add prototype code to decode convex hulls from mesh assets. Please do not use yet; the interface will be defined in a later commit.
dahlia
parent
ec818a506b
commit
fa8f5bafb2
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@ -79,6 +79,8 @@ namespace OpenSim.Region.Physics.Meshing
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private float minSizeForComplexMesh = 0.2f; // prims with all dimensions smaller than this will have a bounding box mesh
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private List<List<Vector3>> mConvexHulls = null;
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private Dictionary<ulong, Mesh> m_uniqueMeshes = new Dictionary<ulong, Mesh>();
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public Meshmerizer(IConfigSource config)
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@ -363,6 +365,57 @@ namespace OpenSim.Region.Physics.Meshing
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else if (map.ContainsKey("high_lod"))
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physicsParms = (OSDMap)map["high_lod"]; // if all else fails, use highest LOD display mesh and hope it works :)
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if (map.ContainsKey("physics_convex"))
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{ // pull this out also in case physics engine can use it
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try
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{
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OSDMap convexBlock = (OSDMap)map["physics_convex"];
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if (convexBlock.ContainsKey("HullList"))
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{
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byte[] hullList = convexBlock["HullList"].AsBinary();
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Vector3 min = new Vector3(-0.5f, -0.5f, -0.5f);
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if (convexBlock.ContainsKey("Min")) min = convexBlock["Min"].AsVector3();
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Vector3 max = new Vector3(0.5f, 0.5f, 0.5f);
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if (convexBlock.ContainsKey("Max")) max = convexBlock["Max"].AsVector3();
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// decompress and decode hull points
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byte[] posBytes = DecompressOsd(convexBlock["Positions"].AsBinary()).AsBinary();
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List<List<Vector3>> hulls = new List<List<Vector3>>();
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int posNdx = 0;
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foreach (byte cnt in hullList)
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{
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int count = cnt == 0 ? 256 : cnt;
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List<Vector3> hull = new List<Vector3>();
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for (int i = 0; i < cnt; i++)
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{
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ushort uX = Utils.BytesToUInt16(posBytes, posNdx); posNdx += 2;
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ushort uY = Utils.BytesToUInt16(posBytes, posNdx); posNdx += 2;
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ushort uZ = Utils.BytesToUInt16(posBytes, posNdx); posNdx += 2;
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Vector3 pos = new Vector3(
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Utils.UInt16ToFloat(uX, min.X, max.X) * size.X,
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Utils.UInt16ToFloat(uY, min.Y, max.Y) * size.Y,
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Utils.UInt16ToFloat(uZ, min.Z, max.Z) * size.Z
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);
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hull.Add(pos);
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}
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hulls.Add(hull);
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}
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mConvexHulls = hulls;
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}
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}
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catch (Exception e)
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{
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m_log.WarnFormat("[MESH]: exception decoding convex block: {0}", e.Message);
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}
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}
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if (physicsParms == null)
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{
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m_log.WarnFormat("[MESH]: No recognized physics mesh found in mesh asset for {0}", primName);
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@ -381,27 +434,7 @@ namespace OpenSim.Region.Physics.Meshing
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// byte[] decompressed = new byte[physSize * 5];
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try
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{
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using (MemoryStream inMs = new MemoryStream(meshBytes))
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{
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using (MemoryStream outMs = new MemoryStream())
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{
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using (ZOutputStream zOut = new ZOutputStream(outMs))
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{
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byte[] readBuffer = new byte[2048];
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int readLen = 0;
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while ((readLen = inMs.Read(readBuffer, 0, readBuffer.Length)) > 0)
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{
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zOut.Write(readBuffer, 0, readLen);
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}
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zOut.Flush();
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outMs.Seek(0, SeekOrigin.Begin);
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byte[] decompressedBuf = outMs.GetBuffer();
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decodedMeshOsd = OSDParser.DeserializeLLSDBinary(decompressedBuf);
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}
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}
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}
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decodedMeshOsd = DecompressOsd(meshBytes);
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}
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catch (Exception e)
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{
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@ -428,6 +461,41 @@ namespace OpenSim.Region.Physics.Meshing
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return true;
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}
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/// <summary>
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/// decompresses a gzipped OSD object
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/// </summary>
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/// <param name="decodedOsd"></param> the OSD object
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/// <param name="meshBytes"></param>
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/// <returns></returns>
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private static OSD DecompressOsd(byte[] meshBytes)
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{
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OSD decodedOsd = null;
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using (MemoryStream inMs = new MemoryStream(meshBytes))
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{
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using (MemoryStream outMs = new MemoryStream())
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{
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using (ZOutputStream zOut = new ZOutputStream(outMs))
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{
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byte[] readBuffer = new byte[2048];
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int readLen = 0;
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while ((readLen = inMs.Read(readBuffer, 0, readBuffer.Length)) > 0)
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{
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zOut.Write(readBuffer, 0, readLen);
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}
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zOut.Flush();
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outMs.Seek(0, SeekOrigin.Begin);
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byte[] decompressedBuf = outMs.GetBuffer();
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decodedOsd = OSDParser.DeserializeLLSDBinary(decompressedBuf);
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}
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}
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}
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return decodedOsd;
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}
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/// <summary>
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/// Generate the co-ords and faces necessary to construct a mesh from the sculpt data the accompanies a prim.
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/// </summary>
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@ -704,6 +772,27 @@ namespace OpenSim.Region.Physics.Meshing
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return true;
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}
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/// <summary>
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/// temporary prototype code - please do not use until the interface has been finalized!
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/// </summary>
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/// <param name="size">value to scale the hull points by</param>
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/// <returns>a list of hulls if they exist and have been successfully decoded, otherwise null</returns>
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public List<List<Vector3>> GetConvexHulls(Vector3 size)
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{
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if (mConvexHulls == null)
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return null;
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List<List<Vector3>> hulls = new List<List<Vector3>>();
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foreach (var hull in mConvexHulls)
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{
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List<Vector3> verts = new List<Vector3>();
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foreach (var vert in hull)
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verts.Add(vert * size);
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}
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return hulls;
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}
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public IMesh CreateMesh(String primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
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{
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return CreateMesh(primName, primShape, size, lod, false, true);
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