);
*((value_type*)m_rbuf->row_ptr(x, y, 1) + x * Step + Offset) = c.v;
}
//--------------------------------------------------------------------
AGG_INLINE void blend_pixel(int x, int y, const color_type& c, int8u cover)
{
copy_or_blend_pix(pix_value_ptr(x, y, 1), c, cover);
copy_or_blend_pix((value_type*)
m_rbuf->row_ptr(x, y, 1) + x * Step + Offset,
c,
cover);
}
//--------------------------------------------------------------------
AGG_INLINE void copy_hline(int x, int y,
unsigned len,
const color_type& c)
{
pixel_type* p = pix_value_ptr(x, y, len);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x * Step + Offset;
do
{
p->set(c);
p = p->next();
*p = c.v;
p += Step;
}
while(--len);
}
@ -379,9 +277,12 @@ namespace agg
{
do
{
pix_value_ptr(x, y++, 1)->set(c);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
*p = c.v;
}
while (--len);
while(--len);
}
@ -391,27 +292,29 @@ namespace agg
const color_type& c,
int8u cover)
{
if (!c.is_transparent())
if (c.a)
{
pixel_type* p = pix_value_ptr(x, y, len);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x * Step + Offset;
if (c.is_opaque() && cover == cover_mask)
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
do
{
p->set(c);
p = p->next();
*p = c.v;
p += Step;
}
while (--len);
while(--len);
}
else
{
do
{
blend_pix(p, c, cover);
p = p->next();
Blender::blend_pix(p, c.v, alpha, cover);
p += Step;
}
while (--len);
while(--len);
}
}
}
@ -423,23 +326,31 @@ namespace agg
const color_type& c,
int8u cover)
{
if (!c.is_transparent())
if (c.a)
{
if (c.is_opaque() && cover == cover_mask)
value_type* p;
calc_type alpha = (calc_type(c.a) * (cover + 1)) >> 8;
if(alpha == base_mask)
{
do
{
pix_value_ptr(x, y++, 1)->set(c);
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
*p = c.v;
}
while (--len);
while(--len);
}
else
{
do
{
blend_pix(pix_value_ptr(x, y++, 1), c, cover);
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
Blender::blend_pix(p, c.v, alpha, cover);
}
while (--len);
while(--len);
}
}
}
@ -451,24 +362,26 @@ namespace agg
const color_type& c,
const int8u* covers)
{
if (!c.is_transparent())
if (c.a)
{
pixel_type* p = pix_value_ptr(x, y, len);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x * Step + Offset;
do
{
if (c.is_opaque() && *covers == cover_mask)
calc_type alpha = (calc_type(c.a) * (calc_type(*covers) + 1)) >> 8;
if(alpha == base_mask)
{
p->set(c);
*p = c.v;
}
else
{
blend_pix(p, c, *covers);
Blender::blend_pix(p, c.v, alpha, *covers);
}
p = p->next();
p += Step;
++covers;
}
while (--len);
while(--len);
}
}
@ -479,23 +392,26 @@ namespace agg
const color_type& c,
const int8u* covers)
{
if (!c.is_transparent())
if (c.a)
{
do
{
pixel_type* p = pix_value_ptr(x, y++, 1);
calc_type alpha = (calc_type(c.a) * (calc_type(*covers) + 1)) >> 8;
if (c.is_opaque() && *covers == cover_mask)
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
if(alpha == base_mask)
{
p->set(c);
*p = c.v;
}
else
{
blend_pix(p, c, *covers);
Blender::blend_pix(p, c.v, alpha, *covers);
}
++covers;
}
while (--len);
while(--len);
}
}
@ -505,14 +421,16 @@ namespace agg
unsigned len,
const color_type* colors)
{
pixel_type* p = pix_value_ptr(x, y, len);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x * Step + Offset;
do
{
p->set(*colors++);
p = p->next();
*p = colors->v;
p += Step;
++colors;
}
while (--len);
while(--len);
}
@ -523,9 +441,12 @@ namespace agg
{
do
{
pix_value_ptr(x, y++, 1)->set(*colors++);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
*p = colors->v;
++colors;
}
while (--len);
while(--len);
}
