clockwerk-opensim-stable – Blame information for rev 1
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1 | vero | 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.Drawing; |
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30 | using System.Drawing.Imaging; |
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31 | using System.IO; |
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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 | /// <summary> |
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38 | /// A virtual class designed to have methods overloaded, |
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39 | /// this class provides an interface for a generic image |
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40 | /// saving and loading mechanism, but does not specify the |
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41 | /// format. It should not be insubstantiated directly. |
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42 | /// </summary> |
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43 | public class GenericSystemDrawing : ITerrainLoader |
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44 | { |
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45 | #region ITerrainLoader Members |
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46 | |||
47 | public string FileExtension |
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48 | { |
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49 | get { return ".gsd"; } |
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50 | } |
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51 | |||
52 | /// <summary> |
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53 | /// Loads a file from a specified filename on the disk, |
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54 | /// parses the image using the System.Drawing parsers |
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55 | /// then returns a terrain channel. Values are |
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56 | /// returned based on HSL brightness between 0m and 128m |
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57 | /// </summary> |
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58 | /// <param name="filename">The target image to load</param> |
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59 | /// <returns>A terrain channel generated from the image.</returns> |
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60 | public virtual ITerrainChannel LoadFile(string filename) |
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61 | { |
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62 | using (Bitmap b = new Bitmap(filename)) |
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63 | return LoadBitmap(b); |
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64 | } |
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65 | |||
66 | public virtual ITerrainChannel LoadFile(string filename, int offsetX, int offsetY, int fileWidth, int fileHeight, int w, int h) |
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67 | { |
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68 | using (Bitmap bitmap = new Bitmap(filename)) |
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69 | { |
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70 | ITerrainChannel retval = new TerrainChannel(true); |
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71 | |||
72 | for (int x = 0; x < retval.Width; x++) |
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73 | { |
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74 | for (int y = 0; y < retval.Height; y++) |
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75 | { |
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76 | retval[x, y] = bitmap.GetPixel(offsetX * retval.Width + x, (bitmap.Height - (retval.Height * (offsetY + 1))) + retval.Height - y - 1).GetBrightness() * 128; |
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77 | } |
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78 | } |
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79 | |||
80 | return retval; |
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81 | } |
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82 | } |
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83 | |||
84 | public virtual ITerrainChannel LoadStream(Stream stream) |
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85 | { |
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86 | using (Bitmap b = new Bitmap(stream)) |
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87 | return LoadBitmap(b); |
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88 | } |
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89 | |||
90 | protected virtual ITerrainChannel LoadBitmap(Bitmap bitmap) |
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91 | { |
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92 | ITerrainChannel retval = new TerrainChannel(bitmap.Width, bitmap.Height); |
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93 | |||
94 | int x; |
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95 | for (x = 0; x < bitmap.Width; x++) |
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96 | { |
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97 | int y; |
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98 | for (y = 0; y < bitmap.Height; y++) |
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99 | { |
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100 | retval[x, y] = bitmap.GetPixel(x, bitmap.Height - y - 1).GetBrightness() * 128; |
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101 | } |
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102 | } |
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103 | |||
104 | return retval; |
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105 | } |
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106 | |||
107 | /// <summary> |
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108 | /// Exports a file to a image on the disk using a System.Drawing exporter. |
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109 | /// </summary> |
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110 | /// <param name="filename">The target filename</param> |
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111 | /// <param name="map">The terrain channel being saved</param> |
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112 | public virtual void SaveFile(string filename, ITerrainChannel map) |
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113 | { |
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114 | Bitmap colours = CreateGrayscaleBitmapFromMap(map); |
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115 | |||
116 | colours.Save(filename, ImageFormat.Png); |
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117 | } |
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118 | |||
119 | /// <summary> |
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120 | /// Exports a stream using a System.Drawing exporter. |
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121 | /// </summary> |
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122 | /// <param name="stream">The target stream</param> |
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123 | /// <param name="map">The terrain channel being saved</param> |
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124 | public virtual void SaveStream(Stream stream, ITerrainChannel map) |
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125 | { |
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126 | Bitmap colours = CreateGrayscaleBitmapFromMap(map); |
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127 | |||
128 | colours.Save(stream, ImageFormat.Png); |
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129 | } |
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130 | |||
131 | public virtual void SaveFile(ITerrainChannel m_channel, string filename, |
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132 | int offsetX, int offsetY, |
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133 | int fileWidth, int fileHeight, |
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134 | int regionSizeX, int regionSizeY) |
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135 | |||
136 | { |
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137 | // We need to do this because: |
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138 | // "Saving the image to the same file it was constructed from is not allowed and throws an exception." |
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139 | string tempName = Path.GetTempFileName(); |
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140 | |||
141 | Bitmap existingBitmap = null; |
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142 | Bitmap thisBitmap = null; |
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143 | Bitmap newBitmap = null; |
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144 | |||
145 | try |
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146 | { |
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147 | if (File.Exists(filename)) |
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148 | { |
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149 | File.Copy(filename, tempName, true); |
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150 | existingBitmap = new Bitmap(tempName); |
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151 | if (existingBitmap.Width != fileWidth * regionSizeX || existingBitmap.Height != fileHeight * regionSizeY) |
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152 | { |
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153 | // old file, let's overwrite it |
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154 | newBitmap = new Bitmap(fileWidth * regionSizeX, fileHeight * regionSizeY); |
