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diff --git a/agg/inc/agg_conv_adaptor_vpgen.h b/agg/inc/agg_conv_adaptor_vpgen.h
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+//----------------------------------------------------------------------------
+// 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.
+//
+//----------------------------------------------------------------------------
+// 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"
+#include "agg_vertex_iterator.h"
+
+namespace agg
+{
+
+ //======================================================conv_adaptor_vpgen
+ template<class VertexSource, class VPGen> class conv_adaptor_vpgen
+ {
+ public:
+ conv_adaptor_vpgen(VertexSource& source) : m_source(&source) {}
+
+ void set_source(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);
+
+ typedef conv_adaptor_vpgen<VertexSource, VPGen> source_type;
+ typedef vertex_iterator<source_type> iterator;
+ iterator begin(unsigned id) { return iterator(*this, id); }
+ iterator end() { return iterator(path_cmd_stop); }
+
+ 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
+