40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
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//externs made available by simplex.c
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#ifndef SIMPLEX_H_INCLUDED
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#define SIMPLEX_H_INCLUDED
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#define SIMPLEX_X 0
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#define SIMPLEX_Y 1
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#define SIMPLEX_Z 2
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#define SIMPLEX_W 3
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typedef double (*noise2Dptr)(double, double);
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typedef double (*noise3Dptr)(double, double, double);
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typedef double (*noise4Dptr)(double, double, double, double);
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typedef double (*noiseNDptr)(int, double[]);
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typedef union NoiseUnion {
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noise2Dptr p2;
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noise3Dptr p3;
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noise4Dptr p4;
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noiseNDptr pn;
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} genericNoise;
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extern double Noise2D(double x, double y);
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extern double Noise3D(double x, double y, double z);
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extern double Noise4D(double x, double y, double z, double w);
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extern double GBlur1D(double stdDev, double x);
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extern double GBlur2D(double stdDev, double x, double y);
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extern double Noise(genericNoise func, int len, double args[]);
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extern double TurbulentNoise(genericNoise func, int direction, int iterations, int len, double args[]);
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extern double FractalSumNoise(genericNoise func, int iterations, int len, double args[]);
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extern double FractalSumAbsNoise(genericNoise func, int iterations, int len, double args[]);
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double octave_3d(double x, double y, double z, int octaves, double persistence);
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#endif
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