public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache, out List<List<Vector3>> hulls, out List<Vector3> boundingHull)
{
#if SPAM
m_log.DebugFormat("[MESH]: Creating mesh for {0}", primName);
#endif
Mesh mesh = null;
ulong key = 0;
// If this mesh has been created already, return it instead of creating another copy
// For large regions with 100k+ prims and hundreds of copies of each, this can save a GB or more of memory
m_uniqueMeshesRwLock.AcquireReaderLock(-1);
try
{
if (shouldCache)
{
key = primShape.GetMeshKey(size, lod);
if (m_uniqueMeshes.TryGetValue(key, out mesh))
{
m_uniqueMeshesBoundingHulls.TryGetValue(key, out boundingHull);
m_uniqueMeshesHulls.TryGetValue(key, out hulls);
return mesh;
}
}
LockCookie lc = m_uniqueMeshesRwLock.UpgradeToWriterLock(-1);
try
{
/* recheck since we allow a lot of threading here */
if (shouldCache)
{
if (m_uniqueMeshes.TryGetValue(key, out mesh))
{
m_uniqueMeshesBoundingHulls.TryGetValue(key, out boundingHull);
m_uniqueMeshesHulls.TryGetValue(key, out hulls);
return mesh;
}
}
if (size.X < 0.01f) size.X = 0.01f;
if (size.Y < 0.01f) size.Y = 0.01f;
if (size.Z < 0.01f) size.Z = 0.01f;
List<List<Vector3>> inhulls;
List<Vector3> inboundingHull;
mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod, out inhulls, out inboundingHull);
if (inhulls != null)
{
hulls = new List<List<Vector3>>();
foreach (var hull in inhulls)
{
List<Vector3> verts = new List<Vector3>();
foreach (var vert in hull)
verts.Add(vert * size);
hulls.Add(verts);
}
}
else
{
hulls = null;
}
if (inboundingHull != null)
{
boundingHull = new List<Vector3>();
foreach (var vert in inboundingHull)
boundingHull.Add(vert * size);
}
else
{
boundingHull = null;
}
if (mesh != null)
{
if ((!isPhysical) && size.X < minSizeForComplexMesh && size.Y < minSizeForComplexMesh && size.Z < minSizeForComplexMesh)
{
#if SPAM
m_log.Debug("Meshmerizer: prim " + primName + " has a size of " + size.ToString() + " which is below threshold of " +
minSizeForComplexMesh.ToString() + " - creating simple bounding box");
#endif
mesh = CreateBoundingBoxMesh(mesh);
mesh.DumpRaw(baseDir, primName, "Z extruded");
}
// trim the vertex and triangle lists to free up memory
mesh.TrimExcess();
if (shouldCache)
{
m_uniqueMeshes.Add(key, mesh);
m_uniqueMeshesHulls.Add(key, hulls);
m_uniqueMeshesBoundingHulls.Add(key, boundingHull);
}
}
}
finally
{
m_uniqueMeshesRwLock.DowngradeFromWriterLock(ref lc);
}
}
finally
{
m_uniqueMeshesRwLock.ReleaseReaderLock();
}
return mesh;
}
// Create a hash of all the shape parameters to be used as a key for this particular shape.
public static System.UInt64 ComputeShapeKey(OMV.Vector3 size, PrimitiveBaseShape pbs, out float retLod)
{
// level of detail based on size and type of the object
float lod = BSParam.MeshLOD;
if (pbs.SculptEntry)
lod = BSParam.SculptLOD;
// Mega prims usually get more detail because one can interact with shape approximations at this size.
float maxAxis = Math.Max(size.X, Math.Max(size.Y, size.Z));
if (maxAxis > BSParam.MeshMegaPrimThreshold)
lod = BSParam.MeshMegaPrimLOD;
retLod = lod;
return pbs.GetMeshKey(size, lod);
}
// Create a hash of all the shape parameters to be used as a key
// for this particular shape.
