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

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/*
 * csg.h
 *
 * 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".
 *
 * $Id$
 *
 * $Log$
 */
#ifndef CSG_H
#define CSG_H

#define ObjCsgCreate(t)	ObjCreate((ObjRef)CsgCreate(t), CsgMethods())

/*
 * CSG (Constructive Solid Geometry)
 */
#define CSG_UNION	0
#define CSG_INTERSECT	1
#define CSG_DIFFERENCE	2

typedef struct Csg {
	char operator;			/* Union, Intersect, or Difference */
	struct Object *obj1, *obj2;
	int (*intmeth)();		/* Intersection method. */
	Float bounds[2][3];
} Csg;

extern char	*CsgName();
extern Csg	*CsgCreate();
extern int	CsgIntersect(), CsgConvert();
extern void	CsgBounds();
extern int	FirstCsgObj();
extern Methods	*CsgMethods();

#endif /* CSG_H */

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