/// <summary>
/// Removes and returns the old child shape associated with the given prim
/// </summary>
/// <param name="physxPrim">The child prim</param>
/// <returns>The old shape</returns>
private PhysicsShape RemoveChildShape(PhysxPrim physxPrim)
{
PhysicsShape retShape = null;
RelatedShapes childShapes;
if (_childShapes.TryGetValue(physxPrim, out childShapes))
{
physxPrim.ClearTrackedTouches();
_scene.ForEachCharacter((PhysxCharacter character) =>
{
character.InvalidateControllerCacheIfContacting(this);
}
);
retShape = childShapes.ChildShape;
foreach (PhysX.Shape shape in childShapes.PhyShapes)
{
shape.Dispose();
_shapeToPrimIndex.Remove(shape);
}
_childShapes.Remove(physxPrim);
//collision accounting
if (physxPrim._properties.WantsCollisionNotification)
{
if (--_numChildPrimsWantingCollisionNotification == 0)
{
_properties.ChildrenWantCollisionNotification = false;
}
}
}
return retShape;
}
