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 | using System.Text; |
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31 | using System.Reflection; |
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32 | using System.Xml; |
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33 | using System.Xml.Serialization; |
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34 | |||
35 | using OpenSim.Data; |
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36 | using OpenSim.Framework; |
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37 | using OpenSim.Region.Framework.Interfaces; |
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38 | |||
39 | using OpenMetaverse; |
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40 | |||
41 | using log4net; |
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42 | |||
43 | namespace OpenSim.Region.Framework.Scenes |
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44 | { |
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45 | /// <summary> |
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46 | /// A new version of the old Channel class, simplified |
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47 | /// </summary> |
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48 | public class TerrainChannel : ITerrainChannel |
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49 | { |
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50 | private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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51 | private static string LogHeader = "[TERRAIN CHANNEL]"; |
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52 | |||
53 | protected TerrainData m_terrainData; |
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54 | |||
55 | public int Width { get { return m_terrainData.SizeX; } } // X dimension |
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56 | // Unfortunately, for historical reasons, in this module 'Width' is X and 'Height' is Y |
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57 | public int Height { get { return m_terrainData.SizeY; } } // Y dimension |
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58 | public int Altitude { get { return m_terrainData.SizeZ; } } // Y dimension |
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59 | |||
60 | // Default, not-often-used builder |
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61 | public TerrainChannel() |
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62 | { |
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63 | m_terrainData = new HeightmapTerrainData((int)Constants.RegionSize, (int)Constants.RegionSize, (int)Constants.RegionHeight); |
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64 | FlatLand(); |
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65 | // PinHeadIsland(); |
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66 | } |
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67 | |||
68 | // Create terrain of given size |
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69 | public TerrainChannel(int pX, int pY) |
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70 | { |
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71 | m_terrainData = new HeightmapTerrainData(pX, pY, (int)Constants.RegionHeight); |
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72 | } |
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73 | |||
74 | // Create terrain of specified size and initialize with specified terrain. |
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75 | // TODO: join this with the terrain initializers. |
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76 | public TerrainChannel(String type, int pX, int pY, int pZ) |
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77 | { |
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78 | m_terrainData = new HeightmapTerrainData(pX, pY, pZ); |
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79 | if (type.Equals("flat")) |
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80 | FlatLand(); |
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81 | else |
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82 | PinHeadIsland(); |
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83 | } |
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84 | |||
85 | // Create channel passed a heightmap and expected dimensions of the region. |
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86 | // The heightmap might not fit the passed size so accomodations must be made. |
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87 | public TerrainChannel(double[,] pM, int pSizeX, int pSizeY, int pAltitude) |
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88 | { |
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89 | int hmSizeX = pM.GetLength(0); |
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90 | int hmSizeY = pM.GetLength(1); |
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91 | |||
92 | m_terrainData = new HeightmapTerrainData(pSizeX, pSizeY, pAltitude); |
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93 | |||
94 | for (int xx = 0; xx < pSizeX; xx++) |
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95 | for (int yy = 0; yy < pSizeY; yy++) |
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96 | if (xx > hmSizeX || yy > hmSizeY) |
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97 | m_terrainData[xx, yy] = TerrainData.DefaultTerrainHeight; |
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98 | else |
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99 | m_terrainData[xx, yy] = (float)pM[xx, yy]; |
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100 | } |
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101 | |||
102 | public TerrainChannel(TerrainData pTerrData) |
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103 | { |
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104 | m_terrainData = pTerrData; |
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105 | } |
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106 | |||
107 | #region ITerrainChannel Members |
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108 | |||
109 | // ITerrainChannel.MakeCopy() |
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110 | public ITerrainChannel MakeCopy() |
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111 | { |
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112 | return this.Copy(); |
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113 | } |
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114 | |||
115 | // ITerrainChannel.GetTerrainData() |
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116 | public TerrainData GetTerrainData() |
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117 | { |
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118 | return m_terrainData; |
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119 | } |
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120 | |||
121 | // ITerrainChannel.GetFloatsSerialized() |
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122 | // This one dimensional version is ordered so height = map[y*sizeX+x]; |
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123 | // DEPRECATED: don't use this function as it does not retain the dimensions of the terrain |
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124 | // and the caller will probably do the wrong thing if the terrain is not the legacy 256x256. |
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125 | public float[] GetFloatsSerialised() |
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126 | { |
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127 | int points = Width * Height; |
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128 | float[] heights = new float[points]; |
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129 | |||
130 | int idx = 0; |
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131 | for (int jj = 0; jj < Height; jj++) |
