headers/libs/agg/agg_span_interpolator_adaptor.h

   1 //----------------------------------------------------------------------------
   2 // Anti-Grain Geometry - Version 2.4
   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_SPAN_INTERPOLATOR_ADAPTOR_INCLUDED
  17 #define AGG_SPAN_INTERPOLATOR_ADAPTOR_INCLUDED
  18
  19 #include "agg_basics.h"
  20
  21 namespace agg
  22 {
  23
  24     //===============================================span_interpolator_adaptor
  25     template<class Interpolator, class Distortion>
  26     class span_interpolator_adaptor : public Interpolator
  27     {
  28     public:
  29         typedef Interpolator base_type;
  30         typedef typename base_type::trans_type trans_type;
  31         typedef Distortion distortion_type;
  32
  33         //--------------------------------------------------------------------
  34         span_interpolator_adaptor() {}
  35         span_interpolator_adaptor(const trans_type& trans,
  36                                   const distortion_type& dist) :
  37             base_type(trans),
  38             m_distortion(&dist)
  39         {
  40         }
  41
  42         //--------------------------------------------------------------------
  43         span_interpolator_adaptor(const trans_type& trans,
  44                                   const distortion_type& dist,
  45                                   double x, double y, unsigned len) :
  46             base_type(trans, x, y, len),
  47             m_distortion(&dist)
  48         {
  49         }
  50
  51         //--------------------------------------------------------------------
  52         const distortion_type& distortion() const
  53         {
  54             return *m_distortion;
  55         }
  56
  57         //--------------------------------------------------------------------
  58         void distortion(const distortion_type& dist)
  59         {
  60             m_distortion = dist;
  61         }
  62
  63         //--------------------------------------------------------------------
  64         void coordinates(int* x, int* y) const
  65         {
  66             base_type::coordinates(x, y);
  67             m_distortion->calculate(x, y);
  68         }
  69
  70     private:
  71         //--------------------------------------------------------------------
  72         const distortion_type* m_distortion;
  73     };
  74 }
  75
  76
  77 #endif