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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.Physics.ConvexDecompositionDotNet
31{
32 public class float4
33 {
34 public float x;
35 public float y;
36 public float z;
37 public float w;
38
39 public float4()
40 {
41 x = 0;
42 y = 0;
43 z = 0;
44 w = 0;
45 }
46
47 public float4(float _x, float _y, float _z, float _w)
48 {
49 x = _x;
50 y = _y;
51 z = _z;
52 w = _w;
53 }
54
55 public float4(float3 v, float _w)
56 {
57 x = v.x;
58 y = v.y;
59 z = v.z;
60 w = _w;
61 }
62
63 public float4(float4 f)
64 {
65 x = f.x;
66 y = f.y;
67 z = f.z;
68 w = f.w;
69 }
70
71 public float this[int i]
72 {
73 get
74 {
75 switch (i)
76 {
77 case 0: return x;
78 case 1: return y;
79 case 2: return z;
80 case 3: return w;
81 }
82 throw new ArgumentOutOfRangeException();
83 }
84 }
85
86 public float3 xyz()
87 {
88 return new float3(x, y, z);
89 }
90
91 public void setxyz(float3 xyz)
92 {
93 x = xyz.x;
94 y = xyz.y;
95 z = xyz.z;
96 }
97
98 public override int GetHashCode()
99 {
100 return x.GetHashCode() ^ y.GetHashCode() ^ z.GetHashCode() ^ w.GetHashCode();
101 }
102
103 public override bool Equals(object obj)
104 {
105 float4 f = obj as float4;
106 if (f == null)
107 return false;
108
109 return this == f;
110 }
111
112 public static float4 Homogenize(float3 v3)
113 {
114 return Homogenize(v3, 1.0f);
115 }
116
117 //C++ TO C# CONVERTER NOTE: C# does not allow default values for parameters. Overloaded methods are inserted above.
118 //ORIGINAL LINE: float4 Homogenize(const float3 &v3, const float &w =1.0f)
119 public static float4 Homogenize(float3 v3, float w)
120 {
121 return new float4(v3.x, v3.y, v3.z, w);
122 }
123
124 public static float4 cmul(float4 a, float4 b)
125 {
126 return new float4(a.x * b.x, a.y * b.y, a.z * b.z, a.w * b.w);
127 }
128
129 public static float4 operator +(float4 a, float4 b)
130 {
131 return new float4(a.x + b.x, a.y + b.y, a.z + b.z, a.w + b.w);
132 }
133 public static float4 operator -(float4 a, float4 b)
134 {
135 return new float4(a.x - b.x, a.y - b.y, a.z - b.z, a.w - b.w);
136 }
137
138 public static float4 operator *(float4 v, float4x4 m)
139 {
140 return v.x * m.x + v.y * m.y + v.z * m.z + v.w * m.w; // yes this actually works
141 }
142
143 public static bool operator ==(float4 a, float4 b)
144 {
145 // If both are null, or both are same instance, return true.
146 if (System.Object.ReferenceEquals(a, b))
147 return true;
148 // If one is null, but not both, return false.
149 if (((object)a == null) || ((object)b == null))
150 return false;
151
152 return (a.x == b.x && a.y == b.y && a.z == b.z && a.w == b.w);
153 }
154
155 public static bool operator !=(float4 a, float4 b)
156 {
157 return !(a == b);
158 }
159
160 public static float4 operator *(float4 v, float s)
161 {
162 return new float4(v.x * s, v.y * s, v.z * s, v.w * s);
163 }
164
165 public static float4 operator *(float s, float4 v)
166 {
167 return new float4(v.x * s, v.y * s, v.z * s, v.w * s);
168 }
169 }
170}