// Create a region hash made of the hashes of all the SOGs in the region
public static BHash CreateRegionHash(Scene pScene)
{
BHasher regionHasher = new BHasherSHA256();
regionHasher.Add(pScene.RegionInfo.RegionID.GetBytes(), 0, 16);
foreach (SceneObjectGroup sog in pScene.GetSceneObjectGroups().OrderBy(x => x.UUID))
{
regionHasher.Add(LodenRegion.CreateSOGHash(sog));
}
return(regionHasher.Finish());
}
// Create a uniquifying hash for this SOG instance.
// The hash includes the UUID, a hash of the prim paramters, and the position in the scene.
public static BHash CreateSOGHash(SceneObjectGroup pSog)
{
BHasher sogHasher = new BHasherSHA256();
sogHasher.Add(pSog.UUID.GetBytes(), 0, 16);
foreach (SceneObjectPart sop in pSog.Parts.OrderBy(x => x.UUID))
{
sogHasher.Add(sop.UUID.GetBytes(), 0, 16);
sogHasher.Add(sop.Shape.GetMeshKey(sop.Scale, (float)OMVR.DetailLevel.Highest));
LodenRegion.AddPositionToHash(sogHasher, sop.AbsolutePosition, sop.RotationOffset);
}
;
return(sogHasher.Finish());
}
public string BHasherSHA256Test(string toHash)
{
BHasher hasher = new BHasherSHA256();
byte[] byt = Encoding.ASCII.GetBytes(toHash);
hasher.Add(byt, 0, byt.Length);
BHash hash = hasher.Finish();
System.Console.WriteLine("BHasherSHA256 hash output = " + hash.ToString());
return(hash.ToString());
}