internal bool TryGetCachedShape(ulong meshHash, OpenSim.Framework.PrimitiveBaseShape shape, bool isDynamic, out PhysicsShape phyShape)
{
ShapeCache cache = FindCorrespondingCache(ShapeDeterminer.FindBestShape(shape, isDynamic));
if (cache != null)
{
return(cache.TryGetShape(meshHash, out phyShape));
}
phyShape = null;
return(false);
}
public void Execute(MeshingStage meshingStage)
{
//short circuit null shapes
if (Shape.PreferredPhysicsShape == OpenMetaverse.PhysicsShapeType.None)
{
this.CompletedDelegate(PhysicsShape.Null);
return;
}
ulong meshHash = Shape.GetMeshKey(Size, MeshingStage.SCULPT_MESH_LOD);
//check to see if we have this shape in the cache
PhysicsShape phyShape;
if (meshingStage.TryGetCachedShape(meshHash, Shape, IsDynamic, out phyShape))
{
phyShape.AddRef();
//we are done here, call back to caller
this.CompletedDelegate(phyShape);
return;
}
int meshingBegan = Environment.TickCount;
var bestShape = ShapeDeterminer.FindBestShape(Shape, IsDynamic);
//first try to extract serialized shapes
if (!TryExtractSerializedShapes(meshingStage, meshHash, bestShape))
{
//failure, generate
GenerateShapes(meshingStage, meshHash, bestShape);
}
if (Settings.Instance.InstrumentMeshing)
{
m_log.InfoFormat("[STATS]: PHYSX_MESHING_TIME,{0},{1}", bestShape, Environment.TickCount - meshingBegan);
}
}
private List <PhysX.ConvexMeshGeometry> GenerateComplexPhysXShape(ulong meshHash, string primName, PrimitiveBaseShape shape, OpenMetaverse.Vector3 size,
float LOD, bool isDynamic)
{
//create the mesh and do not prescale it. the ACD algorithm can then cache the output hulls and
//scale as appropriate
MeshingResult result = _mesher.CreateMesh(primName, shape, size, LOD, ShapeType.DecomposedConvexHulls, false);
if (result == null)
{
return(null);
}
HacdConvexHull[] hulls = null;
if (result.ResultType == ShapeType.TriMesh)
{
IMesh mesh = result.TriMesh;
if (mesh == null)
{
return(null);
}
//Debugging.VrmlGenerator.SaveToVrmlFile("lastMesh.wrl", mesh.getVertexListAsArray(), mesh.getTriangleList());
switch (ShapeDeterminer.FindBestAcdAlgorithm(shape))
{
case ShapeDeterminer.AcdAlgorithm.HACD:
hulls = DecomposeWithHACD(shape, LOD, mesh);
break;
case ShapeDeterminer.AcdAlgorithm.RATCLIFF:
hulls = DecomposeWithRatcliff(shape, LOD, mesh);
break;
default:
throw new PhysxSdkException("GenerateComplexPhysXShape(): Specified ACD algorithm does not exist");
}
if (hulls == null)
{
return(null);
}
}
else if (result.ResultType == ShapeType.DecomposedConvexHulls)
{
hulls = new HacdConvexHull[result.ConvexVerts.Count];
for (int i = 0; i < result.ConvexVerts.Count; i++)
{
hulls[i] = new HacdConvexHull {
Vertices = new PhysX.Math.Vector3[result.ConvexVerts[i].Count]
};
for (int j = 0; j < result.ConvexVerts[i].Count; j++)
{
var vert = result.ConvexVerts[i][j];
hulls[i].Vertices[j] = new PhysX.Math.Vector3(vert.X, vert.Y, vert.Z);
}
}
}
else
{
return(null);
}
HacdConvexHull.Scale(size, hulls);
List <PhysX.ConvexMeshGeometry> ret = new List <PhysX.ConvexMeshGeometry>();
try
{
foreach (HacdConvexHull hull in hulls)
{
PhysX.ConvexMeshDesc convexMeshDesc = new PhysX.ConvexMeshDesc()
{
Flags = PhysX.ConvexFlag.InflateConvex
};
if (hull.Indicies == null)
{
convexMeshDesc.Flags |= PhysX.ConvexFlag.ComputeConvex;
}
convexMeshDesc.SetPositions(hull.Vertices);
if (hull.Indicies != null)
{
convexMeshDesc.SetTriangles(hull.Indicies);
}
if (!convexMeshDesc.IsValid())
{
throw new PhysxSdkException("GenerateComplexPhysXShape: Convex mesh description is invalid");
}
using (MemoryStream ms = new MemoryStream())
{
if (!_cooking.CookConvexMesh(convexMeshDesc, ms))
{
throw new PhysxSdkException("GenerateComplexPhysXShape: CookConvexMesh() failed");
}
ms.Position = 0;
PhysX.ConvexMesh convexMesh = _scene.Physics.CreateConvexMesh(ms);
PhysX.ConvexMeshGeometry convexShapeGeom = new PhysX.ConvexMeshGeometry(convexMesh);
ret.Add(convexShapeGeom);
}
}
}
catch (Exception e)
{
m_log.WarnFormat("[InWorldz.PhysxPhysics] Unable to create convex hullset for shape: {0}", e);
result = _mesher.CreateMesh(primName, shape, size, LOD, ShapeType.SingleConvex, true);
if (result == null)
{
m_log.WarnFormat("[InWorldz.PhysxPhysics] Fallback hull generation failed, giving up", e);
return(null);
}
//direct convex available?
if (result.ResultType == ShapeType.SingleConvex)
{
if (!TryGenerateFallbackHullFromHullData(ret, e, result.SingleConvex))
{
return(null);
}
}
else if (result.ResultType == ShapeType.TriMesh)
{
IMesh mesh = result.TriMesh;
if (mesh == null)
{
m_log.WarnFormat("[InWorldz.PhysxPhysics] Fallback hull generation failed, giving up", e);
return(null);
}
if (!TryGenerateFallbackHullFromTrimesh(ret, e, mesh))
{
return(null);
}
}
}
return(ret);
}
