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authordahlia2010-05-06 21:36:27 -0700
committerdahlia2010-05-06 21:36:27 -0700
commit5d1e9947ed43490fb458af62bd9e8596a816f7b8 (patch)
treeb89886e0faf5bd2194491669ad8a8b3c1ea340a0 /OpenSim/Region/Physics/Meshing/SculptMap.cs
parentAlso remove sale and search flags on god owner change. (diff)
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Sculpt meshing refactoring - improves mesh accuracy and UV mapping
Sync with PrimMesher r55
Diffstat (limited to '')
-rw-r--r--OpenSim/Region/Physics/Meshing/SculptMap.cs169
1 files changed, 169 insertions, 0 deletions
diff --git a/OpenSim/Region/Physics/Meshing/SculptMap.cs b/OpenSim/Region/Physics/Meshing/SculptMap.cs
new file mode 100644
index 0000000..4d3f82b
--- /dev/null
+++ b/OpenSim/Region/Physics/Meshing/SculptMap.cs
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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 * 2 * lod * 2; // (32 * 2)^2 = 64^2 pixels for default sculpt map image
62
63 width = bmW;
64 height = bmH;
65 while (width * height > numLodPixels)
66 {
67 width >>= 1;
68 height >>= 1;
69 }
70
71 width >>= 1;
72 height >>= 1;
73
74 try
75 {
76 if (!(bmW == width * 2 && bmH == height * 2))
77 bm = ScaleImage(bm, width * 2, height * 2,
78 System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor);
79 }
80
81 catch (Exception e)
82 {
83 throw new Exception("Exception in ScaleImage(): e: " + e.ToString());
84 }
85
86
87 int numBytes = (width + 1) * (height + 1);
88 redBytes = new byte[numBytes];
89 greenBytes = new byte[numBytes];
90 blueBytes = new byte[numBytes];
91
92 int byteNdx = 0;
93
94 try
95 {
96 for (int y = 0; y <= height; y++)
97 {
98 for (int x = 0; x <= width; x++)
99 {
100 int bmY = y < height ? y * 2 : y * 2 - 1;
101 int bmX = x < width ? x * 2 : x * 2 - 1;
102 Color c = bm.GetPixel(bmX, bmY);
103
104 redBytes[byteNdx] = c.R;
105 greenBytes[byteNdx] = c.G;
106 blueBytes[byteNdx] = c.B;
107
108 ++byteNdx;
109 }
110 }
111 }
112 catch (Exception e)
113 {
114 throw new Exception("Caught exception processing byte arrays in SculptMap(): e: " + e.ToString());
115 }
116
117 width++;
118 height++;
119 }
120
121 public List<List<Coord>> ToRows(bool mirror)
122 {
123 int numRows = height;
124 int numCols = width;
125
126 List<List<Coord>> rows = new List<List<Coord>>(numRows);
127
128 float pixScale = 1.0f / 255;
129
130 int rowNdx, colNdx;
131 int smNdx = 0;
132
133 for (rowNdx = 0; rowNdx < numRows; rowNdx++)
134 {
135 List<Coord> row = new List<Coord>(numCols);
136 for (colNdx = 0; colNdx < numCols; colNdx++)
137 {
138 if (mirror)
139 row.Add(new Coord(-(redBytes[smNdx] * pixScale - 0.5f), (greenBytes[smNdx] * pixScale - 0.5f), blueBytes[smNdx] * pixScale - 0.5f));
140 else
141 row.Add(new Coord(redBytes[smNdx] * pixScale - 0.5f, greenBytes[smNdx] * pixScale - 0.5f, blueBytes[smNdx] * pixScale - 0.5f));
142
143 ++smNdx;
144 }
145 rows.Add(row);
146 }
147 return rows;
148 }
149
150 private Bitmap ScaleImage(Bitmap srcImage, int destWidth, int destHeight,
151 System.Drawing.Drawing2D.InterpolationMode interpMode)
152 {
153 Bitmap scaledImage = new Bitmap(srcImage, destWidth, destHeight);
154 scaledImage.SetResolution(96.0f, 96.0f);
155
156 Graphics grPhoto = Graphics.FromImage(scaledImage);
157 grPhoto.InterpolationMode = interpMode;
158
159 grPhoto.DrawImage(srcImage,
160 new Rectangle(0, 0, destWidth, destHeight),
161 new Rectangle(0, 0, srcImage.Width, srcImage.Height),
162 GraphicsUnit.Pixel);
163
164 grPhoto.Dispose();
165 return scaledImage;
166 }
167 }
168}
169#endif
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