OpenSim
/
OpenSimMirror
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

refactor: move the code that generates physics meshs from prim mesh data into a separate method, in order to make the code more readable.

bulletsim
Justin Clark-Casey (justincc) 2011-07-30 02:08:32 +01:00
parent 7791c1fd1e
commit 122e01949d
1 changed files with 126 additions and 102 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

228
OpenSim/Region/Physics/Meshing/Meshmerizer.cs
View File

@ -301,6 +301,131 @@ namespace OpenSim.Region.Physics.Meshing
}
}
/// <summary>
/// Generate the co-ords and faces necessary to construct a mesh from the mesh data the accompanies a prim.
/// </summary>
/// <param name="primName"></param>
/// <param name="primShape"></param>
/// <param name="size"></param>
/// <param name="coords">Coords are added to this list by the method.</param>
/// <param name="faces">Faces are added to this list by the method.</param>
/// <returns>true if coords and faces were successfully generated, false if not</returns>
private bool GenerateCoordsAndFacesFromPrimMeshData(string primName, PrimitiveBaseShape primShape, Vector3 size, List<Coord> coords, List<Face> faces)
{
m_log.DebugFormat("[MESH]: experimental mesh proxy generation for {0}", primName);
OSD meshOsd = null;
if (primShape.SculptData.Length <= 0)
{
m_log.Error("[MESH]: asset data is zero length");
return false;
}
long start = 0;
using (MemoryStream data = new MemoryStream(primShape.SculptData))
{
try
{
OSD osd = OSDParser.DeserializeLLSDBinary(data);
if (osd is OSDMap)
meshOsd = (OSDMap)osd;
else
{
m_log.Warn("[Mesh}: unable to cast mesh asset to OSDMap");
return false;
}
}
catch (Exception e)
{
m_log.Error("[MESH]: Exception deserializing mesh asset header:" + e.ToString());
}
start = data.Position;
}
if (meshOsd is OSDMap)
{
OSDMap physicsParms = null;
OSDMap map = (OSDMap)meshOsd;
if (map.ContainsKey("physics_shape"))
physicsParms = (OSDMap)map["physics_shape"]; // old asset format
else if (map.ContainsKey("physics_mesh"))
physicsParms = (OSDMap)map["physics_mesh"]; // new asset format
if (physicsParms == null)
{
m_log.Warn("[MESH]: no recognized physics mesh found in mesh asset");
return false;
}
int physOffset = physicsParms["offset"].AsInteger() + (int)start;
int physSize = physicsParms["size"].AsInteger();
if (physOffset < 0 || physSize == 0)
return false; // no mesh data in asset
OSD decodedMeshOsd = new OSD();
byte[] meshBytes = new byte[physSize];
System.Buffer.BlockCopy(primShape.SculptData, physOffset, meshBytes, 0, physSize);
// byte[] decompressed = new byte[physSize * 5];
try
{
using (MemoryStream inMs = new MemoryStream(meshBytes))
{
using (MemoryStream outMs = new MemoryStream())
{
using (ZOutputStream zOut = new ZOutputStream(outMs))
{
byte[] readBuffer = new byte[2048];
int readLen = 0;
while ((readLen = inMs.Read(readBuffer, 0, readBuffer.Length)) > 0)
{
zOut.Write(readBuffer, 0, readLen);
}
zOut.Flush();
outMs.Seek(0, SeekOrigin.Begin);
byte[] decompressedBuf = outMs.GetBuffer();
decodedMeshOsd = OSDParser.DeserializeLLSDBinary(decompressedBuf);
}
}
}
}
catch (Exception e)
{
m_log.Error("[MESH]: exception decoding physical mesh: " + e.ToString());
return false;
}
OSDArray decodedMeshOsdArray = null;
// physics_shape is an array of OSDMaps, one for each submesh
if (decodedMeshOsd is OSDArray)
{
