home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
17 Bit Software 6: Level 6
/
17 Bit - Level 6 (1998)(Epic Marketing)[!].iso
/
quartz
/
q0429.dms
/
q0429.adf
/
libray
/
libtext
/
fbmbump.c
< prev
next >
Wrap
C/C++ Source or Header
|
1991-08-08
|
1KB
|
53 lines
/*
* fbmbump.c
*
* Copyright (C) 1989, 1991, Craig E. Kolb
* All rights reserved.
*
* This software may be freely copied, modified, and redistributed
* provided that this copyright notice is preserved on all copies.
*
* You may not distribute this software, in whole or in part, as part of
* any commercial product without the express consent of the authors.
*
* There is no warranty or other guarantee of fitness of this software
* for any purpose. It is provided solely "as is".
*
* $Id: fbmbump.c,v 4.0 91/07/17 14:42:21 kolb Exp Locker: kolb $
*
* $Log: fbmbump.c,v $
* Revision 4.0 91/07/17 14:42:21 kolb
* Initial version.
*
*/
#include "texture.h"
#include "fbm.h"
#include "fbmbump.h"
FBm *
FBmBumpCreate(offset, scale, h, lambda, octaves)
Float offset, h, lambda, scale;
int octaves;
{
FBm *fbm;
fbm = FBmCreate(offset, scale, h, lambda, octaves, 0., (char *)NULL);
return fbm;
}
/*ARGSUSED*/
void
FBmBumpApply(fbm, prim, ray, pos, norm, gnorm, surf)
FBm *fbm;
Geom *prim;
Ray *ray;
Vector *pos, *norm, *gnorm;
Surface *surf;
{
Vector disp;
VfBm(pos, fbm->omega, fbm->lambda, fbm->octaves, &disp);
norm->x += fbm->offset + disp.x * fbm->scale;
norm->y += fbm->offset + disp.y * fbm->scale;
norm->z += fbm->offset + disp.z * fbm->scale;
}