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132 | for (int ii = 0; ii < Width; ii++) |
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133 | { |
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134 | heights[idx++] = m_terrainData[ii, jj]; |
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135 | } |
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136 | |||
137 | return heights; |
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138 | } |
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139 | |||
140 | // ITerrainChannel.GetDoubles() |
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141 | public double[,] GetDoubles() |
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142 | { |
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143 | double[,] heights = new double[Width, Height]; |
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144 | |||
145 | int idx = 0; // index into serialized array |
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146 | for (int ii = 0; ii < Width; ii++) |
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147 | { |
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148 | for (int jj = 0; jj < Height; jj++) |
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149 | { |
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150 | heights[ii, jj] = (double)m_terrainData[ii, jj]; |
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151 | idx++; |
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152 | } |
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153 | } |
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154 | |||
155 | return heights; |
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156 | } |
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157 | |||
158 | // ITerrainChannel.this[x,y] |
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159 | public double this[int x, int y] |
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160 | { |
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161 | get { |
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162 | if (x < 0 || x >= Width || y < 0 || y >= Height) |
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163 | return 0; |
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164 | return (double)m_terrainData[x, y]; |
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165 | } |
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166 | set |
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167 | { |
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168 | if (Double.IsNaN(value) || Double.IsInfinity(value)) |
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169 | return; |
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170 | |||
171 | m_terrainData[x, y] = (float)value; |
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172 | } |
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173 | } |
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174 | |||
175 | // ITerrainChannel.GetHieghtAtXYZ(x, y, z) |
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176 | public float GetHeightAtXYZ(float x, float y, float z) |
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177 | { |
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178 | if (x < 0 || x >= Width || y < 0 || y >= Height) |
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179 | return 0; |
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180 | return m_terrainData[(int)x, (int)y]; |
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181 | } |
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182 | |||
183 | // ITerrainChannel.Tainted() |
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184 | public bool Tainted(int x, int y) |
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185 | { |
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186 | return m_terrainData.IsTaintedAt(x, y); |
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187 | } |
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188 | |||
189 | // ITerrainChannel.SaveToXmlString() |
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190 | public string SaveToXmlString() |
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191 | { |
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192 | XmlWriterSettings settings = new XmlWriterSettings(); |
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193 | settings.Encoding = Util.UTF8; |
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194 | using (StringWriter sw = new StringWriter()) |
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195 | { |
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196 | using (XmlWriter writer = XmlWriter.Create(sw, settings)) |
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197 | { |
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198 | WriteXml(writer); |
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199 | } |
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200 | string output = sw.ToString(); |
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201 | return output; |
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202 | } |
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203 | } |
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204 | |||
205 | // ITerrainChannel.LoadFromXmlString() |
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206 | public void LoadFromXmlString(string data) |
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207 | { |
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208 | StringReader sr = new StringReader(data); |
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209 | XmlTextReader reader = new XmlTextReader(sr); |
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210 | reader.Read(); |
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211 | |||
212 | ReadXml(reader); |
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213 | reader.Close(); |
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214 | sr.Close(); |
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215 | } |
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216 | |||
217 | // ITerrainChannel.Merge |
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218 | public void Merge(ITerrainChannel newTerrain, Vector3 displacement, float radianRotation, Vector2 rotationDisplacement) |
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219 | { |
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220 | m_log.DebugFormat("{0} Merge. inSize=<{1},{2}>, disp={3}, rot={4}, rotDisp={5}, outSize=<{6},{7}>", LogHeader, |
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221 | newTerrain.Width, newTerrain.Height, |
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222 | displacement, radianRotation, rotationDisplacement, |
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223 | m_terrainData.SizeX, m_terrainData.SizeY); |
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224 | for (int xx = 0; xx < newTerrain.Width; xx++) |
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225 | { |
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226 | for (int yy = 0; yy < newTerrain.Height; yy++) |
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227 | { |
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228 | int dispX = (int)displacement.X; |
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229 | int dispY = (int)displacement.Y; |
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230 | float newHeight = (float)newTerrain[xx, yy] + displacement.Z; |
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231 | if (radianRotation == 0) |
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232 | { |
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233 | // If no rotation, place the new height in the specified location |
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234 | dispX += xx; |
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235 | dispY += yy; |
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236 | if (dispX >= 0 && dispX < m_terrainData.SizeX && dispY >= 0 && dispY < m_terrainData.SizeY) |
