Merge branch 'master' into careminster

Conflicts:
	OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
	OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs

3 files changed, 241 insertions, 154 deletions

diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
index 5cff668..c19eda1 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSParam.cs
@@ -373,7 +373,7 @@ public static class BSParam
             true ),
         new ParameterDefn<bool>("ShouldUseGImpactShapeForPrims", "If true, use a GImpact shape for prims with cuts and twists",
             false ),
-        new ParameterDefn<bool>("UseAssetHulls", "If true, use hull if specified in the mesh asset info",
+        new ParameterDefn<bool>("ShouldUseAssetHulls", "If true, use hull if specified in the mesh asset info",
             false ),
 
         new ParameterDefn<int>("CrossingFailuresBeforeOutOfBounds", "How forgiving we are about getting into adjactent regions",
diff --git a/OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs b/OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs
index fca4258..046c12c 100755
--- a/OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs
+++ b/OpenSim/Region/Physics/BulletSPlugin/BSShapes.cs
@@ -441,12 +441,16 @@ public class BSShapeMesh : BSShape
     {
         BulletShape newShape = new BulletShape();
 
-        IMesh meshData = physicsScene.mesher.CreateMesh(prim.PhysObjectName, pbs, size, lod,
-                                        false,  // say it is not physical so a bounding box is not built
-                                        false,  // do not cache the mesh and do not use previously built versions
-                                        false,
-                                        false
-                                        );
+        IMesh meshData = null;
+        lock (physicsScene.mesher)
+        {
+            meshData = physicsScene.mesher.CreateMesh(prim.PhysObjectName, pbs, size, lod,
+                                            false,  // say it is not physical so a bounding box is not built
+                                            false,   // do not cache the mesh and do not use previously built versions
+                                            false,
+                                            false
+                                            );
+        }
 
         if (meshData != null)
         {
@@ -578,58 +582,73 @@ public class BSShapeHull : BSShape
         BulletShape newShape = new BulletShape();
         newShape.shapeKey = newHullKey;
 
-        // Pass true for physicalness as this prevents the creation of bounding box which is not needed
-        IMesh meshData = physicsScene.mesher.CreateMesh(prim.PhysObjectName, pbs, size, lod, true /* isPhysical */, false /* shouldCache */, false, false);
-
-        // If there is hull data in the mesh asset, build the hull from that
-        if (meshData != null && BSParam.ShouldUseAssetHulls)
+        IMesh meshData = null;
+        List<List<OMV.Vector3>> allHulls = null;
+        lock (physicsScene.mesher)
         {
-            Meshmerizer realMesher = physicsScene.mesher as Meshmerizer;
-            if (realMesher != null)
+            // Pass true for physicalness as this prevents the creation of bounding box which is not needed
+            meshData = physicsScene.mesher.CreateMesh(prim.PhysObjectName, pbs, size, lod, true /* isPhysical */, false /* shouldCache */, false, false);
+
+            // If we should use the asset's hull info, fetch it out of the locked mesher
+            if (meshData != null && BSParam.ShouldUseAssetHulls)
             {
-                List<List<OMV.Vector3>> allHulls = realMesher.GetConvexHulls(size);
-                if (allHulls != null)
+                Meshmerizer realMesher = physicsScene.mesher as Meshmerizer;
+                if (realMesher != null)
                 {
-                    int hullCount = allHulls.Count;
-                    int totalVertices = 1;      // include one for the count of the hulls
-                    // Using the structure described for HACD hulls, create the memory sturcture
-                    //     to pass the hull data to the creater.
-                    foreach (List<OMV.Vector3> hullVerts in allHulls)
-                    {
-                        totalVertices += 4;                     // add four for the vertex count and centroid
-                        totalVertices += hullVerts.Count * 3;   // one vertex is three dimensions
-                    }
-                    float[] convHulls = new float[totalVertices];
+                    allHulls = realMesher.GetConvexHulls(size);
+                }
+                if (allHulls == null)
+                {
+                    physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,assetHulls,noAssetHull", prim.LocalID);
+                }
+            }
+        }
 
