mesher.h revision f220fa62 
1/*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31/*
32 * mesher.h
33 *
34 */
35
36#ifndef __glumesher_h_
37#define __glumesher_h_
38
39#include "hull.h"
40
41class TrimRegion;
42class Backend;
43class Pool;
44// struct GridTrimVertex;
45
46
47class Mesher : virtual public TrimRegion, public Hull {
48public:
49     			Mesher( Backend & );
50			~Mesher( void );
51    void		init( unsigned int );
52    void		mesh( void );
53
54private:
55    static const float	ZERO;
56    Backend&		backend;
57
58    Pool		p;
59    unsigned int	stacksize;
60    GridTrimVertex **	vdata;
61    GridTrimVertex *	last[2];
62    int			itop;
63    int			lastedge;
64
65    inline void		openMesh( void );
66    inline void		swapMesh( void );
67    inline void		closeMesh( void );
68    inline int		isCcw( int );
69    inline int		isCw( int );
70    inline void		clearStack( void );
71    inline void		push( GridTrimVertex * );
72    inline void		pop( long );
73    inline void		move( int, int );
74    inline int 		equal( int, int );
75    inline void 	copy( int, int );
76    inline void 	output( int );
77    void		addUpper( void );
78    void		addLower( void );
79    void		addLast( void );
80    void		finishUpper( GridTrimVertex * );
81    void		finishLower( GridTrimVertex * );
82};
83#endif /* __glumesher_h_ */
84