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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;
29
30namespace OpenSim.Region.PhysicsModule.ConvexDecompositionDotNet
31{
32 public class int3
33 {
34 public int x;
35 public int y;
36 public int z;
37
38 public int3()
39 {
40 }
41
42 public int3(int _x, int _y, int _z)
43 {
44 x = _x;
45 y = _y;
46 z = _z;
47 }
48
49 public int this[int i]
50 {
51 get
52 {
53 switch (i)
54 {
55 case 0: return x;
56 case 1: return y;
57 case 2: return z;
58 }
59 throw new ArgumentOutOfRangeException();
60 }
61 set
62 {
63 switch (i)
64 {
65 case 0: x = value; return;
66 case 1: y = value; return;
67 case 2: z = value; return;
68 }
69 throw new ArgumentOutOfRangeException();
70 }
71 }
72
73 public override int GetHashCode()
74 {
75 return x.GetHashCode() ^ y.GetHashCode() ^ z.GetHashCode();
76 }
77
78 public override bool Equals(object obj)
79 {
80 int3 i = obj as int3;
81 if (i == null)
82 return false;
83
84 return this == i;
85 }
86
87 public static bool operator ==(int3 a, int3 b)
88 {
89 // If both are null, or both are same instance, return true.
90 if (System.Object.ReferenceEquals(a, b))
91 return true;
92 // If one is null, but not both, return false.
93 if (((object)a == null) || ((object)b == null))
94 return false;
95
96 for (int i = 0; i < 3; i++)
97 {
98 if (a[i] != b[i])
99 return false;
100 }
101 return true;
102 }
103
104 public static bool operator !=(int3 a, int3 b)
105 {
106 return !(a == b);
107 }
108
109 public static int3 roll3(int3 a)
110 {
111 int tmp = a[0];
112 a[0] = a[1];
113 a[1] = a[2];
114 a[2] = tmp;
115 return a;
116 }
117
118 public static bool isa(int3 a, int3 b)
119 {
120 return (a == b || roll3(a) == b || a == roll3(b));
121 }
122
123 public static bool b2b(int3 a, int3 b)
124 {
125 return isa(a, new int3(b[2], b[1], b[0]));
126 }
127 }
128}