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1/*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyrightD
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27using System;
28using System.Collections.Generic;
29using System.Text;
30using System.Reflection;
31using Nini.Config;
32
33namespace OpenSim.Region.Physics.BulletSNPlugin
34{
35
36public struct MaterialAttributes
37{
38 // Material type values that correspond with definitions for LSL
39 public enum Material : int
40 {
41 Stone = 0,
42 Metal,
43 Glass,
44 Wood,
45 Flesh,
46 Plastic,
47 Rubber,
48 Light,
49 // Hereafter are BulletSim additions
50 Avatar,
51 NumberOfTypes // the count of types in the enum.
52 }
53
54 // Names must be in the order of the above enum.
55 // These names must coorespond to the lower case field names in the MaterialAttributes
56 // structure as reflection is used to select the field to put the value in.
57 public static readonly string[] MaterialAttribs = { "Density", "Friction", "Restitution"};
58
59 public MaterialAttributes(string t, float d, float f, float r)
60 {
61 type = t;
62 density = d;
63 friction = f;
64 restitution = r;
65 }
66 public string type;
67 public float density;
68 public float friction;
69 public float restitution;
70}
71
72public static class BSMaterials
73{
74 // Attributes for each material type
75 private static readonly MaterialAttributes[] Attributes;
76
77 // Map of material name to material type code
78 public static readonly Dictionary<string, MaterialAttributes.Material> MaterialMap;
79
80 static BSMaterials()
81 {
82 // Attribute sets for both the non-physical and physical instances of materials.
83 Attributes = new MaterialAttributes[(int)MaterialAttributes.Material.NumberOfTypes * 2];
84
85 // Map of name to type code.
86 MaterialMap = new Dictionary<string, MaterialAttributes.Material>();
87 MaterialMap.Add("Stone", MaterialAttributes.Material.Stone);
88 MaterialMap.Add("Metal", MaterialAttributes.Material.Metal);
89 MaterialMap.Add("Glass", MaterialAttributes.Material.Glass);
90 MaterialMap.Add("Wood", MaterialAttributes.Material.Wood);
91 MaterialMap.Add("Flesh", MaterialAttributes.Material.Flesh);
92 MaterialMap.Add("Plastic", MaterialAttributes.Material.Plastic);
93 MaterialMap.Add("Rubber", MaterialAttributes.Material.Rubber);
94 MaterialMap.Add("Light", MaterialAttributes.Material.Light);
95 MaterialMap.Add("Avatar", MaterialAttributes.Material.Avatar);
96 }
97
98 // This is where all the default material attributes are defined.
99 public static void InitializeFromDefaults(ConfigurationParameters parms)
100 {
101 // Values from http://wiki.secondlife.com/wiki/PRIM_MATERIAL
102 float dDensity = parms.defaultDensity;
103 float dFriction = parms.defaultFriction;
104 float dRestitution = parms.defaultRestitution;
105 Attributes[(int)MaterialAttributes.Material.Stone] =
106 new MaterialAttributes("stone",dDensity, 0.8f, 0.4f);
107 Attributes[(int)MaterialAttributes.Material.Metal] =
108 new MaterialAttributes("metal",dDensity, 0.3f, 0.4f);
109 Attributes[(int)MaterialAttributes.Material.Glass] =
110 new MaterialAttributes("glass",dDensity, 0.2f, 0.7f);
111 Attributes[(int)MaterialAttributes.Material.Wood] =
112 new MaterialAttributes("wood",dDensity, 0.6f, 0.5f);
113 Attributes[(int)MaterialAttributes.Material.Flesh] =
114 new MaterialAttributes("flesh",dDensity, 0.9f, 0.3f);
115 Attributes[(int)MaterialAttributes.Material.Plastic] =
116 new MaterialAttributes("plastic",dDensity, 0.4f, 0.7f);
117 Attributes[(int)MaterialAttributes.Material.Rubber] =
118 new MaterialAttributes("rubber",dDensity, 0.9f, 0.9f);
119 Attributes[(int)MaterialAttributes.Material.Light] =
120 new MaterialAttributes("light",dDensity, dFriction, dRestitution);
121 Attributes[(int)MaterialAttributes.Material.Avatar] =
122 new MaterialAttributes("avatar",3.5f, 0.2f, 0f);
