ftp.nice.ch/pub/next/unix/graphics/rayshade.4.0.s.tar.gz#/rayshade.4.0/libobj/torus.h

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/*
 * torus.h
 *
 * Copyright (C) 1990, 1991, Mark Polipec, 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".
 *
 * $Id$
 *
 * $Log$
 */
#ifndef TORUS_H
#define TORUS_H

#define ObjTorusCreate(a,b,p,n) ObjCreate((ObjRef)TorusCreate(a,b,p,n), \
					TorusMethods())

/*
 * Torus
 */
typedef struct {
	Float a;		/* tube radius */
	Float b;		/* swept radius */
	Float aa, bb;		/* squares of the above */
	Trans *trans;		/* general<-->canonical transform */
} Torus;

extern Torus	*TorusCreate();
extern int	TorusIntersect(), TorusEnter(), TorusNormal();
extern void	TorusBounds(), TorusUV(), TorusStats();
extern char	*TorusName();
extern Methods	*TorusMethods();

#endif /* TORUS_H */

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