// Called to update/change the body and shape for an object.
// First checks the shape and updates that if necessary then makes
// sure the body is of the right type.
// Return 'true' if either the body or the shape changed.
// 'shapeCallback' and 'bodyCallback' are, if non-null, functions called just before
// the current shape or body is destroyed. This allows the caller to remove any
// higher level dependencies on the shape or body. Mostly used for LinkSets to
// remove the physical constraints before the body is destroyed.
// Called at taint-time!!
public bool GetBodyAndShape(bool forceRebuild, BulletWorld sim, BSPhysObject prim,
ShapeDestructionCallback shapeCallback, BodyDestructionCallback bodyCallback)
{
PhysicsScene.AssertInTaintTime("BSShapeCollection.GetBodyAndShape");
bool ret = false;
// This lock could probably be pushed down lower but building shouldn't take long
lock (m_collectionActivityLock)
{
// Do we have the correct geometry for this type of object?
// Updates prim.BSShape with information/pointers to shape.
// Returns 'true' of BSShape is changed to a new shape.
bool newGeom = CreateGeom(forceRebuild, prim, shapeCallback);
// If we had to select a new shape geometry for the object,
// rebuild the body around it.
// Updates prim.BSBody with information/pointers to requested body
// Returns 'true' if BSBody was changed.
bool newBody = CreateBody((newGeom || forceRebuild), prim, PhysicsScene.World,
prim.PhysShape, bodyCallback);
ret = newGeom || newBody;
}
DetailLog("{0},BSShapeCollection.GetBodyAndShape,taintExit,force={1},ret={2},body={3},shape={4}",
prim.LocalID, forceRebuild, ret, prim.PhysBody, prim.PhysShape);
return(ret);
}
// Remove a reference to a compound shape.
// Taking a compound shape apart is a little tricky because if you just delete the
// physical shape, it will free all the underlying children. We can't do that because
// they could be shared. So, this removes each of the children from the compound and
// dereferences them separately before destroying the compound collision object itself.
// Called at taint-time.
private void DereferenceCompound(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
if (!BulletSimAPI.IsCompound2(shape.ptr))
{
// Failed the sanity check!!
PhysicsScene.Logger.ErrorFormat("{0} Attempt to free a compound shape that is not compound!! type={1}, ptr={2}",
LogHeader, shape.type, shape.ptr.ToString());
if (DDetail)
{
DetailLog("{0},BSShapeCollection.DereferenceCompound,notACompoundShape,type={1},ptr={2}",
BSScene.DetailLogZero, shape.type, shape.ptr.ToString());
}
return;
}
int numChildren = BulletSimAPI.GetNumberOfCompoundChildren2(shape.ptr);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.DereferenceCompound,shape={1},children={2}", BSScene.DetailLogZero, shape, numChildren);
}
for (int ii = numChildren - 1; ii >= 0; ii--)
{
Object childShape = BulletSimAPI.RemoveChildShapeFromCompoundShapeIndex2(shape.ptr, ii);
DereferenceAnonCollisionShape(childShape);
}
BulletSimAPI.DeleteCollisionShape2(PhysicsScene.World.ptr, shape.ptr);
}
// See that hull shape exists in the physical world and update prim.BSShape.
// We could be creating the hull because scale changed or whatever.
private bool GetReferenceToHull(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
BulletShape newShape;
float lod;
System.UInt64 newHullKey = ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
// if the hull hasn't changed, don't rebuild it
if (newHullKey == prim.PhysShape.shapeKey && prim.PhysShape.type == BSPhysicsShapeType.SHAPE_HULL)
{
return(false);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.GetReferenceToHull,create,oldKey={1},newKey={2}",
prim.LocalID, prim.PhysShape.shapeKey.ToString("X"), newHullKey.ToString("X"));
}
// Remove usage of the previous shape.
DereferenceShape(prim.PhysShape, true, shapeCallback);
newShape = CreatePhysicalHull(prim.PhysObjectName, newHullKey, prim.BaseShape, prim.Size, lod);
newShape = VerifyMeshCreated(newShape, prim);
ReferenceShape(newShape);
prim.PhysShape = newShape;
return(true); // 'true' means a new shape has been added to this prim
}
public bool CreateGeomMeshOrHull(BSPhysObject prim, ShapeDestructionCallback 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)
{
// Update prim.BSShape to reference a hull of this shape.
ret = GetReferenceToHull(prim, shapeCallback);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
}
}
else
{
ret = GetReferenceToMesh(prim, shapeCallback);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
}
}
return(ret);
}
// Builds a mesh shape in the physical world and updates prim.BSShape.
// Dereferences previous shape in BSShape and adds a reference for this new shape.
// Returns 'true' of a mesh was actually built. Otherwise .
// Called at taint-time!
private bool GetReferenceToMesh(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
BulletShape newShape = new BulletShape();
float lod;
System.UInt64 newMeshKey = ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
// if this new shape is the same as last time, don't recreate the mesh
if (newMeshKey == prim.PhysShape.shapeKey && prim.PhysShape.type == BSPhysicsShapeType.SHAPE_MESH)
{
return(false);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.GetReferenceToMesh,create,oldKey={1},newKey={2}",
prim.LocalID, prim.PhysShape.shapeKey.ToString("X"), newMeshKey.ToString("X"));
}
// Since we're recreating new, get rid of the reference to the previous shape
DereferenceShape(prim.PhysShape, true, shapeCallback);
newShape = CreatePhysicalMesh(prim.PhysObjectName, newMeshKey, prim.BaseShape, prim.Size, lod);
// Take evasive action if the mesh was not constructed.
newShape = VerifyMeshCreated(newShape, prim);
ReferenceShape(newShape);
prim.PhysShape = newShape;
return(true); // 'true' means a new shape has been added to this prim
}
// Creates a native shape and assignes it to prim.BSShape
private bool GetReferenceToNativeShape(BSPrim prim, ShapeData shapeData,
ShapeData.PhysicsShapeType shapeType, ShapeData.FixedShapeKey shapeKey,
ShapeDestructionCallback shapeCallback)
{
BulletShape newShape;
shapeData.Type = shapeType;
// Bullet native objects are scaled by the Bullet engine so pass the size in
prim.Scale = shapeData.Size;
shapeData.Scale = shapeData.Size;
// release any previous shape
DereferenceShape(prim.BSShape, true, shapeCallback);
// Native shapes are always built independently.
newShape = new BulletShape(BulletSimAPI.BuildNativeShape2(PhysicsScene.World.ptr, shapeData), shapeType);
newShape.shapeKey = (ulong)shapeKey;
newShape.isNativeShape = true;
// Don't need to do a 'ReferenceShape()' here because native shapes are not tracked.
