cstool/noise/noisegen.h
00001 // noisegen.h 00002 // 00003 // Copyright (C) 2003, 2004 Jason Bevins 00004 // 00005 // This library is free software; you can redistribute it and/or modify it 00006 // under the terms of the GNU Lesser General Public License as published by 00007 // the Free Software Foundation; either version 2.1 of the License, or (at 00008 // your option) any later version. 00009 // 00010 // This library is distributed in the hope that it will be useful, but WITHOUT 00011 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00012 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 00013 // License (COPYING.txt) for more details. 00014 // 00015 // You should have received a copy of the GNU Lesser General Public License 00016 // along with this library; if not, write to the Free Software Foundation, 00017 // Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00018 // 00019 // The developer's email is jlbezigvins@gmzigail.com (for great email, take 00020 // off every 'zig'.) 00021 // 00022 00023 #ifndef NOISE_NOISEGEN_H 00024 #define NOISE_NOISEGEN_H 00025 00026 #include <math.h> 00027 #include "basictypes.h" 00028 00029 namespace CS { 00030 namespace Math { 00031 namespace Noise { 00032 00035 00037 enum NoiseQuality 00038 { 00039 00045 QUALITY_FAST = 0, 00046 00052 QUALITY_STD = 1, 00053 00059 QUALITY_BEST = 2 00060 00061 }; 00062 00078 double GradientCoherentNoise3D (double x, double y, double z, int seed = 0, 00079 NoiseQuality noiseQuality = QUALITY_STD); 00080 00122 double GradientNoise3D (double fx, double fy, double fz, int ix, int iy, 00123 int iz, int seed = 0); 00124 00140 int IntValueNoise3D (int x, int y, int z, int seed = 0); 00141 00159 inline double MakeInt32Range (double n) 00160 { 00161 if (n >= 1073741824.0) { 00162 return (2.0 * fmod (n, 1073741824.0)) - 1073741824.0; 00163 } else if (n <= -1073741824.0) { 00164 return (2.0 * fmod (n, 1073741824.0)) + 1073741824.0; 00165 } else { 00166 return n; 00167 } 00168 } 00169 00185 double ValueCoherentNoise3D (double x, double y, double z, int seed = 0, 00186 NoiseQuality noiseQuality = QUALITY_STD); 00187 00203 double ValueNoise3D (int x, int y, int z, int seed = 0); 00204 00206 00207 } // namespace Noise 00208 } // namespace Math 00209 } // namespace CS 00210 00211 #endif
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