Merge commit 'origin/gallium-0.1' into gallium-0.2
[mesa.git] / src / glu / sgi / libnurbs / internals / mesher.h
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
41 class TrimRegion;
42 class Backend;
43 class Pool;
44 // struct GridTrimVertex;
45
46
47 class Mesher : virtual public TrimRegion, public Hull {
48 public:
49 Mesher( Backend & );
50 ~Mesher( void );
51 void init( unsigned int );
52 void mesh( void );
53
54 private:
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_ */