// DetailLog("{0},BSShapeCollection.AddNativeShapeToPrim,create,newshape={1}", shapeData.ID, newShape);
prim.BSShape = newShape;
return(true);
}
// See that hull shape exists in the physical world and update prim.BSShape.
// We could be creating the hull because scale changed or whatever.
private bool GetReferenceToHull(BSPrim prim, ShapeData shapeData, PrimitiveBaseShape pbs,
ShapeDestructionCallback shapeCallback)
{
BulletShape newShape;
float lod;
ulong newHullKey = ComputeShapeKey(shapeData, pbs, out lod);
// if the hull hasn't changed, don't rebuild it
if (newHullKey == prim.BSShape.shapeKey && prim.BSShape.type == ShapeData.PhysicsShapeType.SHAPE_HULL)
{
return(false);
}
DetailLog("{0},BSShapeCollection.CreateGeomHull,create,oldKey={1},newKey={2}",
prim.LocalID, prim.BSShape.shapeKey.ToString("X"), newHullKey.ToString("X"));
// Remove usage of the previous shape. Also removes reference to underlying mesh if it is a hull.
DereferenceShape(prim.BSShape, true, shapeCallback);
newShape = CreatePhysicalHull(prim.PhysObjectName, newHullKey, pbs, shapeData.Size, lod);
ReferenceShape(newShape);
// hulls are already scaled by the meshmerizer
prim.Scale = new OMV.Vector3(1f, 1f, 1f);
prim.BSShape = newShape;
return(true); // 'true' means a new shape has been added to this prim
}
// Builds a mesh shape in the physical world and updates prim.BSShape.
// Dereferences previous shape in BSShape and adds a reference for this new shape.
// Returns 'true' of a mesh was actually built. Otherwise .
// Called at taint-time!
private bool GetReferenceToMesh(BSPrim prim, ShapeData shapeData, PrimitiveBaseShape pbs,
ShapeDestructionCallback shapeCallback)
{
BulletShape newShape = new BulletShape(IntPtr.Zero);
float lod;
ulong newMeshKey = ComputeShapeKey(shapeData, pbs, out lod);
// if this new shape is the same as last time, don't recreate the mesh
if (prim.BSShape.shapeKey == newMeshKey)
{
return(false);
}
DetailLog("{0},BSShapeCollection.CreateGeomMesh,create,oldKey={1},newKey={2}",
prim.LocalID, prim.BSShape.shapeKey.ToString("X"), newMeshKey.ToString("X"));
// Since we're recreating new, get rid of the reference to the previous shape
DereferenceShape(prim.BSShape, true, shapeCallback);
newShape = CreatePhysicalMesh(prim.PhysObjectName, newMeshKey, pbs, shapeData.Size, lod);
ReferenceShape(newShape);
// meshes are already scaled by the meshmerizer
prim.Scale = new OMV.Vector3(1f, 1f, 1f);
prim.BSShape = newShape;
return(true); // 'true' means a new shape has been added to this prim
}
// Release the usage of a shape.
public void DereferenceShape(BulletShape shape, bool inTaintTime, ShapeDestructionCallback shapeCallback)
{
if (!shape.HasPhysicalShape)
{
return;
}
PhysicsScene.TaintedObject(inTaintTime, "BSShapeCollection.DereferenceShape", delegate()
{
if (shape.HasPhysicalShape)
{
if (shape.isNativeShape)
{
// Native shapes are not tracked and are released immediately
if (DDetail)
{
DetailLog("{0},BSShapeCollection.DereferenceShape,deleteNativeShape,ptr={1},taintTime={2}",
BSScene.DetailLogZero, shape.ptr.ToString(), inTaintTime);
}
if (shapeCallback != null)
{
shapeCallback(shape);
}
BulletSimAPI.DeleteCollisionShape2(PhysicsScene.World.ptr, shape.ptr);
}
else
{
switch (shape.type)
{
case BSPhysicsShapeType.SHAPE_HULL:
DereferenceHull(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_MESH:
DereferenceMesh(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_COMPOUND:
DereferenceCompound(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_UNKNOWN:
break;
default:
break;
}
}
}
});
}
// Release the usage of a shape.
// The collisionObject is released since it is a copy of the real collision shape.
public void DereferenceShape(BulletShape shape, bool atTaintTime, ShapeDestructionCallback shapeCallback)
{
if (shape.ptr == IntPtr.Zero)
{
return;
}
BSScene.TaintCallback dereferenceOperation = delegate()
{
switch (shape.type)
{
case ShapeData.PhysicsShapeType.SHAPE_HULL:
DereferenceHull(shape, shapeCallback);
break;
case ShapeData.PhysicsShapeType.SHAPE_MESH:
DereferenceMesh(shape, shapeCallback);
break;
case ShapeData.PhysicsShapeType.SHAPE_UNKNOWN:
break;
default:
// Native shapes are not tracked and are released immediately
if (shape.ptr != IntPtr.Zero & shape.isNativeShape)
{
DetailLog("{0},BSShapeCollection.DereferenceShape,deleteNativeShape,ptr={1},taintTime={2}",
BSScene.DetailLogZero, shape.ptr.ToString("X"), atTaintTime);
if (shapeCallback != null)
{
shapeCallback(shape);
}
BulletSimAPI.DeleteCollisionShape2(PhysicsScene.World.ptr, shape.ptr);
}
break;
}
};
if (atTaintTime)
{
lock (m_collectionActivityLock)
{
dereferenceOperation();
}
}
else
{
PhysicsScene.TaintedObject("BSShapeCollection.DereferenceShape", dereferenceOperation);
}
}
// Count down the reference count for a mesh shape
// Called at taint-time.
private void DereferenceMesh(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
MeshDesc meshDesc;
if (Meshes.TryGetValue(shape.shapeKey, out meshDesc))
{
meshDesc.referenceCount--;
// TODO: release the Bullet storage
if (shapeCallback != null)
{
shapeCallback(shape);
}
meshDesc.lastReferenced = System.DateTime.Now;
Meshes[shape.shapeKey] = meshDesc;
DetailLog("{0},BSShapeCollection.DereferenceMesh,key={1},refCnt={2}",
BSScene.DetailLogZero, shape.shapeKey.ToString("X"), meshDesc.referenceCount);
}
}
// Count down the reference count for a hull shape
// Called at taint-time.
private void DereferenceHull(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
HullDesc hullDesc;
if (Hulls.TryGetValue(shape.shapeKey, out hullDesc))
{
hullDesc.referenceCount--;
// TODO: release the Bullet storage (aging old entries?)
if (shapeCallback != null)
{
shapeCallback(shape);
}
hullDesc.lastReferenced = System.DateTime.Now;
Hulls[shape.shapeKey] = hullDesc;
DetailLog("{0},BSShapeCollection.DereferenceHull,key={1},refCnt={2}",
BSScene.DetailLogZero, shape.shapeKey.ToString("X"), hullDesc.referenceCount);
}
}
// Creates a native shape and assignes it to prim.BSShape.
