From 7fa3335fd53f863b20190025c3cfc8e8e36f96ed Mon Sep 17 00:00:00 2001
From: dahlia
Date: Mon, 18 Oct 2010 04:17:36 -0700
Subject: initial support for meshies physics. Must set ini option
UseMeshiesPhysicsMesh = true to enable. See file OpenSimDefaults.ini for
example.
---
OpenSim/Region/Physics/Meshing/Meshmerizer.cs | 137 ++++++++++++++++++--------
bin/OpenSimDefaults.ini | 6 ++
bin/zlib.net.dll | Bin 0 -> 65536 bytes
prebuild.xml | 2 +-
4 files changed, 101 insertions(+), 44 deletions(-)
create mode 100644 bin/zlib.net.dll
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
index 3e3a0f0..89ee5af 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
@@ -40,6 +40,7 @@ using log4net;
using Nini.Config;
using System.Reflection;
using System.IO;
+using ComponentAce.Compression.Libs.zlib;
namespace OpenSim.Region.Physics.Meshing
{
@@ -74,6 +75,7 @@ namespace OpenSim.Region.Physics.Meshing
private bool cacheSculptMaps = true;
private string decodedSculptMapPath = null;
+ private bool useMeshiesPhysicsMesh = false;
private float minSizeForComplexMesh = 0.2f; // prims with all dimensions smaller than this will have a bounding box mesh
@@ -85,6 +87,7 @@ namespace OpenSim.Region.Physics.Meshing
decodedSculptMapPath = start_config.GetString("DecodedSculptMapPath","j2kDecodeCache");
cacheSculptMaps = start_config.GetBoolean("CacheSculptMaps", cacheSculptMaps);
+ useMeshiesPhysicsMesh = start_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
try
{
@@ -268,73 +271,121 @@ namespace OpenSim.Region.Physics.Meshing
{
if (((OpenMetaverse.SculptType)primShape.SculptType) == SculptType.Mesh)
{
- // add code for mesh physics proxy generation here
- m_log.Debug("[MESH]: mesh proxy generation not implemented yet ");
-
- OSD meshOsd;
+ if (!useMeshiesPhysicsMesh)
+ return null;
- if (primShape.SculptData.Length > 0)
- {
-
-
- m_log.Debug("[MESH]: asset data length: " + primShape.SculptData.Length.ToString());
- byte[] header = Util.StringToBytes256("");
+ m_log.Debug("[MESH]: experimental mesh proxy generation");
- ////dump to debugging file
- //string filename = System.IO.Path.Combine(decodedSculptMapPath, "mesh_" + primShape.SculptTexture.ToString());
- //BinaryWriter writer = new BinaryWriter(File.Open(filename, FileMode.Create));
- //writer.Write(primShape.SculptData);
- //writer.Close();
+ OSD meshOsd;
- }
- else
+ if (primShape.SculptData.Length <= 0)
{
m_log.Error("[MESH]: asset data is zero length");
return null;
}
- try
- {
- meshOsd = OSDParser.DeserializeLLSDBinary(primShape.SculptData, true);
- }
- catch (Exception e)
+ long start = 0;
+ using (MemoryStream data = new MemoryStream(primShape.SculptData))
{
- m_log.Error("[MESH]: exception decoding mesh asset: " + e.ToString());
- return null;
+ meshOsd = (OSDMap)OSDParser.DeserializeLLSDBinary(data, true);
+ start = data.Position;
}
if (meshOsd is OSDMap)
{
OSDMap map = (OSDMap)meshOsd;
- //foreach (string name in map.Keys)
- // m_log.Debug("[MESH]: key:" + name + " value:" + map[name].AsString());
OSDMap physicsParms = (OSDMap)map["physics_shape"];
- int physOffset = physicsParms["offset"].AsInteger();
+ int physOffset = physicsParms["offset"].AsInteger() + (int)start;
int physSize = physicsParms["size"].AsInteger();
if (physOffset < 0 || physSize == 0)
return null; // no mesh data in asset
