/*****************************************************************+ −
+ − Prototypes for the fractional Brownian motion algorithm. These+ −
functions were originally the work of F. Kenton Musgrave. For+ −
documentation of the different functions please refer to the book:+ −
"Texturing and modeling: a procedural approach"+ −
by David S. Ebert et. al.+ −
+ −
******************************************************************/+ −
+ − #ifndef _fbm_h+ −
#define _fbm_h+ −
+ − #include <math.h>+ −
+ − #ifdef __cplusplus+ −
extern "C" {+ −
#endif+ −
+ − //#define TRUE 1+ −
//#define FALSE 0+ −
+ − typedef struct {+ −
double x;+ −
double y;+ −
double z;+ −
} Vector;+ −
+ −
float noise3(float vec[]);+ −
double fBm( Vector point, double H, double lacunarity, double octaves, + −
int init );+ −
#endif+ −
+ − #ifdef __cplusplus+ −
}+ −
#endif+ −
+ − + − + − + −