// I had a lot of trouble with problems with equality and GetHashCode of OMVR.Vertex
// so this implementation creates a proper hash for a Vertex so it can be used
// in a dictionary.
public static BHash VertexBHash(OMVR.Vertex vert)
{
BHasher hasher = new BHasherMdjb2();
MeshInfo.VertexBHash(vert, hasher);
return(hasher.Finish());
}
public MeshInfo GetMeshInfo(BHash hash, MeshInfoBuilder builder)
{
MeshInfo meshInfo = null;
lock (Meshes) {
if (!Meshes.TryGetValue(hash, out meshInfo))
{
if (builder != null)
{
meshInfo = builder();
Meshes.Add(hash, meshInfo.handle, meshInfo);
// Assert the hash we're indexing it under is the one in meshInfo
if (!hash.Equals(meshInfo.GetBHash()))
{
ConvOAR.Globals.log.ErrorFormat(
"AssetFetcher.GetMeshInfo: adding mesh with different hash!");
ConvOAR.Globals.log.ErrorFormat(
"AssetFetcher.GetMeshInfo: meshInfo.handle={0}, passed hash={1}, meshInfo.hash={2}",
meshInfo.handle, hash.ToString(), meshInfo.GetBHash().ToString());
}
}
else
{
meshInfo = null;
}
}
}
return(meshInfo);
}
public BHash GetBHash(bool force)
{
if (force)
{
_hash = null;
}
if (_hash == null)
{
BHasher hasher = new BHasherMdjb2();
vertexs.ForEach(vert => {
MeshInfo.VertexBHash(vert, hasher);
});
indices.ForEach(ind => {
hasher.Add(ind);
});
hasher.Add(faceCenter.X);
hasher.Add(faceCenter.Y);
hasher.Add(faceCenter.Z);
hasher.Add(scale.X);
hasher.Add(scale.Y);
hasher.Add(scale.Z);
_hash = hasher.Finish();
}
return(_hash);
}
public static void OnAllVertex(MeshInfo mi, OperateOnVertex vertOp)
{
for (int jj = 0; jj < mi.vertexs.Count; jj++)
{
OMVR.Vertex aVert = mi.vertexs[jj];
vertOp(ref aVert);
mi.vertexs[jj] = aVert;
}
}
// Given a list of meshes, combine them into one mesh and return a containing BInstance.
private BInstance CreateOneInstanceFromMeshes(BHash materialHash, List <InvertedMesh> meshes)
{
// Pick one of the meshes to be the 'root' mesh.
// Someday may need to find the most center mesh to work from.
InvertedMesh rootIMesh = meshes.First();
// The new instance will be at the location of the root mesh with no rotation
BInstance inst = new BInstance();
inst.Position = rootIMesh.containingInstance.Position;
inst.Rotation = OMV.Quaternion.Identity;
inst.coordAxis = rootIMesh.containingInstance.coordAxis;
try {
// The mesh we're going to build
MeshInfo meshInfo = new MeshInfo();
foreach (InvertedMesh imesh in meshes)
{
int indicesBase = meshInfo.vertexs.Count;
// Go through the mesh, map all vertices to global coordinates then convert relative to root
meshInfo.vertexs.AddRange(imesh.renderableMesh.mesh.vertexs.Select(vert => {
OMVR.Vertex newVert = new OMVR.Vertex();
OMV.Vector3 worldPos = vert.Position;
worldPos = worldPos * imesh.containingDisplayable.offsetRotation
+ imesh.containingDisplayable.offsetPosition;
worldPos = worldPos * imesh.containingInstance.Rotation
+ imesh.containingInstance.Position;
// Make new vert relative to the BInstance it's being added to
newVert.Position = worldPos - inst.Position;
newVert.Normal = vert.Normal
* imesh.containingDisplayable.offsetRotation
* imesh.containingInstance.Rotation;
newVert.TexCoord = vert.TexCoord;
return(newVert);
}));
meshInfo.indices.AddRange(imesh.renderableMesh.mesh.indices.Select(ind => ind + indicesBase));
}
RenderableMesh newMesh = new RenderableMesh();
newMesh.num = 0;
newMesh.material = rootIMesh.renderableMesh.material; // The material we share
newMesh.mesh = meshInfo;
RenderableMeshGroup meshGroup = new RenderableMeshGroup();
meshGroup.meshes.Add(newMesh);
Displayable displayable = new Displayable(meshGroup);
displayable.name = "combinedMaterialMeshes-" + materialHash.ToString();
inst.Representation = displayable;
}
catch (Exception e) {
ConvOAR.Globals.log.ErrorFormat("{0} CreateInstanceFromSharedMaterialMeshes: exception: {1}", _logHeader, e);
}
return(inst);
}
// Add the passed MeshInfo the to list if it is not already in the list
public void AddUniqueMeshInfo(MeshInfo meshInfo)
{
lock (Meshes) {
MeshInfo existingMeshInfo = null;
if (!Meshes.TryGetValue(meshInfo.GetBHash(), out existingMeshInfo))
{
// If not already in the list, add this MeshInfo
Meshes.Add(meshInfo.GetBHash(), meshInfo.handle, meshInfo);
}
}
}
// Create a new MeshInfo with a copy of what is in another MeshInfo.