- m_log.Debug("[MESH]: physOffset:" + physOffset.ToString() + " physSize:" + physSize.ToString());
- //MemoryStream ms = new MemoryStream(primShape.SculptData, physOffset, physSize);
- //GZipStream gzStream = new GZipStream(ms, CompressionMode.Decompress);
-
- //int maxSize = physSize * 5; // arbitrary guess
- //byte[] readBuffer = new byte[maxSize];
-
- //int bytesRead = gzStream.Read(readBuffer, 0, maxSize);
-
- //OSD physMeshOsd = OSDParser.DeserializeLLSDBinary(readBuffer);
-
-
+ 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
+ {
+ {
+ string filename = System.IO.Path.Combine(decodedSculptMapPath, "meshInput_" + primShape.SculptTexture.ToString());
+ using (FileStream fs = new FileStream(filename, FileMode.Create))
+ {
+ fs.Write(meshBytes, 0, meshBytes.Length);
+ }
+ }
+ 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, true);
+ }
+ }
+ }
+ }
+ 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)
+ {
+ decodedMeshOsdArray = (OSDArray)decodedMeshOsd;
+ foreach (OSD subMeshOsd in decodedMeshOsdArray)
+ {
+ if (subMeshOsd is OSDMap)
+ {
+ OSDMap subMeshMap = (OSDMap)subMeshOsd;
+
+ OpenMetaverse.Vector3 posMax = ((OSDMap)subMeshMap["PositionDomain"])["Max"].AsVector3();
+ OpenMetaverse.Vector3 posMin = ((OSDMap)subMeshMap["PositionDomain"])["Min"].AsVector3();
+
+ byte[] posBytes = subMeshMap["Position"].AsBinary();
+ for (int i = 0; i < posBytes.Length; i += 6)
+ {
+ ushort uX = Utils.BytesToUInt16(posBytes, i);
+ ushort uY = Utils.BytesToUInt16(posBytes, i + 2);
+ ushort uZ = Utils.BytesToUInt16(posBytes, i + 4);
+
+ Coord c = new Coord(
+ Utils.UInt16ToFloat(uX, posMin.X, posMax.X) * size.X,
+ Utils.UInt16ToFloat(uY, posMin.Y, posMax.Y) * size.Y,
+ Utils.UInt16ToFloat(uZ, posMin.Z, posMax.Z) * size.Z);
+
+ coords.Add(c);
+ }
+
+ byte[] triangleBytes = subMeshMap["TriangleList"].AsBinary();
+ for (int i = 0; i < triangleBytes.Length; i += 6)
+ {
+ ushort v1 = Utils.BytesToUInt16(triangleBytes, i);
+ ushort v2 = Utils.BytesToUInt16(triangleBytes, i + 2);
+ ushort v3 = Utils.BytesToUInt16(triangleBytes, i + 4);
+ Face f = new Face(v1, v2, v3);
+ faces.Add(f);
+ }
+ }
+ }
+ }
}
-
- //just bail out for now until mesh code is finished
- return null;
-
}
else
{
diff --git a/bin/OpenSimDefaults.ini b/bin/OpenSimDefaults.ini
index 05358c4..82267ed 100644
--- a/bin/OpenSimDefaults.ini
+++ b/bin/OpenSimDefaults.ini
@@ -147,6 +147,12 @@
; to false if you have compatibility problems.
;CacheSculptMaps = true
+ ; if you use Meshmerizer and want collisions for meshies, setting this to true
+ ; will cause OpenSim to attempt to decode meshies assets, extract the physics
+ ; mesh, and use it for collisions. This is currently experimental code and enabling
+ ; it may cause unexpected physics problems.
+ ;UseMeshiesPhysicsMesh = false
+
; Choose one of the physics engines below
; OpenDynamicsEngine is by some distance the most developed physics engine
; basicphysics effectively does not model physics at all, making all objects phantom
diff --git a/bin/zlib.net.dll b/bin/zlib.net.dll
new file mode 100644
index 0000000..9d15654
Binary files /dev/null and b/bin/zlib.net.dll differ
diff --git a/prebuild.xml b/prebuild.xml
index cc0424a..b28d226 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -587,7 +587,6 @@
../../../../bin/
-
@@ -597,6 +596,7 @@
+
--
cgit v1.1