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

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/*
 * blob.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 BLOB_H
#define BLOB_H

#define ObjBlobCreate(t,m,n) ObjCreate((ObjRef)BlobCreate(t,m,n), BlobMethods())

#define R_START 1
#define R_END   0

/*
 * Blob
 */
typedef struct {
	Float rs;	/* radius */
	Float c4;	/* coeefficient */
	Float c2;	/* coeefficient */
	Float c0;	/* coeefficient */
	Float x;	/* x position */
	Float y;	/* y position */
	Float z;	/* z position */
} MetaVector;

typedef struct {
	int type,pnt;
	Float bound;
	Float c[5];
} MetaInt;

typedef struct {
	Float T;		/* Threshold   */
        int num;		/* number of points */
        MetaVector *list;	/* list of points */
	MetaInt *ilist, **iarr;
        
} Blob;

typedef struct MetaList {
	MetaVector mvec;
	struct MetaList *next;
} MetaList;

extern int	BlobIntersect(), BlobNormal();
extern void	BlobBounds(), BlobStats();
extern Blob	*BlobCreate();
extern char	*BlobName();
extern Methods	*BlobMethods();

#endif /* BLOB_H */

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