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-rw-r--r--OpenSim/Region/Physics/UbitMeshing/HelperTypes.cs340
-rw-r--r--OpenSim/Region/Physics/UbitMeshing/Mesh.cs401
-rw-r--r--OpenSim/Region/Physics/UbitMeshing/Meshmerizer.cs1026
-rw-r--r--OpenSim/Region/Physics/UbitMeshing/PrimMesher.cs2284
-rw-r--r--OpenSim/Region/Physics/UbitMeshing/SculptMap.cs197
-rw-r--r--OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs646
6 files changed, 4894 insertions, 0 deletions
diff --git a/OpenSim/Region/Physics/UbitMeshing/HelperTypes.cs b/OpenSim/Region/Physics/UbitMeshing/HelperTypes.cs
new file mode 100644
index 0000000..2938257
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/HelperTypes.cs
@@ -0,0 +1,340 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections.Generic;
30using System.Diagnostics;
31using System.Globalization;
32using OpenMetaverse;
33using OpenSim.Region.Physics.Manager;
34using OpenSim.Region.Physics.Meshing;
35
36public class Vertex : IComparable<Vertex>
37{
38 Vector3 vector;
39
40 public float X
41 {
42 get { return vector.X; }
43 set { vector.X = value; }
44 }
45
46 public float Y
47 {
48 get { return vector.Y; }
49 set { vector.Y = value; }
50 }
51
52 public float Z
53 {
54 get { return vector.Z; }
55 set { vector.Z = value; }
56 }
57
58 public Vertex(float x, float y, float z)
59 {
60 vector.X = x;
61 vector.Y = y;
62 vector.Z = z;
63 }
64
65 public Vertex normalize()
66 {
67 float tlength = vector.Length();
68 if (tlength != 0f)
69 {
70 float mul = 1.0f / tlength;
71 return new Vertex(vector.X * mul, vector.Y * mul, vector.Z * mul);
72 }
73 else
74 {
75 return new Vertex(0f, 0f, 0f);
76 }
77 }
78
79 public Vertex cross(Vertex v)
80 {
81 return new Vertex(vector.Y * v.Z - vector.Z * v.Y, vector.Z * v.X - vector.X * v.Z, vector.X * v.Y - vector.Y * v.X);
82 }
83
84 // disable warning: mono compiler moans about overloading
85 // operators hiding base operator but should not according to C#
86 // language spec
87#pragma warning disable 0108
88 public static Vertex operator *(Vertex v, Quaternion q)
89 {
90 // From http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/transforms/
91
92 Vertex v2 = new Vertex(0f, 0f, 0f);
93
94 v2.X = q.W * q.W * v.X +
95 2f * q.Y * q.W * v.Z -
96 2f * q.Z * q.W * v.Y +
97 q.X * q.X * v.X +
98 2f * q.Y * q.X * v.Y +
99 2f * q.Z * q.X * v.Z -
100 q.Z * q.Z * v.X -
101 q.Y * q.Y * v.X;
102
103 v2.Y =
104 2f * q.X * q.Y * v.X +
105 q.Y * q.Y * v.Y +
106 2f * q.Z * q.Y * v.Z +
107 2f * q.W * q.Z * v.X -
108 q.Z * q.Z * v.Y +
109 q.W * q.W * v.Y -
110 2f * q.X * q.W * v.Z -
111 q.X * q.X * v.Y;
112
113 v2.Z =
114 2f * q.X * q.Z * v.X +
115 2f * q.Y * q.Z * v.Y +
116 q.Z * q.Z * v.Z -
117 2f * q.W * q.Y * v.X -
118 q.Y * q.Y * v.Z +
119 2f * q.W * q.X * v.Y -
120 q.X * q.X * v.Z +
121 q.W * q.W * v.Z;
122
123 return v2;
124 }
125
126 public static Vertex operator +(Vertex v1, Vertex v2)
127 {
128 return new Vertex(v1.X + v2.X, v1.Y + v2.Y, v1.Z + v2.Z);
129 }
130
131 public static Vertex operator -(Vertex v1, Vertex v2)
132 {
133 return new Vertex(v1.X - v2.X, v1.Y - v2.Y, v1.Z - v2.Z);
134 }
135
136 public static Vertex operator *(Vertex v1, Vertex v2)
137 {
138 return new Vertex(v1.X * v2.X, v1.Y * v2.Y, v1.Z * v2.Z);
139 }
140
141 public static Vertex operator +(Vertex v1, float am)
142 {
143 v1.X += am;
144 v1.Y += am;
145 v1.Z += am;
146 return v1;
147 }
148
149 public static Vertex operator -(Vertex v1, float am)
150 {
151 v1.X -= am;
152 v1.Y -= am;
153 v1.Z -= am;
154 return v1;
155 }
156
157 public static Vertex operator *(Vertex v1, float am)
158 {
159 v1.X *= am;
160 v1.Y *= am;
161 v1.Z *= am;
162 return v1;
163 }
164
165 public static Vertex operator /(Vertex v1, float am)
166 {
167 if (am == 0f)
168 {
169 return new Vertex(0f,0f,0f);
170 }
171 float mul = 1.0f / am;
172 v1.X *= mul;
173 v1.Y *= mul;
174 v1.Z *= mul;
175 return v1;
176 }
177#pragma warning restore 0108
178
179
180 public float dot(Vertex v)
181 {
182 return X * v.X + Y * v.Y + Z * v.Z;
183 }
184
185 public Vertex(Vector3 v)
186 {
187 vector = v;
188 }
189
190 public Vertex Clone()
191 {
192 return new Vertex(X, Y, Z);
193 }
194
195 public static Vertex FromAngle(double angle)
196 {
197 return new Vertex((float) Math.Cos(angle), (float) Math.Sin(angle), 0.0f);
198 }
199
200 public float Length()
201 {
202 return vector.Length();
203 }
204
205 public virtual bool Equals(Vertex v, float tolerance)
206 {
207 Vertex diff = this - v;
208 float d = diff.Length();
209 if (d < tolerance)
210 return true;
211
212 return false;
213 }
214
215
216 public int CompareTo(Vertex other)
217 {
218 if (X < other.X)
219 return -1;
220
221 if (X > other.X)
222 return 1;
223
224 if (Y < other.Y)
225 return -1;
226
227 if (Y > other.Y)
228 return 1;
229
230 if (Z < other.Z)
231 return -1;
232
233 if (Z > other.Z)
234 return 1;
235
236 return 0;
237 }
238
239 public static bool operator >(Vertex me, Vertex other)
240 {
241 return me.CompareTo(other) > 0;
242 }
243
244 public static bool operator <(Vertex me, Vertex other)
245 {
246 return me.CompareTo(other) < 0;
247 }
248
249 public String ToRaw()
250 {
251 // Why this stuff with the number formatter?
252 // Well, the raw format uses the english/US notation of numbers
253 // where the "," separates groups of 1000 while the "." marks the border between 1 and 10E-1.
254 // The german notation uses these characters exactly vice versa!
255 // The Float.ToString() routine is a localized one, giving different results depending on the country
256 // settings your machine works with. Unusable for a machine readable file format :-(
257 NumberFormatInfo nfi = new NumberFormatInfo();
258 nfi.NumberDecimalSeparator = ".";
259 nfi.NumberDecimalDigits = 3;
260
261 String s1 = X.ToString("N2", nfi) + " " + Y.ToString("N2", nfi) + " " + Z.ToString("N2", nfi);
262
263 return s1;
264 }
265}
266
267public class Triangle
268{
269 public Vertex v1;
270 public Vertex v2;
271 public Vertex v3;
272
273 public Triangle(Vertex _v1, Vertex _v2, Vertex _v3)
274 {
275 v1 = _v1;
276 v2 = _v2;
277 v3 = _v3;
278 }
279
280 public Triangle(float _v1x,float _v1y,float _v1z,
281 float _v2x,float _v2y,float _v2z,
282 float _v3x,float _v3y,float _v3z)
283 {
284 v1 = new Vertex(_v1x, _v1y, _v1z);
285 v2 = new Vertex(_v2x, _v2y, _v2z);
286 v3 = new Vertex(_v3x, _v3y, _v3z);
287 }
288
289 public override String ToString()
290 {
291 NumberFormatInfo nfi = new NumberFormatInfo();
292 nfi.CurrencyDecimalDigits = 2;
293 nfi.CurrencyDecimalSeparator = ".";
294
295 String s1 = "<" + v1.X.ToString(nfi) + "," + v1.Y.ToString(nfi) + "," + v1.Z.ToString(nfi) + ">";
296 String s2 = "<" + v2.X.ToString(nfi) + "," + v2.Y.ToString(nfi) + "," + v2.Z.ToString(nfi) + ">";
297 String s3 = "<" + v3.X.ToString(nfi) + "," + v3.Y.ToString(nfi) + "," + v3.Z.ToString(nfi) + ">";
298
299 return s1 + ";" + s2 + ";" + s3;
300 }
301
302 public Vector3 getNormal()
303 {
304 // Vertices
305
306 // Vectors for edges
307 Vector3 e1;
308 Vector3 e2;
309
310 e1 = new Vector3(v1.X - v2.X, v1.Y - v2.Y, v1.Z - v2.Z);
311 e2 = new Vector3(v1.X - v3.X, v1.Y - v3.Y, v1.Z - v3.Z);
312
313 // Cross product for normal
314 Vector3 n = Vector3.Cross(e1, e2);
315
316 // Length
317 float l = n.Length();
318
319 // Normalized "normal"
320 n = n/l;
321
322 return n;
323 }
324
325 public void invertNormal()
326 {
327 Vertex vt;
328 vt = v1;
329 v1 = v2;
330 v2 = vt;
331 }
332
333 // Dumps a triangle in the "raw faces" format, blender can import. This is for visualisation and
334 // debugging purposes
335 public String ToStringRaw()
336 {
337 String output = v1.ToRaw() + " " + v2.ToRaw() + " " + v3.ToRaw();
338 return output;
339 }
340}
diff --git a/OpenSim/Region/Physics/UbitMeshing/Mesh.cs b/OpenSim/Region/Physics/UbitMeshing/Mesh.cs
new file mode 100644
index 0000000..c715642
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/Mesh.cs
@@ -0,0 +1,401 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections.Generic;
30using System.IO;
31using System.Runtime.InteropServices;
32using OpenSim.Region.Physics.Manager;
33using PrimMesher;
34using OpenMetaverse;
35
36namespace OpenSim.Region.Physics.Meshing
37{
38 public class Mesh : IMesh
39 {
40 private Dictionary<Vertex, int> m_vertices;
41 private List<Triangle> m_triangles;
42 GCHandle m_pinnedVertexes;
43 GCHandle m_pinnedIndex;
44 IntPtr m_verticesPtr = IntPtr.Zero;
45 int m_vertexCount = 0;
46 IntPtr m_indicesPtr = IntPtr.Zero;
47 int m_indexCount = 0;
48 public float[] m_normals;
49 Vector3 _centroid;
50 int _centroidDiv;
51
52 private class vertexcomp : IEqualityComparer<Vertex>
53 {
54 public bool Equals(Vertex v1, Vertex v2)
55 {
56 if (v1.X == v2.X && v1.Y == v2.Y && v1.Z == v2.Z)
57 return true;
58 else
59 return false;
60 }
61 public int GetHashCode(Vertex v)
62 {
63 int a = v.X.GetHashCode();
64 int b = v.Y.GetHashCode();
65 int c = v.Z.GetHashCode();
66 return (a << 16) ^ (b << 8) ^ c;
67 }
68
69 }
70
71 public Mesh()
72 {
73 vertexcomp vcomp = new vertexcomp();
74
75 m_vertices = new Dictionary<Vertex, int>(vcomp);
76 m_triangles = new List<Triangle>();
77 _centroid = Vector3.Zero;
78 _centroidDiv = 0;
79 }
80
81 public Mesh Clone()
82 {
83 Mesh result = new Mesh();
84
85 foreach (Triangle t in m_triangles)
86 {
87 result.Add(new Triangle(t.v1.Clone(), t.v2.Clone(), t.v3.Clone()));
88 }
89 result._centroid = _centroid;
90 result._centroidDiv = _centroidDiv;
91 return result;
92 }
93
94 public void Add(Triangle triangle)
95 {
96 if (m_pinnedIndex.IsAllocated || m_pinnedVertexes.IsAllocated || m_indicesPtr != IntPtr.Zero || m_verticesPtr != IntPtr.Zero)
97 throw new NotSupportedException("Attempt to Add to a pinned Mesh");
98 // If a vertex of the triangle is not yet in the vertices list,
99 // add it and set its index to the current index count
100 // vertex == seems broken
101 // skip colapsed triangles
102 if ((triangle.v1.X == triangle.v2.X && triangle.v1.Y == triangle.v2.Y && triangle.v1.Z == triangle.v2.Z)
103 || (triangle.v1.X == triangle.v3.X && triangle.v1.Y == triangle.v3.Y && triangle.v1.Z == triangle.v3.Z)
104 || (triangle.v2.X == triangle.v3.X && triangle.v2.Y == triangle.v3.Y && triangle.v2.Z == triangle.v3.Z)
105 )
106 {
107 return;
108 }
109
110 if (m_vertices.Count == 0)
111 {
112 _centroidDiv = 0;
113 _centroid = Vector3.Zero;
114 }
115
116 if (!m_vertices.ContainsKey(triangle.v1))
117 {
118 m_vertices[triangle.v1] = m_vertices.Count;
119 _centroid.X += triangle.v1.X;
120 _centroid.Y += triangle.v1.Y;
121 _centroid.Z += triangle.v1.Z;
122 _centroidDiv++;
123 }
124 if (!m_vertices.ContainsKey(triangle.v2))
125 {
126 m_vertices[triangle.v2] = m_vertices.Count;
127 _centroid.X += triangle.v2.X;
128 _centroid.Y += triangle.v2.Y;
129 _centroid.Z += triangle.v2.Z;
130 _centroidDiv++;
131 }
132 if (!m_vertices.ContainsKey(triangle.v3))
133 {
134 m_vertices[triangle.v3] = m_vertices.Count;
135 _centroid.X += triangle.v3.X;
136 _centroid.Y += triangle.v3.Y;
137 _centroid.Z += triangle.v3.Z;
138 _centroidDiv++;
139 }
140 m_triangles.Add(triangle);
141 }
142
143 public Vector3 GetCentroid()
144 {
145 if (_centroidDiv > 0)
146 return new Vector3(_centroid.X / _centroidDiv, _centroid.Y / _centroidDiv, _centroid.Z / _centroidDiv);
147 else
148 return Vector3.Zero;
149 }
150
151 public void CalcNormals()
152 {
153 int iTriangles = m_triangles.Count;
154
155 this.m_normals = new float[iTriangles * 3];
156
157 int i = 0;
158 foreach (Triangle t in m_triangles)
159 {
160 float ux, uy, uz;
161 float vx, vy, vz;
162 float wx, wy, wz;
163
164 ux = t.v1.X;
165 uy = t.v1.Y;
166 uz = t.v1.Z;
167
168 vx = t.v2.X;
169 vy = t.v2.Y;
170 vz = t.v2.Z;
171
172 wx = t.v3.X;
173 wy = t.v3.Y;
174 wz = t.v3.Z;
175
176
177 // Vectors for edges
178 float e1x, e1y, e1z;
179 float e2x, e2y, e2z;
180
181 e1x = ux - vx;
182 e1y = uy - vy;
183 e1z = uz - vz;
184
185 e2x = ux - wx;
186 e2y = uy - wy;
187 e2z = uz - wz;
188
189
190 // Cross product for normal
191 float nx, ny, nz;
192 nx = e1y * e2z - e1z * e2y;
193 ny = e1z * e2x - e1x * e2z;
194 nz = e1x * e2y - e1y * e2x;
195
196 // Length
197 float l = (float)Math.Sqrt(nx * nx + ny * ny + nz * nz);
198 float lReciprocal = 1.0f / l;
199
200 // Normalized "normal"
201 //nx /= l;
202 //ny /= l;
203 //nz /= l;
204
205 m_normals[i] = nx * lReciprocal;
206 m_normals[i + 1] = ny * lReciprocal;
207 m_normals[i + 2] = nz * lReciprocal;
208
209 i += 3;
210 }
211 }
212
213 public List<Vector3> getVertexList()
214 {
215 List<Vector3> result = new List<Vector3>();
216 foreach (Vertex v in m_vertices.Keys)
217 {
218 result.Add(new Vector3(v.X, v.Y, v.Z));
219 }
220 return result;
221 }
222
223 private float[] getVertexListAsFloat()
224 {
225 if (m_vertices == null)
226 throw new NotSupportedException();
227 float[] result = new float[m_vertices.Count * 3];
228 foreach (KeyValuePair<Vertex, int> kvp in m_vertices)
229 {
230 Vertex v = kvp.Key;
231 int i = kvp.Value;
232 result[3 * i + 0] = v.X;
233 result[3 * i + 1] = v.Y;
234 result[3 * i + 2] = v.Z;
235 }
236 return result;
237 }
238
239 public float[] getVertexListAsFloatLocked()
240 {
241 if (m_pinnedVertexes.IsAllocated)
242 return (float[])(m_pinnedVertexes.Target);
243
244 float[] result = getVertexListAsFloat();
245 m_pinnedVertexes = GCHandle.Alloc(result, GCHandleType.Pinned);
246 // Inform the garbage collector of this unmanaged allocation so it can schedule
247 // the next GC round more intelligently
248 GC.AddMemoryPressure(Buffer.ByteLength(result));
249
250 return result;
251 }
252
253 public void getVertexListAsPtrToFloatArray(out IntPtr vertices, out int vertexStride, out int vertexCount)
254 {
255 // A vertex is 3 floats
256 vertexStride = 3 * sizeof(float);
257
258 // If there isn't an unmanaged array allocated yet, do it now
259 if (m_verticesPtr == IntPtr.Zero)
260 {
261 float[] vertexList = getVertexListAsFloat();
262 // Each vertex is 3 elements (floats)
263 m_vertexCount = vertexList.Length / 3;
264 int byteCount = m_vertexCount * vertexStride;
265 m_verticesPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(byteCount);
266 System.Runtime.InteropServices.Marshal.Copy(vertexList, 0, m_verticesPtr, m_vertexCount * 3);
267 }
268 vertices = m_verticesPtr;
269 vertexCount = m_vertexCount;
270 }
271
272 public int[] getIndexListAsInt()
273 {
274 if (m_triangles == null)
275 throw new NotSupportedException();
276 int[] result = new int[m_triangles.Count * 3];
277 for (int i = 0; i < m_triangles.Count; i++)
278 {
279 Triangle t = m_triangles[i];
280 result[3 * i + 0] = m_vertices[t.v1];
281 result[3 * i + 1] = m_vertices[t.v2];
282 result[3 * i + 2] = m_vertices[t.v3];
283 }
284 return result;
285 }
286
287 /// <summary>
288 /// creates a list of index values that defines triangle faces. THIS METHOD FREES ALL NON-PINNED MESH DATA
289 /// </summary>
290 /// <returns></returns>
291 public int[] getIndexListAsIntLocked()
292 {
293 if (m_pinnedIndex.IsAllocated)
294 return (int[])(m_pinnedIndex.Target);
295
296 int[] result = getIndexListAsInt();
297 m_pinnedIndex = GCHandle.Alloc(result, GCHandleType.Pinned);
298 // Inform the garbage collector of this unmanaged allocation so it can schedule
299 // the next GC round more intelligently
300 GC.AddMemoryPressure(Buffer.ByteLength(result));
301
302 return result;
303 }
304
305 public void getIndexListAsPtrToIntArray(out IntPtr indices, out int triStride, out int indexCount)
306 {
307 // If there isn't an unmanaged array allocated yet, do it now
308 if (m_indicesPtr == IntPtr.Zero)
309 {
310 int[] indexList = getIndexListAsInt();
311 m_indexCount = indexList.Length;
312 int byteCount = m_indexCount * sizeof(int);
313 m_indicesPtr = System.Runtime.InteropServices.Marshal.AllocHGlobal(byteCount);
314 System.Runtime.InteropServices.Marshal.Copy(indexList, 0, m_indicesPtr, m_indexCount);
315 }
316 // A triangle is 3 ints (indices)
317 triStride = 3 * sizeof(int);
318 indices = m_indicesPtr;
319 indexCount = m_indexCount;
320 }
321
322 public void releasePinned()
323 {
324 if (m_pinnedVertexes.IsAllocated)
325 m_pinnedVertexes.Free();
326 if (m_pinnedIndex.IsAllocated)
327 m_pinnedIndex.Free();
328 if (m_verticesPtr != IntPtr.Zero)
329 {
330 System.Runtime.InteropServices.Marshal.FreeHGlobal(m_verticesPtr);
331 m_verticesPtr = IntPtr.Zero;
332 }
333 if (m_indicesPtr != IntPtr.Zero)
334 {
335 System.Runtime.InteropServices.Marshal.FreeHGlobal(m_indicesPtr);
336 m_indicesPtr = IntPtr.Zero;
337 }
338 }
339
340 /// <summary>
341 /// frees up the source mesh data to minimize memory - call this method after calling get*Locked() functions
342 /// </summary>
343 public void releaseSourceMeshData()
344 {
345 m_triangles = null;
346 m_vertices = null;
347 }
348
349 public void Append(IMesh newMesh)
350 {
351 if (m_pinnedIndex.IsAllocated || m_pinnedVertexes.IsAllocated || m_indicesPtr != IntPtr.Zero || m_verticesPtr != IntPtr.Zero)
352 throw new NotSupportedException("Attempt to Append to a pinned Mesh");
353
354 if (!(newMesh is Mesh))
355 return;
356
357 foreach (Triangle t in ((Mesh)newMesh).m_triangles)
358 Add(t);
359 }
360
361 // Do a linear transformation of mesh.
