| //---------------------------------------------------------------------------- | |
| // 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 | |
| //---------------------------------------------------------------------------- | |
| namespace agg | |
| { | |
| //=============================================================conv_concat | |
| // Concatenation of two paths. Usually used to combine lines or curves | |
| // with markers such as arrowheads | |
| template<class VS1, class VS2> class conv_concat | |
| { | |
| public: | |
| conv_concat(VS1& source1, VS2& source2) : | |
| m_source1(&source1), m_source2(&source2), m_status(2) {} | |
| void attach1(VS1& source) { m_source1 = &source; } | |
| void attach2(VS2& source) { m_source2 = &source; } | |
| void rewind(unsigned path_id) | |
| { | |
| m_source1->rewind(path_id); | |
| m_source2->rewind(0); | |
| m_status = 0; | |
| } | |
| unsigned vertex(double* x, double* y) | |
| { | |
| unsigned cmd; | |
| if(m_status == 0) | |
| { | |
| cmd = m_source1->vertex(x, y); | |
| if(!is_stop(cmd)) return cmd; | |
| m_status = 1; | |
| } | |
| if(m_status == 1) | |
| { | |
| cmd = m_source2->vertex(x, y); | |
| if(!is_stop(cmd)) return cmd; | |
| m_status = 2; | |
| } | |
| return path_cmd_stop; | |
| } | |
| private: | |
| conv_concat(const conv_concat<VS1, VS2>&); | |
| const conv_concat<VS1, VS2>& | |
| operator = (const conv_concat<VS1, VS2>&); | |
| VS1* m_source1; | |
| VS2* m_source2; | |
| int m_status; | |
| }; | |
| } | |