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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 copyright
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 */
27
28using System;
29using System.Reflection;
30using OpenSim.Framework;
31using OpenSim.Region.Framework.Scenes;
32using OpenSim.Region.Framework.Interfaces;
33using OpenSim.Region.PhysicsModules.SharedBase;
34using OpenMetaverse;
35using Nini.Config;
36using Mono.Addins;
37using log4net;
38
39/*
40 * This is the zero mesher.
41 * Whatever you want him to mesh, he can't, telling you that by responding with a null pointer.
42 * Effectivly this is for switching off meshing and for testing as each physics machine should deal
43 * with the null pointer situation.
44 * But it's also a convenience thing, as physics machines can rely on having a mesher in any situation, even
45 * if it's a dump one like this.
46 * Note, that this mesher is *not* living in a module but in the manager itself, so
47 * it's always availabe and thus the default in case of configuration errors
48*/
49
50namespace OpenSim.Region.PhysicsModules.Meshing
51{
52
53 [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "ZeroMesher")]
54 public class ZeroMesher : IMesher, INonSharedRegionModule
55 {
56 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
57 private bool m_Enabled = false;
58
59 #region INonSharedRegionModule
60 public string Name
61 {
62 get { return "ZeroMesher"; }
63 }
64
65 public Type ReplaceableInterface
66 {
67 get { return null; }
68 }
69
70 public void Initialise(IConfigSource source)
71 {
72 // TODO: Move this out of Startup
73 IConfig config = source.Configs["Startup"];
74 if (config != null)
75 {
76 // This is the default Mesher
77 string mesher = config.GetString("meshing", Name);
78 if (mesher == Name)
79 m_Enabled = true;
80 }
81 }
82
83 public void Close()
84 {
85 }
86
87 public void AddRegion(Scene scene)
88 {
89 if (!m_Enabled)
90 return;
91
92 scene.RegisterModuleInterface<IMesher>(this);
93 }
94
95 public void RemoveRegion(Scene scene)
96 {
97 if (!m_Enabled)
98 return;
99
100 scene.UnregisterModuleInterface<IMesher>(this);
101 }
102
103 public void RegionLoaded(Scene scene)
104 {
105 if (!m_Enabled)
106 return;
107 }
108 #endregion
109
110 #region IMesher
111 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
112 {
113 return CreateMesh(primName, primShape, size, lod, false);
114 }
115
116 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache, bool convex, bool forOde)
117 {
118 return CreateMesh(primName, primShape, size, lod, false);
119 }
120
121 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool convex,bool forOde)
122 {
123 return CreateMesh(primName, primShape, size, lod, false);
124 }
125
126 public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical)
127 {
128 // Remove the reference to the encoded JPEG2000 data so it can be GCed
129 primShape.SculptData = OpenMetaverse.Utils.EmptyBytes;
130
131 return null;
132 }
133
134 public IMesh GetMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool convex)
135 {
136 return null;
137 }
138
139 public void ReleaseMesh(IMesh mesh) { }
140 public void ExpireReleaseMeshs() { }
141 public void ExpireFileCache() { }
142
143 #endregion
144 }
145}