362 public void TransformLinear(float[,] matrix, float[] offset)
363 {
364 if (m_pinnedIndex.IsAllocated || m_pinnedVertexes.IsAllocated || m_indicesPtr != IntPtr.Zero || m_verticesPtr != IntPtr.Zero)
365 throw new NotSupportedException("Attempt to TransformLinear a pinned Mesh");
366
367 foreach (Vertex v in m_vertices.Keys)
368 {
369 if (v == null)
370 continue;
371 float x, y, z;
372 x = v.X*matrix[0, 0] + v.Y*matrix[1, 0] + v.Z*matrix[2, 0];
373 y = v.X*matrix[0, 1] + v.Y*matrix[1, 1] + v.Z*matrix[2, 1];
374 z = v.X*matrix[0, 2] + v.Y*matrix[1, 2] + v.Z*matrix[2, 2];
375 v.X = x + offset[0];
376 v.Y = y + offset[1];
377 v.Z = z + offset[2];
378 }
379 }
380
381 public void DumpRaw(String path, String name, String title)
382 {
383 if (path == null)
384 return;
385 String fileName = name + "_" + title + ".raw";
386 String completePath = System.IO.Path.Combine(path, fileName);
387 StreamWriter sw = new StreamWriter(completePath);
388 foreach (Triangle t in m_triangles)
389 {
390 String s = t.ToStringRaw();
391 sw.WriteLine(s);
392 }
393 sw.Close();
394 }
395
396 public void TrimExcess()
397 {
398 m_triangles.TrimExcess();
399 }
400 }
401}
diff --git a/OpenSim/Region/Physics/UbitMeshing/Meshmerizer.cs b/OpenSim/Region/Physics/UbitMeshing/Meshmerizer.cs
new file mode 100644
index 0000000..f002bba
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/Meshmerizer.cs
@@ -0,0 +1,1026 @@
1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27//#define SPAM
28
29using System;
30using System.Collections.Generic;
31using OpenSim.Framework;
32using OpenSim.Region.Physics.Manager;
33using OpenMetaverse;
34using OpenMetaverse.StructuredData;
35using System.Drawing;
36using System.Drawing.Imaging;
37using System.IO.Compression;
38using PrimMesher;
39using log4net;
40using Nini.Config;
41using System.Reflection;
42using System.IO;
43using ComponentAce.Compression.Libs.zlib;
44using OpenSim.Region.Physics.ConvexDecompositionDotNet;
45
46namespace OpenSim.Region.Physics.Meshing
47{
48 public class MeshmerizerPlugin : IMeshingPlugin
49 {
50 public MeshmerizerPlugin()
51 {
52 }
53
54 public string GetName()
55 {
56 return "UbitMeshmerizer";
57 }
58
59 public IMesher GetMesher(IConfigSource config)
60 {
61 return new Meshmerizer(config);
62 }
63 }
64
65 public class Meshmerizer : IMesher
66 {
67 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
68
69 // Setting baseDir to a path will enable the dumping of raw files
70 // raw files can be imported by blender so a visual inspection of the results can be done
71#if SPAM
72 const string baseDir = "rawFiles";
73#else
74 private const string baseDir = null; //"rawFiles";
75#endif
76
77 private bool cacheSculptMaps = true;
78 private bool cacheSculptAlphaMaps = true;
79
80 private string decodedSculptMapPath = null;
81 private bool useMeshiesPhysicsMesh = false;
82
83 private float minSizeForComplexMesh = 0.2f; // prims with all dimensions smaller than this will have a bounding box mesh
84
85 private Dictionary<ulong, Mesh> m_uniqueMeshes = new Dictionary<ulong, Mesh>();
86
87 public Meshmerizer(IConfigSource config)
88 {
89 IConfig start_config = config.Configs["Startup"];
90 IConfig mesh_config = config.Configs["Mesh"];
91
92 decodedSculptMapPath = start_config.GetString("DecodedSculptMapPath","j2kDecodeCache");
93
94 cacheSculptMaps = start_config.GetBoolean("CacheSculptMaps", cacheSculptMaps);
95
96 if (Environment.OSVersion.Platform == PlatformID.Unix)
97 {
98 cacheSculptAlphaMaps = false;
99 }
100 else
101 cacheSculptAlphaMaps = cacheSculptMaps;
102
103 if(mesh_config != null)
104 useMeshiesPhysicsMesh = mesh_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
105
106 try
107 {
108 if (!Directory.Exists(decodedSculptMapPath))
109 Directory.CreateDirectory(decodedSculptMapPath);
110 }
111 catch (Exception e)
112 {
113 m_log.WarnFormat("[SCULPT]: Unable to create {0} directory: ", decodedSculptMapPath, e.Message);
114 }
115 }
116
117 /// <summary>
118 /// creates a simple box mesh of the specified size. This mesh is of very low vertex count and may
119 /// be useful as a backup proxy when level of detail is not needed or when more complex meshes fail
120 /// for some reason
121 /// </summary>
122 /// <param name="minX"></param>
123 /// <param name="maxX"></param>
124 /// <param name="minY"></param>
125 /// <param name="maxY"></param>
126 /// <param name="minZ"></param>
127 /// <param name="maxZ"></param>
128 /// <returns></returns>
129 private static Mesh CreateSimpleBoxMesh(float minX, float maxX, float minY, float maxY, float minZ, float maxZ)
130 {
131 Mesh box = new Mesh();
132 List<Vertex> vertices = new List<Vertex>();
133 // bottom
134
135 vertices.Add(new Vertex(minX, maxY, minZ));
136 vertices.Add(new Vertex(maxX, maxY, minZ));
137 vertices.Add(new Vertex(maxX, minY, minZ));
138 vertices.Add(new Vertex(minX, minY, minZ));
139
140 box.Add(new Triangle(vertices[0], vertices[1], vertices[2]));
141 box.Add(new Triangle(vertices[0], vertices[2], vertices[3]));
142
143 // top
144
145 vertices.Add(new Vertex(maxX, maxY, maxZ));
146 vertices.Add(new Vertex(minX, maxY, maxZ));
147 vertices.Add(new Vertex(minX, minY, maxZ));
148 vertices.Add(new Vertex(maxX, minY, maxZ));
149
150 box.Add(new Triangle(vertices[4], vertices[5], vertices[6]));
151 box.Add(new Triangle(vertices[4], vertices[6], vertices[7]));
152
153 // sides
154
155 box.Add(new Triangle(vertices[5], vertices[0], vertices[3]));
156 box.Add(new Triangle(vertices[5], vertices[3], vertices[6]));
157
158 box.Add(new Triangle(vertices[1], vertices[0], vertices[5]));
159 box.Add(new Triangle(vertices[1], vertices[5], vertices[4]));
160
161 box.Add(new Triangle(vertices[7], vertices[1], vertices[4]));
162 box.Add(new Triangle(vertices[7], vertices[2], vertices[1]));
163
164 box.Add(new Triangle(vertices[3], vertices[2], vertices[7]));
165 box.Add(new Triangle(vertices[3], vertices[7], vertices[6]));
166
167 return box;
168 }
169
170 /// <summary>
171 /// Creates a simple bounding box mesh for a complex input mesh
172 /// </summary>
173 /// <param name="meshIn"></param>
174 /// <returns></returns>
175 private static Mesh CreateBoundingBoxMesh(Mesh meshIn)
176 {
177 float minX = float.MaxValue;
178 float maxX = float.MinValue;
179 float minY = float.MaxValue;
180 float maxY = float.MinValue;
181 float minZ = float.MaxValue;
182 float maxZ = float.MinValue;
183
184 foreach (Vector3 v in meshIn.getVertexList())
185 {
186 if (v.X < minX) minX = v.X;
187 if (v.Y < minY) minY = v.Y;
188 if (v.Z < minZ) minZ = v.Z;
189
190 if (v.X > maxX) maxX = v.X;
191 if (v.Y > maxY) maxY = v.Y;
192 if (v.Z > maxZ) maxZ = v.Z;
193 }
194
195 return CreateSimpleBoxMesh(minX, maxX, minY, maxY, minZ, maxZ);
196 }
197
198 private void ReportPrimError(string message, string primName, PrimMesh primMesh)
199 {
200 m_log.Error(message);
201 m_log.Error("\nPrim Name: " + primName);
202 m_log.Error("****** PrimMesh Parameters ******\n" + primMesh.ParamsToDisplayString());
203 }
204
205 /// <summary>
206 /// Add a submesh to an existing list of coords and faces.
207 /// </summary>
208 /// <param name="subMeshData"></param>
209 /// <param name="size">Size of entire object</param>
210 /// <param name="coords"></param>
211 /// <param name="faces"></param>
212 private void AddSubMesh(OSDMap subMeshData, Vector3 size, List<Coord> coords, List<Face> faces)
213 {
214 // Console.WriteLine("subMeshMap for {0} - {1}", primName, Util.GetFormattedXml((OSD)subMeshMap));
215
216 // As per http://wiki.secondlife.com/wiki/Mesh/Mesh_Asset_Format, some Mesh Level
217 // of Detail Blocks (maps) contain just a NoGeometry key to signal there is no
218 // geometry for this submesh.
219 if (subMeshData.ContainsKey("NoGeometry") && ((OSDBoolean)subMeshData["NoGeometry"]))
220 return;
221
222 OpenMetaverse.Vector3 posMax;
223 OpenMetaverse.Vector3 posMin;
224 if (subMeshData.ContainsKey("PositionDomain"))
225 {
226 posMax = ((OSDMap)subMeshData["PositionDomain"])["Max"].AsVector3();
227 posMin = ((OSDMap)subMeshData["PositionDomain"])["Min"].AsVector3();
228 }
229 else
230 {
231 posMax = new Vector3(0.5f, 0.5f, 0.5f);
232 posMin = new Vector3(-0.5f, -0.5f, -0.5f);
233 }
234
235 ushort faceIndexOffset = (ushort)coords.Count;
236
237 byte[] posBytes = subMeshData["Position"].AsBinary();
238 for (int i = 0; i < posBytes.Length; i += 6)
239 {
240 ushort uX = Utils.BytesToUInt16(posBytes, i);
241 ushort uY = Utils.BytesToUInt16(posBytes, i + 2);
242 ushort uZ = Utils.BytesToUInt16(posBytes, i + 4);
243
244 Coord c = new Coord(
245 Utils.UInt16ToFloat(uX, posMin.X, posMax.X) * size.X,
246 Utils.UInt16ToFloat(uY, posMin.Y, posMax.Y) * size.Y,
247 Utils.UInt16ToFloat(uZ, posMin.Z, posMax.Z) * size.Z);
248
249 coords.Add(c);
250 }
251
252 byte[] triangleBytes = subMeshData["TriangleList"].AsBinary();
253 for (int i = 0; i < triangleBytes.Length; i += 6)
254 {
255 ushort v1 = (ushort)(Utils.BytesToUInt16(triangleBytes, i) + faceIndexOffset);
256 ushort v2 = (ushort)(Utils.BytesToUInt16(triangleBytes, i + 2) + faceIndexOffset);
257 ushort v3 = (ushort)(Utils.BytesToUInt16(triangleBytes, i + 4) + faceIndexOffset);
258 Face f = new Face(v1, v2, v3);
259 faces.Add(f);
260 }
261 }
262
263 /// <summary>
264 /// Create a physics mesh from data that comes with the prim. The actual data used depends on the prim type.
265 /// </summary>
266 /// <param name="primName"></param>
267 /// <param name="primShape"></param>
268 /// <param name="size"></param>
269 /// <param name="lod"></param>
270 /// <returns></returns>
271 private Mesh CreateMeshFromPrimMesher(string primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool convex)
272 {
273// m_log.DebugFormat(
274// "[MESH]: Creating physics proxy for {0}, shape {1}",
275// primName, (OpenMetaverse.SculptType)primShape.SculptType);
276
277 List<Coord> coords;
278 List<Face> faces;
279
280 if (primShape.SculptEntry)
281 {
282 if (((OpenMetaverse.SculptType)primShape.SculptType) == SculptType.Mesh)
283 {
284 if (!useMeshiesPhysicsMesh)
285 return null;
286
287 if (!GenerateCoordsAndFacesFromPrimMeshData(primName, primShape, size, out coords, out faces, convex))
288 return null;
289 }
290 else
291 {
292 if (!GenerateCoordsAndFacesFromPrimSculptData(primName, primShape, size, lod, out coords, out faces))
293 return null;
294 }
295 }
296 else
297 {
298 if (!GenerateCoordsAndFacesFromPrimShapeData(primName, primShape, size, lod, out coords, out faces))
299 return null;
300 }
301
302 primShape.SculptData = Utils.EmptyBytes;
303
304 int numCoords = coords.Count;
305 int numFaces = faces.Count;
306
307 Mesh mesh = new Mesh();
308 // Add the corresponding triangles to the mesh
309 for (int i = 0; i < numFaces; i++)
310 {
311 Face f = faces[i];
312 mesh.Add(new Triangle(coords[f.v1].X, coords[f.v1].Y, coords[f.v1].Z,
313 coords[f.v2].X, coords[f.v2].Y, coords[f.v2].Z,
314 coords[f.v3].X, coords[f.v3].Y, coords[f.v3].Z));
315 }
316
317 return mesh;
318 }
319
320 /// <summary>
321 /// Generate the co-ords and faces necessary to construct a mesh from the mesh data the accompanies a prim.
322 /// </summary>
323 /// <param name="primName"></param>
324 /// <param name="primShape"></param>
325 /// <param name="size"></param>
326 /// <param name="coords">Coords are added to this list by the method.</param>
327 /// <param name="faces">Faces are added to this list by the method.</param>
328 /// <returns>true if coords and faces were successfully generated, false if not</returns>
329 private bool GenerateCoordsAndFacesFromPrimMeshData(
330 string primName, PrimitiveBaseShape primShape, Vector3 size, out List<Coord> coords, out List<Face> faces, bool convex)
331 {
332// m_log.DebugFormat("[MESH]: experimental mesh proxy generation for {0}", primName);
333
334 bool usemesh = false;
335
336 coords = new List<Coord>();
337 faces = new List<Face>();
338 OSD meshOsd = null;
339
340 if (primShape.SculptData.Length <= 0)
341 {
342 m_log.InfoFormat("[MESH]: asset data for {0} is zero length", primName);
343 return false;
344 }
345
346 long start = 0;
347 using (MemoryStream data = new MemoryStream(primShape.SculptData))
348 {
349 try
350 {
351 OSD osd = OSDParser.DeserializeLLSDBinary(data);
352 if (osd is OSDMap)
353 meshOsd = (OSDMap)osd;
354 else
355 {
356 m_log.Warn("[Mesh}: unable to cast mesh asset to OSDMap");
357 return false;
358 }
359 }
360 catch (Exception e)
361 {
362 m_log.Error("[MESH]: Exception deserializing mesh asset header:" + e.ToString());
363 }
364
365 start = data.Position;
366 }
367
368 if (meshOsd is OSDMap)
369 {
370 OSDMap physicsParms = null;
371 OSDMap map = (OSDMap)meshOsd;
372
373 if (!convex)
374 {
375 if (map.ContainsKey("physics_shape"))
376 physicsParms = (OSDMap)map["physics_shape"]; // old asset format
377 else if (map.ContainsKey("physics_mesh"))
378 physicsParms = (OSDMap)map["physics_mesh"]; // new asset format
379
380 if (physicsParms != null)
381 usemesh = true;
382 }
383
384 if(!usemesh && (map.ContainsKey("physics_convex")))
385 physicsParms = (OSDMap)map["physics_convex"];
386
387
388 if (physicsParms == null)
389 {
390 m_log.Warn("[MESH]: unknown mesh type");
391 return false;
392 }
393
394 int physOffset = physicsParms["offset"].AsInteger() + (int)start;
395 int physSize = physicsParms["size"].AsInteger();
396
397 if (physOffset < 0 || physSize == 0)
398 return false; // no mesh data in asset
399
400 OSD decodedMeshOsd = new OSD();
401 byte[] meshBytes = new byte[physSize];
402 System.Buffer.BlockCopy(primShape.SculptData, physOffset, meshBytes, 0, physSize);
403// byte[] decompressed = new byte[physSize * 5];
404 try
405 {
406 using (MemoryStream inMs = new MemoryStream(meshBytes))
407 {
408 using (MemoryStream outMs = new MemoryStream())
409 {
410 using (ZOutputStream zOut = new ZOutputStream(outMs))
411 {
412 byte[] readBuffer = new byte[2048];
413 int readLen = 0;
414 while ((readLen = inMs.Read(readBuffer, 0, readBuffer.Length)) > 0)
415 {
416 zOut.Write(readBuffer, 0, readLen);
417 }
418 zOut.Flush();
419 outMs.Seek(0, SeekOrigin.Begin);
420
421 byte[] decompressedBuf = outMs.GetBuffer();
422
423 decodedMeshOsd = OSDParser.DeserializeLLSDBinary(decompressedBuf);
424 }
425 }
426 }
427 }
428 catch (Exception e)
429 {
430 m_log.Error("[MESH]: exception decoding physical mesh: " + e.ToString());
431 return false;
432 }
433
434 if (usemesh)
435 {
436 OSDArray decodedMeshOsdArray = null;
437
438 // physics_shape is an array of OSDMaps, one for each submesh
439 if (decodedMeshOsd is OSDArray)
440 {
441 // Console.WriteLine("decodedMeshOsd for {0} - {1}", primName, Util.GetFormattedXml(decodedMeshOsd));
442
443 decodedMeshOsdArray = (OSDArray)decodedMeshOsd;
444 foreach (OSD subMeshOsd in decodedMeshOsdArray)
445 {
446 if (subMeshOsd is OSDMap)
447 AddSubMesh(subMeshOsd as OSDMap, size, coords, faces);
448 }
449 }
450 }
451 else
452 {
453 OSDMap cmap = (OSDMap)decodedMeshOsd;
454 if (cmap == null)
455 return false;
456
457 byte[] data;
458
459 List<float3> vs = new List<float3>();
460 PHullResult hullr = new PHullResult();
461 float3 f3;
462 Coord c;
463 Face f;
464 Vector3 range;
465 Vector3 min;
466
467 const float invMaxU16 = 1.0f / 65535f;
468 int t1;
469 int t2;
470 int t3;
471 int i;
472 int nverts;
473 int nindexs;
474
475 if (cmap.ContainsKey("Max"))
476 range = cmap["Max"].AsVector3();
477 else
478 range = new Vector3(0.5f, 0.5f, 0.5f);
479
480 if (cmap.ContainsKey("Min"))
481 min = cmap["Min"].AsVector3();
482 else
483 min = new Vector3(-0.5f, -0.5f, -0.5f);
484
485 range = range - min;
486 range *= invMaxU16;
487
488 if (!convex && cmap.ContainsKey("HullList") && cmap.ContainsKey("Positions"))
489 {
490 List<int> hsizes = new List<int>();
491 int totalpoints = 0;
492 data = cmap["HullList"].AsBinary();
493 for (i = 0; i < data.Length; i++)
494 {
495 t1 = data[i];
496 if (t1 == 0)
497 t1 = 256;
498 totalpoints += t1;
499 hsizes.Add(t1);
500 }
501
502 data = cmap["Positions"].AsBinary();
503 int ptr = 0;
504 int vertsoffset = 0;
505
506 if (totalpoints == data.Length / 6) // 2 bytes per coord, 3 coords per point
507 {
508 foreach (int hullsize in hsizes)
509 {
510 for (i = 0; i < hullsize; i++ )
511 {
512 t1 = data[ptr++];
513 t1 += data[ptr++] << 8;
514 t2 = data[ptr++];
515 t2 += data[ptr++] << 8;
516 t3 = data[ptr++];
517 t3 += data[ptr++] << 8;
518
519 f3 = new float3((t1 * range.X + min.X) * size.X,
520 (t2 * range.Y + min.Y) * size.Y,
521 (t3 * range.Z + min.Z) * size.Z);
522 vs.Add(f3);
523 }
524
525 if(hullsize <3)
526 {
527 vs.Clear();
528 continue;
529 }
530
531 if (hullsize <5)
532 {
533 foreach (float3 point in vs)
534 {
535 c.X = point.x;
536 c.Y = point.y;
537 c.Z = point.z;
538 coords.Add(c);
539 }
540 f = new Face(vertsoffset, vertsoffset + 1, vertsoffset + 2);
541 faces.Add(f);
542
543 if (hullsize == 4)
544 {
545 // not sure about orientation..
