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Diffstat (limited to 'OpenSim/Region/CoreModules/World/Terrain/FileLoaders/LLRAW.cs')
-rw-r--r-- | OpenSim/Region/CoreModules/World/Terrain/FileLoaders/LLRAW.cs | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/LLRAW.cs b/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/LLRAW.cs new file mode 100644 index 0000000..a86ae00 --- /dev/null +++ b/OpenSim/Region/CoreModules/World/Terrain/FileLoaders/LLRAW.cs | |||
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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 OpenSim 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 | using System; | ||
29 | using System.IO; | ||
30 | using OpenSim.Region.Framework.Interfaces; | ||
31 | using OpenSim.Region.Framework.Scenes; | ||
32 | |||
33 | namespace OpenSim.Region.CoreModules.World.Terrain.FileLoaders | ||
34 | { | ||
35 | public class LLRAW : ITerrainLoader | ||
36 | { | ||
37 | public struct HeightmapLookupValue : IComparable<HeightmapLookupValue> | ||
38 | { | ||
39 | public int Index; | ||
40 | public double Value; | ||
41 | |||
42 | public HeightmapLookupValue(int index, double value) | ||
43 | { | ||
44 | Index = index; | ||
45 | Value = value; | ||
46 | } | ||
47 | |||
48 | public int CompareTo(HeightmapLookupValue val) | ||
49 | { | ||
50 | return Value.CompareTo(val.Value); | ||
51 | } | ||
52 | } | ||
53 | |||
54 | /// <summary>Lookup table to speed up terrain exports</summary> | ||
55 | HeightmapLookupValue[] LookupHeightTable; | ||
56 | |||
57 | public LLRAW() | ||
58 | { | ||
59 | LookupHeightTable = new HeightmapLookupValue[256 * 256]; | ||
60 | |||
61 | for (int i = 0; i < 256; i++) | ||
62 | { | ||
63 | for (int j = 0; j < 256; j++) | ||
64 | { | ||
65 | LookupHeightTable[i + (j * 256)] = new HeightmapLookupValue(i + (j * 256), ((double)i * ((double)j / 128.0d))); | ||
66 | } | ||
67 | } | ||
68 | Array.Sort<HeightmapLookupValue>(LookupHeightTable); | ||
69 | } | ||
70 | |||
71 | #region ITerrainLoader Members | ||
72 | |||
73 | public ITerrainChannel LoadFile(string filename) | ||
74 | { | ||
75 | FileInfo file = new FileInfo(filename); | ||
76 | FileStream s = file.Open(FileMode.Open, FileAccess.Read); | ||
77 | ITerrainChannel retval = LoadStream(s); | ||
78 | |||
79 | s.Close(); | ||
80 | |||
81 | return retval; | ||
82 | } | ||
83 | |||
84 | public ITerrainChannel LoadFile(string filename, int offsetX, int offsetY, int fileWidth, int fileHeight, int sectionWidth, int sectionHeight) | ||
85 | { | ||
86 | TerrainChannel retval = new TerrainChannel(sectionWidth, sectionHeight); | ||
87 | |||
88 | FileInfo file = new FileInfo(filename); | ||
89 | FileStream s = file.Open(FileMode.Open, FileAccess.Read); | ||
90 | BinaryReader bs = new BinaryReader(s); | ||
91 | |||
92 | int currFileYOffset = fileHeight - 1; | ||
93 | |||
94 | // if our region isn't on the first Y section of the areas to be landscaped, then | ||
95 | // advance to our section of the file | ||
96 | while (currFileYOffset > offsetY) | ||
97 | { | ||
98 | // read a whole strip of regions | ||
99 | int heightsToRead = sectionHeight * (fileWidth * sectionWidth); | ||
100 | bs.ReadBytes(heightsToRead * 13); // because there are 13 fun channels | ||
101 | currFileYOffset--; | ||
102 | } | ||
103 | |||
104 | // got to the Y start offset within the file of our region | ||
105 | // so read the file bits associated with our region | ||
106 | int y; | ||
107 | // for each Y within our Y offset | ||
108 | for (y = sectionHeight - 1; y >= 0; y--) | ||
109 | { | ||
110 | int currFileXOffset = 0; | ||
111 | |||
112 | // if our region isn't the first X section of the areas to be landscaped, then | ||
113 | // advance the stream to the X start pos of our section in the file | ||
114 | // i.e. eat X upto where we start | ||
115 | while (currFileXOffset < offsetX) | ||
116 | { | ||
117 | bs.ReadBytes(sectionWidth * 13); | ||
118 | currFileXOffset++; | ||
119 | } | ||
120 | |||
121 | // got to our X offset, so write our regions X line | ||
