Panda3D
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00001 // Filename: perlinNoise2.h 00002 // Created by: drose (05Oct05) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #ifndef PERLINNOISE2_H 00016 #define PERLINNOISE2_H 00017 00018 #include "pandabase.h" 00019 #include "perlinNoise.h" 00020 00021 //////////////////////////////////////////////////////////////////// 00022 // Class : PerlinNoise2 00023 // Description : This class provides an implementation of Perlin noise 00024 // for 2 variables. This code is loosely based on the 00025 // reference implementation at 00026 // http://mrl.nyu.edu/~perlin/noise/ . 00027 //////////////////////////////////////////////////////////////////// 00028 class EXPCL_PANDA_MATHUTIL PerlinNoise2 : public PerlinNoise { 00029 PUBLISHED: 00030 INLINE PerlinNoise2(); 00031 INLINE PerlinNoise2(double sx, double sy, 00032 int table_size = 256, 00033 unsigned long seed = 0); 00034 INLINE PerlinNoise2(const PerlinNoise2 ©); 00035 INLINE void operator = (const PerlinNoise2 ©); 00036 00037 INLINE void set_scale(double scale); 00038 INLINE void set_scale(double sx, double sy); 00039 INLINE void set_scale(const LVecBase2f &scale); 00040 INLINE void set_scale(const LVecBase2d &scale); 00041 00042 INLINE double noise(double x, double y) const; 00043 INLINE float noise(const LVecBase2f &value) const; 00044 double noise(const LVecBase2d &value) const; 00045 00046 INLINE double operator ()(double x, double y) const; 00047 INLINE float operator ()(const LVecBase2f &value) const; 00048 INLINE double operator ()(const LVecBase2d &value) const; 00049 00050 private: 00051 void init_unscaled_xform(); 00052 INLINE static double grad(int hash, double x, double y); 00053 00054 private: 00055 LMatrix3d _unscaled_xform; 00056 LMatrix3d _input_xform; 00057 }; 00058 00059 #include "perlinNoise2.I" 00060 00061 #endif 00062