546 f = new Face(vertsoffset, vertsoffset + 2, vertsoffset + 3);
547 faces.Add(f);
548 f = new Face(vertsoffset, vertsoffset + 3, vertsoffset + 1);
549 faces.Add(f);
550 f = new Face(vertsoffset + 3, vertsoffset + 2, vertsoffset + 1);
551 faces.Add(f);
552 }
553 vertsoffset += vs.Count;
554 vs.Clear();
555 continue;
556 }
557
558 if (!HullUtils.ComputeHull(vs, ref hullr, 0, 0.0f))
559 {
560 vs.Clear();
561 continue;
562 }
563
564 nverts = hullr.Vertices.Count;
565 nindexs = hullr.Indices.Count;
566
567 if (nindexs % 3 != 0)
568 {
569 vs.Clear();
570 continue;
571 }
572
573 for (i = 0; i < nverts; i++)
574 {
575 c.X = hullr.Vertices[i].x;
576 c.Y = hullr.Vertices[i].y;
577 c.Z = hullr.Vertices[i].z;
578 coords.Add(c);
579 }
580
581 for (i = 0; i < nindexs; i += 3)
582 {
583 t1 = hullr.Indices[i];
584 if (t1 > nverts)
585 break;
586 t2 = hullr.Indices[i + 1];
587 if (t2 > nverts)
588 break;
589 t3 = hullr.Indices[i + 2];
590 if (t3 > nverts)
591 break;
592 f = new Face(vertsoffset + t1, vertsoffset + t2, vertsoffset + t3);
593 faces.Add(f);
594 }
595 vertsoffset += nverts;
596 vs.Clear();
597 }
598 }
599 if (coords.Count > 0 && faces.Count > 0)
600 return true;
601 }
602
603 vs.Clear();
604
605 if (cmap.ContainsKey("BoundingVerts"))
606 {
607 data = cmap["BoundingVerts"].AsBinary();
608
609 for (i = 0; i < data.Length; )
610 {
611 t1 = data[i++];
612 t1 += data[i++] << 8;
613 t2 = data[i++];
614 t2 += data[i++] << 8;
615 t3 = data[i++];
616 t3 += data[i++] << 8;
617
618 f3 = new float3((t1 * range.X + min.X) * size.X,
619 (t2 * range.Y + min.Y) * size.Y,
620 (t3 * range.Z + min.Z) * size.Z);
621 vs.Add(f3);
622 }
623
624 if (vs.Count < 3)
625 {
626 vs.Clear();
627 return false;
628 }
629
630 if (vs.Count < 5)
631 {
632 foreach (float3 point in vs)
633 {
634 c.X = point.x;
635 c.Y = point.y;
636 c.Z = point.z;
637 coords.Add(c);
638 }
639 f = new Face(0, 1, 2);
640 faces.Add(f);
641
642 if (vs.Count == 4)
643 {
644 f = new Face(0, 2, 3);
645 faces.Add(f);
646 f = new Face(0, 3, 1);
647 faces.Add(f);
648 f = new Face( 3, 2, 1);
649 faces.Add(f);
650 }
651 vs.Clear();
652 return true;
653 }
654
655 if (!HullUtils.ComputeHull(vs, ref hullr, 0, 0.0f))
656 return false;
657
658 nverts = hullr.Vertices.Count;
659 nindexs = hullr.Indices.Count;
660
661 if (nindexs % 3 != 0)
662 return false;
663
664 for (i = 0; i < nverts; i++)
665 {
666 c.X = hullr.Vertices[i].x;
667 c.Y = hullr.Vertices[i].y;
668 c.Z = hullr.Vertices[i].z;
669 coords.Add(c);
670 }
671 for (i = 0; i < nindexs; i += 3)
672 {
673 t1 = hullr.Indices[i];
674 if (t1 > nverts)
675 break;
676 t2 = hullr.Indices[i + 1];
677 if (t2 > nverts)
678 break;
679 t3 = hullr.Indices[i + 2];
680 if (t3 > nverts)
681 break;
682 f = new Face(t1, t2, t3);
683 faces.Add(f);
684 }
685
686 if (coords.Count > 0 && faces.Count > 0)
687 return true;
688 }
689 else
690 return false;
691 }
692 }
693
694 return true;
695 }
696
697 /// <summary>
698 /// Generate the co-ords and faces necessary to construct a mesh from the sculpt data the accompanies a prim.
699 /// </summary>
700 /// <param name="primName"></param>
701 /// <param name="primShape"></param>
702 /// <param name="size"></param>
703 /// <param name="lod"></param>
704 /// <param name="coords">Coords are added to this list by the method.</param>
705 /// <param name="faces">Faces are added to this list by the method.</param>
706 /// <returns>true if coords and faces were successfully generated, false if not</returns>
707 private bool GenerateCoordsAndFacesFromPrimSculptData(
708 string primName, PrimitiveBaseShape primShape, Vector3 size, float lod, out List<Coord> coords, out List<Face> faces)
709 {
710 coords = new List<Coord>();
711 faces = new List<Face>();
712 PrimMesher.SculptMesh sculptMesh;
713 Image idata = null;
714 string decodedSculptFileName = "";
715
716 if (cacheSculptMaps && primShape.SculptTexture != UUID.Zero)
717 {
718 decodedSculptFileName = System.IO.Path.Combine(decodedSculptMapPath, "smap_" + primShape.SculptTexture.ToString());
719 try
720 {
721 if (File.Exists(decodedSculptFileName))
722 {
723 idata = Image.FromFile(decodedSculptFileName);
724 }
725 }
726 catch (Exception e)
727 {
728 m_log.Error("[SCULPT]: unable to load cached sculpt map " + decodedSculptFileName + " " + e.Message);
729
730 }
731 //if (idata != null)
732 // m_log.Debug("[SCULPT]: loaded cached map asset for map ID: " + primShape.SculptTexture.ToString());
733 }
734
735 if (idata == null)
736 {
737 if (primShape.SculptData == null || primShape.SculptData.Length == 0)
738 return false;
739
740 try
741 {
742 OpenMetaverse.Imaging.ManagedImage unusedData;
743 OpenMetaverse.Imaging.OpenJPEG.DecodeToImage(primShape.SculptData, out unusedData, out idata);
744
745 if (idata == null)
746 {
747 // In some cases it seems that the decode can return a null bitmap without throwing
748 // an exception
749 m_log.WarnFormat("[PHYSICS]: OpenJPEG decoded sculpt data for {0} to a null bitmap. Ignoring.", primName);
750
751 return false;
752 }
753
754 unusedData = null;
755
756 //idata = CSJ2K.J2kImage.FromBytes(primShape.SculptData);
757
758 if (cacheSculptMaps && (cacheSculptAlphaMaps || (((ImageFlags)(idata.Flags) & ImageFlags.HasAlpha) ==0)))
759 // don't cache images with alpha channel in linux since mono can't load them correctly)
760 {
761 try { idata.Save(decodedSculptFileName, ImageFormat.MemoryBmp); }
762 catch (Exception e) { m_log.Error("[SCULPT]: unable to cache sculpt map " + decodedSculptFileName + " " + e.Message); }
763 }
764 }
765 catch (DllNotFoundException)
766 {
767 m_log.Error("[PHYSICS]: OpenJpeg is not installed correctly on this system. Physics Proxy generation failed. Often times this is because of an old version of GLIBC. You must have version 2.4 or above!");
768 return false;
769 }
770 catch (IndexOutOfRangeException)
771 {
772 m_log.Error("[PHYSICS]: OpenJpeg was unable to decode this. Physics Proxy generation failed");
773 return false;
774 }
775 catch (Exception ex)
776 {
777 m_log.Error("[PHYSICS]: Unable to generate a Sculpty physics proxy. Sculpty texture decode failed: " + ex.Message);
778 return false;
779 }
780 }
781
782 PrimMesher.SculptMesh.SculptType sculptType;
783 switch ((OpenMetaverse.SculptType)primShape.SculptType)
784 {
785 case OpenMetaverse.SculptType.Cylinder:
786 sculptType = PrimMesher.SculptMesh.SculptType.cylinder;
787 break;
788 case OpenMetaverse.SculptType.Plane:
789 sculptType = PrimMesher.SculptMesh.SculptType.plane;
790 break;
791 case OpenMetaverse.SculptType.Torus:
792 sculptType = PrimMesher.SculptMesh.SculptType.torus;
793 break;
794 case OpenMetaverse.SculptType.Sphere:
795 sculptType = PrimMesher.SculptMesh.SculptType.sphere;
796 break;
797 default:
798 sculptType = PrimMesher.SculptMesh.SculptType.plane;
799 break;
800 }
801
802 bool mirror = ((primShape.SculptType & 128) != 0);
803 bool invert = ((primShape.SculptType & 64) != 0);
804
805 sculptMesh = new PrimMesher.SculptMesh((Bitmap)idata, sculptType, (int)lod, false, mirror, invert);
806
807 idata.Dispose();
808
809 sculptMesh.DumpRaw(baseDir, primName, "primMesh");
810
811 sculptMesh.Scale(size.X, size.Y, size.Z);
812
813 coords = sculptMesh.coords;
814 faces = sculptMesh.faces;
815
816 return true;
817 }
818
819 /// <summary>
820 /// Generate the co-ords and faces necessary to construct a mesh from the shape data the accompanies a prim.
821 /// </summary>
822 /// <param name="primName"></param>
823 /// <param name="primShape"></param>
824 /// <param name="size"></param>
825 /// <param name="coords">Coords are added to this list by the method.</param>
826 /// <param name="faces">Faces are added to this list by the method.</param>
827 /// <returns>true if coords and faces were successfully generated, false if not</returns>
828 private bool GenerateCoordsAndFacesFromPrimShapeData(
829 string primName, PrimitiveBaseShape primShape, Vector3 size, float lod, out List<Coord> coords, out List<Face> faces)
830 {
831 PrimMesh primMesh;
832 coords = new List<Coord>();
833 faces = new List<Face>();
834
835 float pathShearX = primShape.PathShearX < 128 ? (float)primShape.PathShearX * 0.01f : (float)(primShape.PathShearX - 256) * 0.01f;
836 float pathShearY = primShape.PathShearY < 128 ? (float)primShape.PathShearY * 0.01f : (float)(primShape.PathShearY - 256) * 0.01f;
837 float pathBegin = (float)primShape.PathBegin * 2.0e-5f;
838 float pathEnd = 1.0f - (float)primShape.PathEnd * 2.0e-5f;
839 float pathScaleX = (float)(primShape.PathScaleX - 100) * 0.01f;
840 float pathScaleY = (float)(primShape.PathScaleY - 100) * 0.01f;
841
842 float profileBegin = (float)primShape.ProfileBegin * 2.0e-5f;
843 float profileEnd = 1.0f - (float)primShape.ProfileEnd * 2.0e-5f;
844 float profileHollow = (float)primShape.ProfileHollow * 2.0e-5f;
845 if (profileHollow > 0.95f)
846 profileHollow = 0.95f;
847
848 int sides = 4;
849 LevelOfDetail iLOD = (LevelOfDetail)lod;
850 if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.EquilateralTriangle)
851 sides = 3;
852 else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.Circle)
853 {
854 switch (iLOD)
855 {
856 case LevelOfDetail.High: sides = 24; break;
857 case LevelOfDetail.Medium: sides = 12; break;
858 case LevelOfDetail.Low: sides = 6; break;
859 case LevelOfDetail.VeryLow: sides = 3; break;
860 default: sides = 24; break;
861 }
862 }
863 else if ((primShape.ProfileCurve & 0x07) == (byte)ProfileShape.HalfCircle)
864 { // half circle, prim is a sphere
865 switch (iLOD)
866 {
867 case LevelOfDetail.High: sides = 24; break;
868 case LevelOfDetail.Medium: sides = 12; break;
869 case LevelOfDetail.Low: sides = 6; break;
870 case LevelOfDetail.VeryLow: sides = 3; break;
871 default: sides = 24; break;
872 }
873
874 profileBegin = 0.5f * profileBegin + 0.5f;
875 profileEnd = 0.5f * profileEnd + 0.5f;
876 }
877
878 int hollowSides = sides;
879 if (primShape.HollowShape == HollowShape.Circle)
880 {
881 switch (iLOD)
882 {
883 case LevelOfDetail.High: hollowSides = 24; break;
884 case LevelOfDetail.Medium: hollowSides = 12; break;
885 case LevelOfDetail.Low: hollowSides = 6; break;
886 case LevelOfDetail.VeryLow: hollowSides = 3; break;
887 default: hollowSides = 24; break;
888 }
889 }
890 else if (primShape.HollowShape == HollowShape.Square)
891 hollowSides = 4;
892 else if (primShape.HollowShape == HollowShape.Triangle)
893 hollowSides = 3;
894
895 primMesh = new PrimMesh(sides, profileBegin, profileEnd, profileHollow, hollowSides);
896
897 if (primMesh.errorMessage != null)
898 if (primMesh.errorMessage.Length > 0)
899 m_log.Error("[ERROR] " + primMesh.errorMessage);
900
901 primMesh.topShearX = pathShearX;
902 primMesh.topShearY = pathShearY;
903 primMesh.pathCutBegin = pathBegin;
904 primMesh.pathCutEnd = pathEnd;
905
906 if (primShape.PathCurve == (byte)Extrusion.Straight || primShape.PathCurve == (byte) Extrusion.Flexible)
907 {
908 primMesh.twistBegin = primShape.PathTwistBegin * 18 / 10;
909 primMesh.twistEnd = primShape.PathTwist * 18 / 10;
910 primMesh.taperX = pathScaleX;
911 primMesh.taperY = pathScaleY;
912
913 if (profileBegin < 0.0f || profileBegin >= profileEnd || profileEnd > 1.0f)
914 {
915 ReportPrimError("*** CORRUPT PRIM!! ***", primName, primMesh);
916 if (profileBegin < 0.0f) profileBegin = 0.0f;
917 if (profileEnd > 1.0f) profileEnd = 1.0f;
918 }
919#if SPAM
920 m_log.Debug("****** PrimMesh Parameters (Linear) ******\n" + primMesh.ParamsToDisplayString());
921#endif
922 try
923 {
924 primMesh.ExtrudeLinear();
925 }
926 catch (Exception ex)
927 {
928 ReportPrimError("Extrusion failure: exception: " + ex.ToString(), primName, primMesh);
929 return false;
930 }
931 }
932 else
933 {
934 primMesh.holeSizeX = (200 - primShape.PathScaleX) * 0.01f;
935 primMesh.holeSizeY = (200 - primShape.PathScaleY) * 0.01f;
936 primMesh.radius = 0.01f * primShape.PathRadiusOffset;
937 primMesh.revolutions = 1.0f + 0.015f * primShape.PathRevolutions;
938 primMesh.skew = 0.01f * primShape.PathSkew;
939 primMesh.twistBegin = primShape.PathTwistBegin * 36 / 10;
940 primMesh.twistEnd = primShape.PathTwist * 36 / 10;
941 primMesh.taperX = primShape.PathTaperX * 0.01f;
942 primMesh.taperY = primShape.PathTaperY * 0.01f;
943
944 if (profileBegin < 0.0f || profileBegin >= profileEnd || profileEnd > 1.0f)
945 {
946 ReportPrimError("*** CORRUPT PRIM!! ***", primName, primMesh);
947 if (profileBegin < 0.0f) profileBegin = 0.0f;
948 if (profileEnd > 1.0f) profileEnd = 1.0f;
949 }
950#if SPAM
951 m_log.Debug("****** PrimMesh Parameters (Circular) ******\n" + primMesh.ParamsToDisplayString());
952#endif
953 try
954 {
955 primMesh.ExtrudeCircular();
956 }
957 catch (Exception ex)
958 {
959 ReportPrimError("Extrusion failure: exception: " + ex.ToString(), primName, primMesh);
960 return false;
961 }
962 }
963
964 primMesh.DumpRaw(baseDir, primName, "primMesh");
965
966 primMesh.Scale(size.X, size.Y, size.Z);
967
968 coords = primMesh.coords;
969 faces = primMesh.faces;
970
971 return true;
972 }
973
974 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
975 {
976 return CreateMesh(primName, primShape, size, lod, false,false);
977 }
978
979 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical)
980 {
981 return CreateMesh(primName, primShape, size, lod, false,false);
982 }
983
984 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool convex)
985 {
986#if SPAM
987 m_log.DebugFormat("[MESH]: Creating mesh for {0}", primName);
988#endif
989
990 Mesh mesh = null;
991 ulong key = 0;
992
993 // If this mesh has been created already, return it instead of creating another copy
994 // For large regions with 100k+ prims and hundreds of copies of each, this can save a GB or more of memory
995 key = primShape.GetMeshKey(size, lod, convex);
996 if (m_uniqueMeshes.TryGetValue(key, out mesh))
997 return mesh;
998
999 if (size.X < 0.01f) size.X = 0.01f;
1000 if (size.Y < 0.01f) size.Y = 0.01f;
1001 if (size.Z < 0.01f) size.Z = 0.01f;
1002
1003 mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod,convex);
1004
1005 if (mesh != null)
1006 {
1007 if ((!isPhysical) && size.X < minSizeForComplexMesh && size.Y < minSizeForComplexMesh && size.Z < minSizeForComplexMesh)
1008 {
1009#if SPAM
1010 m_log.Debug("Meshmerizer: prim " + primName + " has a size of " + size.ToString() + " which is below threshold of " +
1011 minSizeForComplexMesh.ToString() + " - creating simple bounding box");
1012#endif
1013 mesh = CreateBoundingBoxMesh(mesh);
1014 mesh.DumpRaw(baseDir, primName, "Z extruded");
1015 }
1016
1017 // trim the vertex and triangle lists to free up memory
1018 mesh.TrimExcess();
1019
1020 m_uniqueMeshes.Add(key, mesh);
1021 }
1022
1023 return mesh;
1024 }
1025 }
1026}
diff --git a/OpenSim/Region/Physics/UbitMeshing/PrimMesher.cs b/OpenSim/Region/Physics/UbitMeshing/PrimMesher.cs
new file mode 100644
index 0000000..53022ad
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/PrimMesher.cs
@@ -0,0 +1,2284 @@
1/*
2 * Copyright (c) Contributors
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28using System;
29using System.Collections.Generic;
30using System.Text;
31using System.IO;
32
33namespace PrimMesher
34{
35 public struct Quat
36 {
37 /// <summary>X value</summary>
38 public float X;
39 /// <summary>Y value</summary>
40 public float Y;
41 /// <summary>Z value</summary>
42 public float Z;
43 /// <summary>W value</summary>
44 public float W;
45
46 public Quat(float x, float y, float z, float w)
47 {
48 X = x;
49 Y = y;
50 Z = z;
51 W = w;
52 }
53
54 public Quat(Coord axis, float angle)
55 {
56 axis = axis.Normalize();
57
58 angle *= 0.5f;
59 float c = (float)Math.Cos(angle);
60 float s = (float)Math.Sin(angle);
61
62 X = axis.X * s;
63 Y = axis.Y * s;
64 Z = axis.Z * s;
65 W = c;
66
67 Normalize();
68 }
69
70 public float Length()
71 {
72 return (float)Math.Sqrt(X * X + Y * Y + Z * Z + W * W);
73 }
74
75 public Quat Normalize()
76 {
77 const float MAG_THRESHOLD = 0.0000001f;
78 float mag = Length();
79
80 // Catch very small rounding errors when normalizing
81 if (mag > MAG_THRESHOLD)
82 {
83 float oomag = 1f / mag;
84 X *= oomag;
85 Y *= oomag;
86 Z *= oomag;
87 W *= oomag;
88 }
89 else
90 {
91 X = 0f;
92 Y = 0f;
93 Z = 0f;
94 W = 1f;
95 }
96
97 return this;
98 }
99
100 public static Quat operator *(Quat q1, Quat q2)
101 {
102 float x = q1.W * q2.X + q1.X * q2.W + q1.Y * q2.Z - q1.Z * q2.Y;
103 float y = q1.W * q2.Y - q1.X * q2.Z + q1.Y * q2.W + q1.Z * q2.X;
104 float z = q1.W * q2.Z + q1.X * q2.Y - q1.Y * q2.X + q1.Z * q2.W;
105 float w = q1.W * q2.W - q1.X * q2.X - q1.Y * q2.Y - q1.Z * q2.Z;
106 return new Quat(x, y, z, w);
107 }
108
109 public override string ToString()
110 {