-                    convHulls[0] = (float)hullCount;
-                    int jj = 1;
-                    foreach (List<OMV.Vector3> hullVerts in allHulls)
-                    {
-                        convHulls[jj + 0] = hullVerts.Count;
-                        convHulls[jj + 1] = 0f;   // centroid x,y,z
-                        convHulls[jj + 2] = 0f;
-                        convHulls[jj + 3] = 0f;
-                        jj += 4;
-                        foreach (OMV.Vector3 oneVert in hullVerts)
-                        {
-                            convHulls[jj + 0] = oneVert.X;
-                            convHulls[jj + 1] = oneVert.Y;
-                            convHulls[jj + 2] = oneVert.Z;
-                            jj += 3;
-                        }
-                    }
+        // If there is hull data in the mesh asset, build the hull from that
+        if (allHulls != null && BSParam.ShouldUseAssetHulls)
+        {
+            int hullCount = allHulls.Count;
+            int totalVertices = 1;      // include one for the count of the hulls
+            // Using the structure described for HACD hulls, create the memory sturcture
+            //     to pass the hull data to the creater.
+            foreach (List<OMV.Vector3> hullVerts in allHulls)
+            {
+                totalVertices += 4;                     // add four for the vertex count and centroid
+                totalVertices += hullVerts.Count * 3;   // one vertex is three dimensions
+            }
+            float[] convHulls = new float[totalVertices];
 
-                    // create the hull data structure in Bullet
-                    newShape = physicsScene.PE.CreateHullShape(physicsScene.World, hullCount, convHulls);
+            convHulls[0] = (float)hullCount;
+            int jj = 1;
+            foreach (List<OMV.Vector3> hullVerts in allHulls)
+            {
+                convHulls[jj + 0] = hullVerts.Count;
+                convHulls[jj + 1] = 0f;   // centroid x,y,z
+                convHulls[jj + 2] = 0f;
+                convHulls[jj + 3] = 0f;
+                jj += 4;
+                foreach (OMV.Vector3 oneVert in hullVerts)
+                {
+                    convHulls[jj + 0] = oneVert.X;
+                    convHulls[jj + 1] = oneVert.Y;
+                    convHulls[jj + 2] = oneVert.Z;
+                    jj += 3;
                 }
             }
+
+            // create the hull data structure in Bullet
+            newShape = physicsScene.PE.CreateHullShape(physicsScene.World, hullCount, convHulls);
+
+            physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,assetHulls,hulls={1},totVert={2},shape={3}",
+                                        prim.LocalID, hullCount, totalVertices, newShape);
         }
+
         // If no hull specified in the asset and we should use Bullet's HACD approximation...
         if (!newShape.HasPhysicalShape && BSParam.ShouldUseBulletHACD)
         {
             // Build the hull shape from an existing mesh shape.
             // The mesh should have already been created in Bullet.
-            physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,shouldUseBulletHACD,entry", prim.LocalID);
+            physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,bulletHACD,entry", prim.LocalID);
             BSShape meshShape = BSShapeMesh.GetReference(physicsScene, true, prim);
 
             if (meshShape.physShapeInfo.HasPhysicalShape)
@@ -647,127 +666,123 @@ public class BSShapeHull : BSShape
 
                 physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,hullFromMesh,beforeCall", prim.LocalID, newShape.HasPhysicalShape);
                 newShape = physicsScene.PE.BuildHullShapeFromMesh(physicsScene.World, meshShape.physShapeInfo, parms);
-                physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,hullFromMesh,hasBody={1}", prim.LocalID, newShape.HasPhysicalShape);
+                physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,hullFromMesh,shape={1}", prim.LocalID, newShape);
 
                 // Now done with the mesh shape.
                 meshShape.Dereference(physicsScene);
             }
-            physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,shouldUseBulletHACD,exit,hasBody={1}", prim.LocalID, newShape.HasPhysicalShape);
+            physicsScene.DetailLog("{0},BSShapeHull.CreatePhysicalHull,bulletHACD,exit,hasBody={1}", prim.LocalID, newShape.HasPhysicalShape);
         }
-        // If no hull specified, use our HACD hull approximation.
-        if (!newShape.HasPhysicalShape)
+
+        // If no other hull specifications, use our HACD hull approximation.
+        if (!newShape.HasPhysicalShape && meshData != null)
         {
-            // Build a new hull in the physical world using the C# HACD algorigthm.
-            if (meshData != null)
+            if (prim.PrimAssetState == BSPhysObject.PrimAssetCondition.Fetched)
             {
-                if (prim.PrimAssetState == BSPhysObject.PrimAssetCondition.Fetched)
-                {
-                    // Release the fetched asset data once it has been used.
-                    pbs.SculptData = new byte[0];
-                    prim.PrimAssetState = BSPhysObject.PrimAssetCondition.Unknown;
-                }
+                // Release the fetched asset data once it has been used.
+                pbs.SculptData = new byte[0];
+                prim.PrimAssetState = BSPhysObject.PrimAssetCondition.Unknown;
+            }
 
