1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using OpenSim.Region.Physics.Manager;
namespace OpenSim.Region.Physics.OdePlugin.Meshing
{
public class Mesh
{
public List<Vertex> vertices;
public List<Triangle> triangles;
public float[] normals;
public Mesh()
{
vertices = new List<Vertex>();
triangles = new List<Triangle>();
}
public Mesh Clone()
{
Mesh result = new Mesh();
foreach (Vertex v in vertices)
{
if (v == null)
result.vertices.Add(null);
else
result.vertices.Add(v.Clone());
}
foreach (Triangle t in triangles)
{
int iV1, iV2, iV3;
iV1 = this.vertices.IndexOf(t.v1);
iV2 = this.vertices.IndexOf(t.v2);
iV3 = this.vertices.IndexOf(t.v3);
Triangle newT = new Triangle(result.vertices[iV1], result.vertices[iV2], result.vertices[iV3]);
result.Add(newT);
}
return result;
}
public void Add(Triangle triangle)
{
int i;
i = vertices.IndexOf(triangle.v1);
if (i < 0)
throw new ArgumentException("Vertex v1 not known to mesh");
i = vertices.IndexOf(triangle.v2);
if (i < 0)
throw new ArgumentException("Vertex v2 not known to mesh");
i = vertices.IndexOf(triangle.v3);
if (i < 0)
throw new ArgumentException("Vertex v3 not known to mesh");
triangles.Add(triangle);
}
public void Add(Vertex v)
{
vertices.Add(v);
}
public void Remove(Vertex v)
{
int i;
// First, remove all triangles that are build on v
for (i = 0; i < triangles.Count; i++)
{
Triangle t = triangles[i];
if (t.v1 == v || t.v2 == v || t.v3 == v)
{
triangles.RemoveAt(i);
i--;
}
}
// Second remove v itself
vertices.Remove(v);
}
public void RemoveTrianglesOutside(SimpleHull hull)
{
int i;
for (i = 0; i < triangles.Count; i++)
{
Triangle t = triangles[i];
Vertex v1 = t.v1;
Vertex v2 = t.v2;
Vertex v3 = t.v3;
PhysicsVector m = v1 + v2 + v3;
m /= 3.0f;
if (!hull.IsPointIn(new Vertex(m)))
{
triangles.RemoveAt(i);
i--;
}
}
}
public void Add(List<Vertex> lv)
{
foreach (Vertex v in lv)
{
vertices.Add(v);
}
}
public float[] getVertexListAsFloat()
{
float[] result = new float[vertices.Count * 3];
for (int i = 0; i < vertices.Count; i++)
{
Vertex v = vertices[i];
if (v == null)
continue;
result[3 * i + 0] = v.X;
result[3 * i + 1] = v.Y;
result[3 * i + 2] = v.Z;
}
GCHandle.Alloc(result, GCHandleType.Pinned);
return result;
}
public int[] getIndexListAsInt()
{
int[] result = new int[triangles.Count * 3];
for (int i = 0; i < triangles.Count; i++)
{
Triangle t = triangles[i];
result[3 * i + 0] = vertices.IndexOf(t.v1);
result[3 * i + 1] = vertices.IndexOf(t.v2);
result[3 * i + 2] = vertices.IndexOf(t.v3);
}
GCHandle.Alloc(result, GCHandleType.Pinned);
return result;
}
public void Append(Mesh newMesh)
{
foreach (Vertex v in newMesh.vertices)
vertices.Add(v);
foreach (Triangle t in newMesh.triangles)
Add(t);
}
// Do a linear transformation of mesh.
public void TransformLinear(float[,] matrix, float[] offset)
{
foreach (Vertex v in vertices)
{
if (v == null)
continue;
float x, y, z;
x = v.X * matrix[0, 0] + v.Y * matrix[1, 0] + v.Z * matrix[2, 0];
y = v.X * matrix[0, 1] + v.Y * matrix[1, 1] + v.Z * matrix[2, 1];
z = v.X * matrix[0, 2] + v.Y * matrix[1, 2] + v.Z * matrix[2, 2];
v.X = x + offset[0];
v.Y = y + offset[1];
v.Z = z + offset[2];
}
}
public void DumpRaw(String path, String name, String title)
{
if (path == null)
return;
String fileName = name + "_" + title + ".raw";
String completePath = Path.Combine(path, fileName);
StreamWriter sw = new StreamWriter(completePath);
foreach (Triangle t in triangles)
{
String s = t.ToStringRaw();
sw.WriteLine(s);
}
sw.Close();
}
}
}
|