// "Native" shapes are never shared. they are created here and destroyed in DereferenceShape().
private bool GetReferenceToNativeShape(BSPhysObject prim,
BSPhysicsShapeType shapeType, FixedShapeKey shapeKey,
ShapeDestructionCallback shapeCallback)
{
// release any previous shape
DereferenceShape(prim.PhysShape, true, shapeCallback);
BulletShape newShape = BuildPhysicalNativeShape(prim, shapeType, shapeKey);
// Don't need to do a 'ReferenceShape()' here because native shapes are not shared.
if (DDetail)
{
DetailLog("{0},BSShapeCollection.AddNativeShapeToPrim,create,newshape={1},scale={2}",
prim.LocalID, newShape, prim.Scale);
}
// native shapes are scaled by Bullet
prim.PhysShape = newShape;
return(true);
}
// Compound shapes are always built from scratch.
// This shouldn't be to bad since most of the parts will be meshes that had been built previously.
private bool GetReferenceToCompoundShape(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
// Remove reference to the old shape
// Don't need to do this as the shape is freed when the new root shape is created below.
// DereferenceShape(prim.PhysShape, true, shapeCallback);
BulletShape cShape = new BulletShape(
BulletSimAPI.CreateCompoundShape2(PhysicsScene.World.ptr, false), BSPhysicsShapeType.SHAPE_COMPOUND);
// Create the shape for the root prim and add it to the compound shape. Cannot be a native shape.
CreateGeomMeshOrHull(prim, shapeCallback);
BulletSimAPI.AddChildShapeToCompoundShape2(cShape.ptr, prim.PhysShape.ptr, OMV.Vector3.Zero, OMV.Quaternion.Identity);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.GetReferenceToCompoundShape,addRootPrim,compShape={1},rootShape={2}",
prim.LocalID, cShape, prim.PhysShape);
}
prim.PhysShape = cShape;
return(true);
}
// Called to update/change the body and shape for an object.
// First checks the shape and updates that if necessary then makes
// sure the body is of the right type.
// Return 'true' if either the body or the shape changed.
// Called at taint-time!!
public bool GetBodyAndShape(bool forceRebuild, BulletSim sim, BSPrim prim,
ShapeData shapeData, PrimitiveBaseShape pbs,
ShapeDestructionCallback shapeCallback, BodyDestructionCallback bodyCallback)
{
bool ret = false;
// This lock could probably be pushed down lower but building shouldn't take long
lock (m_collectionActivityLock)
{
// Do we have the correct geometry for this type of object?
// Updates prim.BSShape with information/pointers to requested shape
bool newGeom = CreateGeom(forceRebuild, prim, shapeData, pbs, shapeCallback);
// If we had to select a new shape geometry for the object,
// rebuild the body around it.
// Updates prim.BSBody with information/pointers to requested body
bool newBody = CreateBody((newGeom || forceRebuild), prim, PhysicsScene.World, prim.BSShape, shapeData, bodyCallback);
ret = newGeom || newBody;
}
DetailLog("{0},BSShapeCollection.GetBodyAndShape,force={1},ret={2},body={3},shape={4}",
prim.LocalID, forceRebuild, ret, prim.BSBody, prim.BSShape);
return(ret);
}
// Create the geometry information in Bullet for later use.
// The objects needs a hull if it's physical otherwise a mesh is enough.
// if 'forceRebuild' is true, the geometry is unconditionally rebuilt. For meshes and hulls,
// shared geometries will be used. If the parameters of the existing shape are the same
// as this request, the shape is not rebuilt.
// Info in prim.BSShape is updated to the new shape.
// Returns 'true' if the geometry was rebuilt.
// Called at taint-time!
private bool CreateGeom(bool forceRebuild, BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
if (!haveShape && prim.PreferredPhysicalShape == BSPhysicsShapeType.SHAPE_CAPSULE)
{
// an avatar capsule is close to a native shape (it is not shared)
GetReferenceToNativeShape(prim, BSPhysicsShapeType.SHAPE_CAPSULE,
FixedShapeKey.KEY_CAPSULE, shapeCallback);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,avatarCapsule,shape={1}", prim.LocalID, prim.PhysShape);
}
ret = true;
haveShape = true;
}
// Compound shapes are handled special as they are rebuilt from scratch.
// This isn't too great a hardship since most of the child shapes will have already been created.
if (!haveShape && prim.PreferredPhysicalShape == BSPhysicsShapeType.SHAPE_COMPOUND)
{
ret = GetReferenceToCompoundShape(prim, shapeCallback);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,compoundShape,shape={1}", prim.LocalID, prim.PhysShape);
}
haveShape = true;
}
if (!haveShape)
{
ret = CreateGeomNonSpecial(forceRebuild, prim, shapeCallback);
}
return(ret);
}
// Count down the reference count for a hull shape
// Called at taint-time.
private void DereferenceHull(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
HullDesc hullDesc;
if (Hulls.TryGetValue(shape.shapeKey, out hullDesc))
{
hullDesc.referenceCount--;
// TODO: release the Bullet storage (aging old entries?)
// Tell upper layers that, if they have dependencies on this shape, this link is going away
if (shapeCallback != null)
{
shapeCallback(shape);
}
hullDesc.lastReferenced = System.DateTime.Now;
Hulls[shape.shapeKey] = hullDesc;
if (DDetail)
{
DetailLog("{0},BSShapeCollection.DereferenceHull,shape={1},refCnt={2}",
BSScene.DetailLogZero, shape, hullDesc.referenceCount);
}
}
}
// See that hull shape exists in the physical world and update prim.BSShape.
// We could be creating the hull because scale changed or whatever.
private bool GetReferenceToHull(BSPrim prim, ShapeData shapeData, PrimitiveBaseShape pbs,
ShapeDestructionCallback shapeCallback)
{
BulletShape newShape;
float lod;
ulong newHullKey = ComputeShapeKey(shapeData, pbs, out lod);
// if the hull hasn't changed, don't rebuild it
if (newHullKey == prim.BSShape.shapeKey && prim.BSShape.type == ShapeData.PhysicsShapeType.SHAPE_HULL)
return false;
DetailLog("{0},BSShapeCollection.CreateGeomHull,create,oldKey={1},newKey={2}",
prim.LocalID, prim.BSShape.shapeKey.ToString("X"), newHullKey.ToString("X"));
// Remove usage of the previous shape. Also removes reference to underlying mesh if it is a hull.
