Cortex  10.0.0-a4
PointDistribution.h
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34 
35 #ifndef IECORE_POINTDISTRIBUTION_H
36 #define IECORE_POINTDISTRIBUTION_H
37 
38 #include "OpenEXR/ImathVec.h"
39 #include "OpenEXR/ImathBox.h"
40 
41 #include "boost/noncopyable.hpp"
42 
43 #include "IECore/Export.h"
44 
45 #include <vector>
46 
47 namespace IECore
48 {
49 
54 
62 class IECORE_API PointDistribution : public boost::noncopyable
63 {
64 
65  public :
66 
69  PointDistribution( const std::string &tileSet );
70 
78  template<typename DensityFunction, typename PointFunction>
79  void operator () ( const Imath::Box2f &bounds, float density, DensityFunction &densitySampler, PointFunction &pointEmitter ) const;
88  template<typename PointFunction>
89  void operator () ( const Imath::Box2f &bounds, float density, PointFunction &pointEmitter ) const;
90 
93  static const PointDistribution &defaultInstance();
94 
95  private :
96 
97  struct Tile;
98 
99  template<typename DensityFunction, typename PointFunction>
100  struct DensityThresholdedEmitter;
101 
102  template<typename PointFunction>
103  void processTile( const Tile &tile, const Imath::V2f &bottomLeft, const Imath::Box2f &bounds, float density, PointFunction &pointEmitter ) const;
104 
105  template<typename PointFunction>
106  void recurseTile( const Tile &tile, const Imath::V2f &bottomLeft, unsigned level, const Imath::Box2f &bounds, float density, PointFunction &pointEmitter ) const;
107 
108  typedef std::vector<Tile> TileVector;
109  TileVector m_tiles;
110 
111  int m_numSubTiles; // number of subtiles in one axis (so there are m_numSubTiles * m_numSubTiles child tiles really)
112 
113  inline unsigned int hash( int x, int y ) const;
114  static const unsigned int m_permSize = 256;
115  std::vector<unsigned int> m_perm;
116 
117 };
118 
119 } // namespace IECore
120 
121 #include "IECore/PointDistribution.inl"
122 
123 #endif // IECORE_POINTDISTRIBUTION_H
Definition: PointDistribution.h:62
This namespace contains all components of the core library.
Definition: AddSmoothSkinningInfluencesOp.h:43