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J. Andreas Bærentzen 2003.
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J. Andreas Bærentzen 2003.
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**********************************************************************/
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**********************************************************************/
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/* Original Comment
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 * C code from the article
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 * "An Implicit Surface Polygonizer"
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 * http::www.unchainedgeometry.com/jbloom/papers/polygonizer.pdf
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 * by Jules Bloomenthal, jules@bloomenthal.com
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 * in "Graphics Gems IV", Academic Press, 1994 */
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/* polygonizer.c - implicit surface polygonizer, translated from Mesa
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 *
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 * Authored by Jules Bloomenthal, Xerox PARC.
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 * Copyright (c) Xerox Corporation, 1991.  All rights reserved.
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 * Permission is granted to reproduce, use and distribute this code for
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 * any and all purposes, provided that this notice appears in all copies.  */
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#include <string>
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#include <string>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <math.h>
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#include <math.h>
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#include <iostream>
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#include <iostream>
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#include <vector>
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#include <vector>
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		const int MASK = ((1<<HASHBIT)-1);
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		const int MASK = ((1<<HASHBIT)-1);
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		inline int HASH( int i, int j,int k)
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		inline int HASH( int i, int j,int k)
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		{
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		{
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			return (((((i&MASK)<<HASHBIT)|j&MASK)<<HASHBIT)|k&MASK);
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			return (((((i&MASK)<<HASHBIT)|(j&MASK))<<HASHBIT)|(k&MASK));
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		}
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		}
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		inline int BIT(int i, int bit)
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		inline int BIT(int i, int bit)
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		{
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		{
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			return (i>>bit)&1;
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			return (i>>bit)&1;