111 return "< X: " + this.X.ToString() + ", Y: " + this.Y.ToString() + ", Z: " + this.Z.ToString() + ", W: " + this.W.ToString() + ">";
112 }
113 }
114
115 public struct Coord
116 {
117 public float X;
118 public float Y;
119 public float Z;
120
121 public Coord(float x, float y, float z)
122 {
123 this.X = x;
124 this.Y = y;
125 this.Z = z;
126 }
127
128 public float Length()
129 {
130 return (float)Math.Sqrt(this.X * this.X + this.Y * this.Y + this.Z * this.Z);
131 }
132
133 public Coord Invert()
134 {
135 this.X = -this.X;
136 this.Y = -this.Y;
137 this.Z = -this.Z;
138
139 return this;
140 }
141
142 public Coord Normalize()
143 {
144 const float MAG_THRESHOLD = 0.0000001f;
145 float mag = Length();
146
147 // Catch very small rounding errors when normalizing
148 if (mag > MAG_THRESHOLD)
149 {
150 float oomag = 1.0f / mag;
151 this.X *= oomag;
152 this.Y *= oomag;
153 this.Z *= oomag;
154 }
155 else
156 {
157 this.X = 0.0f;
158 this.Y = 0.0f;
159 this.Z = 0.0f;
160 }
161
162 return this;
163 }
164
165 public override string ToString()
166 {
167 return this.X.ToString() + " " + this.Y.ToString() + " " + this.Z.ToString();
168 }
169
170 public static Coord Cross(Coord c1, Coord c2)
171 {
172 return new Coord(
173 c1.Y * c2.Z - c2.Y * c1.Z,
174 c1.Z * c2.X - c2.Z * c1.X,
175 c1.X * c2.Y - c2.X * c1.Y
176 );
177 }
178
179 public static Coord operator +(Coord v, Coord a)
180 {
181 return new Coord(v.X + a.X, v.Y + a.Y, v.Z + a.Z);
182 }
183
184 public static Coord operator *(Coord v, Coord m)
185 {
186 return new Coord(v.X * m.X, v.Y * m.Y, v.Z * m.Z);
187 }
188
189 public static Coord operator *(Coord v, Quat q)
190 {
191 // From http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/transforms/
192
193 Coord c2 = new Coord(0.0f, 0.0f, 0.0f);
194
195 c2.X = q.W * q.W * v.X +
196 2f * q.Y * q.W * v.Z -
197 2f * q.Z * q.W * v.Y +
198 q.X * q.X * v.X +
199 2f * q.Y * q.X * v.Y +
200 2f * q.Z * q.X * v.Z -
201 q.Z * q.Z * v.X -
202 q.Y * q.Y * v.X;
203
204 c2.Y =
205 2f * q.X * q.Y * v.X +
206 q.Y * q.Y * v.Y +
207 2f * q.Z * q.Y * v.Z +
208 2f * q.W * q.Z * v.X -
209 q.Z * q.Z * v.Y +
210 q.W * q.W * v.Y -
211 2f * q.X * q.W * v.Z -
212 q.X * q.X * v.Y;
213
214 c2.Z =
215 2f * q.X * q.Z * v.X +
216 2f * q.Y * q.Z * v.Y +
217 q.Z * q.Z * v.Z -
218 2f * q.W * q.Y * v.X -
219 q.Y * q.Y * v.Z +
220 2f * q.W * q.X * v.Y -
221 q.X * q.X * v.Z +
222 q.W * q.W * v.Z;
223
224 return c2;
225 }
226 }
227
228 public struct UVCoord
229 {
230 public float U;
231 public float V;
232
233
234 public UVCoord(float u, float v)
235 {
236 this.U = u;
237 this.V = v;
238 }
239 }
240
241 public struct Face
242 {
243 public int primFace;
244
245 // vertices
246 public int v1;
247 public int v2;
248 public int v3;
249
250 //normals
251 public int n1;
252 public int n2;
253 public int n3;
254
255 // uvs
256 public int uv1;
257 public int uv2;
258 public int uv3;
259
260 public Face(int v1, int v2, int v3)
261 {
262 primFace = 0;
263
264 this.v1 = v1;
265 this.v2 = v2;
266 this.v3 = v3;
267
268 this.n1 = 0;
269 this.n2 = 0;
270 this.n3 = 0;
271
272 this.uv1 = 0;
273 this.uv2 = 0;
274 this.uv3 = 0;
275
276 }
277
278 public Face(int v1, int v2, int v3, int n1, int n2, int n3)
279 {
280 primFace = 0;
281
282 this.v1 = v1;
283 this.v2 = v2;
284 this.v3 = v3;
285
286 this.n1 = n1;
287 this.n2 = n2;
288 this.n3 = n3;
289
290 this.uv1 = 0;
291 this.uv2 = 0;
292 this.uv3 = 0;
293 }
294
295 public Coord SurfaceNormal(List<Coord> coordList)
296 {
297 Coord c1 = coordList[this.v1];
298 Coord c2 = coordList[this.v2];
299 Coord c3 = coordList[this.v3];
300
301 Coord edge1 = new Coord(c2.X - c1.X, c2.Y - c1.Y, c2.Z - c1.Z);
302 Coord edge2 = new Coord(c3.X - c1.X, c3.Y - c1.Y, c3.Z - c1.Z);
303
304 return Coord.Cross(edge1, edge2).Normalize();
305 }
306 }
307
308 public struct ViewerFace
309 {
310 public int primFaceNumber;
311
312 public Coord v1;
313 public Coord v2;
314 public Coord v3;
315
316 public int coordIndex1;
317 public int coordIndex2;
318 public int coordIndex3;
319
320 public Coord n1;
321 public Coord n2;
322 public Coord n3;
323
324 public UVCoord uv1;
325 public UVCoord uv2;
326 public UVCoord uv3;
327
328 public ViewerFace(int primFaceNumber)
329 {
330 this.primFaceNumber = primFaceNumber;
331
332 this.v1 = new Coord();
333 this.v2 = new Coord();
334 this.v3 = new Coord();
335
336 this.coordIndex1 = this.coordIndex2 = this.coordIndex3 = -1; // -1 means not assigned yet
337
338 this.n1 = new Coord();
339 this.n2 = new Coord();
340 this.n3 = new Coord();
341
342 this.uv1 = new UVCoord();
343 this.uv2 = new UVCoord();
344 this.uv3 = new UVCoord();
345 }
346
347 public void Scale(float x, float y, float z)
348 {
349 this.v1.X *= x;
350 this.v1.Y *= y;
351 this.v1.Z *= z;
352
353 this.v2.X *= x;
354 this.v2.Y *= y;
355 this.v2.Z *= z;
356
357 this.v3.X *= x;
358 this.v3.Y *= y;
359 this.v3.Z *= z;
360 }
361
362 public void AddPos(float x, float y, float z)
363 {
364 this.v1.X += x;
365 this.v2.X += x;
366 this.v3.X += x;
367
368 this.v1.Y += y;
369 this.v2.Y += y;
370 this.v3.Y += y;
371
372 this.v1.Z += z;
373 this.v2.Z += z;
374 this.v3.Z += z;
375 }
376
377 public void AddRot(Quat q)
378 {
379 this.v1 *= q;
380 this.v2 *= q;
381 this.v3 *= q;
382
383 this.n1 *= q;
384 this.n2 *= q;
385 this.n3 *= q;
386 }
387
388 public void CalcSurfaceNormal()
389 {
390
391 Coord edge1 = new Coord(this.v2.X - this.v1.X, this.v2.Y - this.v1.Y, this.v2.Z - this.v1.Z);
392 Coord edge2 = new Coord(this.v3.X - this.v1.X, this.v3.Y - this.v1.Y, this.v3.Z - this.v1.Z);
393
394 this.n1 = this.n2 = this.n3 = Coord.Cross(edge1, edge2).Normalize();
395 }
396 }
397
398 internal struct Angle
399 {
400 internal float angle;
401 internal float X;
402 internal float Y;
403
404 internal Angle(float angle, float x, float y)
405 {
406 this.angle = angle;
407 this.X = x;
408 this.Y = y;
409 }
410 }
411
412 internal class AngleList
413 {
414 private float iX, iY; // intersection point
415
416 private static Angle[] angles3 =
417 {
418 new Angle(0.0f, 1.0f, 0.0f),
419 new Angle(0.33333333333333333f, -0.5f, 0.86602540378443871f),
420 new Angle(0.66666666666666667f, -0.5f, -0.86602540378443837f),
421 new Angle(1.0f, 1.0f, 0.0f)
422 };
423
424 private static Coord[] normals3 =
425 {
426 new Coord(0.25f, 0.4330127019f, 0.0f).Normalize(),
427 new Coord(-0.5f, 0.0f, 0.0f).Normalize(),
428 new Coord(0.25f, -0.4330127019f, 0.0f).Normalize(),
429 new Coord(0.25f, 0.4330127019f, 0.0f).Normalize()
430 };
431
432 private static Angle[] angles4 =
433 {
434 new Angle(0.0f, 1.0f, 0.0f),
435 new Angle(0.25f, 0.0f, 1.0f),
436 new Angle(0.5f, -1.0f, 0.0f),
437 new Angle(0.75f, 0.0f, -1.0f),
438 new Angle(1.0f, 1.0f, 0.0f)
439 };
440
441 private static Coord[] normals4 =
442 {
443 new Coord(0.5f, 0.5f, 0.0f).Normalize(),
444 new Coord(-0.5f, 0.5f, 0.0f).Normalize(),
445 new Coord(-0.5f, -0.5f, 0.0f).Normalize(),
446 new Coord(0.5f, -0.5f, 0.0f).Normalize(),
447 new Coord(0.5f, 0.5f, 0.0f).Normalize()
448 };
449
450 private static Angle[] angles24 =
451 {
452 new Angle(0.0f, 1.0f, 0.0f),
453 new Angle(0.041666666666666664f, 0.96592582628906831f, 0.25881904510252074f),
454 new Angle(0.083333333333333329f, 0.86602540378443871f, 0.5f),
455 new Angle(0.125f, 0.70710678118654757f, 0.70710678118654746f),
456 new Angle(0.16666666666666667f, 0.5f, 0.8660254037844386f),
457 new Angle(0.20833333333333331f, 0.25881904510252096f, 0.9659258262890682f),
458 new Angle(0.25f, 0.0f, 1.0f),
459 new Angle(0.29166666666666663f, -0.25881904510252063f, 0.96592582628906831f),
460 new Angle(0.33333333333333333f, -0.5f, 0.86602540378443871f),
461 new Angle(0.375f, -0.70710678118654746f, 0.70710678118654757f),
462 new Angle(0.41666666666666663f, -0.86602540378443849f, 0.5f),
463 new Angle(0.45833333333333331f, -0.9659258262890682f, 0.25881904510252102f),
464 new Angle(0.5f, -1.0f, 0.0f),
465 new Angle(0.54166666666666663f, -0.96592582628906842f, -0.25881904510252035f),
466 new Angle(0.58333333333333326f, -0.86602540378443882f, -0.5f),
467 new Angle(0.62499999999999989f, -0.70710678118654791f, -0.70710678118654713f),
468 new Angle(0.66666666666666667f, -0.5f, -0.86602540378443837f),
469 new Angle(0.70833333333333326f, -0.25881904510252152f, -0.96592582628906809f),
470 new Angle(0.75f, 0.0f, -1.0f),
471 new Angle(0.79166666666666663f, 0.2588190451025203f, -0.96592582628906842f),
472 new Angle(0.83333333333333326f, 0.5f, -0.86602540378443904f),
473 new Angle(0.875f, 0.70710678118654735f, -0.70710678118654768f),
474 new Angle(0.91666666666666663f, 0.86602540378443837f, -0.5f),
475 new Angle(0.95833333333333326f, 0.96592582628906809f, -0.25881904510252157f),
476 new Angle(1.0f, 1.0f, 0.0f)
477 };
478
479 private Angle interpolatePoints(float newPoint, Angle p1, Angle p2)
480 {
481 float m = (newPoint - p1.angle) / (p2.angle - p1.angle);
482 return new Angle(newPoint, p1.X + m * (p2.X - p1.X), p1.Y + m * (p2.Y - p1.Y));
483 }
484
485 private void intersection(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
486 { // ref: http://local.wasp.uwa.edu.au/~pbourke/geometry/lineline2d/
487 double denom = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
488 double uaNumerator = (x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3);
489
490 if (denom != 0.0)
491 {
492 double ua = uaNumerator / denom;
493 iX = (float)(x1 + ua * (x2 - x1));
494 iY = (float)(y1 + ua * (y2 - y1));
495 }
496 }
497
498 internal List<Angle> angles;
499 internal List<Coord> normals;
500
501 internal void makeAngles(int sides, float startAngle, float stopAngle)
502 {
503 angles = new List<Angle>();
504 normals = new List<Coord>();
505
506 double twoPi = System.Math.PI * 2.0;
507 float twoPiInv = 1.0f / (float)twoPi;
508
509 if (sides < 1)
510 throw new Exception("number of sides not greater than zero");
511 if (stopAngle <= startAngle)
512 throw new Exception("stopAngle not greater than startAngle");
513
514 if ((sides == 3 || sides == 4 || sides == 24))
515 {
516 startAngle *= twoPiInv;
517 stopAngle *= twoPiInv;
518
519 Angle[] sourceAngles;
520 if (sides == 3)
521 sourceAngles = angles3;
522 else if (sides == 4)
523 sourceAngles = angles4;
524 else sourceAngles = angles24;
525
526 int startAngleIndex = (int)(startAngle * sides);
527 int endAngleIndex = sourceAngles.Length - 1;
528 if (stopAngle < 1.0f)
529 endAngleIndex = (int)(stopAngle * sides) + 1;
530 if (endAngleIndex == startAngleIndex)
531 endAngleIndex++;
532
533 for (int angleIndex = startAngleIndex; angleIndex < endAngleIndex + 1; angleIndex++)
534 {
535 angles.Add(sourceAngles[angleIndex]);
536 if (sides == 3)
537 normals.Add(normals3[angleIndex]);
538 else if (sides == 4)
539 normals.Add(normals4[angleIndex]);
540 }
541
542 if (startAngle > 0.0f)
543 angles[0] = interpolatePoints(startAngle, angles[0], angles[1]);
544
545 if (stopAngle < 1.0f)
546 {
547 int lastAngleIndex = angles.Count - 1;
548 angles[lastAngleIndex] = interpolatePoints(stopAngle, angles[lastAngleIndex - 1], angles[lastAngleIndex]);
549 }
550 }
551 else
552 {
553 double stepSize = twoPi / sides;
554
555 int startStep = (int)(startAngle / stepSize);
556 double angle = stepSize * startStep;
557 int step = startStep;
558 double stopAngleTest = stopAngle;
559 if (stopAngle < twoPi)
560 {
561 stopAngleTest = stepSize * ((int)(stopAngle / stepSize) + 1);
562 if (stopAngleTest < stopAngle)
563 stopAngleTest += stepSize;
564 if (stopAngleTest > twoPi)
565 stopAngleTest = twoPi;
566 }
567
568 while (angle <= stopAngleTest)
569 {
570 Angle newAngle;
571 newAngle.angle = (float)angle;
572 newAngle.X = (float)System.Math.Cos(angle);
573 newAngle.Y = (float)System.Math.Sin(angle);
574 angles.Add(newAngle);
575 step += 1;
576 angle = stepSize * step;
577 }
578
579 if (startAngle > angles[0].angle)
580 {
581 Angle newAngle;
582 intersection(angles[0].X, angles[0].Y, angles[1].X, angles[1].Y, 0.0f, 0.0f, (float)Math.Cos(startAngle), (float)Math.Sin(startAngle));
583 newAngle.angle = startAngle;
584 newAngle.X = iX;
585 newAngle.Y = iY;
586 angles[0] = newAngle;
587 }
588
589 int index = angles.Count - 1;
590 if (stopAngle < angles[index].angle)
591 {
592 Angle newAngle;
593 intersection(angles[index - 1].X, angles[index - 1].Y, angles[index].X, angles[index].Y, 0.0f, 0.0f, (float)Math.Cos(stopAngle), (float)Math.Sin(stopAngle));
594 newAngle.angle = stopAngle;
595 newAngle.X = iX;
596 newAngle.Y = iY;
597 angles[index] = newAngle;
598 }
599 }
600 }
601 }
602
603 /// <summary>
604 /// generates a profile for extrusion
605 /// </summary>
606 internal class Profile
607 {
608 private const float twoPi = 2.0f * (float)Math.PI;
609
610 internal string errorMessage = null;
611
612 internal List<Coord> coords;
613 internal List<Face> faces;
614 internal List<Coord> vertexNormals;
615 internal List<float> us;
616 internal List<UVCoord> faceUVs;
617 internal List<int> faceNumbers;
618
619 // use these for making individual meshes for each prim face
620 internal List<int> outerCoordIndices = null;
621 internal List<int> hollowCoordIndices = null;
622 internal List<int> cut1CoordIndices = null;
623 internal List<int> cut2CoordIndices = null;
624
625 internal Coord faceNormal = new Coord(0.0f, 0.0f, 1.0f);
626 internal Coord cutNormal1 = new Coord();
627 internal Coord cutNormal2 = new Coord();
628
629 internal int numOuterVerts = 0;
630 internal int numHollowVerts = 0;
631
632 internal int outerFaceNumber = -1;
633 internal int hollowFaceNumber = -1;
634
635 internal bool calcVertexNormals = false;
636 internal int bottomFaceNumber = 0;
637 internal int numPrimFaces = 0;
638
639 internal Profile()
640 {
641 this.coords = new List<Coord>();
642 this.faces = new List<Face>();
643 this.vertexNormals = new List<Coord>();
644 this.us = new List<float>();
645 this.faceUVs = new List<UVCoord>();
646 this.faceNumbers = new List<int>();
647 }
648
649 internal Profile(int sides, float profileStart, float profileEnd, float hollow, int hollowSides, bool createFaces, bool calcVertexNormals)
650 {
651 this.calcVertexNormals = calcVertexNormals;
652 this.coords = new List<Coord>();
653 this.faces = new List<Face>();
654 this.vertexNormals = new List<Coord>();
655 this.us = new List<float>();
656 this.faceUVs = new List<UVCoord>();
657 this.faceNumbers = new List<int>();
658
659 Coord center = new Coord(0.0f, 0.0f, 0.0f);
660 //bool hasCenter = false;
661
662 List<Coord> hollowCoords = new List<Coord>();
663 List<Coord> hollowNormals = new List<Coord>();
664 List<float> hollowUs = new List<float>();
665
666 if (calcVertexNormals)
667 {
668 this.outerCoordIndices = new List<int>();
669 this.hollowCoordIndices = new List<int>();
670 this.cut1CoordIndices = new List<int>();
671 this.cut2CoordIndices = new List<int>();
672 }
673
674 bool hasHollow = (hollow > 0.0f);
675
676 bool hasProfileCut = (profileStart > 0.0f || profileEnd < 1.0f);
677
678 AngleList angles = new AngleList();
679 AngleList hollowAngles = new AngleList();
680
681 float xScale = 0.5f;
682 float yScale = 0.5f;
683 if (sides == 4) // corners of a square are sqrt(2) from center
684 {
685 xScale = 0.707f;
686 yScale = 0.707f;
687 }
688
689 float startAngle = profileStart * twoPi;
690 float stopAngle = profileEnd * twoPi;
691
692 try { angles.makeAngles(sides, startAngle, stopAngle); }
693 catch (Exception ex)
694 {
695
696 errorMessage = "makeAngles failed: Exception: " + ex.ToString()
697 + "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString();
698
699 return;
700 }
701
702 this.numOuterVerts = angles.angles.Count;
703
704 // flag to create as few triangles as possible for 3 or 4 side profile
705 bool simpleFace = (sides < 5 && !hasHollow && !hasProfileCut);
706
707 if (hasHollow)
708 {
709 if (sides == hollowSides)
710 hollowAngles = angles;
711 else
712 {
713 try { hollowAngles.makeAngles(hollowSides, startAngle, stopAngle); }
714 catch (Exception ex)
715 {
716 errorMessage = "makeAngles failed: Exception: " + ex.ToString()
717 + "\nsides: " + sides.ToString() + " startAngle: " + startAngle.ToString() + " stopAngle: " + stopAngle.ToString();
718
719 return;
720 }
721 }
722 this.numHollowVerts = hollowAngles.angles.Count;
723 }
724 else if (!simpleFace)
725 {
726 this.coords.Add(center);
727 //hasCenter = true;
728 if (this.calcVertexNormals)
729 this.vertexNormals.Add(new Coord(0.0f, 0.0f, 1.0f));
730 this.us.Add(0.0f);
731 }
732
733 float z = 0.0f;
734
735 Angle angle;
736 Coord newVert = new Coord();
737 if (hasHollow && hollowSides != sides)
738 {
739 int numHollowAngles = hollowAngles.angles.Count;
740 for (int i = 0; i < numHollowAngles; i++)
741 {
742 angle = hollowAngles.angles[i];
743 newVert.X = hollow * xScale * angle.X;
744 newVert.Y = hollow * yScale * angle.Y;
745 newVert.Z = z;
746
747 hollowCoords.Add(newVert);
