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 copyrightD |
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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 | using System; |
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28 | using System.Collections.Generic; |
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29 | using System.Text; |
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30 | using log4net; |
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31 | using OpenMetaverse; |
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32 | |||
33 | namespace OpenSim.Region.Physics.BulletSPlugin |
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34 | { |
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35 | |||
36 | public sealed class BSConstraintCollection : IDisposable |
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37 | { |
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38 | // private static readonly ILog m_log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); |
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39 | // private static readonly string LogHeader = "[CONSTRAINT COLLECTION]"; |
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40 | |||
41 | delegate bool ConstraintAction(BSConstraint constrain); |
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42 | |||
43 | private List<BSConstraint> m_constraints; |
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44 | private BulletWorld m_world; |
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45 | |||
46 | public BSConstraintCollection(BulletWorld world) |
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47 | { |
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48 | m_world = world; |
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49 | m_constraints = new List<BSConstraint>(); |
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50 | } |
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51 | |||
52 | public void Dispose() |
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53 | { |
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54 | this.Clear(); |
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55 | } |
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56 | |||
57 | public void Clear() |
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58 | { |
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59 | lock (m_constraints) |
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60 | { |
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61 | foreach (BSConstraint cons in m_constraints) |
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62 | { |
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63 | cons.Dispose(); |
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64 | } |
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65 | m_constraints.Clear(); |
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66 | } |
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67 | } |
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68 | |||
69 | public bool AddConstraint(BSConstraint cons) |
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70 | { |
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71 | lock (m_constraints) |
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72 | { |
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73 | // There is only one constraint between any bodies. Remove any old just to make sure. |
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74 | RemoveAndDestroyConstraint(cons.Body1, cons.Body2); |
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75 | |||
76 | m_constraints.Add(cons); |
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77 | } |
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78 | |||
79 | return true; |
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80 | } |
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81 | |||
82 | // Get the constraint between two bodies. There can be only one. |
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83 | // Return 'true' if a constraint was found. |
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84 | public bool TryGetConstraint(BulletBody body1, BulletBody body2, out BSConstraint returnConstraint) |
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85 | { |
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86 | bool found = false; |
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87 | BSConstraint foundConstraint = null; |
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88 | |||
89 | uint lookingID1 = body1.ID; |
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90 | uint lookingID2 = body2.ID; |
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91 | lock (m_constraints) |
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92 | { |
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93 | foreach (BSConstraint constrain in m_constraints) |
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94 | { |
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95 | if ((constrain.Body1.ID == lookingID1 && constrain.Body2.ID == lookingID2) |
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96 | || (constrain.Body1.ID == lookingID2 && constrain.Body2.ID == lookingID1)) |
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97 | { |
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98 | foundConstraint = constrain; |
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99 | found = true; |
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100 | break; |
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101 | } |
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102 | } |
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103 | } |
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104 | returnConstraint = foundConstraint; |
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105 | return found; |
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106 | } |
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107 | |||
108 | // Remove any constraint between the passed bodies. |
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109 | // Presumed there is only one such constraint possible. |
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110 | // Return 'true' if a constraint was found and destroyed. |
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111 | public bool RemoveAndDestroyConstraint(BulletBody body1, BulletBody body2) |
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112 | { |
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113 | bool ret = false; |
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114 | lock (m_constraints) |
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115 | { |
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116 | BSConstraint constrain; |
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117 | if (this.TryGetConstraint(body1, body2, out constrain)) |
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118 | { |
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119 | // remove the constraint from our collection |
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120 | ret = RemoveAndDestroyConstraint(constrain); |
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121 | } |
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122 | } |
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123 | |||
124 | return ret; |
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125 | } |
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126 | |||
127 | // The constraint MUST exist in the collection |
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128 | // Could be called if the constraint was previously removed. |
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129 | // Return 'true' if the constraint was actually removed and disposed. |
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130 | public bool RemoveAndDestroyConstraint(BSConstraint constrain) |
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131 | { |
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132 | bool removed = false; |
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133 | lock (m_constraints) |
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134 | { |
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135 | // remove the constraint from our collection |
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136 | removed = m_constraints.Remove(constrain); |
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137 | } |
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138 | // Dispose() is safe to call multiple times |
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139 | constrain.Dispose(); |
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140 | return removed; |
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141 | } |
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142 | |||
143 | // Remove all constraints that reference the passed body. |
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144 | // Return 'true' if any constraints were destroyed. |
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145 | public bool RemoveAndDestroyConstraint(BulletBody body1) |
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146 | { |
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147 | List<BSConstraint> toRemove = new List<BSConstraint>(); |
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148 | uint lookingID = body1.ID; |
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149 | lock (m_constraints) |
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150 | { |
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151 | foreach (BSConstraint constrain in m_constraints) |
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152 | { |
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153 | if (constrain.Body1.ID == lookingID || constrain.Body2.ID == lookingID) |
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154 | { |
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155 | toRemove.Add(constrain); |
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156 | } |
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157 | } |
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158 | foreach (BSConstraint constrain in toRemove) |
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159 | { |
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160 | m_constraints.Remove(constrain); |
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161 | constrain.Dispose(); |
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162 | } |
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163 | } |
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164 | return (toRemove.Count > 0); |
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165 | } |
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166 | |||
167 | public bool RecalculateAllConstraints() |
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168 | { |
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169 | bool ret = false; |
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170 | lock (m_constraints) |
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171 | { |
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172 | foreach (BSConstraint constrain in m_constraints) |
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173 | { |
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174 | constrain.CalculateTransforms(); |
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175 | ret = true; |
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176 | } |
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177 | } |
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178 | return ret; |
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179 | } |
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180 | } |
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181 | } |