agg/inc/agg_vpgen_segmentator.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_VPGEN_SEGMENTATOR_INCLUDED
  17 #define AGG_VPGEN_SEGMENTATOR_INCLUDED
  18
  19 #include <math.h>
  20 #include "agg_basics.h"
  21
  22 namespace agg
  23 {
  24
  25     //=======================================================vpgen_segmentator
  26     //
  27     // See Implementation agg_vpgen_segmentator.cpp
  28     //
  29     class vpgen_segmentator
  30     {
  31     public:
  32         vpgen_segmentator() : m_approximation_scale(1.0) {}
  33
  34         void approximation_scale(double s) { m_approximation_scale = s;     }
  35         double approximation_scale() const { return m_approximation_scale;  }
  36
  37         static bool auto_close()   { return false; }
  38         static bool auto_unclose() { return false; }
  39
  40         void reset() { m_cmd = path_cmd_stop; }
  41         void move_to(double x, double y);
  42         void line_to(double x, double y);
  43         unsigned vertex(double* x, double* y);
  44
  45     private:
  46         double   m_approximation_scale;
  47         double   m_x1;
  48         double   m_y1;
  49         double   m_dx;
  50         double   m_dy;
  51         double   m_dl;
  52         double   m_ddl;
  53         unsigned m_cmd;
  54     };
  55
  56
  57
  58 }
  59
  60 #endif
  61