/usr/include/mapnik/agg/agg_conv_unclose_polygon.h is in libmapnik-dev 2.2.0+ds1-6build2.
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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_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
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