WIP: SVG import & rasterization

Updated AntiGrain (agg) library to 2.5 Added agg_svg library from AntiGrain 2.5 added src/slic3r/Utils/SVGImport.cpp/hpp
2026-07-27 03:44:53 +03:00 · 2019-02-07 12:06:51 +01:00
parent a2478b7faa
commit 9b15908a47
59 changed files with 10646 additions and 3586 deletions
--- a/src/agg/agg_conv_adaptor_vcgen.h
+++ b/src/agg/agg_conv_adaptor_vcgen.h
@@ -0,0 +1,166 @@
+//----------------------------------------------------------------------------
+// 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_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