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-rw-r--r--OpenSim/Region/Physics/UbitMeshing/SculptMap.cs197
1 files changed, 197 insertions, 0 deletions
diff --git a/OpenSim/Region/Physics/UbitMeshing/SculptMap.cs b/OpenSim/Region/Physics/UbitMeshing/SculptMap.cs
new file mode 100644
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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 * 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