748 if (this.calcVertexNormals)
749 {
750 if (hollowSides < 5)
751 hollowNormals.Add(hollowAngles.normals[i].Invert());
752 else
753 hollowNormals.Add(new Coord(-angle.X, -angle.Y, 0.0f));
754
755 hollowUs.Add(angle.angle * hollow);
756 }
757 }
758 }
759
760 int index = 0;
761 int numAngles = angles.angles.Count;
762
763 for (int i = 0; i < numAngles; i++)
764 {
765 angle = angles.angles[i];
766 newVert.X = angle.X * xScale;
767 newVert.Y = angle.Y * yScale;
768 newVert.Z = z;
769 this.coords.Add(newVert);
770 if (this.calcVertexNormals)
771 {
772 this.outerCoordIndices.Add(this.coords.Count - 1);
773
774 if (sides < 5)
775 {
776 this.vertexNormals.Add(angles.normals[i]);
777 float u = angle.angle;
778 this.us.Add(u);
779 }
780 else
781 {
782 this.vertexNormals.Add(new Coord(angle.X, angle.Y, 0.0f));
783 this.us.Add(angle.angle);
784 }
785 }
786
787 if (hasHollow)
788 {
789 if (hollowSides == sides)
790 {
791 newVert.X *= hollow;
792 newVert.Y *= hollow;
793 newVert.Z = z;
794 hollowCoords.Add(newVert);
795 if (this.calcVertexNormals)
796 {
797 if (sides < 5)
798 {
799 hollowNormals.Add(angles.normals[i].Invert());
800 }
801
802 else
803 hollowNormals.Add(new Coord(-angle.X, -angle.Y, 0.0f));
804
805 hollowUs.Add(angle.angle * hollow);
806 }
807 }
808 }
809 else if (!simpleFace && createFaces && angle.angle > 0.0001f)
810 {
811 Face newFace = new Face();
812 newFace.v1 = 0;
813 newFace.v2 = index;
814 newFace.v3 = index + 1;
815
816 this.faces.Add(newFace);
817 }
818 index += 1;
819 }
820
821 if (hasHollow)
822 {
823 hollowCoords.Reverse();
824 if (this.calcVertexNormals)
825 {
826 hollowNormals.Reverse();
827 hollowUs.Reverse();
828 }
829
830 if (createFaces)
831 {
832 //int numOuterVerts = this.coords.Count;
833 //numOuterVerts = this.coords.Count;
834 //int numHollowVerts = hollowCoords.Count;
835 int numTotalVerts = this.numOuterVerts + this.numHollowVerts;
836
837 if (this.numOuterVerts == this.numHollowVerts)
838 {
839 Face newFace = new Face();
840
841 for (int coordIndex = 0; coordIndex < this.numOuterVerts - 1; coordIndex++)
842 {
843 newFace.v1 = coordIndex;
844 newFace.v2 = coordIndex + 1;
845 newFace.v3 = numTotalVerts - coordIndex - 1;
846 this.faces.Add(newFace);
847
848 newFace.v1 = coordIndex + 1;
849 newFace.v2 = numTotalVerts - coordIndex - 2;
850 newFace.v3 = numTotalVerts - coordIndex - 1;
851 this.faces.Add(newFace);
852 }
853 }
854 else
855 {
856 if (this.numOuterVerts < this.numHollowVerts)
857 {
858 Face newFace = new Face();
859 int j = 0; // j is the index for outer vertices
860 int maxJ = this.numOuterVerts - 1;
861 for (int i = 0; i < this.numHollowVerts; i++) // i is the index for inner vertices
862 {
863 if (j < maxJ)
864 if (angles.angles[j + 1].angle - hollowAngles.angles[i].angle < hollowAngles.angles[i].angle - angles.angles[j].angle + 0.000001f)
865 {
866 newFace.v1 = numTotalVerts - i - 1;
867 newFace.v2 = j;
868 newFace.v3 = j + 1;
869
870 this.faces.Add(newFace);
871 j += 1;
872 }
873
874 newFace.v1 = j;
875 newFace.v2 = numTotalVerts - i - 2;
876 newFace.v3 = numTotalVerts - i - 1;
877
878 this.faces.Add(newFace);
879 }
880 }
881 else // numHollowVerts < numOuterVerts
882 {
883 Face newFace = new Face();
884 int j = 0; // j is the index for inner vertices
885 int maxJ = this.numHollowVerts - 1;
886 for (int i = 0; i < this.numOuterVerts; i++)
887 {
888 if (j < maxJ)
889 if (hollowAngles.angles[j + 1].angle - angles.angles[i].angle < angles.angles[i].angle - hollowAngles.angles[j].angle + 0.000001f)
890 {
891 newFace.v1 = i;
892 newFace.v2 = numTotalVerts - j - 2;
893 newFace.v3 = numTotalVerts - j - 1;
894
895 this.faces.Add(newFace);
896 j += 1;
897 }
898
899 newFace.v1 = numTotalVerts - j - 1;
900 newFace.v2 = i;
901 newFace.v3 = i + 1;
902
903 this.faces.Add(newFace);
904 }
905 }
906 }
907 }
908
909 if (calcVertexNormals)
910 {
911 foreach (Coord hc in hollowCoords)
912 {
913 this.coords.Add(hc);
914 hollowCoordIndices.Add(this.coords.Count - 1);
915 }
916 }
917 else
918 this.coords.AddRange(hollowCoords);
919
920 if (this.calcVertexNormals)
921 {
922 this.vertexNormals.AddRange(hollowNormals);
923 this.us.AddRange(hollowUs);
924
925 }
926 }
927
928 if (simpleFace && createFaces)
929 {
930 if (sides == 3)
931 this.faces.Add(new Face(0, 1, 2));
932 else if (sides == 4)
933 {
934 this.faces.Add(new Face(0, 1, 2));
935 this.faces.Add(new Face(0, 2, 3));
936 }
937 }
938
939 if (calcVertexNormals && hasProfileCut)
940 {
941 int lastOuterVertIndex = this.numOuterVerts - 1;
942
943 if (hasHollow)
944 {
945 this.cut1CoordIndices.Add(0);
946 this.cut1CoordIndices.Add(this.coords.Count - 1);
947
948 this.cut2CoordIndices.Add(lastOuterVertIndex + 1);
949 this.cut2CoordIndices.Add(lastOuterVertIndex);
950
951 this.cutNormal1.X = this.coords[0].Y - this.coords[this.coords.Count - 1].Y;
952 this.cutNormal1.Y = -(this.coords[0].X - this.coords[this.coords.Count - 1].X);
953
954 this.cutNormal2.X = this.coords[lastOuterVertIndex + 1].Y - this.coords[lastOuterVertIndex].Y;
955 this.cutNormal2.Y = -(this.coords[lastOuterVertIndex + 1].X - this.coords[lastOuterVertIndex].X);
956 }
957
958 else
959 {
960 this.cut1CoordIndices.Add(0);
961 this.cut1CoordIndices.Add(1);
962
963 this.cut2CoordIndices.Add(lastOuterVertIndex);
964 this.cut2CoordIndices.Add(0);
965
966 this.cutNormal1.X = this.vertexNormals[1].Y;
967 this.cutNormal1.Y = -this.vertexNormals[1].X;
968
969 this.cutNormal2.X = -this.vertexNormals[this.vertexNormals.Count - 2].Y;
970 this.cutNormal2.Y = this.vertexNormals[this.vertexNormals.Count - 2].X;
971
972 }
973 this.cutNormal1.Normalize();
974 this.cutNormal2.Normalize();
975 }
976
977 this.MakeFaceUVs();
978
979 hollowCoords = null;
980 hollowNormals = null;
981 hollowUs = null;
982
983 if (calcVertexNormals)
984 { // calculate prim face numbers
985
986 // face number order is top, outer, hollow, bottom, start cut, end cut
987 // I know it's ugly but so is the whole concept of prim face numbers
988
989 int faceNum = 1; // start with outer faces
990 this.outerFaceNumber = faceNum;
991
992 int startVert = hasProfileCut && !hasHollow ? 1 : 0;
993 if (startVert > 0)
994 this.faceNumbers.Add(-1);
995 for (int i = 0; i < this.numOuterVerts - 1; i++)
996 //this.faceNumbers.Add(sides < 5 ? faceNum++ : faceNum);
997 this.faceNumbers.Add(sides < 5 && i < sides ? faceNum++ : faceNum);
998
999 //if (!hasHollow && !hasProfileCut)
1000 // this.bottomFaceNumber = faceNum++;
1001
1002 this.faceNumbers.Add(hasProfileCut ? -1 : faceNum++);
1003
1004 if (sides > 4 && (hasHollow || hasProfileCut))
1005 faceNum++;
1006
1007 if (sides < 5 && (hasHollow || hasProfileCut) && this.numOuterVerts < sides)
1008 faceNum++;
1009
1010 if (hasHollow)
1011 {
1012 for (int i = 0; i < this.numHollowVerts; i++)
1013 this.faceNumbers.Add(faceNum);
1014
1015 this.hollowFaceNumber = faceNum++;
1016 }
1017 //if (hasProfileCut || hasHollow)
1018 // this.bottomFaceNumber = faceNum++;
1019 this.bottomFaceNumber = faceNum++;
1020
1021 if (hasHollow && hasProfileCut)
1022 this.faceNumbers.Add(faceNum++);
1023
1024 for (int i = 0; i < this.faceNumbers.Count; i++)
1025 if (this.faceNumbers[i] == -1)
1026 this.faceNumbers[i] = faceNum++;
1027
1028 this.numPrimFaces = faceNum;
1029 }
1030
1031 }
1032
1033 internal void MakeFaceUVs()
1034 {
1035 this.faceUVs = new List<UVCoord>();
1036 foreach (Coord c in this.coords)
1037 this.faceUVs.Add(new UVCoord(0.5f + c.X, 0.5f - c.Y));
1038 }
1039
1040 internal Profile Copy()
1041 {
1042 return this.Copy(true);
1043 }
1044
1045 internal Profile Copy(bool needFaces)
1046 {
1047 Profile copy = new Profile();
1048
1049 copy.coords.AddRange(this.coords);
1050 copy.faceUVs.AddRange(this.faceUVs);
1051
1052 if (needFaces)
1053 copy.faces.AddRange(this.faces);
1054 if ((copy.calcVertexNormals = this.calcVertexNormals) == true)
1055 {
1056 copy.vertexNormals.AddRange(this.vertexNormals);
1057 copy.faceNormal = this.faceNormal;
1058 copy.cutNormal1 = this.cutNormal1;
1059 copy.cutNormal2 = this.cutNormal2;
1060 copy.us.AddRange(this.us);
1061 copy.faceNumbers.AddRange(this.faceNumbers);
1062
1063 copy.cut1CoordIndices = new List<int>(this.cut1CoordIndices);
1064 copy.cut2CoordIndices = new List<int>(this.cut2CoordIndices);
1065 copy.hollowCoordIndices = new List<int>(this.hollowCoordIndices);
1066 copy.outerCoordIndices = new List<int>(this.outerCoordIndices);
1067 }
1068 copy.numOuterVerts = this.numOuterVerts;
1069 copy.numHollowVerts = this.numHollowVerts;
1070
1071 return copy;
1072 }
1073
1074 internal void AddPos(Coord v)
1075 {
1076 this.AddPos(v.X, v.Y, v.Z);
1077 }
1078
1079 internal void AddPos(float x, float y, float z)
1080 {
1081 int i;
1082 int numVerts = this.coords.Count;
1083 Coord vert;
1084
1085 for (i = 0; i < numVerts; i++)
1086 {
1087 vert = this.coords[i];
1088 vert.X += x;
1089 vert.Y += y;
1090 vert.Z += z;
1091 this.coords[i] = vert;
1092 }
1093 }
1094
1095 internal void AddRot(Quat q)
1096 {
1097 int i;
1098 int numVerts = this.coords.Count;
1099
1100 for (i = 0; i < numVerts; i++)
1101 this.coords[i] *= q;
1102
1103 if (this.calcVertexNormals)
1104 {
1105 int numNormals = this.vertexNormals.Count;
1106 for (i = 0; i < numNormals; i++)
1107 this.vertexNormals[i] *= q;
1108
1109 this.faceNormal *= q;
1110 this.cutNormal1 *= q;
1111 this.cutNormal2 *= q;
1112
1113 }
1114 }
1115
1116 internal void Scale(float x, float y)
1117 {
1118 int i;
1119 int numVerts = this.coords.Count;
1120 Coord vert;
1121
1122 for (i = 0; i < numVerts; i++)
1123 {
1124 vert = this.coords[i];
1125 vert.X *= x;
1126 vert.Y *= y;
1127 this.coords[i] = vert;
1128 }
1129 }
1130
1131 /// <summary>
1132 /// Changes order of the vertex indices and negates the center vertex normal. Does not alter vertex normals of radial vertices
1133 /// </summary>
1134 internal void FlipNormals()
1135 {
1136 int i;
1137 int numFaces = this.faces.Count;
1138 Face tmpFace;
1139 int tmp;
1140
1141 for (i = 0; i < numFaces; i++)
1142 {
1143 tmpFace = this.faces[i];
1144 tmp = tmpFace.v3;
1145 tmpFace.v3 = tmpFace.v1;
1146 tmpFace.v1 = tmp;
1147 this.faces[i] = tmpFace;
1148 }
1149
1150 if (this.calcVertexNormals)
1151 {
1152 int normalCount = this.vertexNormals.Count;
1153 if (normalCount > 0)
1154 {
1155 Coord n = this.vertexNormals[normalCount - 1];
1156 n.Z = -n.Z;
1157 this.vertexNormals[normalCount - 1] = n;
1158 }
1159 }
1160
1161 this.faceNormal.X = -this.faceNormal.X;
1162 this.faceNormal.Y = -this.faceNormal.Y;
1163 this.faceNormal.Z = -this.faceNormal.Z;
1164
1165 int numfaceUVs = this.faceUVs.Count;
1166 for (i = 0; i < numfaceUVs; i++)
1167 {
1168 UVCoord uv = this.faceUVs[i];
1169 uv.V = 1.0f - uv.V;
1170 this.faceUVs[i] = uv;
1171 }
1172 }
1173
1174 internal void AddValue2FaceVertexIndices(int num)
1175 {
1176 int numFaces = this.faces.Count;
1177 Face tmpFace;
1178 for (int i = 0; i < numFaces; i++)
1179 {
1180 tmpFace = this.faces[i];
1181 tmpFace.v1 += num;
1182 tmpFace.v2 += num;
1183 tmpFace.v3 += num;
1184
1185 this.faces[i] = tmpFace;
1186 }
1187 }
1188
1189 internal void AddValue2FaceNormalIndices(int num)
1190 {
1191 if (this.calcVertexNormals)
1192 {
1193 int numFaces = this.faces.Count;
1194 Face tmpFace;
1195 for (int i = 0; i < numFaces; i++)
1196 {
1197 tmpFace = this.faces[i];
1198 tmpFace.n1 += num;
1199 tmpFace.n2 += num;
1200 tmpFace.n3 += num;
1201
1202 this.faces[i] = tmpFace;
1203 }
1204 }
1205 }
1206
1207 internal void DumpRaw(String path, String name, String title)
1208 {
1209 if (path == null)
1210 return;
1211 String fileName = name + "_" + title + ".raw";
1212 String completePath = System.IO.Path.Combine(path, fileName);
1213 StreamWriter sw = new StreamWriter(completePath);
1214
1215 for (int i = 0; i < this.faces.Count; i++)
1216 {
1217 string s = this.coords[this.faces[i].v1].ToString();
1218 s += " " + this.coords[this.faces[i].v2].ToString();
1219 s += " " + this.coords[this.faces[i].v3].ToString();
1220
1221 sw.WriteLine(s);
1222 }
1223
1224 sw.Close();
1225 }
1226 }
1227
1228 public struct PathNode
1229 {
1230 public Coord position;
1231 public Quat rotation;
1232 public float xScale;
1233 public float yScale;
1234 public float percentOfPath;
1235 }
1236
1237 public enum PathType { Linear = 0, Circular = 1, Flexible = 2 }
1238
1239 public class Path
1240 {
1241 public List<PathNode> pathNodes = new List<PathNode>();
1242
1243 public float twistBegin = 0.0f;
1244 public float twistEnd = 0.0f;
1245 public float topShearX = 0.0f;
1246 public float topShearY = 0.0f;
1247 public float pathCutBegin = 0.0f;
1248 public float pathCutEnd = 1.0f;
1249 public float dimpleBegin = 0.0f;
1250 public float dimpleEnd = 1.0f;
1251 public float skew = 0.0f;
1252 public float holeSizeX = 1.0f; // called pathScaleX in pbs
1253 public float holeSizeY = 0.25f;
1254 public float taperX = 0.0f;
1255 public float taperY = 0.0f;
1256 public float radius = 0.0f;
1257 public float revolutions = 1.0f;
1258 public int stepsPerRevolution = 24;
1259
1260 private const float twoPi = 2.0f * (float)Math.PI;
1261
1262 public void Create(PathType pathType, int steps)
1263 {
1264 if (pathType == PathType.Linear || pathType == PathType.Flexible)
1265 {
1266 int step = 0;
1267
1268 float length = this.pathCutEnd - this.pathCutBegin;
1269 float twistTotal = twistEnd - twistBegin;
1270 float twistTotalAbs = Math.Abs(twistTotal);
1271 if (twistTotalAbs > 0.01f)
1272 steps += (int)(twistTotalAbs * 3.66); // dahlia's magic number
1273
1274 float start = -0.5f;
1275 float stepSize = length / (float)steps;
1276 float percentOfPathMultiplier = stepSize;
1277 float xOffset = 0.0f;
1278 float yOffset = 0.0f;
1279 float zOffset = start;
1280 float xOffsetStepIncrement = this.topShearX / steps;
1281 float yOffsetStepIncrement = this.topShearY / steps;
1282
1283 float percentOfPath = this.pathCutBegin;
1284 zOffset += percentOfPath;
1285
1286 // sanity checks
1287
1288 bool done = false;
1289
1290 while (!done)
1291 {
1292 PathNode newNode = new PathNode();
1293
1294 newNode.xScale = 1.0f;
1295 if (this.taperX == 0.0f)
1296 newNode.xScale = 1.0f;
1297 else if (this.taperX > 0.0f)
1298 newNode.xScale = 1.0f - percentOfPath * this.taperX;
1299 else newNode.xScale = 1.0f + (1.0f - percentOfPath) * this.taperX;
1300
1301 newNode.yScale = 1.0f;
1302 if (this.taperY == 0.0f)
1303 newNode.yScale = 1.0f;
1304 else if (this.taperY > 0.0f)
1305 newNode.yScale = 1.0f - percentOfPath * this.taperY;
1306 else newNode.yScale = 1.0f + (1.0f - percentOfPath) * this.taperY;
1307
1308 float twist = twistBegin + twistTotal * percentOfPath;
1309
1310 newNode.rotation = new Quat(new Coord(0.0f, 0.0f, 1.0f), twist);
1311 newNode.position = new Coord(xOffset, yOffset, zOffset);
1312 newNode.percentOfPath = percentOfPath;
1313
1314 pathNodes.Add(newNode);
1315
1316 if (step < steps)
1317 {
1318 step += 1;
1319 percentOfPath += percentOfPathMultiplier;
1320 xOffset += xOffsetStepIncrement;
1321 yOffset += yOffsetStepIncrement;
1322 zOffset += stepSize;
1323 if (percentOfPath > this.pathCutEnd)
1324 done = true;
1325 }
1326 else done = true;
1327 }
1328 } // end of linear path code
1329
1330 else // pathType == Circular
1331 {
1332 float twistTotal = twistEnd - twistBegin;
1333
1334 // if the profile has a lot of twist, add more layers otherwise the layers may overlap
1335 // and the resulting mesh may be quite inaccurate. This method is arbitrary and doesn't
1336 // accurately match the viewer
1337 float twistTotalAbs = Math.Abs(twistTotal);
1338 if (twistTotalAbs > 0.01f)
1339 {
1340 if (twistTotalAbs > Math.PI * 1.5f)
1341 steps *= 2;
1342 if (twistTotalAbs > Math.PI * 3.0f)
1343 steps *= 2;
1344 }
1345
1346 float yPathScale = this.holeSizeY * 0.5f;
1347 float pathLength = this.pathCutEnd - this.pathCutBegin;
1348 float totalSkew = this.skew * 2.0f * pathLength;
1349 float skewStart = this.pathCutBegin * 2.0f * this.skew - this.skew;
1350 float xOffsetTopShearXFactor = this.topShearX * (0.25f + 0.5f * (0.5f - this.holeSizeY));
1351 float yShearCompensation = 1.0f + Math.Abs(this.topShearY) * 0.25f;
1352
1353 // It's not quite clear what pushY (Y top shear) does, but subtracting it from the start and end
1354 // angles appears to approximate it's effects on path cut. Likewise, adding it to the angle used
1355 // to calculate the sine for generating the path radius appears to approximate it's effects there
1356 // too, but there are some subtle differences in the radius which are noticeable as the prim size
1357 // increases and it may affect megaprims quite a bit. The effect of the Y top shear parameter on
1358 // the meshes generated with this technique appear nearly identical in shape to the same prims when
1359 // displayed by the viewer.