DereferenceShape(prim.BSShape, true, shapeCallback);
newShape = CreatePhysicalHull(prim.PhysObjectName, newHullKey, pbs, shapeData.Size, lod);
ReferenceShape(newShape);
// hulls are already scaled by the meshmerizer
prim.Scale = new OMV.Vector3(1f, 1f, 1f);
prim.BSShape = newShape;
return true; // 'true' means a new shape has been added to this prim
}
// Builds a mesh shape in the physical world and updates prim.BSShape.
// Dereferences previous shape in BSShape and adds a reference for this new shape.
// Returns 'true' of a mesh was actually built. Otherwise .
// Called at taint-time!
private bool GetReferenceToMesh(BSPrim prim, ShapeData shapeData, PrimitiveBaseShape pbs,
ShapeDestructionCallback shapeCallback)
{
BulletShape newShape = new BulletShape(IntPtr.Zero);
float lod;
ulong newMeshKey = ComputeShapeKey(shapeData, pbs, out lod);
// if this new shape is the same as last time, don't recreate the mesh
if (newMeshKey == prim.BSShape.shapeKey && prim.BSShape.type == ShapeData.PhysicsShapeType.SHAPE_MESH)
return false;
DetailLog("{0},BSShapeCollection.CreateGeomMesh,create,oldKey={1},newKey={2}",
prim.LocalID, prim.BSShape.shapeKey.ToString("X"), newMeshKey.ToString("X"));
// Since we're recreating new, get rid of the reference to the previous shape
DereferenceShape(prim.BSShape, true, shapeCallback);
newShape = CreatePhysicalMesh(prim.PhysObjectName, newMeshKey, pbs, shapeData.Size, lod);
ReferenceShape(newShape);
// meshes are already scaled by the meshmerizer
prim.Scale = new OMV.Vector3(1f, 1f, 1f);
prim.BSShape = newShape;
return true; // 'true' means a new shape has been added to this prim
}
// return 'true' if the prim's shape was changed.
public bool CreateGeomMeshOrHull(BSPhysObject prim, ShapeDestructionCallback 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)
{
// Update prim.BSShape to reference a hull of this shape.
ret = GetReferenceToHull(prim, shapeCallback);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
}
else
{
ret = GetReferenceToMesh(prim, shapeCallback);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
prim.LocalID, prim.PhysShape, prim.PhysShape.shapeKey.ToString("X"));
}
return ret;
}
// Called to update/change the body and shape for an object.
// First checks the shape and updates that if necessary then makes
// sure the body is of the right type.
// Return 'true' if either the body or the shape changed.
// Called at taint-time!!
public bool GetBodyAndShape(bool forceRebuild, BulletSim sim, BSPrim prim,
ShapeData shapeData, PrimitiveBaseShape pbs,
ShapeDestructionCallback shapeCallback, BodyDestructionCallback bodyCallback)
{
bool ret = false;
// This lock could probably be pushed down lower but building shouldn't take long
lock (m_collectionActivityLock)
{
// Do we have the correct geometry for this type of object?
// Updates prim.BSShape with information/pointers to requested shape
bool newGeom = CreateGeom(forceRebuild, prim, shapeData, pbs, shapeCallback);
// If we had to select a new shape geometry for the object,
// rebuild the body around it.
// Updates prim.BSBody with information/pointers to requested body
bool newBody = CreateBody((newGeom || forceRebuild), prim, PhysicsScene.World,
prim.BSShape, shapeData, bodyCallback);
ret = newGeom || newBody;
}
DetailLog("{0},BSShapeCollection.GetBodyAndShape,force={1},ret={2},body={3},shape={4}",
prim.LocalID, forceRebuild, ret, prim.BSBody, prim.BSShape);
return ret;
}
// Count down the reference count for a mesh shape
// Called at taint-time.
private void DereferenceMesh(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
MeshDesc meshDesc;
if (Meshes.TryGetValue(shape.shapeKey, out meshDesc))
{
meshDesc.referenceCount--;
// TODO: release the Bullet storage
if (shapeCallback != null) shapeCallback(shape);
meshDesc.lastReferenced = System.DateTime.Now;
Meshes[shape.shapeKey] = meshDesc;
if (DDetail) DetailLog("{0},BSShapeCollection.DereferenceMesh,shape={1},refCnt={2}",
BSScene.DetailLogZero, shape, meshDesc.referenceCount);
}
}
// Create a mesh, hull or native shape.
// Return 'true' if the prim's shape was changed.
public bool CreateGeomNonSpecial(bool forceRebuild, BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
bool nativeShapePossible = true;
PrimitiveBaseShape pbs = prim.BaseShape;
// If the prim attributes are simple, this could be a simple Bullet native shape
if (!haveShape
&& nativeShapePossible
&& pbs != null
&& !pbs.SculptEntry
&& ((pbs.SculptEntry && !BSParam.ShouldMeshSculptedPrim) || PrimHasNoCuts(pbs)) )
{
// Get the scale of any existing shape so we can see if the new shape is same native type and same size.
OMV.Vector3 scaleOfExistingShape = OMV.Vector3.Zero;
if (prim.PhysShape.HasPhysicalShape)
scaleOfExistingShape = PhysicsScene.PE.GetLocalScaling(prim.PhysShape);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,maybeNative,force={1},primScale={2},primSize={3},primShape={4}",
prim.LocalID, forceRebuild, prim.Scale, prim.Size, prim.PhysShape.type);
// It doesn't look like Bullet scales native spheres so make sure the scales are all equal
if ((pbs.ProfileShape == ProfileShape.HalfCircle && pbs.PathCurve == (byte)Extrusion.Curve1)
&& pbs.Scale.X == pbs.Scale.Y && pbs.Scale.Y == pbs.Scale.Z)
{
haveShape = true;
if (forceRebuild
|| prim.Scale != scaleOfExistingShape
|| prim.PhysShape.type != BSPhysicsShapeType.SHAPE_SPHERE
)
{
ret = GetReferenceToNativeShape(prim, BSPhysicsShapeType.SHAPE_SPHERE,
FixedShapeKey.KEY_SPHERE, shapeCallback);
}
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},rebuilt={2},shape={3}",
prim.LocalID, forceRebuild, ret, prim.PhysShape);
}
if (!haveShape && pbs.ProfileShape == ProfileShape.Square && pbs.PathCurve == (byte)Extrusion.Straight)
{
haveShape = true;
if (forceRebuild
|| prim.Scale != scaleOfExistingShape
|| prim.PhysShape.type != BSPhysicsShapeType.SHAPE_BOX
)
{
ret = GetReferenceToNativeShape( prim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_BOX, shapeCallback);
}
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},rebuilt={2},shape={3}",
prim.LocalID, forceRebuild, ret, prim.PhysShape);
}
}
// If a simple shape is not happening, create a mesh and possibly a hull.