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237 | { |
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238 | m_terrainData[dispX, dispY] = newHeight; |
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239 | } |
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240 | } |
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241 | else |
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242 | { |
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243 | // If rotating, we have to smooth the result because the conversion |
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244 | // to ints will mean heightmap entries will not get changed |
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245 | // First compute the rotation location for the new height. |
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246 | dispX += (int)(rotationDisplacement.X |
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247 | + ((float)xx - rotationDisplacement.X) * Math.Cos(radianRotation) |
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248 | - ((float)yy - rotationDisplacement.Y) * Math.Sin(radianRotation) ); |
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249 | |||
250 | dispY += (int)(rotationDisplacement.Y |
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251 | + ((float)xx - rotationDisplacement.X) * Math.Sin(radianRotation) |
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252 | + ((float)yy - rotationDisplacement.Y) * Math.Cos(radianRotation) ); |
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253 | |||
254 | if (dispX >= 0 && dispX < m_terrainData.SizeX && dispY >= 0 && dispY < m_terrainData.SizeY) |
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255 | { |
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256 | float oldHeight = m_terrainData[dispX, dispY]; |
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257 | // Smooth the heights around this location if the old height is far from this one |
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258 | for (int sxx = dispX - 2; sxx < dispX + 2; sxx++) |
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259 | { |
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260 | for (int syy = dispY - 2; syy < dispY + 2; syy++) |
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261 | { |
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262 | if (sxx >= 0 && sxx < m_terrainData.SizeX && syy >= 0 && syy < m_terrainData.SizeY) |
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263 | { |
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264 | if (sxx == dispX && syy == dispY) |
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265 | { |
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266 | // Set height for the exact rotated point |
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267 | m_terrainData[dispX, dispY] = newHeight; |
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268 | } |
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269 | else |
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270 | { |
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271 | if (Math.Abs(m_terrainData[sxx, syy] - newHeight) > 1f) |
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272 | { |
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273 | // If the adjacent height is far off, force it to this height |
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274 | m_terrainData[sxx, syy] = newHeight; |
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275 | } |
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276 | } |
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277 | } |
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278 | } |
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279 | } |
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280 | } |
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281 | |||
282 | if (dispX >= 0 && dispX < m_terrainData.SizeX && dispY >= 0 && dispY < m_terrainData.SizeY) |
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283 | { |
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284 | m_terrainData[dispX, dispY] = (float)newTerrain[xx, yy]; |
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285 | } |
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286 | } |
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287 | } |
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288 | } |
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289 | } |
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290 | |||
291 | #endregion |
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292 | |||
293 | public TerrainChannel Copy() |
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294 | { |
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295 | TerrainChannel copy = new TerrainChannel(); |
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296 | copy.m_terrainData = m_terrainData.Clone(); |
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297 | return copy; |
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298 | } |
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299 | |||
300 | private void WriteXml(XmlWriter writer) |
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301 | { |
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302 | if (Width == Constants.RegionSize && Height == Constants.RegionSize) |
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303 | { |
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304 | // Downward compatibility for legacy region terrain maps. |
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305 | // If region is exactly legacy size, return the old format XML. |
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306 | writer.WriteStartElement(String.Empty, "TerrainMap", String.Empty); |
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307 | ToXml(writer); |
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308 | writer.WriteEndElement(); |
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309 | } |
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310 | else |
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311 | { |
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312 | // New format XML that includes width and length. |
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313 | writer.WriteStartElement(String.Empty, "TerrainMap2", String.Empty); |
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314 | ToXml2(writer); |
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315 | writer.WriteEndElement(); |
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316 | } |
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317 | } |
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318 | |||
319 | private void ReadXml(XmlReader reader) |
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320 | { |
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321 | // Check the first element. If legacy element, use the legacy reader. |
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322 | if (reader.IsStartElement("TerrainMap")) |
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323 | { |
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324 | reader.ReadStartElement("TerrainMap"); |
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325 | FromXml(reader); |
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326 | } |
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327 | else |
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328 | { |
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329 | reader.ReadStartElement("TerrainMap2"); |
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330 | FromXml2(reader); |
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331 | } |
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332 | } |
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333 | |||
334 | // Write legacy terrain map. Presumed to be 256x256 of data encoded as floats in a byte array. |