1360
1361 float startAngle = (twoPi * this.pathCutBegin * this.revolutions) - this.topShearY * 0.9f;
1362 float endAngle = (twoPi * this.pathCutEnd * this.revolutions) - this.topShearY * 0.9f;
1363 float stepSize = twoPi / this.stepsPerRevolution;
1364
1365 int step = (int)(startAngle / stepSize);
1366 float angle = startAngle;
1367
1368 bool done = false;
1369 while (!done) // loop through the length of the path and add the layers
1370 {
1371 PathNode newNode = new PathNode();
1372
1373 float xProfileScale = (1.0f - Math.Abs(this.skew)) * this.holeSizeX;
1374 float yProfileScale = this.holeSizeY;
1375
1376 float percentOfPath = angle / (twoPi * this.revolutions);
1377 float percentOfAngles = (angle - startAngle) / (endAngle - startAngle);
1378
1379 if (this.taperX > 0.01f)
1380 xProfileScale *= 1.0f - percentOfPath * this.taperX;
1381 else if (this.taperX < -0.01f)
1382 xProfileScale *= 1.0f + (1.0f - percentOfPath) * this.taperX;
1383
1384 if (this.taperY > 0.01f)
1385 yProfileScale *= 1.0f - percentOfPath * this.taperY;
1386 else if (this.taperY < -0.01f)
1387 yProfileScale *= 1.0f + (1.0f - percentOfPath) * this.taperY;
1388
1389 newNode.xScale = xProfileScale;
1390 newNode.yScale = yProfileScale;
1391
1392 float radiusScale = 1.0f;
1393 if (this.radius > 0.001f)
1394 radiusScale = 1.0f - this.radius * percentOfPath;
1395 else if (this.radius < 0.001f)
1396 radiusScale = 1.0f + this.radius * (1.0f - percentOfPath);
1397
1398 float twist = twistBegin + twistTotal * percentOfPath;
1399
1400 float xOffset = 0.5f * (skewStart + totalSkew * percentOfAngles);
1401 xOffset += (float)Math.Sin(angle) * xOffsetTopShearXFactor;
1402
1403 float yOffset = yShearCompensation * (float)Math.Cos(angle) * (0.5f - yPathScale) * radiusScale;
1404
1405 float zOffset = (float)Math.Sin(angle + this.topShearY) * (0.5f - yPathScale) * radiusScale;
1406
1407 newNode.position = new Coord(xOffset, yOffset, zOffset);
1408
1409 // now orient the rotation of the profile layer relative to it's position on the path
1410 // adding taperY to the angle used to generate the quat appears to approximate the viewer
1411
1412 newNode.rotation = new Quat(new Coord(1.0f, 0.0f, 0.0f), angle + this.topShearY);
1413
1414 // next apply twist rotation to the profile layer
1415 if (twistTotal != 0.0f || twistBegin != 0.0f)
1416 newNode.rotation *= new Quat(new Coord(0.0f, 0.0f, 1.0f), twist);
1417
1418 newNode.percentOfPath = percentOfPath;
1419
1420 pathNodes.Add(newNode);
1421
1422 // calculate terms for next iteration
1423 // calculate the angle for the next iteration of the loop
1424
1425 if (angle >= endAngle - 0.01)
1426 done = true;
1427 else
1428 {
1429 step += 1;
1430 angle = stepSize * step;
1431 if (angle > endAngle)
1432 angle = endAngle;
1433 }
1434 }
1435 }
1436 }
1437 }
1438
1439 public class PrimMesh
1440 {
1441 public string errorMessage = "";
1442 private const float twoPi = 2.0f * (float)Math.PI;
1443
1444 public List<Coord> coords;
1445 public List<Coord> normals;
1446 public List<Face> faces;
1447
1448 public List<ViewerFace> viewerFaces;
1449
1450 private int sides = 4;
1451 private int hollowSides = 4;
1452 private float profileStart = 0.0f;
1453 private float profileEnd = 1.0f;
1454 private float hollow = 0.0f;
1455 public int twistBegin = 0;
1456 public int twistEnd = 0;
1457 public float topShearX = 0.0f;
1458 public float topShearY = 0.0f;
1459 public float pathCutBegin = 0.0f;
1460 public float pathCutEnd = 1.0f;
1461 public float dimpleBegin = 0.0f;
1462 public float dimpleEnd = 1.0f;
1463 public float skew = 0.0f;
1464 public float holeSizeX = 1.0f; // called pathScaleX in pbs
1465 public float holeSizeY = 0.25f;
1466 public float taperX = 0.0f;
1467 public float taperY = 0.0f;
1468 public float radius = 0.0f;
1469 public float revolutions = 1.0f;
1470 public int stepsPerRevolution = 24;
1471
1472 private int profileOuterFaceNumber = -1;
1473 private int profileHollowFaceNumber = -1;
1474
1475 private bool hasProfileCut = false;
1476 private bool hasHollow = false;
1477 public bool calcVertexNormals = false;
1478 private bool normalsProcessed = false;
1479 public bool viewerMode = false;
1480 public bool sphereMode = false;
1481
1482 public int numPrimFaces = 0;
1483
1484 /// <summary>
1485 /// Human readable string representation of the parameters used to create a mesh.
1486 /// </summary>
1487 /// <returns></returns>
1488 public string ParamsToDisplayString()
1489 {
1490 string s = "";
1491 s += "sides..................: " + this.sides.ToString();
1492 s += "\nhollowSides..........: " + this.hollowSides.ToString();
1493 s += "\nprofileStart.........: " + this.profileStart.ToString();
1494 s += "\nprofileEnd...........: " + this.profileEnd.ToString();
1495 s += "\nhollow...............: " + this.hollow.ToString();
1496 s += "\ntwistBegin...........: " + this.twistBegin.ToString();
1497 s += "\ntwistEnd.............: " + this.twistEnd.ToString();
1498 s += "\ntopShearX............: " + this.topShearX.ToString();
1499 s += "\ntopShearY............: " + this.topShearY.ToString();
1500 s += "\npathCutBegin.........: " + this.pathCutBegin.ToString();
1501 s += "\npathCutEnd...........: " + this.pathCutEnd.ToString();
1502 s += "\ndimpleBegin..........: " + this.dimpleBegin.ToString();
1503 s += "\ndimpleEnd............: " + this.dimpleEnd.ToString();
1504 s += "\nskew.................: " + this.skew.ToString();
1505 s += "\nholeSizeX............: " + this.holeSizeX.ToString();
1506 s += "\nholeSizeY............: " + this.holeSizeY.ToString();
1507 s += "\ntaperX...............: " + this.taperX.ToString();
1508 s += "\ntaperY...............: " + this.taperY.ToString();
1509 s += "\nradius...............: " + this.radius.ToString();
1510 s += "\nrevolutions..........: " + this.revolutions.ToString();
1511 s += "\nstepsPerRevolution...: " + this.stepsPerRevolution.ToString();
1512 s += "\nsphereMode...........: " + this.sphereMode.ToString();
1513 s += "\nhasProfileCut........: " + this.hasProfileCut.ToString();
1514 s += "\nhasHollow............: " + this.hasHollow.ToString();
1515 s += "\nviewerMode...........: " + this.viewerMode.ToString();
1516
1517 return s;
1518 }
1519
1520 public int ProfileOuterFaceNumber
1521 {
1522 get { return profileOuterFaceNumber; }
1523 }
1524
1525 public int ProfileHollowFaceNumber
1526 {
1527 get { return profileHollowFaceNumber; }
1528 }
1529
1530 public bool HasProfileCut
1531 {
1532 get { return hasProfileCut; }
1533 }
1534
1535 public bool HasHollow
1536 {
1537 get { return hasHollow; }
1538 }
1539
1540
1541 /// <summary>
1542 /// Constructs a PrimMesh object and creates the profile for extrusion.
1543 /// </summary>
1544 /// <param name="sides"></param>
1545 /// <param name="profileStart"></param>
1546 /// <param name="profileEnd"></param>
1547 /// <param name="hollow"></param>
1548 /// <param name="hollowSides"></param>
1549 public PrimMesh(int sides, float profileStart, float profileEnd, float hollow, int hollowSides)
1550 {
1551 this.coords = new List<Coord>();
1552 this.faces = new List<Face>();
1553
1554 this.sides = sides;
1555 this.profileStart = profileStart;
1556 this.profileEnd = profileEnd;
1557 this.hollow = hollow;
1558 this.hollowSides = hollowSides;
1559
1560 if (sides < 3)
1561 this.sides = 3;
1562 if (hollowSides < 3)
1563 this.hollowSides = 3;
1564 if (profileStart < 0.0f)
1565 this.profileStart = 0.0f;
1566 if (profileEnd > 1.0f)
1567 this.profileEnd = 1.0f;
1568 if (profileEnd < 0.02f)
1569 this.profileEnd = 0.02f;
1570 if (profileStart >= profileEnd)
1571 this.profileStart = profileEnd - 0.02f;
1572 if (hollow > 0.99f)
1573 this.hollow = 0.99f;
1574 if (hollow < 0.0f)
1575 this.hollow = 0.0f;
1576
1577 //if (sphereMode)
1578 // this.hasProfileCut = this.profileEnd - this.profileStart < 0.4999f;
1579 //else
1580 // //this.hasProfileCut = (this.profileStart > 0.0f || this.profileEnd < 1.0f);
1581 // this.hasProfileCut = this.profileEnd - this.profileStart < 0.9999f;
1582 //this.hasHollow = (this.hollow > 0.001f);
1583 }
1584
1585 /// <summary>
1586 /// Extrudes a profile along a path.
1587 /// </summary>
1588 public void Extrude(PathType pathType)
1589 {
1590 bool needEndFaces = false;
1591
1592 this.coords = new List<Coord>();
1593 this.faces = new List<Face>();
1594
1595 if (this.viewerMode)
1596 {
1597 this.viewerFaces = new List<ViewerFace>();
1598 this.calcVertexNormals = true;
1599 }
1600
1601 if (this.calcVertexNormals)
1602 this.normals = new List<Coord>();
1603
1604 int steps = 1;
1605
1606 float length = this.pathCutEnd - this.pathCutBegin;
1607 normalsProcessed = false;
1608
1609 if (this.viewerMode && this.sides == 3)
1610 {
1611 // prisms don't taper well so add some vertical resolution
1612 // other prims may benefit from this but just do prisms for now
1613 if (Math.Abs(this.taperX) > 0.01 || Math.Abs(this.taperY) > 0.01)
1614 steps = (int)(steps * 4.5 * length);
1615 }
1616
1617 if (sphereMode)
1618 this.hasProfileCut = this.profileEnd - this.profileStart < 0.4999f;
1619 else
1620 //this.hasProfileCut = (this.profileStart > 0.0f || this.profileEnd < 1.0f);
1621 this.hasProfileCut = this.profileEnd - this.profileStart < 0.9999f;
1622 this.hasHollow = (this.hollow > 0.001f);
1623
1624 float twistBegin = this.twistBegin / 360.0f * twoPi;
1625 float twistEnd = this.twistEnd / 360.0f * twoPi;
1626 float twistTotal = twistEnd - twistBegin;
1627 float twistTotalAbs = Math.Abs(twistTotal);
1628 if (twistTotalAbs > 0.01f)
1629 steps += (int)(twistTotalAbs * 3.66); // dahlia's magic number
1630
1631 float hollow = this.hollow;
1632
1633 // sanity checks
1634 float initialProfileRot = 0.0f;
1635 if (pathType == PathType.Circular)
1636 {
1637 if (this.sides == 3)
1638 {
1639 initialProfileRot = (float)Math.PI;
1640 if (this.hollowSides == 4)
1641 {
1642 if (hollow > 0.7f)
1643 hollow = 0.7f;
1644 hollow *= 0.707f;
1645 }
1646 else hollow *= 0.5f;
1647 }
1648 else if (this.sides == 4)
1649 {
1650 initialProfileRot = 0.25f * (float)Math.PI;
1651 if (this.hollowSides != 4)
1652 hollow *= 0.707f;
1653 }
1654 else if (this.sides > 4)
1655 {
1656 initialProfileRot = (float)Math.PI;
1657 if (this.hollowSides == 4)
1658 {
1659 if (hollow > 0.7f)
1660 hollow = 0.7f;
1661 hollow /= 0.7f;
1662 }
1663 }
1664 }
1665 else
1666 {
1667 if (this.sides == 3)
1668 {
1669 if (this.hollowSides == 4)
1670 {
1671 if (hollow > 0.7f)
1672 hollow = 0.7f;
1673 hollow *= 0.707f;
1674 }
1675 else hollow *= 0.5f;
1676 }
1677 else if (this.sides == 4)
1678 {
1679 initialProfileRot = 1.25f * (float)Math.PI;
1680 if (this.hollowSides != 4)
1681 hollow *= 0.707f;
1682 }
1683 else if (this.sides == 24 && this.hollowSides == 4)
1684 hollow *= 1.414f;
1685 }
1686
1687 Profile profile = new Profile(this.sides, this.profileStart, this.profileEnd, hollow, this.hollowSides, true, calcVertexNormals);
1688 this.errorMessage = profile.errorMessage;
1689
1690 this.numPrimFaces = profile.numPrimFaces;
1691
1692 //profileOuterFaceNumber = profile.faceNumbers[0];
1693 //if (!needEndFaces)
1694 // profileOuterFaceNumber--;
1695 //profileOuterFaceNumber = needEndFaces ? 1 : 0;
1696
1697
1698 //if (hasHollow)
1699 //{
1700 // if (needEndFaces)
1701 // profileHollowFaceNumber = profile.faceNumbers[profile.numOuterVerts + 1];
1702 // else
1703 // profileHollowFaceNumber = profile.faceNumbers[profile.numOuterVerts] - 1;
1704 //}
1705
1706
1707 profileOuterFaceNumber = profile.outerFaceNumber;
1708 if (!needEndFaces)
1709 profileOuterFaceNumber--;
1710
1711 if (hasHollow)
1712 {
1713 profileHollowFaceNumber = profile.hollowFaceNumber;
1714 if (!needEndFaces)
1715 profileHollowFaceNumber--;
1716 }
1717
1718 int cut1Vert = -1;
1719 int cut2Vert = -1;
1720 if (hasProfileCut)
1721 {
1722 cut1Vert = hasHollow ? profile.coords.Count - 1 : 0;
1723 cut2Vert = hasHollow ? profile.numOuterVerts - 1 : profile.numOuterVerts;
1724 }
1725
1726 if (initialProfileRot != 0.0f)
1727 {
1728 profile.AddRot(new Quat(new Coord(0.0f, 0.0f, 1.0f), initialProfileRot));
1729 if (viewerMode)
1730 profile.MakeFaceUVs();
1731 }
1732
1733 Coord lastCutNormal1 = new Coord();
1734 Coord lastCutNormal2 = new Coord();
1735 float lastV = 1.0f;
1736
1737 Path path = new Path();
1738 path.twistBegin = twistBegin;
1739 path.twistEnd = twistEnd;
1740 path.topShearX = topShearX;
1741 path.topShearY = topShearY;
1742 path.pathCutBegin = pathCutBegin;
1743 path.pathCutEnd = pathCutEnd;
1744 path.dimpleBegin = dimpleBegin;
1745 path.dimpleEnd = dimpleEnd;
1746 path.skew = skew;
1747 path.holeSizeX = holeSizeX;
1748 path.holeSizeY = holeSizeY;
1749 path.taperX = taperX;
1750 path.taperY = taperY;
1751 path.radius = radius;
1752 path.revolutions = revolutions;
1753 path.stepsPerRevolution = stepsPerRevolution;
1754
1755 path.Create(pathType, steps);
1756
1757
1758 if (pathType == PathType.Circular)
1759 {
1760 needEndFaces = false;
1761 if (this.pathCutBegin != 0.0f || this.pathCutEnd != 1.0f)
1762 needEndFaces = true;
1763 else if (this.taperX != 0.0f || this.taperY != 0.0f)
1764 needEndFaces = true;
1765 else if (this.skew != 0.0f)
1766 needEndFaces = true;
1767 else if (twistTotal != 0.0f)
1768 needEndFaces = true;
1769 else if (this.radius != 0.0f)
1770 needEndFaces = true;
1771 }
1772 else needEndFaces = true;
1773
1774 for (int nodeIndex = 0; nodeIndex < path.pathNodes.Count; nodeIndex++)
1775 {
1776 PathNode node = path.pathNodes[nodeIndex];
1777 Profile newLayer = profile.Copy();
1778 newLayer.Scale(node.xScale, node.yScale);
1779
1780 newLayer.AddRot(node.rotation);
1781 newLayer.AddPos(node.position);
1782
1783 if (needEndFaces && nodeIndex == 0)
1784 {
1785 newLayer.FlipNormals();
1786
1787 // add the top faces to the viewerFaces list here
1788 if (this.viewerMode)
1789 {
1790 Coord faceNormal = newLayer.faceNormal;
1791 ViewerFace newViewerFace = new ViewerFace(profile.bottomFaceNumber);
1792 int numFaces = newLayer.faces.Count;
1793 List<Face> faces = newLayer.faces;
1794
1795 for (int i = 0; i < numFaces; i++)
1796 {
1797 Face face = faces[i];
1798 newViewerFace.v1 = newLayer.coords[face.v1];
1799 newViewerFace.v2 = newLayer.coords[face.v2];
1800 newViewerFace.v3 = newLayer.coords[face.v3];
1801
1802 newViewerFace.coordIndex1 = face.v1;
1803 newViewerFace.coordIndex2 = face.v2;
1804 newViewerFace.coordIndex3 = face.v3;
1805
1806 newViewerFace.n1 = faceNormal;
1807 newViewerFace.n2 = faceNormal;
1808 newViewerFace.n3 = faceNormal;
1809
1810 newViewerFace.uv1 = newLayer.faceUVs[face.v1];
1811 newViewerFace.uv2 = newLayer.faceUVs[face.v2];
1812 newViewerFace.uv3 = newLayer.faceUVs[face.v3];
1813
1814 this.viewerFaces.Add(newViewerFace);
1815 }
1816 }
1817 } // if (nodeIndex == 0)
1818
1819 // append this layer
1820
1821 int coordsLen = this.coords.Count;
1822 newLayer.AddValue2FaceVertexIndices(coordsLen);
1823
1824 this.coords.AddRange(newLayer.coords);
1825
1826 if (this.calcVertexNormals)
1827 {
1828 newLayer.AddValue2FaceNormalIndices(this.normals.Count);
1829 this.normals.AddRange(newLayer.vertexNormals);
1830 }
1831
1832 if (node.percentOfPath < this.pathCutBegin + 0.01f || node.percentOfPath > this.pathCutEnd - 0.01f)
1833 this.faces.AddRange(newLayer.faces);
1834
1835 // fill faces between layers
1836
1837 int numVerts = newLayer.coords.Count;
1838 Face newFace = new Face();
1839
1840 if (nodeIndex > 0)
1841 {
1842 int startVert = coordsLen + 1;
1843 int endVert = this.coords.Count;
1844
1845 if (sides < 5 || this.hasProfileCut || this.hasHollow)
1846 startVert--;
1847
1848 for (int i = startVert; i < endVert; i++)
1849 {
1850 int iNext = i + 1;
1851 if (i == endVert - 1)
1852 iNext = startVert;
1853
1854 int whichVert = i - startVert;
1855
1856 newFace.v1 = i;
1857 newFace.v2 = i - numVerts;
1858 newFace.v3 = iNext - numVerts;
1859 this.faces.Add(newFace);
1860
1861 newFace.v2 = iNext - numVerts;
