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

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/*
 * poly.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 POLY_H
#define POLY_H

#define ObjPolygonCreate(r,p)	ObjCreate((ObjRef)PolygonCreate(r,p), \
					PolygonMethods())

/*
 * Polygon
 */
typedef struct {
	Vector norm;		/* Normal to polygon */
	Float d;		/* Plane constant */
	char index;		/* Which normal coord is "dominant"? */
	Vector *points;		/* Array of vertices */
	int npoints;		/* Number of vertices */
} Polygon;

extern Polygon	*PolygonCreate();
extern Methods	*PolygonMethods();
extern int	PolygonIntersect(), PolygonEnter(), PolygonNormal();
extern void	PolygonBounds(), PolygonUV(), PolygonStats();
extern char	*PolygonName();

#endif /* POLY_H */

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