cstool/noise/noisegen.h Source File (Crystal Space 2.0 Public API Reference)

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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