1862 newFace.v3 = iNext;
1863 this.faces.Add(newFace);
1864
1865 if (this.viewerMode)
1866 {
1867 // add the side faces to the list of viewerFaces here
1868
1869 int primFaceNum = profile.faceNumbers[whichVert];
1870 if (!needEndFaces)
1871 primFaceNum -= 1;
1872
1873 ViewerFace newViewerFace1 = new ViewerFace(primFaceNum);
1874 ViewerFace newViewerFace2 = new ViewerFace(primFaceNum);
1875
1876 float u1 = newLayer.us[whichVert];
1877 float u2 = 1.0f;
1878 if (whichVert < newLayer.us.Count - 1)
1879 u2 = newLayer.us[whichVert + 1];
1880
1881 if (whichVert == cut1Vert || whichVert == cut2Vert)
1882 {
1883 u1 = 0.0f;
1884 u2 = 1.0f;
1885 }
1886 else if (sides < 5)
1887 {
1888 if (whichVert < profile.numOuterVerts)
1889 { // boxes and prisms have one texture face per side of the prim, so the U values have to be scaled
1890 // to reflect the entire texture width
1891 u1 *= sides;
1892 u2 *= sides;
1893 u2 -= (int)u1;
1894 u1 -= (int)u1;
1895 if (u2 < 0.1f)
1896 u2 = 1.0f;
1897 //this.profileOuterFaceNumber = primFaceNum;
1898 }
1899 else if (whichVert > profile.coords.Count - profile.numHollowVerts - 1)
1900 {
1901 u1 *= 2.0f;
1902 u2 *= 2.0f;
1903 //this.profileHollowFaceNumber = primFaceNum;
1904 }
1905 }
1906
1907 newViewerFace1.uv1.U = u1;
1908 newViewerFace1.uv2.U = u1;
1909 newViewerFace1.uv3.U = u2;
1910
1911 newViewerFace1.uv1.V = 1.0f - node.percentOfPath;
1912 newViewerFace1.uv2.V = lastV;
1913 newViewerFace1.uv3.V = lastV;
1914
1915 newViewerFace2.uv1.U = u1;
1916 newViewerFace2.uv2.U = u2;
1917 newViewerFace2.uv3.U = u2;
1918
1919 newViewerFace2.uv1.V = 1.0f - node.percentOfPath;
1920 newViewerFace2.uv2.V = lastV;
1921 newViewerFace2.uv3.V = 1.0f - node.percentOfPath;
1922
1923 newViewerFace1.v1 = this.coords[i];
1924 newViewerFace1.v2 = this.coords[i - numVerts];
1925 newViewerFace1.v3 = this.coords[iNext - numVerts];
1926
1927 newViewerFace2.v1 = this.coords[i];
1928 newViewerFace2.v2 = this.coords[iNext - numVerts];
1929 newViewerFace2.v3 = this.coords[iNext];
1930
1931 newViewerFace1.coordIndex1 = i;
1932 newViewerFace1.coordIndex2 = i - numVerts;
1933 newViewerFace1.coordIndex3 = iNext - numVerts;
1934
1935 newViewerFace2.coordIndex1 = i;
1936 newViewerFace2.coordIndex2 = iNext - numVerts;
1937 newViewerFace2.coordIndex3 = iNext;
1938
1939 // profile cut faces
1940 if (whichVert == cut1Vert)
1941 {
1942 newViewerFace1.n1 = newLayer.cutNormal1;
1943 newViewerFace1.n2 = newViewerFace1.n3 = lastCutNormal1;
1944
1945 newViewerFace2.n1 = newViewerFace2.n3 = newLayer.cutNormal1;
1946 newViewerFace2.n2 = lastCutNormal1;
1947 }
1948 else if (whichVert == cut2Vert)
1949 {
1950 newViewerFace1.n1 = newLayer.cutNormal2;
1951 newViewerFace1.n2 = newViewerFace1.n3 = lastCutNormal2;
1952
1953 newViewerFace2.n1 = newViewerFace2.n3 = newLayer.cutNormal2;
1954 newViewerFace2.n2 = lastCutNormal2;
1955 }
1956
1957 else // outer and hollow faces
1958 {
1959 if ((sides < 5 && whichVert < newLayer.numOuterVerts) || (hollowSides < 5 && whichVert >= newLayer.numOuterVerts))
1960 { // looks terrible when path is twisted... need vertex normals here
1961 newViewerFace1.CalcSurfaceNormal();
1962 newViewerFace2.CalcSurfaceNormal();
1963 }
1964 else
1965 {
1966 newViewerFace1.n1 = this.normals[i];
1967 newViewerFace1.n2 = this.normals[i - numVerts];
1968 newViewerFace1.n3 = this.normals[iNext - numVerts];
1969
1970 newViewerFace2.n1 = this.normals[i];
1971 newViewerFace2.n2 = this.normals[iNext - numVerts];
1972 newViewerFace2.n3 = this.normals[iNext];
1973 }
1974 }
1975
1976 this.viewerFaces.Add(newViewerFace1);
1977 this.viewerFaces.Add(newViewerFace2);
1978
1979 }
1980 }
1981 }
1982
1983 lastCutNormal1 = newLayer.cutNormal1;
1984 lastCutNormal2 = newLayer.cutNormal2;
1985 lastV = 1.0f - node.percentOfPath;
1986
1987 if (needEndFaces && nodeIndex == path.pathNodes.Count - 1 && viewerMode)
1988 {
1989 // add the top faces to the viewerFaces list here
1990 Coord faceNormal = newLayer.faceNormal;
1991 ViewerFace newViewerFace = new ViewerFace();
1992 newViewerFace.primFaceNumber = 0;
1993 int numFaces = newLayer.faces.Count;
1994 List<Face> faces = newLayer.faces;
1995
1996 for (int i = 0; i < numFaces; i++)
1997 {
1998 Face face = faces[i];
1999 newViewerFace.v1 = newLayer.coords[face.v1 - coordsLen];
2000 newViewerFace.v2 = newLayer.coords[face.v2 - coordsLen];
2001 newViewerFace.v3 = newLayer.coords[face.v3 - coordsLen];
2002
2003 newViewerFace.coordIndex1 = face.v1 - coordsLen;
2004 newViewerFace.coordIndex2 = face.v2 - coordsLen;
2005 newViewerFace.coordIndex3 = face.v3 - coordsLen;
2006
2007 newViewerFace.n1 = faceNormal;
2008 newViewerFace.n2 = faceNormal;
2009 newViewerFace.n3 = faceNormal;
2010
2011 newViewerFace.uv1 = newLayer.faceUVs[face.v1 - coordsLen];
2012 newViewerFace.uv2 = newLayer.faceUVs[face.v2 - coordsLen];
2013 newViewerFace.uv3 = newLayer.faceUVs[face.v3 - coordsLen];
2014
2015 this.viewerFaces.Add(newViewerFace);
2016 }
2017 }
2018
2019
2020 } // for (int nodeIndex = 0; nodeIndex < path.pathNodes.Count; nodeIndex++)
2021
2022 }
2023
2024
2025 /// <summary>
2026 /// DEPRICATED - use Extrude(PathType.Linear) instead
2027 /// Extrudes a profile along a straight line path. Used for prim types box, cylinder, and prism.
2028 /// </summary>
2029 ///
2030 public void ExtrudeLinear()
2031 {
2032 this.Extrude(PathType.Linear);
2033 }
2034
2035
2036 /// <summary>
2037 /// DEPRICATED - use Extrude(PathType.Circular) instead
2038 /// Extrude a profile into a circular path prim mesh. Used for prim types torus, tube, and ring.
2039 /// </summary>
2040 ///
2041 public void ExtrudeCircular()
2042 {
2043 this.Extrude(PathType.Circular);
2044 }
2045
2046
2047 private Coord SurfaceNormal(Coord c1, Coord c2, Coord c3)
2048 {
2049 Coord edge1 = new Coord(c2.X - c1.X, c2.Y - c1.Y, c2.Z - c1.Z);
2050 Coord edge2 = new Coord(c3.X - c1.X, c3.Y - c1.Y, c3.Z - c1.Z);
2051
2052 Coord normal = Coord.Cross(edge1, edge2);
2053
2054 normal.Normalize();
2055
2056 return normal;
2057 }
2058
2059 private Coord SurfaceNormal(Face face)
2060 {
2061 return SurfaceNormal(this.coords[face.v1], this.coords[face.v2], this.coords[face.v3]);
2062 }
2063
2064 /// <summary>
2065 /// Calculate the surface normal for a face in the list of faces
2066 /// </summary>
2067 /// <param name="faceIndex"></param>
2068 /// <returns></returns>
2069 public Coord SurfaceNormal(int faceIndex)
2070 {
2071 int numFaces = this.faces.Count;
2072 if (faceIndex < 0 || faceIndex >= numFaces)
2073 throw new Exception("faceIndex out of range");
2074
2075 return SurfaceNormal(this.faces[faceIndex]);
2076 }
2077
2078 /// <summary>
2079 /// Duplicates a PrimMesh object. All object properties are copied by value, including lists.
2080 /// </summary>
2081 /// <returns></returns>
2082 public PrimMesh Copy()
2083 {
2084 PrimMesh copy = new PrimMesh(this.sides, this.profileStart, this.profileEnd, this.hollow, this.hollowSides);
2085 copy.twistBegin = this.twistBegin;
2086 copy.twistEnd = this.twistEnd;
2087 copy.topShearX = this.topShearX;
2088 copy.topShearY = this.topShearY;
2089 copy.pathCutBegin = this.pathCutBegin;
2090 copy.pathCutEnd = this.pathCutEnd;
2091 copy.dimpleBegin = this.dimpleBegin;
2092 copy.dimpleEnd = this.dimpleEnd;
2093 copy.skew = this.skew;
2094 copy.holeSizeX = this.holeSizeX;
2095 copy.holeSizeY = this.holeSizeY;
2096 copy.taperX = this.taperX;
2097 copy.taperY = this.taperY;
2098 copy.radius = this.radius;
2099 copy.revolutions = this.revolutions;
2100 copy.stepsPerRevolution = this.stepsPerRevolution;
2101 copy.calcVertexNormals = this.calcVertexNormals;
2102 copy.normalsProcessed = this.normalsProcessed;
2103 copy.viewerMode = this.viewerMode;
2104 copy.numPrimFaces = this.numPrimFaces;
2105 copy.errorMessage = this.errorMessage;
2106
2107 copy.coords = new List<Coord>(this.coords);
2108 copy.faces = new List<Face>(this.faces);
2109 copy.viewerFaces = new List<ViewerFace>(this.viewerFaces);
2110 copy.normals = new List<Coord>(this.normals);
2111
2112 return copy;
2113 }
2114
2115 /// <summary>
2116 /// Calculate surface normals for all of the faces in the list of faces in this mesh
2117 /// </summary>
2118 public void CalcNormals()
2119 {
2120 if (normalsProcessed)
2121 return;
2122
2123 normalsProcessed = true;
2124
2125 int numFaces = faces.Count;
2126
2127 if (!this.calcVertexNormals)
2128 this.normals = new List<Coord>();
2129
2130 for (int i = 0; i < numFaces; i++)
2131 {
2132 Face face = faces[i];
2133
2134 this.normals.Add(SurfaceNormal(i).Normalize());
2135
2136 int normIndex = normals.Count - 1;
2137 face.n1 = normIndex;
2138 face.n2 = normIndex;
2139 face.n3 = normIndex;
2140
2141 this.faces[i] = face;
2142 }
2143 }
2144
2145 /// <summary>
2146 /// Adds a value to each XYZ vertex coordinate in the mesh
2147 /// </summary>
2148 /// <param name="x"></param>
2149 /// <param name="y"></param>
2150 /// <param name="z"></param>
2151 public void AddPos(float x, float y, float z)
2152 {
2153 int i;
2154 int numVerts = this.coords.Count;
2155 Coord vert;
2156
2157 for (i = 0; i < numVerts; i++)
2158 {
2159 vert = this.coords[i];
2160 vert.X += x;
2161 vert.Y += y;
2162 vert.Z += z;
2163 this.coords[i] = vert;
2164 }
2165
2166 if (this.viewerFaces != null)
2167 {
2168 int numViewerFaces = this.viewerFaces.Count;
2169
2170 for (i = 0; i < numViewerFaces; i++)
2171 {
2172 ViewerFace v = this.viewerFaces[i];
2173 v.AddPos(x, y, z);
2174 this.viewerFaces[i] = v;
2175 }
2176 }
2177 }
2178
2179 /// <summary>
2180 /// Rotates the mesh
2181 /// </summary>
2182 /// <param name="q"></param>
2183 public void AddRot(Quat q)
2184 {
2185 int i;
2186 int numVerts = this.coords.Count;
2187
2188 for (i = 0; i < numVerts; i++)
2189 this.coords[i] *= q;
2190
2191 if (this.normals != null)
2192 {
2193 int numNormals = this.normals.Count;
2194 for (i = 0; i < numNormals; i++)
2195 this.normals[i] *= q;
2196 }
2197
2198 if (this.viewerFaces != null)
2199 {
2200 int numViewerFaces = this.viewerFaces.Count;
2201
2202 for (i = 0; i < numViewerFaces; i++)
2203 {
2204 ViewerFace v = this.viewerFaces[i];
2205 v.v1 *= q;
2206 v.v2 *= q;
2207 v.v3 *= q;
2208
2209 v.n1 *= q;
2210 v.n2 *= q;
2211 v.n3 *= q;
2212 this.viewerFaces[i] = v;
2213 }
2214 }
2215 }
2216
2217#if VERTEX_INDEXER
2218 public VertexIndexer GetVertexIndexer()
2219 {
2220 if (this.viewerMode && this.viewerFaces.Count > 0)
2221 return new VertexIndexer(this);
2222 return null;
2223 }
2224#endif
2225
2226 /// <summary>
2227 /// Scales the mesh
2228 /// </summary>
2229 /// <param name="x"></param>
2230 /// <param name="y"></param>
2231 /// <param name="z"></param>
2232 public void Scale(float x, float y, float z)
2233 {
2234 int i;
2235 int numVerts = this.coords.Count;
2236 //Coord vert;
2237
2238 Coord m = new Coord(x, y, z);
2239 for (i = 0; i < numVerts; i++)
2240 this.coords[i] *= m;
2241
2242 if (this.viewerFaces != null)
2243 {
2244 int numViewerFaces = this.viewerFaces.Count;
2245 for (i = 0; i < numViewerFaces; i++)
2246 {
2247 ViewerFace v = this.viewerFaces[i];
2248 v.v1 *= m;
2249 v.v2 *= m;
2250 v.v3 *= m;
2251 this.viewerFaces[i] = v;
2252 }
2253
2254 }
2255
2256 }
2257
2258 /// <summary>
2259 /// Dumps the mesh to a Blender compatible "Raw" format file
2260 /// </summary>
2261 /// <param name="path"></param>
2262 /// <param name="name"></param>
2263 /// <param name="title"></param>
2264 public void DumpRaw(String path, String name, String title)
2265 {
2266 if (path == null)
2267 return;
2268 String fileName = name + "_" + title + ".raw";
2269 String completePath = System.IO.Path.Combine(path, fileName);
2270 StreamWriter sw = new StreamWriter(completePath);
2271
2272 for (int i = 0; i < this.faces.Count; i++)
2273 {
2274 string s = this.coords[this.faces[i].v1].ToString();
2275 s += " " + this.coords[this.faces[i].v2].ToString();
2276 s += " " + this.coords[this.faces[i].v3].ToString();
2277
2278 sw.WriteLine(s);
2279 }
2280
2281 sw.Close();
2282 }
2283 }
2284}
diff --git a/OpenSim/Region/Physics/UbitMeshing/SculptMap.cs b/OpenSim/Region/Physics/UbitMeshing/SculptMap.cs
new file mode 100644
index 0000000..b3d9cb6
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/SculptMap.cs
@@ -0,0 +1,197 @@
1/*
2 * Copyright (c) Contributors
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28// to build without references to System.Drawing, comment this out
29#define SYSTEM_DRAWING
30
31using System;
32using System.Collections.Generic;
33using System.Text;
34
35#if SYSTEM_DRAWING
36using System.Drawing;
37using System.Drawing.Imaging;
38
39namespace PrimMesher
40{
41 public class SculptMap
42 {
43 public int width;
44 public int height;
45 public byte[] redBytes;
46 public byte[] greenBytes;
47 public byte[] blueBytes;
48
49 public SculptMap()
50 {
51 }
52
53 public SculptMap(Bitmap bm, int lod)
54 {
55 int bmW = bm.Width;
56 int bmH = bm.Height;
57
58 if (bmW == 0 || bmH == 0)
59 throw new Exception("SculptMap: bitmap has no data");
60
61 int numLodPixels = lod * lod; // (32 * 2)^2 = 64^2 pixels for default sculpt map image
62
63 bool smallMap = bmW * bmH <= numLodPixels;
64 bool needsScaling = false;
65
66 width = bmW;
67 height = bmH;
68 while (width * height > numLodPixels * 4)
69 {
70 width >>= 1;
71 height >>= 1;
72 needsScaling = true;
73 }
74
75 try
76 {
77 if (needsScaling)
78 bm = ScaleImage(bm, width, height);
79 }
80
81 catch (Exception e)
82 {
83 throw new Exception("Exception in ScaleImage(): e: " + e.ToString());
84 }
85
86 if (width * height > numLodPixels)
87 {
88 width >>= 1;
89 height >>= 1;
90 }
91
92 int numBytes = (width + 1) * (height + 1);
93 redBytes = new byte[numBytes];
94 greenBytes = new byte[numBytes];
95 blueBytes = new byte[numBytes];
96
97 int byteNdx = 0;
98
99 try
100 {
101 for (int y = 0; y <= height; y++)
102 {
103 for (int x = 0; x <= width; x++)
104 {
105 Color c;
106
107 if (smallMap)
108 c = bm.GetPixel(x < width ? x : x - 1,
109 y < height ? y : y - 1);
110 else
111 c = bm.GetPixel(x < width ? x * 2 : x * 2 - 1,
112 y < height ? y * 2 : y * 2 - 1);
113
114 redBytes[byteNdx] = c.R;
115 greenBytes[byteNdx] = c.G;
116 blueBytes[byteNdx] = c.B;
117
118 ++byteNdx;
119 }
120 }
121 }
122 catch (Exception e)
123 {
124 throw new Exception("Caught exception processing byte arrays in SculptMap(): e: " + e.ToString());
125 }
126
127 width++;
128 height++;
129 }
130
131 public List<List<Coord>> ToRows(bool mirror)
132 {
133 int numRows = height;
134 int numCols = width;
135
136 List<List<Coord>> rows = new List<List<Coord>>(numRows);
137
138 float pixScale = 1.0f / 255;
139
140 int rowNdx, colNdx;
141 int smNdx = 0;
142
143
144 for (rowNdx = 0; rowNdx < numRows; rowNdx++)
145 {
146 List<Coord> row = new List<Coord>(numCols);
147 for (colNdx = 0; colNdx < numCols; colNdx++)
148 {
149
150 if (mirror)
151 row.Add(new Coord(-((float)redBytes[smNdx] * pixScale - 0.5f), ((float)greenBytes[smNdx] * pixScale - 0.5f), (float)blueBytes[smNdx] * pixScale - 0.5f));
152 else
153 row.Add(new Coord((float)redBytes[smNdx] * pixScale - 0.5f, (float)greenBytes[smNdx] * pixScale - 0.5f, (float)blueBytes[smNdx] * pixScale - 0.5f));
154
155 ++smNdx;
156 }
157 rows.Add(row);
158 }
159 return rows;
160 }
161
162 private Bitmap ScaleImage(Bitmap srcImage, int destWidth, int destHeight)
163 {
164
165 Bitmap scaledImage = new Bitmap(destWidth, destHeight, PixelFormat.Format24bppRgb);
166
167 Color c;
168 float xscale = srcImage.Width / destWidth;
169 float yscale = srcImage.Height / destHeight;
170
171 float sy = 0.5f;
172 for (int y = 0; y < destHeight; y++)
173 {
174 float sx = 0.5f;
175 for (int x = 0; x < destWidth; x++)
176 {
177 try
178 {
179 c = srcImage.GetPixel((int)(sx), (int)(sy));
180 scaledImage.SetPixel(x, y, Color.FromArgb(c.R, c.G, c.B));
181 }
182 catch (IndexOutOfRangeException)
183 {
184 }
185
186 sx += xscale;