-                int[] indices = meshData.getIndexListAsInt();
-                List<OMV.Vector3> vertices = meshData.getVertexList();
+            int[] indices = meshData.getIndexListAsInt();
+            List<OMV.Vector3> vertices = meshData.getVertexList();
 
-                //format conversion from IMesh format to DecompDesc format
-                List<int> convIndices = new List<int>();
-                List<float3> convVertices = new List<float3>();
-                for (int ii = 0; ii < indices.GetLength(0); ii++)
-                {
-                    convIndices.Add(indices[ii]);
-                }
-                foreach (OMV.Vector3 vv in vertices)
-                {
-                    convVertices.Add(new float3(vv.X, vv.Y, vv.Z));
-                }
+            //format conversion from IMesh format to DecompDesc format
+            List<int> convIndices = new List<int>();
+            List<float3> convVertices = new List<float3>();
+            for (int ii = 0; ii < indices.GetLength(0); ii++)
+            {
+                convIndices.Add(indices[ii]);
+            }
+            foreach (OMV.Vector3 vv in vertices)
+            {
+                convVertices.Add(new float3(vv.X, vv.Y, vv.Z));
+            }
 
-                uint maxDepthSplit = (uint)BSParam.CSHullMaxDepthSplit;
-                if (BSParam.CSHullMaxDepthSplit != BSParam.CSHullMaxDepthSplitForSimpleShapes)
+            uint maxDepthSplit = (uint)BSParam.CSHullMaxDepthSplit;
+            if (BSParam.CSHullMaxDepthSplit != BSParam.CSHullMaxDepthSplitForSimpleShapes)
+            {
+                // Simple primitive shapes we know are convex so they are better implemented with
+                //    fewer hulls.
+                // Check for simple shape (prim without cuts) and reduce split parameter if so.
+                if (BSShapeCollection.PrimHasNoCuts(pbs))
                 {
-                    // Simple primitive shapes we know are convex so they are better implemented with
-                    //    fewer hulls.
-                    // Check for simple shape (prim without cuts) and reduce split parameter if so.
-                    if (BSShapeCollection.PrimHasNoCuts(pbs))
-                    {
-                        maxDepthSplit = (uint)BSParam.CSHullMaxDepthSplitForSimpleShapes;
-                    }
+                    maxDepthSplit = (uint)BSParam.CSHullMaxDepthSplitForSimpleShapes;
                 }
+            }
+
+            // setup and do convex hull conversion
+            m_hulls = new List<ConvexResult>();
+            DecompDesc dcomp = new DecompDesc();
+            dcomp.mIndices = convIndices;
+            dcomp.mVertices = convVertices;
+            dcomp.mDepth = maxDepthSplit;
+            dcomp.mCpercent = BSParam.CSHullConcavityThresholdPercent;
+            dcomp.mPpercent = BSParam.CSHullVolumeConservationThresholdPercent;
+            dcomp.mMaxVertices = (uint)BSParam.CSHullMaxVertices;
+            dcomp.mSkinWidth = BSParam.CSHullMaxSkinWidth;
+            ConvexBuilder convexBuilder = new ConvexBuilder(HullReturn);
+            // create the hull into the _hulls variable
+            convexBuilder.process(dcomp);
+
+            physicsScene.DetailLog("{0},BSShapeCollection.CreatePhysicalHull,key={1},inVert={2},inInd={3},split={4},hulls={5}",
+                                BSScene.DetailLogZero, newHullKey, indices.GetLength(0), vertices.Count, maxDepthSplit, m_hulls.Count);
+
+            // Convert the vertices and indices for passing to unmanaged.
+            // The hull information is passed as a large floating point array.
+            // The format is:
+            //  convHulls[0] = number of hulls
+            //  convHulls[1] = number of vertices in first hull
+            //  convHulls[2] = hull centroid X coordinate
+            //  convHulls[3] = hull centroid Y coordinate
+            //  convHulls[4] = hull centroid Z coordinate
+            //  convHulls[5] = first hull vertex X
+            //  convHulls[6] = first hull vertex Y
+            //  convHulls[7] = first hull vertex Z
+            //  convHulls[8] = second hull vertex X
+            //  ...
+            //  convHulls[n] = number of vertices in second hull
+            //  convHulls[n+1] = second hull centroid X coordinate
+            //  ...
+            //
+            // TODO: is is very inefficient. Someday change the convex hull generator to return
+            //   data structures that do not need to be converted in order to pass to Bullet.
+            //   And maybe put the values directly into pinned memory rather than marshaling.
+            int hullCount = m_hulls.Count;
+            int totalVertices = 1;          // include one for the count of the hulls
+            foreach (ConvexResult cr in m_hulls)
+            {
+                totalVertices += 4;                         // add four for the vertex count and centroid
+                totalVertices += cr.HullIndices.Count * 3;  // we pass just triangles
+            }
+            float[] convHulls = new float[totalVertices];
 
