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147 lines
4.2 KiB
147 lines
4.2 KiB
//---------------------------------------------------------------------------- |
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// Anti-Grain Geometry - Version 2.4 |
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// Copyright (C) 2002-2005 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_RASTERIZER_OUTLINE_INCLUDED |
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#define AGG_RASTERIZER_OUTLINE_INCLUDED |
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#include "agg_basics.h" |
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namespace agg |
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{ |
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//======================================================rasterizer_outline |
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template<class Renderer> class rasterizer_outline |
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{ |
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public: |
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explicit rasterizer_outline(Renderer& ren) : |
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m_ren(&ren), |
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m_start_x(0), |
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m_start_y(0), |
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m_vertices(0) |
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{} |
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void attach(Renderer& ren) { m_ren = &ren; } |
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//-------------------------------------------------------------------- |
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void move_to(int x, int y) |
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{ |
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m_vertices = 1; |
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m_ren->move_to(m_start_x = x, m_start_y = y); |
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} |
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//-------------------------------------------------------------------- |
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void line_to(int x, int y) |
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{ |
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++m_vertices; |
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m_ren->line_to(x, y); |
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} |
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//-------------------------------------------------------------------- |
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void move_to_d(double x, double y) |
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{ |
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move_to(m_ren->coord(x), m_ren->coord(y)); |
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} |
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//-------------------------------------------------------------------- |
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void line_to_d(double x, double y) |
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{ |
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line_to(m_ren->coord(x), m_ren->coord(y)); |
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} |
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//-------------------------------------------------------------------- |
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void close() |
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{ |
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if(m_vertices > 2) |
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{ |
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line_to(m_start_x, m_start_y); |
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} |
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m_vertices = 0; |
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} |
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//-------------------------------------------------------------------- |
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void add_vertex(double x, double y, unsigned cmd) |
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{ |
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if(is_move_to(cmd)) |
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{ |
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move_to_d(x, y); |
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} |
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else |
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{ |
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if(is_end_poly(cmd)) |
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{ |
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if(is_closed(cmd)) close(); |
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} |
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else |
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{ |
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line_to_d(x, y); |
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} |
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} |
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} |
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//-------------------------------------------------------------------- |
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template<class VertexSource> |
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void add_path(VertexSource& vs, unsigned path_id=0) |
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{ |
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double x; |
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double y; |
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unsigned cmd; |
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vs.rewind(path_id); |
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while(!is_stop(cmd = vs.vertex(&x, &y))) |
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{ |
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add_vertex(x, y, cmd); |
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} |
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} |
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//-------------------------------------------------------------------- |
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template<class VertexSource, class ColorStorage, class PathId> |
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void render_all_paths(VertexSource& vs, |
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const ColorStorage& colors, |
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const PathId& path_id, |
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unsigned num_paths) |
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{ |
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for(unsigned i = 0; i < num_paths; i++) |
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{ |
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m_ren->line_color(colors[i]); |
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add_path(vs, path_id[i]); |
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} |
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} |
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//-------------------------------------------------------------------- |
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template<class Ctrl> void render_ctrl(Ctrl& c) |
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{ |
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unsigned i; |
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for(i = 0; i < c.num_paths(); i++) |
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{ |
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m_ren->line_color(c.color(i)); |
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add_path(c, i); |
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} |
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} |
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private: |
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Renderer* m_ren; |
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int m_start_x; |
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int m_start_y; |
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unsigned m_vertices; |
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}; |
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} |
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#endif |
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