agg/inc/agg_trans_warp_magnifier.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_WARP_MAGNIFIER_INCLUDED
  17 #define AGG_WARP_MAGNIFIER_INCLUDED
  18
  19
  20 namespace agg
  21 {
  22
  23     //----------------------------------------------------trans_warp_magnifier
  24     //
  25     // See Inmplementation agg_trans_warp_magnifier.cpp
  26     //
  27     class trans_warp_magnifier
  28     {
  29     public:
  30         trans_warp_magnifier() : m_xc(0.0), m_yc(0.0), m_magn(1.0), m_radius(1.0) {}
  31
  32         void center(double x, double y) { m_xc = x; m_yc = y; }
  33         void magnification(double m)    { m_magn = m;         }
  34         void radius(double r)           { m_radius = r;       }
  35
  36         void transform(double* x, double* y) const;
  37         void inverse_transform(double* x, double* y) const;
  38
  39     private:
  40         double m_xc;
  41         double m_yc;
  42         double m_magn;
  43         double m_radius;
  44     };
  45
  46
  47 }
  48
  49
  50 #endif
  51