-                // setup and do convex hull conversion
-                m_hulls = new List<ConvexResult>();
-                DecompDesc dcomp = new DecompDesc();
-                dcomp.mIndices = convIndices;
-                dcomp.mVertices = convVertices;
-                dcomp.mDepth = maxDepthSplit;
-                dcomp.mCpercent = BSParam.CSHullConcavityThresholdPercent;
-                dcomp.mPpercent = BSParam.CSHullVolumeConservationThresholdPercent;
-                dcomp.mMaxVertices = (uint)BSParam.CSHullMaxVertices;
-                dcomp.mSkinWidth = BSParam.CSHullMaxSkinWidth;
-                ConvexBuilder convexBuilder = new ConvexBuilder(HullReturn);
-                // create the hull into the _hulls variable
-                convexBuilder.process(dcomp);
-
-                physicsScene.DetailLog("{0},BSShapeCollection.CreatePhysicalHull,key={1},inVert={2},inInd={3},split={4},hulls={5}",
-                                    BSScene.DetailLogZero, newHullKey, indices.GetLength(0), vertices.Count, maxDepthSplit, m_hulls.Count);
-
-                // Convert the vertices and indices for passing to unmanaged.
-                // The hull information is passed as a large floating point array.
-                // The format is:
-                //  convHulls[0] = number of hulls
-                //  convHulls[1] = number of vertices in first hull
-                //  convHulls[2] = hull centroid X coordinate
-                //  convHulls[3] = hull centroid Y coordinate
-                //  convHulls[4] = hull centroid Z coordinate
-                //  convHulls[5] = first hull vertex X
-                //  convHulls[6] = first hull vertex Y
-                //  convHulls[7] = first hull vertex Z
-                //  convHulls[8] = second hull vertex X
-                //  ...
-                //  convHulls[n] = number of vertices in second hull
-                //  convHulls[n+1] = second hull centroid X coordinate
-                //  ...
-                //
-                // TODO: is is very inefficient. Someday change the convex hull generator to return
-                //   data structures that do not need to be converted in order to pass to Bullet.
-                //   And maybe put the values directly into pinned memory rather than marshaling.
-                int hullCount = m_hulls.Count;
-                int totalVertices = 1;          // include one for the count of the hulls
-                foreach (ConvexResult cr in m_hulls)
+            convHulls[0] = (float)hullCount;
+            int jj = 1;
+            foreach (ConvexResult cr in m_hulls)
+            {
+                // copy vertices for index access
+                float3[] verts = new float3[cr.HullVertices.Count];
+                int kk = 0;
+                foreach (float3 ff in cr.HullVertices)
                 {
-                    totalVertices += 4;                         // add four for the vertex count and centroid
-                    totalVertices += cr.HullIndices.Count * 3;  // we pass just triangles
+                    verts[kk++] = ff;
                 }
-                float[] convHulls = new float[totalVertices];
 
-                convHulls[0] = (float)hullCount;
-                int jj = 1;
-                foreach (ConvexResult cr in m_hulls)
+                // add to the array one hull's worth of data
+                convHulls[jj++] = cr.HullIndices.Count;
+                convHulls[jj++] = 0f;   // centroid x,y,z
+                convHulls[jj++] = 0f;
+                convHulls[jj++] = 0f;
+                foreach (int ind in cr.HullIndices)
                 {
-                    // copy vertices for index access
-                    float3[] verts = new float3[cr.HullVertices.Count];
-                    int kk = 0;
-                    foreach (float3 ff in cr.HullVertices)
-                    {
-                        verts[kk++] = ff;
-                    }
-
-                    // add to the array one hull's worth of data
-                    convHulls[jj++] = cr.HullIndices.Count;
-                    convHulls[jj++] = 0f;   // centroid x,y,z
-                    convHulls[jj++] = 0f;
-                    convHulls[jj++] = 0f;
-                    foreach (int ind in cr.HullIndices)
-                    {
-                        convHulls[jj++] = verts[ind].x;
-                        convHulls[jj++] = verts[ind].y;
-                        convHulls[jj++] = verts[ind].z;
-                    }
+                    convHulls[jj++] = verts[ind].x;
+                    convHulls[jj++] = verts[ind].y;
+                    convHulls[jj++] = verts[ind].z;
                 }
-                // create the hull data structure in Bullet
-                newShape = physicsScene.PE.CreateHullShape(physicsScene.World, hullCount, convHulls);
             }
-            newShape.shapeKey = newHullKey;
+            // create the hull data structure in Bullet
+            newShape = physicsScene.PE.CreateHullShape(physicsScene.World, hullCount, convHulls);
         }
         return newShape;
     }
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
index db5d962..ffdee0f 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
@@ -64,6 +64,7 @@ namespace OpenSim.Region.Physics.Meshing
     public class Meshmerizer : IMesher
     {
         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+        private static string LogHeader = "[MESH]";
 
