1 files changed, 145 insertions, 0 deletions

diff --git a/OpenSim/Region/PhysicsModules/Meshing/ZeroMesher.cs b/OpenSim/Region/PhysicsModules/Meshing/ZeroMesher.cs
new file mode 100644
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--- /dev/null
+++ b/OpenSim/Region/PhysicsModules/Meshing/ZeroMesher.cs
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Reflection;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Scenes;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.PhysicsModules.SharedBase;
+using OpenMetaverse;
+using Nini.Config;
+using Mono.Addins;
+using log4net;
+
+/*
+ * This is the zero mesher.
+ * Whatever you want him to mesh, he can't, telling you that by responding with a null pointer.
+ * Effectivly this is for switching off meshing and for testing as each physics machine should deal
+ * with the null pointer situation.
+ * But it's also a convenience thing, as physics machines can rely on having a mesher in any situation, even
+ * if it's a dump one like this.
+ * Note, that this mesher is *not* living in a module but in the manager itself, so
+ * it's always availabe and thus the default in case of configuration errors
+*/
+
+namespace OpenSim.Region.PhysicsModules.Meshing
+{
+
+    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "ZeroMesher")]
+    public class ZeroMesher : IMesher, INonSharedRegionModule
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private bool m_Enabled = false;
+
+        #region INonSharedRegionModule
+        public string Name
+        {
+            get { return "ZeroMesher"; }
+        }
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        public void Initialise(IConfigSource source)
+        {
+            // TODO: Move this out of Startup
+            IConfig config = source.Configs["Startup"];
+            if (config != null)
+            {
+                // This is the default Mesher
+                string mesher = config.GetString("meshing", Name);
+                if (mesher == Name)
+                    m_Enabled = true;
+            }
+        }
+
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            scene.RegisterModuleInterface<IMesher>(this);
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+
+            scene.UnregisterModuleInterface<IMesher>(this);
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+            if (!m_Enabled)
+                return;
+        }
+        #endregion
+
+        #region IMesher
+        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
+        {
+            return CreateMesh(primName, primShape, size, lod, false);
+        }
+
+        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache, bool convex, bool forOde)
+        {
+            return CreateMesh(primName, primShape, size, lod, false);
+        }
+
+        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool convex,bool forOde)
+        {
+            return CreateMesh(primName, primShape, size, lod, false);
+        }
+
+        public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical)
+        {
+            // Remove the reference to the encoded JPEG2000 data so it can be GCed
+            primShape.SculptData = OpenMetaverse.Utils.EmptyBytes;
+
+            return null;
+        }
+
+        public IMesh GetMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool convex)
+        {
+            return null;
+        }
+
+        public void ReleaseMesh(IMesh mesh) { }
+        public void ExpireReleaseMeshs() { }
+        public void ExpireFileCache() { }
+
+        #endregion
+    }
+}