opensim-development – 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.Collections.Generic; |
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30 | using System.Reflection; |
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31 | |||
32 | using log4net; |
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33 | using OpenMetaverse; |
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34 | using Mono.Addins; |
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35 | |||
36 | using OpenSim.Region.Framework.Interfaces; |
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37 | using OpenSim.Region.CoreModules.World.Wind; |
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38 | |||
39 | namespace OpenSim.Region.CoreModules.World.Wind.Plugins |
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40 | { |
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41 | [Extension(Path = "/OpenSim/WindModule", NodeName = "WindModel", Id = "ConfigurableWind")] |
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42 | class ConfigurableWind : Mono.Addins.TypeExtensionNode, IWindModelPlugin |
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43 | { |
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44 | private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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45 | |||
46 | private Vector2[] m_windSpeeds = new Vector2[16 * 16]; |
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47 | //private Random m_rndnums = new Random(Environment.TickCount); |
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48 | |||
49 | private float m_avgStrength = 5.0f; // Average magnitude of the wind vector |
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50 | private float m_avgDirection = 0.0f; // Average direction of the wind in degrees |
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51 | private float m_varStrength = 5.0f; // Max Strength Variance |
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52 | private float m_varDirection = 30.0f;// Max Direction Variance |
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53 | private float m_rateChange = 1.0f; // |
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54 | |||
55 | private Vector2 m_curPredominateWind = new Vector2(); |
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56 | |||
57 | |||
58 | |||
59 | #region IPlugin Members |
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60 | |||
61 | public string Version |
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62 | { |
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63 | get { return "1.0.0.0"; } |
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64 | } |
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65 | |||
66 | public string Name |
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67 | { |
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68 | get { return "ConfigurableWind"; } |
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69 | } |
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70 | |||
71 | public void Initialise() |
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72 | { |
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73 | |||
74 | } |
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75 | |||
76 | #endregion |
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77 | |||
78 | #region IDisposable Members |
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79 | |||
80 | public void Dispose() |
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81 | { |
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82 | m_windSpeeds = null; |
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83 | } |
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84 | |||
85 | #endregion |
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86 | |||
87 | #region IWindModelPlugin Members |
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88 | |||
89 | public void WindConfig(OpenSim.Region.Framework.Scenes.Scene scene, Nini.Config.IConfig windConfig) |
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90 | { |
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91 | if (windConfig != null) |
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92 | { |
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93 | // Uses strength value if avg_strength not specified |
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94 | m_avgStrength = windConfig.GetFloat("strength", 5.0F); |
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95 | m_avgStrength = windConfig.GetFloat("avg_strength", 5.0F); |
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96 | |||
97 | m_avgDirection = windConfig.GetFloat("avg_direction", 0.0F); |
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98 | m_varStrength = windConfig.GetFloat("var_strength", 5.0F); |
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99 | m_varDirection = windConfig.GetFloat("var_direction", 30.0F); |
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100 | m_rateChange = windConfig.GetFloat("rate_change", 1.0F); |
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101 | |||
102 | LogSettings(); |
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103 | } |
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104 | } |
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105 | |||
106 | public void WindUpdate(uint frame) |
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107 | { |
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108 | double avgAng = m_avgDirection * (Math.PI/180.0f); |
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109 | double varDir = m_varDirection * (Math.PI/180.0f); |
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110 | |||
111 | // Prevailing wind algorithm |
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112 | // Inspired by Kanker Greenacre |
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113 | |||
114 | // TODO: |
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115 | // * This should probably be based on in-world time. |
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116 | // * should probably move all these local variables to class members and constants |
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117 | double time = DateTime.Now.TimeOfDay.Seconds / 86400.0f; |
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118 | |||
119 | double theta = time * (2 * Math.PI) * m_rateChange; |
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120 | |||
121 | double offset = Math.Sin(theta) * Math.Sin(theta*2) * Math.Sin(theta*9) * Math.Cos(theta*4); |
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122 | |||
123 | double windDir = avgAng + (varDir * offset); |
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124 | |||
125 | offset = Math.Sin(theta) * Math.Sin(theta*4) + (Math.Sin(theta*13) / 3); |
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126 | double windSpeed = m_avgStrength + (m_varStrength * offset); |
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127 | |||
128 | if (windSpeed<0) |
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129 | windSpeed=0; |
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130 | |||
131 | |||
132 | |||
133 | m_curPredominateWind.X = (float)Math.Cos(windDir); |
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134 | m_curPredominateWind.Y = (float)Math.Sin(windDir); |
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135 | |||
136 | m_curPredominateWind.Normalize(); |
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137 | m_curPredominateWind.X *= (float)windSpeed; |
