public static BSShape GetReference(BSScene physicsScene, bool forceRebuild, BSPhysObject prim)
{
float lod;
System.UInt64 newMeshKey = BSShape.ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
physicsScene.DetailLog("{0},BSShapeMesh,getReference,newKey={1},size={2},lod={3}",
prim.LocalID, newMeshKey.ToString("X"), prim.Size, lod);
BSShapeConvexHull retConvexHull = null;
lock (ConvexHulls)
{
if (ConvexHulls.TryGetValue(newMeshKey, out retConvexHull))
{
// The mesh has already been created. Return a new reference to same.
retConvexHull.IncrementReference();
}
else
{
retConvexHull = new BSShapeConvexHull(new BulletShape());
BulletShape convexShape = null;
// Get a handle to a mesh to build the hull from
BSShape baseMesh = BSShapeMesh.GetReference(physicsScene, false /* forceRebuild */, prim);
if (baseMesh.physShapeInfo.isNativeShape)
{
// We get here if the mesh was not creatable. Could be waiting for an asset from the disk.
// In the short term, we return the native shape and a later ForceBodyShapeRebuild should
// get back to this code with a buildable mesh.
// TODO: not sure the temp native shape is freed when the mesh is rebuilt. When does this get freed?
convexShape = baseMesh.physShapeInfo;
}
else
{
convexShape = physicsScene.PE.BuildConvexHullShapeFromMesh(physicsScene.World, baseMesh.physShapeInfo);
convexShape.shapeKey = newMeshKey;
ConvexHulls.Add(convexShape.shapeKey, retConvexHull);
}
// Done with the base mesh
baseMesh.Dereference(physicsScene);
retConvexHull.physShapeInfo = convexShape;
}
}
return(retConvexHull);
}
private void ReportShapeGeom(BSPrim prim)
{
if (prim != null)
{
if (prim.PhysShape.HasPhysicalShape)
{
BSShape physShape = prim.PhysShape;
string shapeType = physShape.GetType().ToString();
switch (shapeType)
{
case "OpenSim.Region.Physics.BulletSPlugin.BSShapeNative":
BSShapeNative nShape = physShape as BSShapeNative;
prim.PhysScene.DetailLog("{0}, type={1}", prim.Name, shapeType);
break;
case "OpenSim.Region.Physics.BulletSPlugin.BSShapeMesh":
BSShapeMesh mShape = physShape as BSShapeMesh;
prim.PhysScene.DetailLog("{0}, mesh, shapeInfo={1}", prim.Name, mShape.shapeInfo);
break;
case "OpenSim.Region.Physics.BulletSPlugin.BSShapeHull":
// BSShapeHull hShape = physShape as BSShapeHull;
// prim.PhysScene.DetailLog("{0}, hull, shapeInfo={1}", prim.Name, hShape.shapeInfo);
break;
case "OpenSim.Region.Physics.BulletSPlugin.BSShapeConvexHull":
BSShapeConvexHull chShape = physShape as BSShapeConvexHull;
prim.PhysScene.DetailLog("{0}, convexHull, shapeInfo={1}", prim.Name, chShape.shapeInfo);
break;
case "OpenSim.Region.Physics.BulletSPlugin.BSShapeCompound":
BSShapeCompound cShape = physShape as BSShapeCompound;
prim.PhysScene.DetailLog("{0}, type={1}", prim.Name, shapeType);
break;
default:
prim.PhysScene.DetailLog("{0}, type={1}", prim.Name, shapeType);
break;
}
}
}
}
// Loop through all the known hulls and return the description based on the physical address.
public static bool TryGetHullByPtr(BulletShape pShape, out BSShapeConvexHull outHull)
{
bool ret = false;
BSShapeConvexHull foundDesc = null;
lock (ConvexHulls)
{
foreach (BSShapeConvexHull sh in ConvexHulls.Values)
{
if (sh.physShapeInfo.ReferenceSame(pShape))
{
foundDesc = sh;
ret = true;
break;
}
}
}
outHull = foundDesc;
return(ret);
}
// Sometimes we have a pointer to a collision shape but don't know what type it is.