@ -536,40 +457,50 @@ namespace agg
const int8u* covers,
int8u cover)
{
pixel_type* p = pix_value_ptr(x, y, len);
value_type* p = (value_type*)
m_rbuf->row_ptr(x, y, len) + x * Step + Offset;
if (covers)
if(covers)
{
do
{
copy_or_blend_pix(p, *colors++, *covers++);
p = p->next();
p += Step;
}
while (--len);
while(--len);
}
else
{
if (cover == cover_mask)
if(cover == 255)
{
do
{
copy_or_blend_pix(p, *colors++);
p = p->next();
if(colors->a == base_mask)
{
*p = colors->v;
}
else
{
copy_or_blend_pix(p, *colors);
}
p += Step;
++colors;
}
while (--len);
while(--len);
}
else
{
do
{
copy_or_blend_pix(p, *colors++, cover);
p = p->next();
p += Step;
}
while (--len);
while(--len);
}
}
}
//--------------------------------------------------------------------
void blend_color_vspan(int x, int y,
@ -578,31 +509,49 @@ namespace agg
const int8u* covers,
int8u cover)
{
if (covers)
value_type* p;
if(covers)
{
do
{
copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, *covers++);
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
copy_or_blend_pix(p, *colors++, *covers++);
}
while (--len);
while(--len);
}
else
{
if (cover == cover_mask)
if(cover == 255)
{
do
{
copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++);
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
if(colors->a == base_mask)
{
*p = colors->v;
}
else
{
copy_or_blend_pix(p, *colors);
}
++colors;
}
while (--len);
while(--len);
}
else
{
do
{
copy_or_blend_pix(pix_value_ptr(x, y++, 1), *colors++, cover);
p = (value_type*)
m_rbuf->row_ptr(x, y++, 1) + x * Step + Offset;
copy_or_blend_pix(p, *colors++, cover);
}
while (--len);
while(--len);
}
}
}
@ -611,19 +560,22 @@ namespace agg
template<class Function> void for_each_pixel(Function f)
{
unsigned y;
for (y = 0; y < height(); ++y)
for(y = 0; y < height(); ++y)
{
row_data r = m_rbuf->row(y);
if (r.ptr)
if(r.ptr)
{
unsigned len = r.x2 - r.x1 + 1;
pixel_type* p = pix_value_ptr(r.x1, y, len);
value_type* p = (value_type*)
m_rbuf->row_ptr(r.x1, y, len) + r.x1 * Step + Offset;
do
{
f(p->c);
p = p->next();
f(p);
p += Step;
}
while (--len);
while(--len);
}
}
}
@ -647,7 +599,8 @@ namespace agg
int xsrc, int ysrc,
unsigned len)
{
if (const int8u* p = from.row_ptr(ysrc))
const int8u* p = from.row_ptr(ysrc);
if(p)
{
memmove(m_rbuf->row_ptr(xdst, ydst, len) + xdst * pix_width,
p + xsrc * pix_width,
@ -656,7 +609,6 @@ namespace agg
}
//--------------------------------------------------------------------
// Blend from single color, using grayscale surface as alpha channel.
template<class SrcPixelFormatRenderer>
void blend_from_color(const SrcPixelFormatRenderer& from,
const color_type& color,
@ -665,26 +617,25 @@ namespace agg
unsigned len,
int8u cover)
{
typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
typedef typename SrcPixelFormatRenderer::color_type src_color_type;
if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
typedef typename SrcPixelFormatRenderer::value_type src_value_type;
const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc);
if(psrc)
{
pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
value_type* pdst =
(value_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst;
do
{
copy_or_blend_pix(pdst, color, src_color_type::scale_cover(cover, psrc->c[0]));
psrc = psrc->next();
pdst = pdst->next();
copy_or_blend_pix(pdst,
color,
(*psrc * cover + base_mask) >> base_shift);
++psrc;
++pdst;
}
while (--len);
while(--len);
}
}
//--------------------------------------------------------------------
// Blend from color table, using grayscale surface as indexes into table.