         // Setting baseDir to a path will enable the dumping of raw files
         // raw files can be imported by blender so a visual inspection of the results can be done
@@ -72,6 +73,8 @@ namespace OpenSim.Region.Physics.Meshing
 #else
         private const string baseDir = null; //"rawFiles";
 #endif
+        // If 'true', lots of DEBUG logging of asset parsing details
+        private bool debugDetail = true;
 
         private bool cacheSculptMaps = true;
         private string decodedSculptMapPath = null;
@@ -80,6 +83,7 @@ namespace OpenSim.Region.Physics.Meshing
         private float minSizeForComplexMesh = 0.2f; // prims with all dimensions smaller than this will have a bounding box mesh
 
         private List<List<Vector3>> mConvexHulls = null;
+        private List<Vector3> mBoundingHull = null;
 
         private Dictionary<ulong, Mesh> m_uniqueMeshes = new Dictionary<ulong, Mesh>();
 
@@ -321,6 +325,9 @@ namespace OpenSim.Region.Physics.Meshing
             faces = new List<Face>();
             OSD meshOsd = null;
 
+            mConvexHulls = null;
+            mBoundingHull = null;
+
             if (primShape.SculptData.Length <= 0)
             {
                 // XXX: At the moment we can not log here since ODEPrim, for instance, ends up triggering this
@@ -357,26 +364,66 @@ namespace OpenSim.Region.Physics.Meshing
                 OSDMap physicsParms = null;
                 OSDMap map = (OSDMap)meshOsd;
                 if (map.ContainsKey("physics_shape"))
+                {
                     physicsParms = (OSDMap)map["physics_shape"]; // old asset format
+                    if (debugDetail) m_log.DebugFormat("{0} prim='{1}': using 'physics_shape' mesh data", LogHeader, primName);
+                }
                 else if (map.ContainsKey("physics_mesh"))
+                {
                     physicsParms = (OSDMap)map["physics_mesh"]; // new asset format
+                    if (debugDetail) m_log.DebugFormat("{0} prim='{1}':using 'physics_mesh' mesh data", LogHeader, primName);
+                }
                 else if (map.ContainsKey("medium_lod"))
+                {
                     physicsParms = (OSDMap)map["medium_lod"]; // if no physics mesh, try to fall back to medium LOD display mesh
+                    if (debugDetail) m_log.DebugFormat("{0} prim='{1}':using 'medium_lod' mesh data", LogHeader, primName);
+                }
                 else if (map.ContainsKey("high_lod"))
+                {
                     physicsParms = (OSDMap)map["high_lod"]; // if all else fails, use highest LOD display mesh and hope it works :)
+                    if (debugDetail) m_log.DebugFormat("{0} prim='{1}':using 'high_lod' mesh data", LogHeader, primName);
+                }
 
