agg/inc/agg_rounded_rect.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 // Rounded rectangle vertex generator
  17 //
  18 //----------------------------------------------------------------------------
  19
  20 #ifndef AGG_ROUNDED_RECT_INCLUDED
  21 #define AGG_ROUNDED_RECT_INCLUDED
  22
  23 #include "agg_basics.h"
  24 #include "agg_arc.h"
  25 #include "agg_vertex_iterator.h"
  26
  27
  28 namespace agg
  29 {
  30     //------------------------------------------------------------rounded_rect
  31     //
  32     // See Implemantation agg_rounded_rect.cpp
  33     //
  34     class rounded_rect
  35     {
  36     public:
  37         rounded_rect() {}
  38         rounded_rect(double x1, double y1, double x2, double y2, double r);
  39
  40         void rect(double x1, double y1, double x2, double y2);
  41         void radius(double r);
  42         void radius(double rx, double ry);
  43         void radius(double rx_bottom, double ry_bottom, double rx_top, double ry_top);
  44         void radius(double rx1, double ry1, double rx2, double ry2,
  45                     double rx3, double ry3, double rx4, double ry4);
  46         void normalize_radius();
  47
  48         void approximation_scale(double s) { m_arc.approximation_scale(s); }
  49         double approximation_scale() const { return m_arc.approximation_scale(); }
  50
  51         void rewind(unsigned);
  52         unsigned vertex(double* x, double* y);
  53
  54         typedef rounded_rect source_type;
  55         typedef vertex_iterator<source_type> iterator;
  56         iterator begin(unsigned id) { return iterator(*this, id); }
  57         iterator end() { return iterator(path_cmd_stop); }
  58
  59     private:
  60         double m_x1;
  61         double m_y1;
  62         double m_x2;
  63         double m_y2;
  64         double m_rx1;
  65         double m_ry1;
  66         double m_rx2;
  67         double m_ry2;
  68         double m_rx3;
  69         double m_ry3;
  70         double m_rx4;
  71         double m_ry4;
  72         unsigned m_status;
  73         arc      m_arc;
  74     };
  75
  76 }
  77
  78 #endif
  79