122 | int x; | ||
123 | for (x = 0; x < sectionWidth; x++) | ||
124 | { | ||
125 | // Read a strip and continue | ||
126 | retval[x, y] = bs.ReadByte() * (bs.ReadByte() / 128.0); | ||
127 | bs.ReadBytes(11); | ||
128 | } | ||
129 | // record that we wrote it | ||
130 | currFileXOffset++; | ||
131 | |||
132 | // if our region isn't the last X section of the areas to be landscaped, then | ||
133 | // advance the stream to the end of this Y column | ||
134 | while (currFileXOffset < fileWidth) | ||
135 | { | ||
136 | // eat the next regions x line | ||
137 | bs.ReadBytes(sectionWidth * 13); //The 13 channels again | ||
138 | currFileXOffset++; | ||
139 | } | ||
140 | } | ||
141 | |||
142 | bs.Close(); | ||
143 | s.Close(); | ||
144 | |||
145 | return retval; | ||
146 | } | ||
147 | |||
148 | public ITerrainChannel LoadStream(Stream s) | ||
149 | { | ||
150 | TerrainChannel retval = new TerrainChannel(); | ||
151 | |||
152 | BinaryReader bs = new BinaryReader(s); | ||
153 | int y; | ||
154 | for (y = 0; y < retval.Height; y++) | ||
155 | { | ||
156 | int x; | ||
157 | for (x = 0; x < retval.Width; x++) | ||
158 | { | ||
159 | retval[x, (retval.Height - 1) - y] = bs.ReadByte() * (bs.ReadByte() / 128.0); | ||
160 | bs.ReadBytes(11); // Advance the stream to next bytes. | ||
161 | } | ||
162 | } | ||
163 | |||
164 | bs.Close(); | ||
165 | |||
166 | return retval; | ||
167 | } | ||
168 | |||
169 | public void SaveFile(string filename, ITerrainChannel map) | ||
170 | { | ||
171 | FileInfo file = new FileInfo(filename); | ||
172 | FileStream s = file.Open(FileMode.CreateNew, FileAccess.Write); | ||
173 | SaveStream(s, map); | ||
174 | |||
175 | s.Close(); | ||
176 | } | ||
177 | |||
178 | public void SaveStream(Stream s, ITerrainChannel map) | ||
179 | { | ||
180 | BinaryWriter binStream = new BinaryWriter(s); | ||
181 | |||
182 | // Output the calculated raw | ||
183 | for (int y = 0; y < map.Height; y++) | ||
184 | { | ||
185 | for (int x = 0; x < map.Width; x++) | ||
186 | { | ||
187 | double t = map[x, (map.Height - 1) - y]; | ||
188 | //if height is less than 0, set it to 0 as | ||
189 | //can't save -ve values in a LLRAW file | ||
190 | if (t < 0d) | ||
191 | { | ||
192 | t = 0d; | ||
193 | } | ||
194 | |||
195 | int index = 0; | ||
196 | |||
197 | // The lookup table is pre-sorted, so we either find an exact match or | ||
198 | // the next closest (smaller) match with a binary search | ||
199 | index = Array.BinarySearch<HeightmapLookupValue>(LookupHeightTable, new HeightmapLookupValue(0, t)); | ||
200 | if (index < 0) | ||
201 | index = ~index - 1; | ||
202 | |||
203 | index = LookupHeightTable[index].Index; | ||
204 | |||
205 | byte red = (byte) (index & 0xFF); | ||
206 | byte green = (byte) ((index >> 8) & 0xFF); | ||
207 | const byte blue = 20; | ||
208 | const byte alpha1 = 0; | ||
209 | const byte alpha2 = 0; | ||
210 | const byte alpha3 = 0; | ||
211 | const byte alpha4 = 0; | ||
212 | const byte alpha5 = 255; | ||
213 | const byte alpha6 = 255; | ||
214 | const byte alpha7 = 255; | ||
215 | const byte alpha8 = 255; | ||
216 | byte alpha9 = red; | ||
217 | byte alpha10 = green; | ||
218 | |||
219 | binStream.Write(red); | ||
220 | binStream.Write(green); | ||
221 | binStream.Write(blue); | ||
222 | binStream.Write(alpha1); | ||
223 | binStream.Write(alpha2); | ||
224 | binStream.Write(alpha3); | ||
225 | binStream.Write(alpha4); | ||
226 | binStream.Write(alpha5); | ||
227 | binStream.Write(alpha6); | ||
228 | binStream.Write(alpha7); | ||
229 | binStream.Write(alpha8); | ||
230 | binStream.Write(alpha9); | ||
231 | binStream.Write(alpha10); | ||
232 | } | ||
233 | } | ||
234 | |||
235 | binStream.Close(); | ||
236 | } | ||
237 | |||
238 | public string FileExtension | ||
239 | { | ||
240 | get { return ".raw"; } | ||
241 | } | ||
242 | |||
243 | #endregion | ||
244 | |||
245 | public override string ToString() | ||
246 | { | ||
247 | return "LL/SL RAW"; | ||
248 | } | ||
249 | } | ||
250 | } | ||