if (!haveShape && pbs != null)
{
ret = CreateGeomMeshOrHull(prim, shapeCallback);
}
return ret;
}
// Count down the reference count for a hull shape
// Called at taint-time.
private void DereferenceHull(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
HullDesc hullDesc;
if (Hulls.TryGetValue(shape.shapeKey, out hullDesc))
{
hullDesc.referenceCount--;
// TODO: release the Bullet storage (aging old entries?)
if (shapeCallback != null) shapeCallback(shape);
hullDesc.lastReferenced = System.DateTime.Now;
Hulls[shape.shapeKey] = hullDesc;
DetailLog("{0},BSShapeCollection.DereferenceHull,key={1},refCnt={2}",
BSScene.DetailLogZero, shape.shapeKey.ToString("X"), hullDesc.referenceCount);
}
}
// Release the usage of a shape.
// The collisionObject is released since it is a copy of the real collision shape.
public void DereferenceShape(BulletShape shape, bool atTaintTime, ShapeDestructionCallback shapeCallback)
{
if (shape.ptr == IntPtr.Zero)
return;
BSScene.TaintCallback dereferenceOperation = delegate()
{
switch (shape.type)
{
case ShapeData.PhysicsShapeType.SHAPE_HULL:
DereferenceHull(shape, shapeCallback);
break;
case ShapeData.PhysicsShapeType.SHAPE_MESH:
DereferenceMesh(shape, shapeCallback);
break;
case ShapeData.PhysicsShapeType.SHAPE_UNKNOWN:
break;
default:
// Native shapes are not tracked and are released immediately
if (shape.ptr != IntPtr.Zero & shape.isNativeShape)
{
DetailLog("{0},BSShapeCollection.DereferenceShape,deleteNativeShape,ptr={1},taintTime={2}",
BSScene.DetailLogZero, shape.ptr.ToString("X"), atTaintTime);
if (shapeCallback != null) shapeCallback(shape);
BulletSimAPI.DeleteCollisionShape2(PhysicsScene.World.ptr, shape.ptr);
}
break;
}
};
if (atTaintTime)
{
lock (m_collectionActivityLock)
{
dereferenceOperation();
}
}
else
{
PhysicsScene.TaintedObject("BSShapeCollection.DereferenceShape", dereferenceOperation);
}
}
// Called to update/change the body and shape for an object.
// First checks the shape and updates that if necessary then makes
// sure the body is of the right type.
// Return 'true' if either the body or the shape changed.
// 'shapeCallback' and 'bodyCallback' are, if non-null, functions called just before
// the current shape or body is destroyed. This allows the caller to remove any
// higher level dependencies on the shape or body. Mostly used for LinkSets to
// remove the physical constraints before the body is destroyed.
// Called at taint-time!!
public bool GetBodyAndShape(bool forceRebuild, BulletWorld sim, BSPhysObject prim,
ShapeDestructionCallback shapeCallback, BodyDestructionCallback bodyCallback)
{
PhysicsScene.AssertInTaintTime("BSShapeCollection.GetBodyAndShape");
bool ret = false;
// This lock could probably be pushed down lower but building shouldn't take long
lock (m_collectionActivityLock)
{
// Do we have the correct geometry for this type of object?
// Updates prim.BSShape with information/pointers to shape.
// Returns 'true' of BSShape is changed to a new shape.
bool newGeom = CreateGeom(forceRebuild, prim, shapeCallback);
// If we had to select a new shape geometry for the object,
// rebuild the body around it.
// Updates prim.BSBody with information/pointers to requested body
// Returns 'true' if BSBody was changed.
bool newBody = CreateBody((newGeom || forceRebuild), prim, PhysicsScene.World, bodyCallback);
ret = newGeom || newBody;
}
DetailLog("{0},BSShapeCollection.GetBodyAndShape,taintExit,force={1},ret={2},body={3},shape={4}",
prim.LocalID, forceRebuild, ret, prim.PhysBody, prim.PhysShape);
return ret;
}
// Creates a native shape and assignes it to prim.BSShape
private bool GetReferenceToNativeShape( BSPrim prim, ShapeData shapeData,
ShapeData.PhysicsShapeType shapeType, ShapeData.FixedShapeKey shapeKey,
ShapeDestructionCallback shapeCallback)
{
BulletShape newShape;
shapeData.Type = shapeType;
// Bullet native objects are scaled by the Bullet engine so pass the size in
prim.Scale = shapeData.Size;
shapeData.Scale = shapeData.Size;
// release any previous shape
DereferenceShape(prim.BSShape, true, shapeCallback);
// Native shapes are always built independently.
newShape = new BulletShape(BulletSimAPI.BuildNativeShape2(PhysicsScene.World.ptr, shapeData), shapeType);
newShape.shapeKey = (ulong)shapeKey;
newShape.isNativeShape = true;
// Don't need to do a 'ReferenceShape()' here because native shapes are not tracked.
// DetailLog("{0},BSShapeCollection.AddNativeShapeToPrim,create,newshape={1}", shapeData.ID, newShape);
prim.BSShape = newShape;
return true;
}
// Create the geometry information in Bullet for later use.
// The objects needs a hull if it's physical otherwise a mesh is enough.
// if 'forceRebuild' is true, the geometry is unconditionally rebuilt. For meshes and hulls,
// shared geometries will be used. If the parameters of the existing shape are the same
// as this request, the shape is not rebuilt.
// Info in prim.BSShape is updated to the new shape.
// Returns 'true' if the geometry was rebuilt.
// Called at taint-time!
private bool CreateGeom(bool forceRebuild, BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
if (!haveShape && prim.PreferredPhysicalShape == BSPhysicsShapeType.SHAPE_CAPSULE)
{
// an avatar capsule is close to a native shape (it is not shared)
GetReferenceToNativeShape(prim, BSPhysicsShapeType.SHAPE_CAPSULE, FixedShapeKey.KEY_CAPSULE, shapeCallback);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,avatarCapsule,shape={1}", prim.LocalID, prim.PhysShape);
ret = true;
haveShape = true;
}
// Compound shapes are handled special as they are rebuilt from scratch.
