opensim – Blame information for rev 1
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1 | eva | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.IO; |
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30 | |||
31 | using OpenSim.Framework; |
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32 | using OpenSim.Region.Framework.Interfaces; |
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33 | using OpenSim.Region.Framework.Scenes; |
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34 | |||
35 | namespace OpenSim.Region.CoreModules.World.Terrain.FileLoaders |
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36 | { |
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37 | public class RAW32 : ITerrainLoader |
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38 | { |
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39 | #region ITerrainLoader Members |
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40 | |||
41 | public string FileExtension |
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42 | { |
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43 | get { return ".r32"; } |
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44 | } |
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45 | |||
46 | public ITerrainChannel LoadFile(string filename) |
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47 | { |
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48 | FileInfo file = new FileInfo(filename); |
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49 | FileStream s = file.Open(FileMode.Open, FileAccess.Read); |
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50 | ITerrainChannel retval = LoadStream(s); |
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51 | |||
52 | s.Close(); |
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53 | |||
54 | return retval; |
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55 | } |
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56 | |||
57 | public ITerrainChannel LoadFile(string filename, int offsetX, int offsetY, int fileWidth, int fileHeight, int sectionWidth, int sectionHeight) |
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58 | { |
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59 | TerrainChannel retval = new TerrainChannel(sectionWidth, sectionHeight); |
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60 | |||
61 | FileInfo file = new FileInfo(filename); |
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62 | FileStream s = file.Open(FileMode.Open, FileAccess.Read); |
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63 | BinaryReader bs = new BinaryReader(s); |
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64 | |||
65 | int currFileYOffset = 0; |
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66 | |||
67 | // if our region isn't on the first Y section of the areas to be landscaped, then |
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68 | // advance to our section of the file |
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69 | while (currFileYOffset < offsetY) |
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70 | { |
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71 | // read a whole strip of regions |
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72 | int heightsToRead = sectionHeight * (fileWidth * sectionWidth); |
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73 | bs.ReadBytes(heightsToRead * 4); // because the floats are 4 bytes in the file |
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74 | currFileYOffset++; |
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75 | } |
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76 | |||
77 | // got to the Y start offset within the file of our region |
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78 | // so read the file bits associated with our region |
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79 | int y; |
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80 | // for each Y within our Y offset |
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81 | for (y = 0; y < sectionHeight; y++) |
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82 | { |
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83 | int currFileXOffset = 0; |
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84 | |||
85 | // if our region isn't the first X section of the areas to be landscaped, then |
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86 | // advance the stream to the X start pos of our section in the file |
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87 | // i.e. eat X upto where we start |
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88 | while (currFileXOffset < offsetX) |
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89 | { |
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90 | bs.ReadBytes(sectionWidth * 4); // 4 bytes = single |
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91 | currFileXOffset++; |
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92 | } |
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93 | |||
94 | // got to our X offset, so write our regions X line |
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95 | int x; |
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96 | for (x = 0; x < sectionWidth; x++) |
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97 | { |
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98 | // Read a strip and continue |
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99 | retval[x, y] = bs.ReadSingle(); |
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100 | } |
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101 | // record that we wrote it |
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102 | currFileXOffset++; |
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103 | |||
104 | // if our region isn't the last X section of the areas to be landscaped, then |
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105 | // advance the stream to the end of this Y column |
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106 | while (currFileXOffset < fileWidth) |
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107 | { |
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108 | // eat the next regions x line |
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109 | bs.ReadBytes(sectionWidth * 4); // 4 bytes = single |
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110 | currFileXOffset++; |
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111 | } |
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112 | } |
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113 | |||
114 | bs.Close(); |
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115 | s.Close(); |
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116 | |||
117 | return retval; |
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118 | } |
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119 | |||
120 | public ITerrainChannel LoadStream(Stream s) |
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121 | { |
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122 | // The raw format doesn't contain any dimension information. |
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123 | // Guess the square dimensions by using the length of the raw file. |
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124 | double dimension = Math.Sqrt((double)(s.Length / 4)); |
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125 | // Regions are always multiples of 256. |
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126 | int trimmedDimension = (int)dimension - ((int)dimension % (int)Constants.RegionSize); |
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127 | if (trimmedDimension < Constants.RegionSize) |
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128 | trimmedDimension = (int)Constants.RegionSize; |
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129 | |||
130 | TerrainChannel retval = new TerrainChannel(trimmedDimension, trimmedDimension); |
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131 | |||
132 | BinaryReader bs = new BinaryReader(s); |
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133 | int y; |
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134 | for (y = 0; y < retval.Height; y++) |
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135 | { |
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136 | int x; |
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137 | for (x = 0; x < retval.Width; x++) |
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138 | { |
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139 | retval[x, y] = bs.ReadSingle(); |
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140 | } |
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141 | } |
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142 | |||
143 | bs.Close(); |
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144 | |||
145 | return retval; |
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146 | } |
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147 | |||
148 | public void SaveFile(string filename, ITerrainChannel map) |
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149 | { |
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150 | FileInfo file = new FileInfo(filename); |
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151 | FileStream s = file.Open(FileMode.Create, FileAccess.Write); |
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152 | SaveStream(s, map); |
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153 | |||
154 | s.Close(); |
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155 | } |
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156 | |||
157 | public void SaveStream(Stream s, ITerrainChannel map) |
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158 | { |
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159 | BinaryWriter bs = new BinaryWriter(s); |
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160 | |||
161 | int y; |
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162 | for (y = 0; y < map.Height; y++) |
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163 | { |
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164 | int x; |
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165 | for (x = 0; x < map.Width; x++) |
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166 | { |
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167 | bs.Write((float) map[x, y]); |
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168 | } |
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169 | } |
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170 | |||
171 | bs.Close(); |
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172 | } |
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173 | |||
174 | public virtual void SaveFile(ITerrainChannel m_channel, string filename, |
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175 | int offsetX, int offsetY, |
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176 | int fileWidth, int fileHeight, |
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177 | int regionSizeX, int regionSizeY) |
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178 | { |
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179 | throw new System.Exception("Not Implemented"); |
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180 | } |
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181 | #endregion |
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182 | |||
183 | public override string ToString() |
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184 | { |
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185 | return "RAW32"; |
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186 | } |
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187 | |||
188 | //Returns true if this extension is supported for terrain save-tile |
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189 | public bool SupportsTileSave() |
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190 | { |
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191 | return false; |
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192 | } |
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193 | } |
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194 | } |