agg/inc/agg_render_scanlines.h

   1 //----------------------------------------------------------------------------
   2 // Anti-Grain Geometry - Version 2.3
   3 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
   4 //
   5 // Permission to copy, use, modify, sell and distribute this software
   6 // is granted provided this copyright notice appears in all copies.
   7 // This software is provided "as is" without express or implied
   8 // warranty, and with no claim as to its suitability for any purpose.
   9 //
  10 //----------------------------------------------------------------------------
  11 // Contact: mcseem@antigrain.com
  12 //          mcseemagg@yahoo.com
  13 //          http://www.antigrain.com
  14 //----------------------------------------------------------------------------
  15
  16 #ifndef AGG_RENDER_SCANLINES_INCLUDED
  17 #define AGG_RENDER_SCANLINES_INCLUDED
  18
  19 #include "agg_basics.h"
  20
  21 namespace agg
  22 {
  23     //========================================================render_scanlines
  24     template<class Rasterizer, class Scanline, class Renderer>
  25     void render_scanlines(Rasterizer& ras, Scanline& sl, Renderer& ren)
  26     {
  27         if(ras.rewind_scanlines())
  28         {
  29             sl.reset(ras.min_x(), ras.max_x());
  30             ren.prepare(unsigned(ras.max_x() - ras.min_x() + 2));
  31
  32             while(ras.sweep_scanline(sl))
  33             {
  34                 ren.render(sl);
  35             }
  36         }
  37     }
  38
  39
  40     //========================================================render_all_paths
  41     template<class Rasterizer, class Scanline, class Renderer,
  42              class VertexSource, class ColorStorage, class PathId>
  43     void render_all_paths(Rasterizer& ras,
  44                           Scanline& sl,
  45                           Renderer& r,
  46                           VertexSource& vs,
  47                           const ColorStorage& as,
  48                           const PathId& id,
  49                           unsigned num_paths)
  50     {
  51         for(unsigned i = 0; i < num_paths; i++)
  52         {
  53             ras.reset();
  54             ras.add_path(vs, id[i]);
  55             r.color(as[i]);
  56             render_scanlines(ras, sl, r);
  57         }
  58     }
  59
  60
  61 }
  62
  63 #endif
  64
  65
  66