// This isn't too great a hardship since most of the child shapes will have already been created.
if (!haveShape && prim.PreferredPhysicalShape == BSPhysicsShapeType.SHAPE_COMPOUND)
{
ret = GetReferenceToCompoundShape(prim, shapeCallback);
if (DDetail) DetailLog("{0},BSShapeCollection.CreateGeom,compoundShape,shape={1}", prim.LocalID, prim.PhysShape);
haveShape = true;
}
if (!haveShape)
{
ret = CreateGeomNonSpecial(forceRebuild, prim, shapeCallback);
}
return ret;
}
// Creates a native shape and assignes it to prim.BSShape.
// "Native" shapes are never shared. they are created here and destroyed in DereferenceShape().
private bool GetReferenceToNativeShape(BSPhysObject prim, ShapeData shapeData,
ShapeData.PhysicsShapeType shapeType, ShapeData.FixedShapeKey shapeKey,
ShapeDestructionCallback shapeCallback)
{
// release any previous shape
DereferenceShape(prim.BSShape, true, shapeCallback);
shapeData.Type = shapeType;
// Bullet native objects are scaled by the Bullet engine so pass the size in
prim.Scale = shapeData.Size;
shapeData.Scale = shapeData.Size;
BulletShape newShape = BuildPhysicalNativeShape(shapeType, shapeData, shapeKey);
// Don't need to do a 'ReferenceShape()' here because native shapes are not shared.
DetailLog("{0},BSShapeCollection.AddNativeShapeToPrim,create,newshape={1},scale={2}",
shapeData.ID, newShape, shapeData.Scale);
prim.BSShape = newShape;
return true;
}
// Remove a reference to a compound shape.
// Taking a compound shape apart is a little tricky because if you just delete the
// physical shape, it will free all the underlying children. We can't do that because
// they could be shared. So, this removes each of the children from the compound and
// dereferences them separately before destroying the compound collision object itself.
// Called at taint-time.
private void DereferenceCompound(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
if (!PhysicsScene.PE.IsCompound(shape))
{
// Failed the sanity check!!
PhysicsScene.Logger.ErrorFormat("{0} Attempt to free a compound shape that is not compound!! type={1}, ptr={2}",
LogHeader, shape.type, shape.AddrString);
if (DDetail) DetailLog("{0},BSShapeCollection.DereferenceCompound,notACompoundShape,type={1},ptr={2}",
BSScene.DetailLogZero, shape.type, shape.AddrString);
return;
}
int numChildren = PhysicsScene.PE.GetNumberOfCompoundChildren(shape);
if (DDetail) DetailLog("{0},BSShapeCollection.DereferenceCompound,shape={1},children={2}", BSScene.DetailLogZero, shape, numChildren);
for (int ii = numChildren - 1; ii >= 0; ii--)
{
BulletShape childShape = PhysicsScene.PE.RemoveChildShapeFromCompoundShapeIndex(shape, ii);
DereferenceAnonCollisionShape(childShape);
}
PhysicsScene.PE.DeleteCollisionShape(PhysicsScene.World, shape);
}
// See that hull shape exists in the physical world and update prim.BSShape.
// We could be creating the hull because scale changed or whatever.
// Return 'true' if a new hull was built. Otherwise, returning a shared hull instance.
private bool GetReferenceToHull(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
BulletShape newShape;
float lod;
System.UInt64 newHullKey = ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
// if the hull hasn't changed, don't rebuild it
if (newHullKey == prim.PhysShape.shapeKey && prim.PhysShape.type == BSPhysicsShapeType.SHAPE_HULL)
return false;
if (DDetail) DetailLog("{0},BSShapeCollection.GetReferenceToHull,create,oldKey={1},newKey={2}",
prim.LocalID, prim.PhysShape.shapeKey.ToString("X"), newHullKey.ToString("X"));
// Remove usage of the previous shape.
DereferenceShape(prim.PhysShape, shapeCallback);
newShape = CreatePhysicalHull(prim.PhysObjectName, newHullKey, prim.BaseShape, prim.Size, lod);
// It might not have been created if we're waiting for an asset.
newShape = VerifyMeshCreated(newShape, prim);
ReferenceShape(newShape);
prim.PhysShape = newShape;
return true; // 'true' means a new shape has been added to this prim
}
// Compound shapes are always built from scratch.
// This shouldn't be to bad since most of the parts will be meshes that had been built previously.
private bool GetReferenceToCompoundShape(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
// Remove reference to the old shape
// Don't need to do this as the shape is freed when the new root shape is created below.
// DereferenceShape(prim.PhysShape, true, shapeCallback);
BulletShape cShape = PhysicsScene.PE.CreateCompoundShape(PhysicsScene.World, false);
// Create the shape for the root prim and add it to the compound shape. Cannot be a native shape.
CreateGeomMeshOrHull(prim, shapeCallback);
PhysicsScene.PE.AddChildShapeToCompoundShape(cShape, prim.PhysShape, OMV.Vector3.Zero, OMV.Quaternion.Identity);
if (DDetail) DetailLog("{0},BSShapeCollection.GetReferenceToCompoundShape,addRootPrim,compShape={1},rootShape={2}",
prim.LocalID, cShape, prim.PhysShape);
prim.PhysShape = cShape;
return true;
}
// Create the geometry information in Bullet for later use.
// The objects needs a hull if it's physical otherwise a mesh is enough.
// No locking here because this is done when we know physics is not simulating.
// if 'forceRebuild' is true, the geometry is rebuilt. Otherwise a previously built version is used.
// Returns 'true' if the geometry was rebuilt.
// Called at taint-time!
private bool CreateGeom(bool forceRebuild, BSPrim prim, ShapeData shapeData,
PrimitiveBaseShape pbs, ShapeDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
bool nativeShapePossible = true;
// If the prim attributes are simple, this could be a simple Bullet native shape
if (nativeShapePossible
&& ((pbs.SculptEntry && !PhysicsScene.ShouldMeshSculptedPrim)
|| (pbs.ProfileBegin == 0 && pbs.ProfileEnd == 0
&& pbs.ProfileHollow == 0
&& pbs.PathTwist == 0 && pbs.PathTwistBegin == 0
&& pbs.PathBegin == 0 && pbs.PathEnd == 0
&& pbs.PathTaperX == 0 && pbs.PathTaperY == 0
&& pbs.PathScaleX == 100 && pbs.PathScaleY == 100
&& pbs.PathShearX == 0 && pbs.PathShearY == 0) ) )
{
if (pbs.ProfileShape == ProfileShape.HalfCircle && pbs.PathCurve == (byte)Extrusion.Curve1)
{
haveShape = true;
if (forceRebuild
|| prim.Scale != shapeData.Size
|| prim.BSShape.type != ShapeData.PhysicsShapeType.SHAPE_SPHERE
)
{
ret = GetReferenceToNativeShape(prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_SPHERE,
ShapeData.FixedShapeKey.KEY_SPHERE, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},shape={2}",
prim.LocalID, forceRebuild, prim.BSShape);
}
}
else
{
haveShape = true;
if (forceRebuild
|| prim.Scale != shapeData.Size
|| prim.BSShape.type != ShapeData.PhysicsShapeType.SHAPE_BOX
)
{
ret = GetReferenceToNativeShape( prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_BOX,
ShapeData.FixedShapeKey.KEY_BOX, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},shape={2}",
prim.LocalID, forceRebuild, prim.BSShape);
}
}
}
// If a simple shape is not happening, create a mesh and possibly a hull.
