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1/* The MIT License
2 *
3 * Copyright (c) 2010 Intel Corporation.
4 * All rights reserved.
5 *
6 * Based on the convexdecomposition library from
7 * <http://codesuppository.googlecode.com> by John W. Ratcliff and Stan Melax.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 * THE SOFTWARE.
26 */
27
28using System;
29using System.Collections.Generic;
30using System.Diagnostics;
31
32namespace OpenSim.Region.Physics.ConvexDecompositionDotNet
33{
34 public class HullTriangle : int3
35 {
36 public int3 n = new int3();
37 public int id;
38 public int vmax;
39 public float rise;
40 private List<HullTriangle> tris;
41
42 public HullTriangle(int a, int b, int c, List<HullTriangle> tris)
43 : base(a, b, c)
44 {
45 this.tris = tris;
46
47 n = new int3(-1, -1, -1);
48 id = tris.Count;
49 tris.Add(this);
50 vmax = -1;
51 rise = 0.0f;
52 }
53
54 public void Dispose()
55 {
56 Debug.Assert(tris[id] == this);
57 tris[id] = null;
58 }
59
60 public int neib(int a, int b)
61 {
62 int i;
63
64 for (i = 0; i < 3; i++)
65 {
66 int i1 = (i + 1) % 3;
67 int i2 = (i + 2) % 3;
68 if ((this)[i] == a && (this)[i1] == b)
69 return n[i2];
70 if ((this)[i] == b && (this)[i1] == a)
71 return n[i2];
72 }
73
74 Debug.Assert(false);
75 return -1;
76 }
77
78 public void setneib(int a, int b, int value)
79 {
80 int i;
81
82 for (i = 0; i < 3; i++)
83 {
84 int i1 = (i + 1) % 3;
85 int i2 = (i + 2) % 3;
86 if ((this)[i] == a && (this)[i1] == b)
87 {
88 n[i2] = value;
89 return;
90 }
91 if ((this)[i] == b && (this)[i1] == a)
92 {
93 n[i2] = value;
94 return;
95 }
96 }
97 }
98 }
99}