// Obviously, this only works for integer value types.
template<class SrcPixelFormatRenderer>
void blend_from_lut(const SrcPixelFormatRenderer& from,
const color_type* color_lut,
@ -693,19 +644,19 @@ namespace agg
unsigned len,
int8u cover)
{
typedef typename SrcPixelFormatRenderer::pixel_type src_pixel_type;
if (const src_pixel_type* psrc = from.pix_value_ptr(xsrc, ysrc))
typedef typename SrcPixelFormatRenderer::value_type src_value_type;
const src_value_type* psrc = (src_value_type*)from.row_ptr(ysrc);
if(psrc)
{
pixel_type* pdst = pix_value_ptr(xdst, ydst, len);
value_type* pdst =
(value_type*)m_rbuf->row_ptr(xdst, ydst, len) + xdst;
do
{
copy_or_blend_pix(pdst, color_lut[psrc->c[0]], cover);
psrc = psrc->next();
pdst = pdst->next();
copy_or_blend_pix(pdst, color_lut[*psrc], cover);
++psrc;
++pdst;
}
while (--len);
while(--len);
}
}
@ -713,25 +664,15 @@ namespace agg
rbuf_type* m_rbuf;
};
typedef blender_gray<gray8> blender_gray8;
typedef blender_gray<sgray8> blender_sgray8;
typedef blender_gray<gray16> blender_gray16;
typedef blender_gray<gray32> blender_gray32;
typedef blender_gray_pre<gray8> blender_gray8_pre;
typedef blender_gray_pre<sgray8> blender_sgray8_pre;
typedef blender_gray<gray8> blender_gray8;
typedef blender_gray_pre<gray8> blender_gray8_pre;
typedef blender_gray<gray16> blender_gray16;
typedef blender_gray_pre<gray16> blender_gray16_pre;
typedef blender_gray_pre<gray32> blender_gray32_pre;
typedef pixfmt_alpha_blend_gray<blender_gray8, rendering_buffer> pixfmt_gray8;
typedef pixfmt_alpha_blend_gray<blender_sgray8, rendering_buffer> pixfmt_sgray8;
typedef pixfmt_alpha_blend_gray<blender_gray16, rendering_buffer> pixfmt_gray16;
typedef pixfmt_alpha_blend_gray<blender_gray32, rendering_buffer> pixfmt_gray32;
typedef pixfmt_alpha_blend_gray<blender_gray8_pre, rendering_buffer> pixfmt_gray8_pre;
typedef pixfmt_alpha_blend_gray<blender_sgray8_pre, rendering_buffer> pixfmt_sgray8_pre;
typedef pixfmt_alpha_blend_gray<blender_gray16_pre, rendering_buffer> pixfmt_gray16_pre;
typedef pixfmt_alpha_blend_gray<blender_gray32_pre, rendering_buffer> pixfmt_gray32_pre;
typedef pixfmt_alpha_blend_gray<blender_gray8, rendering_buffer> pixfmt_gray8; //----pixfmt_gray8
typedef pixfmt_alpha_blend_gray<blender_gray8_pre, rendering_buffer> pixfmt_gray8_pre; //----pixfmt_gray8_pre
typedef pixfmt_alpha_blend_gray<blender_gray16, rendering_buffer> pixfmt_gray16; //----pixfmt_gray16
typedef pixfmt_alpha_blend_gray<blender_gray16_pre, rendering_buffer> pixfmt_gray16_pre; //----pixfmt_gray16_pre
}
#endif