// Note that if it's a native shape, the check for physical/non-physical is not
// made. Native shapes are best used in either case.
if (!haveShape)
{
if (prim.IsPhysical)
{
// Update prim.BSShape to reference a hull of this shape.
ret = GetReferenceToHull(prim, shapeData, pbs, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
shapeData.ID, prim.BSShape, prim.BSShape.shapeKey.ToString("X"));
}
else
{
ret = GetReferenceToMesh(prim, shapeData, pbs, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
shapeData.ID, prim.BSShape, prim.BSShape.shapeKey.ToString("X"));
}
}
return ret;
}
// Release the usage of a shape.
public void DereferenceShape(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
if (!shape.HasPhysicalShape)
return;
PhysicsScene.AssertInTaintTime("BSShapeCollection.DereferenceShape");
if (shape.HasPhysicalShape)
{
if (shape.isNativeShape)
{
// Native shapes are not tracked and are released immediately
if (DDetail) DetailLog("{0},BSShapeCollection.DereferenceShape,deleteNativeShape,ptr={1}",
BSScene.DetailLogZero, shape.AddrString);
if (shapeCallback != null) shapeCallback(shape);
PhysicsScene.PE.DeleteCollisionShape(PhysicsScene.World, shape);
}
else
{
switch (shape.type)
{
case BSPhysicsShapeType.SHAPE_HULL:
DereferenceHull(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_MESH:
DereferenceMesh(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_COMPOUND:
DereferenceCompound(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_UNKNOWN:
break;
default:
break;
}
}
}
}
// Create the geometry information in Bullet for later use.
// The objects needs a hull if it's physical otherwise a mesh is enough.
// No locking here because this is done when we know physics is not simulating.
// if 'forceRebuild' is true, the geometry is rebuilt. Otherwise a previously built version is used.
// Returns 'true' if the geometry was rebuilt.
// Called at taint-time!
private bool CreateGeom(bool forceRebuild, BSPrim prim, ShapeData shapeData,
PrimitiveBaseShape pbs, ShapeDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
bool nativeShapePossible = true;
// If the prim attributes are simple, this could be a simple Bullet native shape
if (nativeShapePossible &&
((pbs.SculptEntry && !PhysicsScene.ShouldMeshSculptedPrim) ||
(pbs.ProfileBegin == 0 && pbs.ProfileEnd == 0 &&
pbs.ProfileHollow == 0 &&
pbs.PathTwist == 0 && pbs.PathTwistBegin == 0 &&
pbs.PathBegin == 0 && pbs.PathEnd == 0 &&
pbs.PathTaperX == 0 && pbs.PathTaperY == 0 &&
pbs.PathScaleX == 100 && pbs.PathScaleY == 100 &&
pbs.PathShearX == 0 && pbs.PathShearY == 0)))
{
if (pbs.ProfileShape == ProfileShape.HalfCircle && pbs.PathCurve == (byte)Extrusion.Curve1)
{
haveShape = true;
if (forceRebuild ||
prim.Scale != shapeData.Size ||
prim.BSShape.type != ShapeData.PhysicsShapeType.SHAPE_SPHERE
)
{
ret = GetReferenceToNativeShape(prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_SPHERE,
ShapeData.FixedShapeKey.KEY_SPHERE, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},shape={2}",
prim.LocalID, forceRebuild, prim.BSShape);
}
}
else
{
haveShape = true;
if (forceRebuild ||
prim.Scale != shapeData.Size ||
prim.BSShape.type != ShapeData.PhysicsShapeType.SHAPE_BOX
)
{
ret = GetReferenceToNativeShape(prim, shapeData, ShapeData.PhysicsShapeType.SHAPE_BOX,
ShapeData.FixedShapeKey.KEY_BOX, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},shape={2}",
prim.LocalID, forceRebuild, prim.BSShape);
}
}
}
// If a simple shape is not happening, create a mesh and possibly a hull.
// Note that if it's a native shape, the check for physical/non-physical is not
// made. Native shapes are best used in either case.
if (!haveShape)
{
if (prim.IsPhysical)
{
// Update prim.BSShape to reference a hull of this shape.
ret = GetReferenceToHull(prim, shapeData, pbs, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,hull,shape={1},key={2}",
shapeData.ID, prim.BSShape, prim.BSShape.shapeKey.ToString("X"));
}
else
{
ret = GetReferenceToMesh(prim, shapeData, pbs, shapeCallback);
DetailLog("{0},BSShapeCollection.CreateGeom,mesh,shape={1},key={2}",
shapeData.ID, prim.BSShape, prim.BSShape.shapeKey.ToString("X"));
}
}
return(ret);
}
// Create a mesh/hull shape or a native shape if 'nativeShapePossible' is 'true'.
public bool CreateGeomNonSpecial(bool forceRebuild, BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
bool ret = false;
bool haveShape = false;
bool nativeShapePossible = true;
PrimitiveBaseShape pbs = prim.BaseShape;
// If the prim attributes are simple, this could be a simple Bullet native shape
if (!haveShape &&
pbs != null &&
nativeShapePossible &&
((pbs.SculptEntry && !BSParam.ShouldMeshSculptedPrim) ||
(pbs.ProfileBegin == 0 && pbs.ProfileEnd == 0 &&
pbs.ProfileHollow == 0 &&
pbs.PathTwist == 0 && pbs.PathTwistBegin == 0 &&
pbs.PathBegin == 0 && pbs.PathEnd == 0 &&
pbs.PathTaperX == 0 && pbs.PathTaperY == 0 &&
pbs.PathScaleX == 100 && pbs.PathScaleY == 100 &&
pbs.PathShearX == 0 && pbs.PathShearY == 0)))
{
// Get the scale of any existing shape so we can see if the new shape is same native type and same size.
