summaryrefslogtreecommitdiffstats
path: root/demos/boxes/3rdparty/fbm.h
blob: b8a4a99ae4b68d749bceda0c591023bdd549e467 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
/*****************************************************************

  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