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

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Signed-off-by: BlueWall <jamesh@bluewallgroup.com>
This commit is contained in:
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
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@@ -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()");