81 lines
2.4 KiB
C
81 lines
2.4 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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#ifndef AGG_CONV_CONCAT_INCLUDED
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#define AGG_CONV_CONCAT_INCLUDED
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#include "agg_basics.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_concat
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// Concatenation of two paths. Usually used to combine lines or curves
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// with markers such as arrowheads
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template<class VS1, class VS2> class conv_concat
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{
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public:
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conv_concat(VS1& source1, VS2& source2) :
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m_source1(&source1), m_source2(&source2), m_status(2) {}
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void set_source1(VS1& source) { m_source1 = &source; }
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void set_source2(VS2& source) { m_source2 = &source; }
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void rewind(unsigned id)
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{
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m_source1->rewind(id);
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m_source2->rewind(0);
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m_status = 0;
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}
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unsigned vertex(double* x, double* y)
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{
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unsigned cmd;
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if(m_status == 0)
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{
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cmd = m_source1->vertex(x, y);
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if(!is_stop(cmd)) return cmd;
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m_status = 1;
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}
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if(m_status == 1)
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{
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cmd = m_source2->vertex(x, y);
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if(!is_stop(cmd)) return cmd;
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m_status = 2;
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}
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return path_cmd_stop;
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}
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typedef conv_concat<VS1, VS2> 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_concat(const conv_concat<VS1, VS2>&);
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const conv_concat<VS1, VS2>&
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operator = (const conv_concat<VS1, VS2>&);
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VS1* m_source1;
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VS2* m_source2;
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int m_status;
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};
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}
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#endif
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