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155 | } |
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156 | else |
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157 | { |
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158 | newBitmap = existingBitmap; |
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159 | } |
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160 | } |
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161 | else |
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162 | { |
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163 | newBitmap = new Bitmap(fileWidth * regionSizeX, fileHeight * regionSizeY); |
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164 | } |
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165 | |||
166 | thisBitmap = CreateGrayscaleBitmapFromMap(m_channel); |
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167 | // Console.WriteLine("offsetX=" + offsetX + " offsetY=" + offsetY); |
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168 | for (int x = 0; x < regionSizeX; x++) |
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169 | for (int y = 0; y < regionSizeY; y++) |
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170 | newBitmap.SetPixel(x + offsetX * regionSizeX, y + (fileHeight - 1 - offsetY) * regionSizeY, thisBitmap.GetPixel(x, y)); |
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171 | |||
172 | Save(newBitmap, filename); |
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173 | } |
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174 | finally |
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175 | { |
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176 | if (existingBitmap != null) |
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177 | existingBitmap.Dispose(); |
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178 | |||
179 | if (thisBitmap != null) |
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180 | thisBitmap.Dispose(); |
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181 | |||
182 | if (newBitmap != null) |
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183 | newBitmap.Dispose(); |
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184 | |||
185 | if (File.Exists(tempName)) |
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186 | File.Delete(tempName); |
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187 | } |
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188 | } |
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189 | |||
190 | protected virtual void Save(Bitmap bmp, string filename) |
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191 | { |
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192 | bmp.Save(filename, ImageFormat.Png); |
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193 | } |
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194 | |||
195 | #endregion |
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196 | |||
197 | public override string ToString() |
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198 | { |
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199 | return "SYS.DRAWING"; |
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200 | } |
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201 | |||
202 | //Returns true if this extension is supported for terrain save-tile |
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203 | public virtual bool SupportsTileSave() |
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204 | { |
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205 | return false; |
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206 | } |
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207 | |||
208 | /// <summary> |
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209 | /// Protected method, generates a grayscale bitmap |
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210 | /// image from a specified terrain channel. |
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211 | /// </summary> |
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212 | /// <param name="map">The terrain channel to export to bitmap</param> |
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213 | /// <returns>A System.Drawing.Bitmap containing a grayscale image</returns> |
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214 | protected static Bitmap CreateGrayscaleBitmapFromMap(ITerrainChannel map) |
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215 | { |
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216 | Bitmap bmp = new Bitmap(map.Width, map.Height); |
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217 | |||
218 | const int pallete = 256; |
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219 | |||
220 | Color[] grays = new Color[pallete]; |
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221 | for (int i = 0; i < grays.Length; i++) |
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222 | { |
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223 | grays[i] = Color.FromArgb(i, i, i); |
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224 | } |
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225 | |||
226 | for (int y = 0; y < map.Height; y++) |
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227 | { |
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228 | for (int x = 0; x < map.Width; x++) |
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229 | { |
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230 | // 512 is the largest possible height before colours clamp |
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231 | int colorindex = (int) (Math.Max(Math.Min(1.0, map[x, y] / 128.0), 0.0) * (pallete - 1)); |
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232 | |||
233 | // Handle error conditions |
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234 | if (colorindex > pallete - 1 || colorindex < 0) |
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235 | bmp.SetPixel(x, map.Height - y - 1, Color.Red); |
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236 | else |
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237 | bmp.SetPixel(x, map.Height - y - 1, grays[colorindex]); |
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238 | } |
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239 | } |
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240 | return bmp; |
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241 | } |
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242 | |||
243 | /// <summary> |
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244 | /// Protected method, generates a coloured bitmap |
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245 | /// image from a specified terrain channel. |
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246 | /// </summary> |
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247 | /// <param name="map">The terrain channel to export to bitmap</param> |
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248 | /// <returns>A System.Drawing.Bitmap containing a coloured image</returns> |
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249 | protected static Bitmap CreateBitmapFromMap(ITerrainChannel map) |
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250 | { |
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251 | int pallete; |
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252 | Bitmap bmp; |
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253 | Color[] colours; |
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254 | |||
255 | using (Bitmap gradientmapLd = new Bitmap("defaultstripe.png")) |
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256 | { |
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257 | pallete = gradientmapLd.Height; |
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258 | |||
259 | bmp = new Bitmap(map.Width, map.Height); |
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260 | colours = new Color[pallete]; |
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261 | |||
262 | for (int i = 0; i < pallete; i++) |
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263 | { |
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264 | colours[i] = gradientmapLd.GetPixel(0, i); |
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265 | } |
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266 | } |
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267 | |||
268 | for (int y = 0; y < map.Height; y++) |
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269 | { |
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270 | for (int x = 0; x < map.Width; x++) |
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271 | { |
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272 | // 512 is the largest possible height before colours clamp |
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273 | int colorindex = (int) (Math.Max(Math.Min(1.0, map[x, y] / 512.0), 0.0) * (pallete - 1)); |
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274 | |||
275 | // Handle error conditions |
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276 | if (colorindex > pallete - 1 || colorindex < 0) |
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277 | bmp.SetPixel(x, map.Height - y - 1, Color.Red); |
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278 | else |
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279 | bmp.SetPixel(x, map.Height - y - 1, colours[colorindex]); |
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280 | } |
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281 | } |
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282 | return bmp; |
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283 | } |
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284 | } |
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285 | } |