// Console.WriteLine("decodedMeshOsd for {0} - {1}", primName, Util.GetFormattedXml(decodedMeshOsd));
decodedMeshOsdArray = (OSDArray)decodedMeshOsd;
foreach (OSD subMeshOsd in decodedMeshOsdArray)
{
if (subMeshOsd is OSDMap)
AddSubMesh(subMeshOsd as OSDMap, size, coords, faces);
}
}
}
return true;
}
/// <summary>
/// Create a physics mesh from data that comes with the prim. The actual data used depends on the prim type.
/// </summary>
/// <param name="primName"></param>
/// <param name="primShape"></param>
/// <param name="size"></param>
/// <param name="lod"></param>
/// <returns></returns>
private Mesh CreateMeshFromPrimMesher(string primName, PrimitiveBaseShape primShape, Vector3 size, float lod)
{
// m_log.DebugFormat(
@ -323,108 +448,7 @@ namespace OpenSim.Region.Physics.Meshing
if (!useMeshiesPhysicsMesh)
return null;
m_log.DebugFormat("[MESH]: experimental mesh proxy generation for {0}", primName);
OSD meshOsd = null;
if (primShape.SculptData.Length <= 0)
{
m_log.Error("[MESH]: asset data is zero length");
return null;
}
long start = 0;
using (MemoryStream data = new MemoryStream(primShape.SculptData))
{
try
{
OSD osd = OSDParser.DeserializeLLSDBinary(data);
if (osd is OSDMap)
meshOsd = (OSDMap)osd;
else
{
m_log.Warn("[Mesh}: unable to cast mesh asset to OSDMap");
return null;
}
}
catch (Exception e)
{
m_log.Error("[MESH]: Exception deserializing mesh asset header:" + e.ToString());
}
start = data.Position;
}
if (meshOsd is OSDMap)
{
OSDMap physicsParms = null;
OSDMap map = (OSDMap)meshOsd;
if (map.ContainsKey("physics_shape"))
physicsParms = (OSDMap)map["physics_shape"]; // old asset format
else if (map.ContainsKey("physics_mesh"))
physicsParms = (OSDMap)map["physics_mesh"]; // new asset format
if (physicsParms == null)
{
m_log.Warn("[MESH]: no recognized physics mesh found in mesh asset");
return null;
}
int physOffset = physicsParms["offset"].AsInteger() + (int)start;
int physSize = physicsParms["size"].AsInteger();
if (physOffset < 0 || physSize == 0)
return null; // no mesh data in asset
OSD decodedMeshOsd = new OSD();
byte[] meshBytes = new byte[physSize];
System.Buffer.BlockCopy(primShape.SculptData, physOffset, meshBytes, 0, physSize);
// byte[] decompressed = new byte[physSize * 5];
try
{
using (MemoryStream inMs = new MemoryStream(meshBytes))
{
using (MemoryStream outMs = new MemoryStream())
{
using (ZOutputStream zOut = new ZOutputStream(outMs))
{
byte[] readBuffer = new byte[2048];
int readLen = 0;
while ((readLen = inMs.Read(readBuffer, 0, readBuffer.Length)) > 0)
{
zOut.Write(readBuffer, 0, readLen);
}
zOut.Flush();
outMs.Seek(0, SeekOrigin.Begin);
byte[] decompressedBuf = outMs.GetBuffer();
decodedMeshOsd = OSDParser.DeserializeLLSDBinary(decompressedBuf);
}
}
}
}
catch (Exception e)
{
m_log.Error("[MESH]: exception decoding physical mesh: " + e.ToString());
return null;
}
OSDArray decodedMeshOsdArray = null;
// physics_shape is an array of OSDMaps, one for each submesh
if (decodedMeshOsd is OSDArray)
{
// Console.WriteLine("decodedMeshOsd for {0} - {1}", primName, Util.GetFormattedXml(decodedMeshOsd));
decodedMeshOsdArray = (OSDArray)decodedMeshOsd;
foreach (OSD subMeshOsd in decodedMeshOsdArray)
{
if (subMeshOsd is OSDMap)
AddSubMesh(subMeshOsd as OSDMap, size, coords, faces);
}
}
}
GeneratePointsAndFacesFromPrimMeshData(primName, primShape, size, coords, faces);
}
else
{