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Move GetMeshKey from buried inside Meshmerizer to a public method on PrimitiveBaseShape 

Signed-off-by: BlueWall <jamesh@bluewallgroup.com>
bulletsim
Robert Adams 2011-08-26 20:51:05 -07:00 committed by BlueWall
parent 80a2b81d52
commit 18037d41c4
2 changed files with 62 additions and 62 deletions
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61
OpenSim/Framework/PrimitiveBaseShape.cs
View File

@ -859,6 +859,67 @@ namespace OpenSim.Framework
}
}
public ulong GetMeshKey(Vector3 size, float lod)
{
ulong hash = 5381;
hash = djb2(hash, this.PathCurve);
hash = djb2(hash, (byte)((byte)this.HollowShape | (byte)this.ProfileShape));
hash = djb2(hash, this.PathBegin);
hash = djb2(hash, this.PathEnd);
hash = djb2(hash, this.PathScaleX);
hash = djb2(hash, this.PathScaleY);
hash = djb2(hash, this.PathShearX);
hash = djb2(hash, this.PathShearY);
hash = djb2(hash, (byte)this.PathTwist);
hash = djb2(hash, (byte)this.PathTwistBegin);
hash = djb2(hash, (byte)this.PathRadiusOffset);
hash = djb2(hash, (byte)this.PathTaperX);
hash = djb2(hash, (byte)this.PathTaperY);
hash = djb2(hash, this.PathRevolutions);
hash = djb2(hash, (byte)this.PathSkew);
hash = djb2(hash, this.ProfileBegin);
hash = djb2(hash, this.ProfileEnd);
hash = djb2(hash, this.ProfileHollow);
// TODO: Separate scale out from the primitive shape data (after
// scaling is supported at the physics engine level)
byte[] scaleBytes = size.GetBytes();
for (int i = 0; i < scaleBytes.Length; i++)
hash = djb2(hash, scaleBytes[i]);
// Include LOD in hash, accounting for endianness
byte[] lodBytes = new byte[4];
Buffer.BlockCopy(BitConverter.GetBytes(lod), 0, lodBytes, 0, 4);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(lodBytes, 0, 4);
}
for (int i = 0; i < lodBytes.Length; i++)
hash = djb2(hash, lodBytes[i]);
// include sculpt UUID
if (this.SculptEntry)
{
scaleBytes = this.SculptTexture.GetBytes();
for (int i = 0; i < scaleBytes.Length; i++)
hash = djb2(hash, scaleBytes[i]);
}
return hash;
}
private ulong djb2(ulong hash, byte c)
{
return ((hash << 5) + hash) + (ulong)c;
}
private ulong djb2(ulong hash, ushort c)
{
hash = ((hash << 5) + hash) + (ulong)((byte)c);
return ((hash << 5) + hash) + (ulong)(c >> 8);
}
public byte[] ExtraParamsToBytes()
{
// m_log.DebugFormat("[EXTRAPARAMS]: Called ExtraParamsToBytes()");

63
OpenSim/Region/Physics/Meshing/Meshmerizer.cs
View File

@ -193,67 +193,6 @@ namespace OpenSim.Region.Physics.Meshing
m_log.Error("****** PrimMesh Parameters ******\n" + primMesh.ParamsToDisplayString());
}
private ulong GetMeshKey(PrimitiveBaseShape pbs, Vector3 size, float lod)
{
ulong hash = 5381;
hash = djb2(hash, pbs.PathCurve);
hash = djb2(hash, (byte)((byte)pbs.HollowShape | (byte)pbs.ProfileShape));
hash = djb2(hash, pbs.PathBegin);
hash = djb2(hash, pbs.PathEnd);
hash = djb2(hash, pbs.PathScaleX);
hash = djb2(hash, pbs.PathScaleY);
hash = djb2(hash, pbs.PathShearX);
hash = djb2(hash, pbs.PathShearY);
hash = djb2(hash, (byte)pbs.PathTwist);
hash = djb2(hash, (byte)pbs.PathTwistBegin);
hash = djb2(hash, (byte)pbs.PathRadiusOffset);
hash = djb2(hash, (byte)pbs.PathTaperX);
hash = djb2(hash, (byte)pbs.PathTaperY);
hash = djb2(hash, pbs.PathRevolutions);
hash = djb2(hash, (byte)pbs.PathSkew);
hash = djb2(hash, pbs.ProfileBegin);
hash = djb2(hash, pbs.ProfileEnd);
hash = djb2(hash, pbs.ProfileHollow);
// TODO: Separate scale out from the primitive shape data (after
// scaling is supported at the physics engine level)
byte[] scaleBytes = size.GetBytes();
for (int i = 0; i < scaleBytes.Length; i++)
hash = djb2(hash, scaleBytes[i]);
// Include LOD in hash, accounting for endianness
byte[] lodBytes = new byte[4];
Buffer.BlockCopy(BitConverter.GetBytes(lod), 0, lodBytes, 0, 4);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(lodBytes, 0, 4);
}
for (int i = 0; i < lodBytes.Length; i++)
hash = djb2(hash, lodBytes[i]);
// include sculpt UUID
if (pbs.SculptEntry)
{
scaleBytes = pbs.SculptTexture.GetBytes();
for (int i = 0; i < scaleBytes.Length; i++)
hash = djb2(hash, scaleBytes[i]);
}
return hash;
}
private ulong djb2(ulong hash, byte c)
{
return ((hash << 5) + hash) + (ulong)c;
}
private ulong djb2(ulong hash, ushort c)
{
hash = ((hash << 5) + hash) + (ulong)((byte)c);
return ((hash << 5) + hash) + (ulong)(c >> 8);
}
/// <summary>
/// Add a submesh to an existing list of coords and faces.
/// </summary>
@ -777,7 +716,7 @@ namespace OpenSim.Region.Physics.Meshing
// 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
key = GetMeshKey(primShape, size, lod);
key = primShape.GetMeshKey(size, lod);
if (m_uniqueMeshes.TryGetValue(key, out mesh))
return mesh;