//---------------------------------------------------------------------------- // Anti-Grain Geometry (AGG) - Version 2.5 // A high quality rendering engine for C++ // Copyright (C) 2002-2006 Maxim Shemanarev // Contact: mcseem@antigrain.com // mcseemagg@yahoo.com // http://antigrain.com // // AGG is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // AGG is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with AGG; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, // MA 02110-1301, USA. //---------------------------------------------------------------------------- #ifndef AGG_CONV_CONCAT_INCLUDED #define AGG_CONV_CONCAT_INCLUDED #include "agg_basics.h" 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; }; } #endif |