187 }
188 sy += yscale;
189 }
190 srcImage.Dispose();
191 return scaledImage;
192 }
193
194 }
195
196 }
197#endif
diff --git a/OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs b/OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs
new file mode 100644
index 0000000..4a7f3ad
--- /dev/null
+++ b/OpenSim/Region/Physics/UbitMeshing/SculptMesh.cs
@@ -0,0 +1,646 @@
1/*
2 * Copyright (c) Contributors
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28// to build without references to System.Drawing, comment this out
29#define SYSTEM_DRAWING
30
31using System;
32using System.Collections.Generic;
33using System.Text;
34using System.IO;
35
36#if SYSTEM_DRAWING
37using System.Drawing;
38using System.Drawing.Imaging;
39#endif
40
41namespace PrimMesher
42{
43
44 public class SculptMesh
45 {
46 public List<Coord> coords;
47 public List<Face> faces;
48
49 public List<ViewerFace> viewerFaces;
50 public List<Coord> normals;
51 public List<UVCoord> uvs;
52
53 public enum SculptType { sphere = 1, torus = 2, plane = 3, cylinder = 4 };
54
55#if SYSTEM_DRAWING
56
57 public SculptMesh SculptMeshFromFile(string fileName, SculptType sculptType, int lod, bool viewerMode)
58 {
59 Bitmap bitmap = (Bitmap)Bitmap.FromFile(fileName);
60 SculptMesh sculptMesh = new SculptMesh(bitmap, sculptType, lod, viewerMode);
61 bitmap.Dispose();
62 return sculptMesh;
63 }
64
65
66 public SculptMesh(string fileName, int sculptType, int lod, int viewerMode, int mirror, int invert)
67 {
68 Bitmap bitmap = (Bitmap)Bitmap.FromFile(fileName);
69 _SculptMesh(bitmap, (SculptType)sculptType, lod, viewerMode != 0, mirror != 0, invert != 0);
70 bitmap.Dispose();
71 }
72#endif
73
74 /// <summary>
75 /// ** Experimental ** May disappear from future versions ** not recommeneded for use in applications
76 /// Construct a sculpt mesh from a 2D array of floats
77 /// </summary>
78 /// <param name="zMap"></param>
79 /// <param name="xBegin"></param>
80 /// <param name="xEnd"></param>
81 /// <param name="yBegin"></param>
82 /// <param name="yEnd"></param>
83 /// <param name="viewerMode"></param>
84 public SculptMesh(float[,] zMap, float xBegin, float xEnd, float yBegin, float yEnd, bool viewerMode)
85 {
86 float xStep, yStep;
87 float uStep, vStep;
88
89 int numYElements = zMap.GetLength(0);
90 int numXElements = zMap.GetLength(1);
91
92 try
93 {
94 xStep = (xEnd - xBegin) / (float)(numXElements - 1);
95 yStep = (yEnd - yBegin) / (float)(numYElements - 1);
96
97 uStep = 1.0f / (numXElements - 1);
98 vStep = 1.0f / (numYElements - 1);
99 }
100 catch (DivideByZeroException)
101 {
102 return;
103 }
104
105 coords = new List<Coord>();
106 faces = new List<Face>();
107 normals = new List<Coord>();
108 uvs = new List<UVCoord>();
109
110 viewerFaces = new List<ViewerFace>();
111
112 int p1, p2, p3, p4;
113
114 int x, y;
115 int xStart = 0, yStart = 0;
116
117 for (y = yStart; y < numYElements; y++)
118 {
119 int rowOffset = y * numXElements;
120
121 for (x = xStart; x < numXElements; x++)
122 {
123 /*
124 * p1-----p2
125 * | \ f2 |
126 * | \ |
127 * | f1 \|
128 * p3-----p4
129 */
130
131 p4 = rowOffset + x;
132 p3 = p4 - 1;
133
134 p2 = p4 - numXElements;
135 p1 = p3 - numXElements;
136
137 Coord c = new Coord(xBegin + x * xStep, yBegin + y * yStep, zMap[y, x]);
138 this.coords.Add(c);
139 if (viewerMode)
140 {
141 this.normals.Add(new Coord());
142 this.uvs.Add(new UVCoord(uStep * x, 1.0f - vStep * y));
143 }
144
145 if (y > 0 && x > 0)
146 {
147 Face f1, f2;
148
149 if (viewerMode)
150 {
151 f1 = new Face(p1, p4, p3, p1, p4, p3);
152 f1.uv1 = p1;
153 f1.uv2 = p4;
154 f1.uv3 = p3;
155
156 f2 = new Face(p1, p2, p4, p1, p2, p4);
157 f2.uv1 = p1;
158 f2.uv2 = p2;
159 f2.uv3 = p4;
160 }
161 else
162 {
163 f1 = new Face(p1, p4, p3);
164 f2 = new Face(p1, p2, p4);
165 }
166
167 this.faces.Add(f1);
168 this.faces.Add(f2);
169 }
170 }
171 }
172
173 if (viewerMode)
174 calcVertexNormals(SculptType.plane, numXElements, numYElements);
175 }
176
177#if SYSTEM_DRAWING
178 public SculptMesh(Bitmap sculptBitmap, SculptType sculptType, int lod, bool viewerMode)
179 {
180 _SculptMesh(sculptBitmap, sculptType, lod, viewerMode, false, false);
181 }
182
183 public SculptMesh(Bitmap sculptBitmap, SculptType sculptType, int lod, bool viewerMode, bool mirror, bool invert)
184 {
185 _SculptMesh(sculptBitmap, sculptType, lod, viewerMode, mirror, invert);
186 }
187#endif
188
189 public SculptMesh(List<List<Coord>> rows, SculptType sculptType, bool viewerMode, bool mirror, bool invert)
190 {
191 _SculptMesh(rows, sculptType, viewerMode, mirror, invert);
192 }
193
194#if SYSTEM_DRAWING
195 /// <summary>
196 /// converts a bitmap to a list of lists of coords, while scaling the image.
197 /// the scaling is done in floating point so as to allow for reduced vertex position
198 /// quantization as the position will be averaged between pixel values. this routine will
199 /// likely fail if the bitmap width and height are not powers of 2.
200 /// </summary>
201 /// <param name="bitmap"></param>
202 /// <param name="scale"></param>
203 /// <param name="mirror"></param>
204 /// <returns></returns>
205 private List<List<Coord>> bitmap2Coords(Bitmap bitmap, int scale, bool mirror)
206 {
207 int numRows = bitmap.Height / scale;
208 int numCols = bitmap.Width / scale;
209 List<List<Coord>> rows = new List<List<Coord>>(numRows);
210
211 float pixScale = 1.0f / (scale * scale);
212 pixScale /= 255;
213
214 int imageX, imageY = 0;
215
216 int rowNdx, colNdx;
217
218 for (rowNdx = 0; rowNdx < numRows; rowNdx++)
219 {
220 List<Coord> row = new List<Coord>(numCols);
221 for (colNdx = 0; colNdx < numCols; colNdx++)
222 {
223 imageX = colNdx * scale;
224 int imageYStart = rowNdx * scale;
225 int imageYEnd = imageYStart + scale;
226 int imageXEnd = imageX + scale;
227 float rSum = 0.0f;
228 float gSum = 0.0f;
229 float bSum = 0.0f;
230 for (; imageX < imageXEnd; imageX++)
231 {
232 for (imageY = imageYStart; imageY < imageYEnd; imageY++)
233 {
234 Color c = bitmap.GetPixel(imageX, imageY);
235 if (c.A != 255)
236 {
237 bitmap.SetPixel(imageX, imageY, Color.FromArgb(255, c.R, c.G, c.B));
238 c = bitmap.GetPixel(imageX, imageY);
239 }
240 rSum += c.R;
241 gSum += c.G;
242 bSum += c.B;
243 }
244 }
245 if (mirror)
246 row.Add(new Coord(-(rSum * pixScale - 0.5f), gSum * pixScale - 0.5f, bSum * pixScale - 0.5f));
247 else
248 row.Add(new Coord(rSum * pixScale - 0.5f, gSum * pixScale - 0.5f, bSum * pixScale - 0.5f));
249
250 }
251 rows.Add(row);
252 }
253 return rows;
254 }
255
256 private List<List<Coord>> bitmap2CoordsSampled(Bitmap bitmap, int scale, bool mirror)
257 {
258 int numRows = bitmap.Height / scale;
259 int numCols = bitmap.Width / scale;
260 List<List<Coord>> rows = new List<List<Coord>>(numRows);
261
262 float pixScale = 1.0f / 256.0f;
263
264 int imageX, imageY = 0;
265
266 int rowNdx, colNdx;
267
268 for (rowNdx = 0; rowNdx <= numRows; rowNdx++)
269 {
270 List<Coord> row = new List<Coord>(numCols);
271 imageY = rowNdx * scale;
272 if (rowNdx == numRows) imageY--;
273 for (colNdx = 0; colNdx <= numCols; colNdx++)
274 {
275 imageX = colNdx * scale;
276 if (colNdx == numCols) imageX--;
277
278 Color c = bitmap.GetPixel(imageX, imageY);
279 if (c.A != 255)
280 {
281 bitmap.SetPixel(imageX, imageY, Color.FromArgb(255, c.R, c.G, c.B));
282 c = bitmap.GetPixel(imageX, imageY);
283 }
284
285 if (mirror)
286 row.Add(new Coord(-(c.R * pixScale - 0.5f), c.G * pixScale - 0.5f, c.B * pixScale - 0.5f));
287 else
288 row.Add(new Coord(c.R * pixScale - 0.5f, c.G * pixScale - 0.5f, c.B * pixScale - 0.5f));
289
290 }
291 rows.Add(row);
292 }
293 return rows;
294 }
295
296
297 void _SculptMesh(Bitmap sculptBitmap, SculptType sculptType, int lod, bool viewerMode, bool mirror, bool invert)
298 {
299 _SculptMesh(new SculptMap(sculptBitmap, lod).ToRows(mirror), sculptType, viewerMode, mirror, invert);
300 }
301#endif
302
303 void _SculptMesh(List<List<Coord>> rows, SculptType sculptType, bool viewerMode, bool mirror, bool invert)
304 {
305 coords = new List<Coord>();
306 faces = new List<Face>();
307 normals = new List<Coord>();
308 uvs = new List<UVCoord>();
309
310 sculptType = (SculptType)(((int)sculptType) & 0x07);
311
312 if (mirror)
313 invert = !invert;
314
315 viewerFaces = new List<ViewerFace>();
316
317 int width = rows[0].Count;
318
319 int p1, p2, p3, p4;
320
321 int imageX, imageY;
322
323 if (sculptType != SculptType.plane)
324 {
325 if (rows.Count % 2 == 0)
326 {
327 for (int rowNdx = 0; rowNdx < rows.Count; rowNdx++)
328 rows[rowNdx].Add(rows[rowNdx][0]);
329 }
330 else
331 {
332 int lastIndex = rows[0].Count - 1;
333
334 for (int i = 0; i < rows.Count; i++)
335 rows[i][0] = rows[i][lastIndex];
336 }
337 }
338
339 Coord topPole = rows[0][width / 2];
340 Coord bottomPole = rows[rows.Count - 1][width / 2];
341
342 if (sculptType == SculptType.sphere)
343 {
344 if (rows.Count % 2 == 0)
345 {
346 int count = rows[0].Count;
347 List<Coord> topPoleRow = new List<Coord>(count);
348 List<Coord> bottomPoleRow = new List<Coord>(count);
349
350 for (int i = 0; i < count; i++)
351 {
352 topPoleRow.Add(topPole);
353 bottomPoleRow.Add(bottomPole);
354 }
355 rows.Insert(0, topPoleRow);
356 rows.Add(bottomPoleRow);
357 }
358 else
359 {
360 int count = rows[0].Count;
361
362 List<Coord> topPoleRow = rows[0];
363 List<Coord> bottomPoleRow = rows[rows.Count - 1];
364
365 for (int i = 0; i < count; i++)
366 {
367 topPoleRow[i] = topPole;
368 bottomPoleRow[i] = bottomPole;
369 }
370 }
371 }
372
373 if (sculptType == SculptType.torus)
374 rows.Add(rows[0]);
375
376 int coordsDown = rows.Count;
377 int coordsAcross = rows[0].Count;
378// int lastColumn = coordsAcross - 1;
379
380 float widthUnit = 1.0f / (coordsAcross - 1);
381 float heightUnit = 1.0f / (coordsDown - 1);
382
383 for (imageY = 0; imageY < coordsDown; imageY++)
384 {
385 int rowOffset = imageY * coordsAcross;
386
387 for (imageX = 0; imageX < coordsAcross; imageX++)
388 {
389 /*
390 * p1-----p2
391 * | \ f2 |
392 * | \ |
393 * | f1 \|
394 * p3-----p4
395 */
396
397 p4 = rowOffset + imageX;
398 p3 = p4 - 1;
399
400 p2 = p4 - coordsAcross;
401 p1 = p3 - coordsAcross;
402
403 this.coords.Add(rows[imageY][imageX]);
404 if (viewerMode)
405 {
406 this.normals.Add(new Coord());
407 this.uvs.Add(new UVCoord(widthUnit * imageX, heightUnit * imageY));
408 }
409
410 if (imageY > 0 && imageX > 0)
411 {
412 Face f1, f2;
413
414 if (viewerMode)
415 {
416 if (invert)
417 {
418 f1 = new Face(p1, p4, p3, p1, p4, p3);
419 f1.uv1 = p1;
420 f1.uv2 = p4;
421 f1.uv3 = p3;
422
423 f2 = new Face(p1, p2, p4, p1, p2, p4);
424 f2.uv1 = p1;
425 f2.uv2 = p2;
426 f2.uv3 = p4;
427 }
428 else
429 {
430 f1 = new Face(p1, p3, p4, p1, p3, p4);
431 f1.uv1 = p1;
432 f1.uv2 = p3;
433 f1.uv3 = p4;
434
435 f2 = new Face(p1, p4, p2, p1, p4, p2);
436 f2.uv1 = p1;
437 f2.uv2 = p4;
438 f2.uv3 = p2;
439 }
440 }
441 else
442 {
443 if (invert)
444 {
445 f1 = new Face(p1, p4, p3);
446 f2 = new Face(p1, p2, p4);
447 }
448 else
449 {
450 f1 = new Face(p1, p3, p4);
451 f2 = new Face(p1, p4, p2);
452 }
453 }
454
455 this.faces.Add(f1);
456 this.faces.Add(f2);
457 }
458 }
459 }
460
461 if (viewerMode)
462 calcVertexNormals(sculptType, coordsAcross, coordsDown);
463 }
464
465 /// <summary>
466 /// Duplicates a SculptMesh object. All object properties are copied by value, including lists.
467 /// </summary>
468 /// <returns></returns>
469 public SculptMesh Copy()
470 {
471 return new SculptMesh(this);
472 }
473
474 public SculptMesh(SculptMesh sm)
475 {
476 coords = new List<Coord>(sm.coords);
477 faces = new List<Face>(sm.faces);
478 viewerFaces = new List<ViewerFace>(sm.viewerFaces);
479 normals = new List<Coord>(sm.normals);
480 uvs = new List<UVCoord>(sm.uvs);
481 }
482
483 private void calcVertexNormals(SculptType sculptType, int xSize, int ySize)
484 { // compute vertex normals by summing all the surface normals of all the triangles sharing
485 // each vertex and then normalizing
486 int numFaces = this.faces.Count;
487 for (int i = 0; i < numFaces; i++)
488 {
489 Face face = this.faces[i];
490 Coord surfaceNormal = face.SurfaceNormal(this.coords);
491 this.normals[face.n1] += surfaceNormal;
492 this.normals[face.n2] += surfaceNormal;
493 this.normals[face.n3] += surfaceNormal;
494 }
495
496 int numNormals = this.normals.Count;
497 for (int i = 0; i < numNormals; i++)
498 this.normals[i] = this.normals[i].Normalize();
499
500 if (sculptType != SculptType.plane)
501 { // blend the vertex normals at the cylinder seam
502 for (int y = 0; y < ySize; y++)
503 {
504 int rowOffset = y * xSize;
505
506 this.normals[rowOffset] = this.normals[rowOffset + xSize - 1] = (this.normals[rowOffset] + this.normals[rowOffset + xSize - 1]).Normalize();
507 }
508 }
509
510 foreach (Face face in this.faces)
511 {
512 ViewerFace vf = new ViewerFace(0);
513 vf.v1 = this.coords[face.v1];
514 vf.v2 = this.coords[face.v2];
515 vf.v3 = this.coords[face.v3];
516
517 vf.coordIndex1 = face.v1;
518 vf.coordIndex2 = face.v2;
519 vf.coordIndex3 = face.v3;
520
521 vf.n1 = this.normals[face.n1];
522 vf.n2 = this.normals[face.n2];
523 vf.n3 = this.normals[face.n3];
524
525 vf.uv1 = this.uvs[face.uv1];
526 vf.uv2 = this.uvs[face.uv2];
527 vf.uv3 = this.uvs[face.uv3];
528
529 this.viewerFaces.Add(vf);
530 }
531 }
532
533 /// <summary>
534 /// Adds a value to each XYZ vertex coordinate in the mesh
535 /// </summary>
536 /// <param name="x"></param>
537 /// <param name="y"></param>
538 /// <param name="z"></param>
539 public void AddPos(float x, float y, float z)
540 {
541 int i;
542 int numVerts = this.coords.Count;
543 Coord vert;
544
545 for (i = 0; i < numVerts; i++)
546 {
547 vert = this.coords[i];
548 vert.X += x;
549 vert.Y += y;
550 vert.Z += z;
551 this.coords[i] = vert;
552 }
553
554 if (this.viewerFaces != null)
555 {
556 int numViewerFaces = this.viewerFaces.Count;
557
558 for (i = 0; i < numViewerFaces; i++)
559 {
560 ViewerFace v = this.viewerFaces[i];
561 v.AddPos(x, y, z);
562 this.viewerFaces[i] = v;
563 }
564 }
565 }
566
567 /// <summary>
568 /// Rotates the mesh
569 /// </summary>
570 /// <param name="q"></param>
571 public void AddRot(Quat q)
572 {
573 int i;
574 int numVerts = this.coords.Count;
575
576 for (i = 0; i < numVerts; i++)
577 this.coords[i] *= q;
578
579 int numNormals = this.normals.Count;
580 for (i = 0; i < numNormals; i++)
581 this.normals[i] *= q;
582
583 if (this.viewerFaces != null)
584 {
585 int numViewerFaces = this.viewerFaces.Count;
586
587 for (i = 0; i < numViewerFaces; i++)
588 {
589 ViewerFace v = this.viewerFaces[i];
590 v.v1 *= q;
591 v.v2 *= q;
592 v.v3 *= q;
593
594 v.n1 *= q;
595 v.n2 *= q;
596 v.n3 *= q;
597
598 this.viewerFaces[i] = v;
599 }
600 }
601 }
602
603 public void Scale(float x, float y, float z)
604 {
605 int i;
606 int numVerts = this.coords.Count;
607
608 Coord m = new Coord(x, y, z);
609 for (i = 0; i < numVerts; i++)
610 this.coords[i] *= m;
611
612 if (this.viewerFaces != null)
613 {
614 int numViewerFaces = this.viewerFaces.Count;
615 for (i = 0; i < numViewerFaces; i++)
616 {
617 ViewerFace v = this.viewerFaces[i];
618 v.v1 *= m;
619 v.v2 *= m;
620 v.v3 *= m;
621 this.viewerFaces[i] = v;
622 }
623 }
624 }
625
626 public void DumpRaw(String path, String name, String title)
627 {
628 if (path == null)
629 return;
630 String fileName = name + "_" + title + ".raw";
631 String completePath = System.IO.Path.Combine(path, fileName);
632 StreamWriter sw = new StreamWriter(completePath);
633
634 for (int i = 0; i < this.faces.Count; i++)
635 {
636 string s = this.coords[this.faces[i].v1].ToString();
637 s += " " + this.coords[this.faces[i].v2].ToString();
638 s += " " + this.coords[this.faces[i].v3].ToString();
639
640 sw.WriteLine(s);
641 }
642
643 sw.Close();
644 }
645 }
646}
generated by cgit v1.1 at 2024-12-22 06:18:17 +0000