//---------------------------------------------------------------------------- // 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_RASTERIZER_OUTLINE_INCLUDED #define AGG_RASTERIZER_OUTLINE_INCLUDED #include "agg_basics.h" namespace agg { //======================================================rasterizer_outline template<class Renderer> class rasterizer_outline { public: explicit rasterizer_outline(Renderer& ren) : m_ren(&ren), m_start_x(0), m_start_y(0), m_vertices(0) {} void attach(Renderer& ren) { m_ren = &ren; } //-------------------------------------------------------------------- void move_to(int x, int y) { m_vertices = 1; m_ren->move_to(m_start_x = x, m_start_y = y); } //-------------------------------------------------------------------- void line_to(int x, int y) { ++m_vertices; m_ren->line_to(x, y); } //-------------------------------------------------------------------- void move_to_d(double x, double y) { move_to(m_ren->coord(x), m_ren->coord(y)); } //-------------------------------------------------------------------- void line_to_d(double x, double y) { line_to(m_ren->coord(x), m_ren->coord(y)); } //-------------------------------------------------------------------- void close() { if(m_vertices > 2) { line_to(m_start_x, m_start_y); } m_vertices = 0; } //-------------------------------------------------------------------- void add_vertex(double x, double y, unsigned cmd) { if(is_move_to(cmd)) { move_to_d(x, y); } else { if(is_end_poly(cmd)) { if(is_closed(cmd)) close(); } else { line_to_d(x, y); } } } //-------------------------------------------------------------------- template<class VertexSource> void add_path(VertexSource& vs, unsigned path_id=0) { double x; double y; unsigned cmd; vs.rewind(path_id); while(!is_stop(cmd = vs.vertex(&x, &y))) { add_vertex(x, y, cmd); } } //-------------------------------------------------------------------- template<class VertexSource, class ColorStorage, class PathId> void render_all_paths(VertexSource& vs, const ColorStorage& colors, const PathId& path_id, unsigned num_paths) { for(unsigned i = 0; i < num_paths; i++) { m_ren->line_color(colors[i]); add_path(vs, path_id[i]); } } //-------------------------------------------------------------------- template<class Ctrl> void render_ctrl(Ctrl& c) { unsigned i; for(i = 0; i < c.num_paths(); i++) { m_ren->line_color(c.color(i)); add_path(c, i); } } private: Renderer* m_ren; int m_start_x; int m_start_y; unsigned m_vertices; }; } #endif