                 if (map.ContainsKey("physics_convex"))
                 { // pull this out also in case physics engine can use it
                     try
                     {
                         OSDMap convexBlock = (OSDMap)map["physics_convex"];
+
+                        Vector3 min = new Vector3(-0.5f, -0.5f, -0.5f);
+                        if (convexBlock.ContainsKey("Min")) min = convexBlock["Min"].AsVector3();
+                        Vector3 max = new Vector3(0.5f, 0.5f, 0.5f);
+                        if (convexBlock.ContainsKey("Max")) max = convexBlock["Max"].AsVector3();
+
+                        List<Vector3> boundingHull = null;
+
+                        if (convexBlock.ContainsKey("BoundingVerts"))
+                        {
+                            // decompress and decode bounding hull points
+                            byte[] boundingVertsBytes = DecompressOsd(convexBlock["BoundingVerts"].AsBinary()).AsBinary();
+                            boundingHull = new List<Vector3>();
+                            for (int i = 0; i < boundingVertsBytes.Length;)
+                            {
+                                ushort uX = Utils.BytesToUInt16(boundingVertsBytes, i); i += 2;
+                                ushort uY = Utils.BytesToUInt16(boundingVertsBytes, i); i += 2;
+                                ushort uZ = Utils.BytesToUInt16(boundingVertsBytes, i); i += 2;
+
+                                Vector3 pos = new Vector3(
+                                    Utils.UInt16ToFloat(uX, min.X, max.X),
+                                    Utils.UInt16ToFloat(uY, min.Y, max.Y),
+                                    Utils.UInt16ToFloat(uZ, min.Z, max.Z)
+                                );
+
+                                boundingHull.Add(pos);
+                            }
+
+                            mBoundingHull = boundingHull;
+                            if (debugDetail) m_log.DebugFormat("{0} prim='{1}': parsed bounding hull. nHulls={2}", LogHeader, primName, mBoundingHull.Count);
+                        }
+
                         if (convexBlock.ContainsKey("HullList"))
                         {
                             byte[] hullList = convexBlock["HullList"].AsBinary();
-                            Vector3 min = new Vector3(-0.5f, -0.5f, -0.5f);
-                            if (convexBlock.ContainsKey("Min")) min = convexBlock["Min"].AsVector3();
-                            Vector3 max = new Vector3(0.5f, 0.5f, 0.5f);
-                            if (convexBlock.ContainsKey("Max")) max = convexBlock["Max"].AsVector3();
 
                             // decompress and decode hull points
                             byte[] posBytes = DecompressOsd(convexBlock["Positions"].AsBinary()).AsBinary();
@@ -408,11 +455,16 @@ namespace OpenSim.Region.Physics.Meshing
                             }
 
                             mConvexHulls = hulls;
+                            if (debugDetail) m_log.DebugFormat("{0} prim='{1}': parsed hulls. nHulls={2}", LogHeader, primName, mConvexHulls.Count);
+                        }
+                        else
+                        {
+                            if (debugDetail) m_log.DebugFormat("{0} prim='{1}' has physics_convex but no HullList", LogHeader, primName);
                         }
                     }
                     catch (Exception e)
                     {
-                        m_log.WarnFormat("[MESH]: exception decoding convex block: {0}", e.Message);
+                        m_log.WarnFormat("{0} exception decoding convex block: {1}", LogHeader, e);
                     }
                 }
 
@@ -438,7 +490,7 @@ namespace OpenSim.Region.Physics.Meshing
                 }
                 catch (Exception e)
                 {
-                    m_log.Error("[MESH]: exception decoding physical mesh: " + e.ToString());
+                    m_log.ErrorFormat("{0} prim='{1}': exception decoding physical mesh: {2}", LogHeader, primName, e);
                     return false;
                 }
 
@@ -455,6 +507,9 @@ namespace OpenSim.Region.Physics.Meshing
                         if (subMeshOsd is OSDMap)
                             AddSubMesh(subMeshOsd as OSDMap, size, coords, faces);
                     }
+                    if (debugDetail)
+                        m_log.DebugFormat("{0} {1}: mesh decoded. offset={2}, size={3}, nCoords={4}, nFaces={5}",
+                                            LogHeader, primName, physOffset, physSize, coords.Count, faces.Count);
                 }
             }
 
@@ -776,6 +831,23 @@ namespace OpenSim.Region.Physics.Meshing
         /// temporary prototype code - please do not use until the interface has been finalized!
         /// </summary>
         /// <param name="size">value to scale the hull points by</param>
+        /// <returns>a list of vertices in the bounding hull if it exists and has been successfully decoded, otherwise null</returns>
+        public List<Vector3> GetBoundingHull(Vector3 size)
+        {
+            if (mBoundingHull == null)
+                return null;
+
+            List<Vector3> verts = new List<Vector3>();
+            foreach (var vert in mBoundingHull)
+                verts.Add(vert * size);
+
+            return verts;
+        }
+
+        /// <summary>
+        /// temporary prototype code - please do not use until the interface has been finalized!
+        /// </summary>
+        /// <param name="size">value to scale the hull points by</param>
         /// <returns>a list of hulls if they exist and have been successfully decoded, otherwise null</returns>
         public List<List<Vector3>> GetConvexHulls(Vector3 size)
         {