CrystalSpace

Public API Reference

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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