123
124 Attributes[(int)MaterialAttributes.Material.Stone + (int)MaterialAttributes.Material.NumberOfTypes] =
125 new MaterialAttributes("stonePhysical",dDensity, 0.8f, 0.4f);
126 Attributes[(int)MaterialAttributes.Material.Metal + (int)MaterialAttributes.Material.NumberOfTypes] =
127 new MaterialAttributes("metalPhysical",dDensity, 0.3f, 0.4f);
128 Attributes[(int)MaterialAttributes.Material.Glass + (int)MaterialAttributes.Material.NumberOfTypes] =
129 new MaterialAttributes("glassPhysical",dDensity, 0.2f, 0.7f);
130 Attributes[(int)MaterialAttributes.Material.Wood + (int)MaterialAttributes.Material.NumberOfTypes] =
131 new MaterialAttributes("woodPhysical",dDensity, 0.6f, 0.5f);
132 Attributes[(int)MaterialAttributes.Material.Flesh + (int)MaterialAttributes.Material.NumberOfTypes] =
133 new MaterialAttributes("fleshPhysical",dDensity, 0.9f, 0.3f);
134 Attributes[(int)MaterialAttributes.Material.Plastic + (int)MaterialAttributes.Material.NumberOfTypes] =
135 new MaterialAttributes("plasticPhysical",dDensity, 0.4f, 0.7f);
136 Attributes[(int)MaterialAttributes.Material.Rubber + (int)MaterialAttributes.Material.NumberOfTypes] =
137 new MaterialAttributes("rubberPhysical",dDensity, 0.9f, 0.9f);
138 Attributes[(int)MaterialAttributes.Material.Light + (int)MaterialAttributes.Material.NumberOfTypes] =
139 new MaterialAttributes("lightPhysical",dDensity, dFriction, dRestitution);
140 Attributes[(int)MaterialAttributes.Material.Avatar + (int)MaterialAttributes.Material.NumberOfTypes] =
141 new MaterialAttributes("avatarPhysical",3.5f, 0.2f, 0f);
142 }
143
144 // Under the [BulletSim] section, one can change the individual material
145 // attribute values. The format of the configuration parameter is:
146 // <materialName><Attribute>["Physical"] = floatValue
147 // For instance:
148 // [BulletSim]
149 // StoneFriction = 0.2
150 // FleshRestitutionPhysical = 0.8
151 // Materials can have different parameters for their static and
152 // physical instantiations. When setting the non-physical value,
153 // both values are changed. Setting the physical value only changes
154 // the physical value.
155 public static void InitializefromParameters(IConfig pConfig)
156 {
157 foreach (KeyValuePair<string, MaterialAttributes.Material> kvp in MaterialMap)
158 {
159 string matName = kvp.Key;
160 foreach (string attribName in MaterialAttributes.MaterialAttribs)
161 {
162 string paramName = matName + attribName;
163 if (pConfig.Contains(paramName))
164 {
165 float paramValue = pConfig.GetFloat(paramName);
166 SetAttributeValue((int)kvp.Value, attribName, paramValue);
167 // set the physical value also
168 SetAttributeValue((int)kvp.Value + (int)MaterialAttributes.Material.NumberOfTypes, attribName, paramValue);
169 }
170 paramName += "Physical";
171 if (pConfig.Contains(paramName))
172 {
173 float paramValue = pConfig.GetFloat(paramName);
174 SetAttributeValue((int)kvp.Value + (int)MaterialAttributes.Material.NumberOfTypes, attribName, paramValue);
175 }
176 }
177 }
178 }
179
180 // Use reflection to set the value in the attribute structure.
181 private static void SetAttributeValue(int matType, string attribName, float val)
182 {
183 MaterialAttributes thisAttrib = Attributes[matType];
184 FieldInfo fieldInfo = thisAttrib.GetType().GetField(attribName.ToLower());
185 if (fieldInfo != null)
186 {
187 fieldInfo.SetValue(thisAttrib, val);
188 Attributes[matType] = thisAttrib;
189 }
190 }
191
192 // Given a material type, return a structure of attributes.
193 public static MaterialAttributes GetAttributes(MaterialAttributes.Material type, bool isPhysical)
194 {
195 int ind = (int)type;
196 if (isPhysical) ind += (int)MaterialAttributes.Material.NumberOfTypes;
197 return Attributes[ind];
198 }
199}
200}
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