// Figure out type and call the correct dereference routine.
// Called at taint-time.
private void DereferenceAnonCollisionShape(BSScene physicsScene, BulletShape pShape)
{
BSShapeMesh meshDesc;
if (BSShapeMesh.TryGetMeshByPtr(pShape, out meshDesc))
{
meshDesc.Dereference(physicsScene);
}
else
{
BSShapeHull hullDesc;
if (BSShapeHull.TryGetHullByPtr(pShape, out hullDesc))
{
hullDesc.Dereference(physicsScene);
}
else
{
BSShapeConvexHull chullDesc;
if (BSShapeConvexHull.TryGetHullByPtr(pShape, out chullDesc))
{
chullDesc.Dereference(physicsScene);
}
else
{
if (physicsScene.PE.IsCompound(pShape))
{
BSShapeCompound recursiveCompound = new BSShapeCompound(pShape);
recursiveCompound.Dereference(physicsScene);
}
else
{
if (physicsScene.PE.IsNativeShape(pShape))
{
BSShapeNative nativeShape = new BSShapeNative(pShape);
nativeShape.Dereference(physicsScene);
}
}
}
}
}
}
// return 'true' if the prim's shape was changed.
private bool CreateGeomMeshOrHull(BSPhysObject prim, PhysicalDestructionCallback shapeCallback)
{
bool ret = false;
// Note that if it's a native shape, the check for physical/non-physical is not
// made. Native shapes work in either case.
if (prim.IsPhysical && BSParam.ShouldUseHullsForPhysicalObjects)
{
// Use a simple, single mesh convex hull shape if the object is simple enough
BSShape potentialHull = null;
PrimitiveBaseShape pbs = prim.BaseShape;
// Use a simple, one section convex shape for prims that are probably convex (no cuts or twists)
if (BSParam.ShouldUseSingleConvexHullForPrims &&
pbs != null &&
!pbs.SculptEntry &&
PrimHasNoCuts(pbs)
)
{
potentialHull = BSShapeConvexHull.GetReference(m_physicsScene, false /* forceRebuild */, prim);
}
// Use the GImpact shape if it is a prim that has some concaveness
if (potentialHull == null &&
BSParam.ShouldUseGImpactShapeForPrims &&
pbs != null &&
!pbs.SculptEntry
)
{
potentialHull = BSShapeGImpact.GetReference(m_physicsScene, false /* forceRebuild */, prim);
}
// If not any of the simple cases, just make a hull
if (potentialHull == null)
{
potentialHull = BSShapeHull.GetReference(m_physicsScene, false /*forceRebuild*/, prim);
}
// If the current shape is not what is on the prim at the moment, time to change.
if (!prim.PhysShape.HasPhysicalShape ||
potentialHull.ShapeType != prim.PhysShape.ShapeType ||
potentialHull.physShapeInfo.shapeKey != prim.PhysShape.physShapeInfo.shapeKey)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = potentialHull;
ret = true;
}
else
{
// The current shape on the prim is the correct one. We don't need the potential reference.
potentialHull.Dereference(m_physicsScene);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1}", prim.LocalID, prim.PhysShape);
}
}
else
{
// Non-physical objects should be just meshes.
BSShape potentialMesh = BSShapeMesh.GetReference(m_physicsScene, false /*forceRebuild*/, prim);
// If the current shape is not what is on the prim at the moment, time to change.
if (!prim.PhysShape.HasPhysicalShape ||
potentialMesh.ShapeType != prim.PhysShape.ShapeType ||
potentialMesh.physShapeInfo.shapeKey != prim.PhysShape.physShapeInfo.shapeKey)
{
DereferenceExistingShape(prim, shapeCallback);
prim.PhysShape = potentialMesh;
ret = true;
}
else
{
// We don't need this reference to the mesh that is already being using.
potentialMesh.Dereference(m_physicsScene);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1}", prim.LocalID, prim.PhysShape);
}
}
return(ret);
}
