76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
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//----------------------------------------------------------------------------
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// Anti-Grain Geometry - Version 2.2
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// Copyright (C) 2002-2004 Maxim Shemanarev (http://www.antigrain.com)
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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//----------------------------------------------------------------------------
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://www.antigrain.com
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//----------------------------------------------------------------------------
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//
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// class conv_transform
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//
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//----------------------------------------------------------------------------
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#ifndef AGG_CONV_TRANSFORM_INCLUDED
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#define AGG_CONV_TRANSFORM_INCLUDED
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#include "agg_basics.h"
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#include "agg_trans_affine.h"
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#include "agg_vertex_iterator.h"
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namespace agg
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{
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//----------------------------------------------------------conv_transform
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template<class VertexSource, class Transformer=trans_affine> class conv_transform
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{
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public:
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conv_transform(VertexSource& source, const Transformer& tr) :
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m_source(&source), m_trans(&tr) {}
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void set_source(VertexSource& source) { m_source = &source; }
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void rewind(unsigned id)
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{
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m_source->rewind(id);
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}
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unsigned vertex(double* x, double* y)
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{
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unsigned cmd = m_source->vertex(x, y);
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if(is_vertex(cmd))
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{
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m_trans->transform(x, y);
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}
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return cmd;
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}
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void transformer(const Transformer& tr)
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{
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m_trans = &tr;
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}
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typedef conv_transform<VertexSource, Transformer> source_type;
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typedef vertex_iterator<source_type> iterator;
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iterator begin(unsigned id) { return iterator(*this, id); }
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iterator end() { return iterator(path_cmd_stop); }
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private:
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conv_transform(const conv_transform<VertexSource>&);
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const conv_transform<VertexSource>&
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operator = (const conv_transform<VertexSource>&);
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VertexSource* m_source;
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const Transformer* m_trans;
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};
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}
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#endif
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