OMV.Vector3 scaleOfExistingShape = OMV.Vector3.Zero;
if (prim.PhysShape.HasPhysicalShape)
{
scaleOfExistingShape = BulletSimAPI.GetLocalScaling2(prim.PhysShape.ptr);
}
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,maybeNative,force={1},primScale={2},primSize={3},primShape={4}",
prim.LocalID, forceRebuild, prim.Scale, prim.Size, prim.PhysShape.type);
}
// It doesn't look like Bullet scales spheres so make sure the scales are all equal
if ((pbs.ProfileShape == ProfileShape.HalfCircle && pbs.PathCurve == (byte)Extrusion.Curve1) &&
pbs.Scale.X == pbs.Scale.Y && pbs.Scale.Y == pbs.Scale.Z)
{
haveShape = true;
if (forceRebuild ||
prim.Scale != scaleOfExistingShape ||
prim.PhysShape.type != BSPhysicsShapeType.SHAPE_SPHERE
)
{
ret = GetReferenceToNativeShape(prim, BSPhysicsShapeType.SHAPE_SPHERE,
FixedShapeKey.KEY_SPHERE, shapeCallback);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,sphere,force={1},shape={2}",
prim.LocalID, forceRebuild, prim.PhysShape);
}
}
}
if (!haveShape && pbs.ProfileShape == ProfileShape.Square && pbs.PathCurve == (byte)Extrusion.Straight)
{
haveShape = true;
if (forceRebuild ||
prim.Scale != scaleOfExistingShape ||
prim.PhysShape.type != BSPhysicsShapeType.SHAPE_BOX
)
{
ret = GetReferenceToNativeShape(prim, BSPhysicsShapeType.SHAPE_BOX,
FixedShapeKey.KEY_BOX, shapeCallback);
if (DDetail)
{
DetailLog("{0},BSShapeCollection.CreateGeom,box,force={1},shape={2}",
prim.LocalID, forceRebuild, prim.PhysShape);
}
}
}
}
// If a simple shape is not happening, create a mesh and possibly a hull.
if (!haveShape && pbs != null)
{
ret = CreateGeomMeshOrHull(prim, shapeCallback);
}
return(ret);
}
// Builds a mesh shape in the physical world and updates prim.BSShape.
// Dereferences previous shape in BSShape and adds a reference for this new shape.
// Returns 'true' of a mesh was actually built. Otherwise .
// Called at taint-time!
private bool GetReferenceToMesh(BSPhysObject prim, ShapeDestructionCallback shapeCallback)
{
BulletShape newShape = new BulletShape();
float lod;
System.UInt64 newMeshKey = ComputeShapeKey(prim.Size, prim.BaseShape, out lod);
// if this new shape is the same as last time, don't recreate the mesh
if (newMeshKey == prim.PhysShape.shapeKey && prim.PhysShape.type == BSPhysicsShapeType.SHAPE_MESH)
return false;
if (DDetail) DetailLog("{0},BSShapeCollection.GetReferenceToMesh,create,oldKey={1},newKey={2},size={3},lod={4}",
prim.LocalID, prim.PhysShape.shapeKey.ToString("X"), newMeshKey.ToString("X"), prim.Size, lod);
// Since we're recreating new, get rid of the reference to the previous shape
DereferenceShape(prim.PhysShape, shapeCallback);
newShape = CreatePhysicalMesh(prim, newMeshKey, prim.BaseShape, prim.Size, lod);
// Take evasive action if the mesh was not constructed.
newShape = VerifyMeshCreated(newShape, prim);
ReferenceShape(newShape);
prim.PhysShape = newShape;
return true; // 'true' means a new shape has been added to this prim
}
// Count down the reference count for a hull shape
// Called at taint-time.
private void DereferenceHull(BulletShape shape, ShapeDestructionCallback shapeCallback)
{
HullDesc hullDesc;
if (Hulls.TryGetValue(shape.shapeKey, out hullDesc))
{
hullDesc.referenceCount--;
// TODO: release the Bullet storage (aging old entries?)
// Tell upper layers that, if they have dependencies on this shape, this link is going away
if (shapeCallback != null) shapeCallback(shape);
hullDesc.lastReferenced = System.DateTime.Now;
Hulls[shape.shapeKey] = hullDesc;
if (DDetail) DetailLog("{0},BSShapeCollection.DereferenceHull,shape={1},refCnt={2}",
BSScene.DetailLogZero, shape, hullDesc.referenceCount);
}
}
// Creates a native shape and assignes it to prim.BSShape.
// "Native" shapes are never shared. they are created here and destroyed in DereferenceShape().
private bool GetReferenceToNativeShape(BSPhysObject prim,
BSPhysicsShapeType shapeType, FixedShapeKey shapeKey,
ShapeDestructionCallback shapeCallback)
{
// release any previous shape
DereferenceShape(prim.PhysShape, shapeCallback);
BulletShape newShape = BuildPhysicalNativeShape(prim, shapeType, shapeKey);
// Don't need to do a 'ReferenceShape()' here because native shapes are not shared.
if (DDetail) DetailLog("{0},BSShapeCollection.AddNativeShapeToPrim,create,newshape={1},scale={2}",
prim.LocalID, newShape, prim.Scale);
// native shapes are scaled by Bullet
prim.PhysShape = newShape;
return true;
}
// Release the usage of a shape.
public void DereferenceShape(BulletShape shape, bool inTaintTime, ShapeDestructionCallback shapeCallback)
{
if (!shape.HasPhysicalShape)
return;
PhysicsScene.TaintedObject(inTaintTime, "BSShapeCollection.DereferenceShape", delegate()
{
if (shape.HasPhysicalShape)
{
if (shape.isNativeShape)
{
// Native shapes are not tracked and are released immediately
if (DDetail) DetailLog("{0},BSShapeCollection.DereferenceShape,deleteNativeShape,ptr={1},taintTime={2}",
BSScene.DetailLogZero, shape.ptr.ToString(), inTaintTime);
if (shapeCallback != null) shapeCallback(shape);
BulletSimAPI.DeleteCollisionShape2(PhysicsScene.World.ptr, shape.ptr);
}
else
{
switch (shape.type)
{
case BSPhysicsShapeType.SHAPE_HULL:
DereferenceHull(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_MESH:
DereferenceMesh(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_COMPOUND:
DereferenceCompound(shape, shapeCallback);
break;
case BSPhysicsShapeType.SHAPE_UNKNOWN:
break;
default:
break;
}
}
}
});
}