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138 | m_curPredominateWind.Y *= (float)windSpeed; |
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139 | |||
140 | for (int y = 0; y < 16; y++) |
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141 | { |
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142 | for (int x = 0; x < 16; x++) |
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143 | { |
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144 | m_windSpeeds[y * 16 + x] = m_curPredominateWind; |
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145 | } |
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146 | } |
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147 | } |
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148 | |||
149 | public Vector3 WindSpeed(float fX, float fY, float fZ) |
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150 | { |
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151 | return new Vector3(m_curPredominateWind, 0.0f); |
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152 | } |
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153 | |||
154 | public Vector2[] WindLLClientArray() |
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155 | { |
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156 | return m_windSpeeds; |
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157 | } |
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158 | |||
159 | public string Description |
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160 | { |
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161 | get |
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162 | { |
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163 | return "Provides a predominate wind direction that can change within configured variances for direction and speed."; |
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164 | } |
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165 | } |
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166 | |||
167 | public System.Collections.Generic.Dictionary<string, string> WindParams() |
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168 | { |
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169 | Dictionary<string, string> Params = new Dictionary<string, string>(); |
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170 | |||
171 | Params.Add("avgStrength", "average wind strength"); |
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172 | Params.Add("avgDirection", "average wind direction in degrees"); |
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173 | Params.Add("varStrength", "allowable variance in wind strength"); |
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174 | Params.Add("varDirection", "allowable variance in wind direction in +/- degrees"); |
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175 | Params.Add("rateChange", "rate of change"); |
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176 | |||
177 | return Params; |
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178 | } |
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179 | |||
180 | public void WindParamSet(string param, float value) |
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181 | { |
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182 | switch (param) |
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183 | { |
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184 | case "avgStrength": |
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185 | m_avgStrength = value; |
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186 | break; |
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187 | case "avgDirection": |
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188 | m_avgDirection = value; |
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189 | break; |
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190 | case "varStrength": |
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191 | m_varStrength = value; |
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192 | break; |
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193 | case "varDirection": |
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194 | m_varDirection = value; |
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195 | break; |
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196 | case "rateChange": |
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197 | m_rateChange = value; |
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198 | break; |
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199 | } |
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200 | } |
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201 | |||
202 | public float WindParamGet(string param) |
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203 | { |
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204 | switch (param) |
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205 | { |
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206 | case "avgStrength": |
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207 | return m_avgStrength; |
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208 | case "avgDirection": |
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209 | return m_avgDirection; |
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210 | case "varStrength": |
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211 | return m_varStrength; |
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212 | case "varDirection": |
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213 | return m_varDirection; |
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214 | case "rateChange": |
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215 | return m_rateChange; |
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216 | default: |
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217 | throw new Exception(String.Format("Unknown {0} parameter {1}", this.Name, param)); |
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218 | |||
219 | } |
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220 | } |
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221 | |||
222 | |||
223 | |||
224 | #endregion |
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225 | |||
226 | |||
227 | private void LogSettings() |
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228 | { |
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229 | m_log.InfoFormat("[ConfigurableWind] Average Strength : {0}", m_avgStrength); |
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230 | m_log.InfoFormat("[ConfigurableWind] Average Direction : {0}", m_avgDirection); |
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231 | m_log.InfoFormat("[ConfigurableWind] Varience Strength : {0}", m_varStrength); |
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232 | m_log.InfoFormat("[ConfigurableWind] Varience Direction : {0}", m_varDirection); |
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233 | m_log.InfoFormat("[ConfigurableWind] Rate Change : {0}", m_rateChange); |
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234 | } |
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235 | |||
236 | #region IWindModelPlugin Members |
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237 | |||
238 | |||
239 | #endregion |
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240 | } |
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241 | } |