| 1 | /***************************************************************** |
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| 2 | |
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| 3 | Prototypes for the fractional Brownian motion algorithm. These |
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| 4 | functions were originally the work of F. Kenton Musgrave. For |
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| 5 | documentation of the different functions please refer to the book: |
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| 6 | "Texturing and modeling: a procedural approach" |
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| 7 | by David S. Ebert et. al. |
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| 8 | |
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| 9 | ******************************************************************/ |
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| 10 | |
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| 11 | #ifndef _fbm_h |
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| 12 | #define _fbm_h |
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| 13 | |
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| 14 | #include <math.h> |
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| 15 | |
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| 16 | #ifdef __cplusplus |
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| 17 | extern "C" { |
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| 18 | #endif |
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| 19 | |
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| 20 | //#define TRUE 1 |
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| 21 | //#define FALSE 0 |
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| 22 | |
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| 23 | typedef struct { |
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| 24 | double x; |
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| 25 | double y; |
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| 26 | double z; |
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| 27 | } Vector; |
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| 28 | |
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| 29 | float noise3(float vec[]); |
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| 30 | double fBm( Vector point, double H, double lacunarity, double octaves, |
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| 31 | int init ); |
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| 32 | #endif |
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| 33 | |
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| 34 | #ifdef __cplusplus |
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| 35 | } |
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| 36 | #endif |
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| 37 | |
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| 38 | |
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| 39 | |
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| 40 | |
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| 41 | |
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