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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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src/agg/agg_vertex_sequence.h Normal file
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//----------------------------------------------------------------------------
// 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://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.
//----------------------------------------------------------------------------
#ifndef AGG_VERTEX_SEQUENCE_INCLUDED
#define AGG_VERTEX_SEQUENCE_INCLUDED
#include "agg_basics.h"
#include "agg_array.h"
#include "agg_math.h"
namespace agg
{
//----------------------------------------------------------vertex_sequence
// Modified agg::pod_bvector. The data is interpreted as a sequence
// of vertices. It means that the type T must expose:
//
// bool T::operator() (const T& val)
//
// that is called every time new vertex is being added. The main purpose
// of this operator is the possibility to calculate some values during
// adding and to return true if the vertex fits some criteria or false if
// it doesn't. In the last case the new vertex is not added.
//
// The simple example is filtering coinciding vertices with calculation
// of the distance between the current and previous ones:
//
// struct vertex_dist
// {
// double x;
// double y;
// double dist;
//
// vertex_dist() {}
// vertex_dist(double x_, double y_) :
// x(x_),
// y(y_),
// dist(0.0)
// {
// }
//
// bool operator () (const vertex_dist& val)
// {
// return (dist = calc_distance(x, y, val.x, val.y)) > EPSILON;
// }
// };
//
// Function close() calls this operator and removes the last vertex if
// necessary.
//------------------------------------------------------------------------
template<class T, unsigned S=6>
class vertex_sequence : public pod_bvector<T, S>
{
public:
typedef pod_bvector<T, S> base_type;
void add(const T& val);
void modify_last(const T& val);
void close(bool remove_flag);
};
//------------------------------------------------------------------------
template<class T, unsigned S>
void vertex_sequence<T, S>::add(const T& val)
{
if(base_type::size() > 1)
{
if(!(*this)[base_type::size() - 2]((*this)[base_type::size() - 1]))
{
base_type::remove_last();
}
}
base_type::add(val);
}
//------------------------------------------------------------------------
template<class T, unsigned S>
void vertex_sequence<T, S>::modify_last(const T& val)
{
base_type::remove_last();
add(val);
}
//------------------------------------------------------------------------
template<class T, unsigned S>
void vertex_sequence<T, S>::close(bool closed)
{
while(base_type::size() > 1)
{
if((*this)[base_type::size() - 2]((*this)[base_type::size() - 1])) break;
T t = (*this)[base_type::size() - 1];
base_type::remove_last();
modify_last(t);
}
if(closed)
{
while(base_type::size() > 1)
{
if((*this)[base_type::size() - 1]((*this)[0])) break;
base_type::remove_last();
}
}
}
//-------------------------------------------------------------vertex_dist
// Vertex (x, y) with the distance to the next one. The last vertex has
// distance between the last and the first points if the polygon is closed
// and 0.0 if it's a polyline.
struct vertex_dist
{
double x;
double y;
double dist;
vertex_dist() {}
vertex_dist(double x_, double y_) :
x(x_),
y(y_),
dist(0.0)
{
}
bool operator () (const vertex_dist& val)
{
bool ret = (dist = calc_distance(x, y, val.x, val.y)) > vertex_dist_epsilon;
if(!ret) dist = 1.0 / vertex_dist_epsilon;
return ret;
}
};
//--------------------------------------------------------vertex_dist_cmd
// Save as the above but with additional "command" value
struct vertex_dist_cmd : public vertex_dist
{
unsigned cmd;
vertex_dist_cmd() {}
vertex_dist_cmd(double x_, double y_, unsigned cmd_) :
vertex_dist(x_, y_),
cmd(cmd_)
{
}
};
}
#endif