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/*
* bump.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".
*
* $Id$
*
* $Log$
*/
#include "texture.h"
#include "bump.h"
/*
* Create and return a reference to a "bump" texture.
*/
Bump *
BumpCreate(size)
Float size;
{
Bump *bump;
bump = (Bump *)Malloc(sizeof(Bump));
bump->size = size;
return bump;
}
/*
* Apply a "bump" texture.
*/
void
BumpApply(bump, prim, ray, pos, norm, gnorm, surf)
Bump *bump;
Object *prim;
Ray *ray;
Vector *pos, *norm, *gnorm;
Surface *surf;
{
Vector disp;
DNoise3(pos, &disp);
norm->x += disp.x * bump->size;
norm->y += disp.y * bump->size;
norm->z += disp.z * bump->size;
(void)VecNormalize(norm);
}
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.