private ulong ComputeShapeKey(ShapeData shapeData, PrimitiveBaseShape pbs, out float retLod)
{
// level of detail based on size and type of the object
float lod = PhysicsScene.MeshLOD;
if (pbs.SculptEntry)
lod = PhysicsScene.SculptLOD;
float maxAxis = Math.Max(shapeData.Size.X, Math.Max(shapeData.Size.Y, shapeData.Size.Z));
if (maxAxis > PhysicsScene.MeshMegaPrimThreshold)
lod = PhysicsScene.MeshMegaPrimLOD;
retLod = lod;
return (ulong)pbs.GetMeshKey(shapeData.Size, lod);
}
public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod, bool isPhysical, bool shouldCache)
{
#if SPAM
m_log.DebugFormat("[MESH]: Creating mesh for {0}", primName);
#endif
Mesh mesh = null;
ulong key = 0;
// If this mesh has been created already, return it instead of creating another copy
// For large regions with 100k+ prims and hundreds of copies of each, this can save a GB or more of memory
if (shouldCache)
{
key = primShape.GetMeshKey(size, lod);
lock (m_uniqueMeshes)
{
if (m_uniqueMeshes.TryGetValue(key, out mesh))
return mesh;
}
}
if (size.X < 0.01f) size.X = 0.01f;
if (size.Y < 0.01f) size.Y = 0.01f;
if (size.Z < 0.01f) size.Z = 0.01f;
mesh = CreateMeshFromPrimMesher(primName, primShape, size, lod);
if (mesh != null)
{
if ((!isPhysical) && size.X < minSizeForComplexMesh && size.Y < minSizeForComplexMesh && size.Z < minSizeForComplexMesh)
{
#if SPAM
m_log.Debug("Meshmerizer: prim " + primName + " has a size of " + size.ToString() + " which is below threshold of " +
minSizeForComplexMesh.ToString() + " - creating simple bounding box");
#endif
mesh = CreateBoundingBoxMesh(mesh);
mesh.DumpRaw(baseDir, primName, "Z extruded");
}
// trim the vertex and triangle lists to free up memory
mesh.TrimExcess();
if (shouldCache)
{
lock (m_uniqueMeshes)
{
m_uniqueMeshes.Add(key, mesh);
}
}
}
return mesh;
}
public MeshingResult CreateMeshFromPrimMesher(string primName, PrimitiveBaseShape primShape, OpenMetaverse.Vector3 size, float lod, ShapeType desiredShape, bool preScale)
{
Vector3 szvec = new Vector3(size.X, size.Y, size.Z);
ulong meshKey = primShape.GetMeshKey(szvec, lod);
try
{
if (primShape.SculptEntry && ((primShape.SculptData == null) || (primShape.SculptData.Length == 0)))
{
//preload the sculpt/mesh data
AssetBase asset = _assetCache.GetAsset(primShape.SculptTexture, AssetRequestInfo.InternalRequest());
if (asset == null)
{
return null;
}
primShape.SculptData = asset.Data;
}
if (primShape.SculptEntry == false ||
(primShape.SculptEntry == true && (SculptType)primShape.SculptType != SculptType.Mesh))
{
return ExtractTrimeshFromPrimOrSculpt(primName, primShape, ref size, lod, preScale, meshKey);
}
else //mesh
{
return ExtractMeshingResultFromMesh(primName, primShape, ref size, lod, preScale, desiredShape, meshKey);
}
}
finally
{
//we dont need the sculpt data around anymore
primShape.SculptData = null;
}
}
// Create a hash of all the shape parameters to be used as a key
// for this particular shape.
private System.UInt64 ComputeShapeKey(ShapeData shapeData, PrimitiveBaseShape pbs, out float retLod)
{
// level of detail based on size and type of the object
float lod = PhysicsScene.MeshLOD;
if (pbs.SculptEntry)
lod = PhysicsScene.SculptLOD;
// Mega prims usually get more detail because one can interact with shape approximations at this size.
float maxAxis = Math.Max(shapeData.Size.X, Math.Max(shapeData.Size.Y, shapeData.Size.Z));
if (maxAxis > PhysicsScene.MeshMegaPrimThreshold)
lod = PhysicsScene.MeshMegaPrimLOD;
retLod = lod;
return pbs.GetMeshKey(shapeData.Size, lod);
}
private static HacdConvexHull[] DecomposeWithHACD(PrimitiveBaseShape shape, float LOD, IMesh mesh)
{
int[] indexes = mesh.getIndexListAsInt();
float[] verts = mesh.getVertexListAsFloat();
mesh.ReleaseSourceMeshData();
HacdPreset preset;
if (shape.SculptEntry)
{
preset = Hacd.SculptDefaultPreset;
}
else
{
preset = Hacd.PrimDefaultPreset;
}
//we cant use the hash we have here, as Hacd needs the mesh hash prescaled
HacdConvexHull[] hulls = Hacd.DecomposeToConvexHulls(shape.GetMeshKey(OpenMetaverse.Vector3.One, LOD), shape.SculptEntry == false, preset, verts, indexes);
return hulls;
}
private HacdConvexHull[] DecomposeWithRatcliff(PrimitiveBaseShape shape, float LOD, IMesh mesh)
{
List<int> indexes = mesh.getIndexListAsIntList();
List<float3> verts = mesh.getVertexListAsFloat3();
RatcliffACD rcAcd = new RatcliffACD();
HacdConvexHull[] hulls = rcAcd.DecomposeToConvexHulls(shape.GetMeshKey(OpenMetaverse.Vector3.One, LOD), true, verts, indexes);
return hulls;
}