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335 | private void ToXml(XmlWriter xmlWriter) |
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336 | { |
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337 | float[] mapData = GetFloatsSerialised(); |
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338 | byte[] buffer = new byte[mapData.Length * 4]; |
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339 | for (int i = 0; i < mapData.Length; i++) |
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340 | { |
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341 | byte[] value = BitConverter.GetBytes(mapData[i]); |
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342 | Array.Copy(value, 0, buffer, (i * 4), 4); |
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343 | } |
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344 | XmlSerializer serializer = new XmlSerializer(typeof(byte[])); |
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345 | serializer.Serialize(xmlWriter, buffer); |
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346 | } |
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347 | |||
348 | // Read legacy terrain map. Presumed to be 256x256 of data encoded as floats in a byte array. |
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349 | private void FromXml(XmlReader xmlReader) |
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350 | { |
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351 | XmlSerializer serializer = new XmlSerializer(typeof(byte[])); |
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352 | byte[] dataArray = (byte[])serializer.Deserialize(xmlReader); |
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353 | int index = 0; |
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354 | |||
355 | m_terrainData = new HeightmapTerrainData(Height, Width, (int)Constants.RegionHeight); |
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356 | |||
357 | for (int y = 0; y < Height; y++) |
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358 | { |
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359 | for (int x = 0; x < Width; x++) |
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360 | { |
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361 | float value; |
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362 | value = BitConverter.ToSingle(dataArray, index); |
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363 | index += 4; |
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364 | this[x, y] = (double)value; |
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365 | } |
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366 | } |
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367 | } |
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368 | |||
369 | private class TerrainChannelXMLPackage |
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370 | { |
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371 | public int Version; |
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372 | public int SizeX; |
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373 | public int SizeY; |
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374 | public int SizeZ; |
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375 | public float CompressionFactor; |
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376 | public short[] Map; |
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377 | public TerrainChannelXMLPackage(int pX, int pY, int pZ, float pCompressionFactor, short[] pMap) |
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378 | { |
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379 | Version = 1; |
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380 | SizeX = pX; |
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381 | SizeY = pY; |
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382 | SizeZ = pZ; |
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383 | CompressionFactor = pCompressionFactor; |
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384 | Map = pMap; |
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385 | } |
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386 | } |
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387 | |||
388 | // New terrain serialization format that includes the width and length. |
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389 | private void ToXml2(XmlWriter xmlWriter) |
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390 | { |
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391 | TerrainChannelXMLPackage package = new TerrainChannelXMLPackage(Width, Height, Altitude, m_terrainData.CompressionFactor, |
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392 | m_terrainData.GetCompressedMap()); |
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393 | XmlSerializer serializer = new XmlSerializer(typeof(TerrainChannelXMLPackage)); |
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394 | serializer.Serialize(xmlWriter, package); |
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395 | } |
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396 | |||
397 | // New terrain serialization format that includes the width and length. |
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398 | private void FromXml2(XmlReader xmlReader) |
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399 | { |
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400 | XmlSerializer serializer = new XmlSerializer(typeof(TerrainChannelXMLPackage)); |
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401 | TerrainChannelXMLPackage package = (TerrainChannelXMLPackage)serializer.Deserialize(xmlReader); |
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402 | m_terrainData = new HeightmapTerrainData(package.Map, package.CompressionFactor, package.SizeX, package.SizeY, package.SizeZ); |
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403 | } |
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404 | |||
405 | // Fill the heightmap with the center bump terrain |
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406 | private void PinHeadIsland() |
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407 | { |
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408 | for (int x = 0; x < Width; x++) |
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409 | { |
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410 | for (int y = 0; y < Height; y++) |
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411 | { |
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412 | m_terrainData[x, y] = (float)TerrainUtil.PerlinNoise2D(x, y, 2, 0.125) * 10; |
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413 | float spherFacA = (float)(TerrainUtil.SphericalFactor(x, y, m_terrainData.SizeX / 2.0, m_terrainData.SizeY / 2.0, 50) * 0.01d); |
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414 | float spherFacB = (float)(TerrainUtil.SphericalFactor(x, y, m_terrainData.SizeX / 2.0, m_terrainData.SizeY / 2.0, 100) * 0.001d); |
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415 | if (m_terrainData[x, y]< spherFacA) |
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416 | m_terrainData[x, y]= spherFacA; |
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417 | if (m_terrainData[x, y]< spherFacB) |
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418 | m_terrainData[x, y] = spherFacB; |
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419 | } |
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420 | } |
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421 | } |
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422 | |||
423 | private void FlatLand() |
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424 | { |
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425 | m_terrainData.ClearLand(); |
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426 | } |
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427 | } |
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428 | } |