A portable, open-source, coherent noise-generating library for C++

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# 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 noise
    00030 {
    00031
    00034
    00036   enum NoiseQuality
    00037   {
    00038
    00044     QUALITY_FAST = 0,
    00045
    00051     QUALITY_STD = 1,
    00052
    00058     QUALITY_BEST = 2
    00059
    00060   };
    00061
    00077   double GradientCoherentNoise3D (double x, double y, double z, int seed = 0,
    00078     NoiseQuality noiseQuality = QUALITY_STD);
    00079
    00121   double GradientNoise3D (double fx, double fy, double fz, int ix, int iy,
    00122     int iz, int seed = 0);
    00123
    00139   int IntValueNoise3D (int x, int y, int z, int seed = 0);
    00140
    00158   inline double MakeInt32Range (double n)
    00159   {
    00160     if (n >= 1073741824.0) {
    00161       return (2.0 * fmod (n, 1073741824.0)) - 1073741824.0;
    00162     } else if (n <= -1073741824.0) {
    00163       return (2.0 * fmod (n, 1073741824.0)) + 1073741824.0;
    00164     } else {
    00165       return n;
    00166     }
    00167   }
    00168
    00184   double ValueCoherentNoise3D (double x, double y, double z, int seed = 0,
    00185     NoiseQuality noiseQuality = QUALITY_STD);
    00186
    00202   double ValueNoise3D (int x, int y, int z, int seed = 0);
    00203
    00205
    00206 }
    00207
    00208 #endif