// Note that we need to do a deep'ish copy since the values of the
// vertices may be modified in the copy.
// OMVR.Vertex and OMV.Vextor3 are structs so they are copied.
public MeshInfo(MeshInfo other)
{
handle = new EntityHandleUUID();
vertexs = other.vertexs.ConvertAll(v => {
OMVR.Vertex newV = new OMVR.Vertex();
newV.Position = v.Position;
newV.Normal = v.Normal;
newV.TexCoord = v.TexCoord;
return(newV);
});
// vertexs = new List<OMVR.Vertex>(other.vertexs);
indices = new List <int>(other.indices);
scale = new OMV.Vector3(other.scale);
faceCenter = new OMV.Vector3(other.faceCenter);
}
// Walk through all the vertices and scale the included meshes
// Returns 'true' of the mesh was changed.
public static bool ScaleMeshes(MeshInfo meshInfo, OMV.Vector3 scale)
{
bool ret = false;
if (scale.X != 1.0 || scale.Y != 1.0 || scale.Z != 1.0)
{
ret = true;
for (int ii = 0; ii < meshInfo.vertexs.Count; ii++)
{
OMVR.Vertex aVert = meshInfo.vertexs[ii];
aVert.Position *= scale;
meshInfo.vertexs[ii] = aVert;
}
}
return(ret);
}
private RenderableMesh ConvertFaceToRenderableMesh(OMVR.Face face, IAssetFetcher assetFetcher,
OMV.Primitive.TextureEntryFace defaultTexture, OMV.Vector3 primScale)
{
RenderableMesh rmesh = new RenderableMesh();
rmesh.num = face.ID;
// Copy one face's mesh imformation from the FacetedMesh into a MeshInfo
MeshInfo meshInfo = new MeshInfo {
vertexs = new List <OMVR.Vertex>(face.Vertices),
indices = face.Indices.ConvertAll(ii => (int)ii),
faceCenter = face.Center,
scale = primScale
};
BConverterOS.LogBProgress("{0} ConvertFaceToRenderableMesh: faceId={1}, numVert={2}, numInd={3}",
_logHeader, face.ID, meshInfo.vertexs.Count, meshInfo.indices.Count);
if (!ConvOAR.Globals.parms.P <bool>("DisplayTimeScaling"))
{
if (ScaleMeshes(meshInfo, primScale))
{
BConverterOS.LogBProgress("{0} ConvertFaceToRenderableMesh: scaled mesh to {1}",
_logHeader, primScale);
}
meshInfo.scale = OMV.Vector3.One;
}
// Find or create the MaterialInfo for this face.
MaterialInfo matInfo = new MaterialInfo(face, defaultTexture);
if (matInfo.textureID != null &&
matInfo.textureID != OMV.UUID.Zero &&
matInfo.textureID != OMV.Primitive.TextureEntry.WHITE_TEXTURE)
{
// Textures/images use the UUID from OpenSim and the hash is just the hash of the UUID
EntityHandleUUID textureHandle = new EntityHandleUUID((OMV.UUID)matInfo.textureID);
BHash textureHash = new BHashULong(textureHandle.GetUUID().GetHashCode());
ImageInfo lookupImageInfo = assetFetcher.GetImageInfo(textureHash, () => {
// The image is not in the cache yet so create an ImageInfo entry for it
// Note that image gets the same UUID as the OpenSim texture
ImageInfo imageInfo = new ImageInfo(textureHandle);
assetFetcher.FetchTextureAsImage(textureHandle)
.Then(img => {
imageInfo.SetImage(img);
})
.Catch(e => {
// Failure getting the image
ConvOAR.Globals.log.ErrorFormat("{0} Failure fetching texture. id={1}. {2}",
_logHeader, matInfo.textureID, e);
// Create a simple, single color image to fill in for the missing image
var fillInImage = new Bitmap(32, 32, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Color theColor = Color.FromArgb(128, 202, 213, 170); // 0x80CAB5AA
for (int xx = 0; xx < 32; xx++)
{
for (int yy = 0; yy < 32; yy++)
{
fillInImage.SetPixel(xx, yy, theColor);
}
}
imageInfo.SetImage(fillInImage);
});
imageInfo.imageIdentifier = (OMV.UUID)matInfo.textureID;
BConverterOS.LogBProgress("{0} ConvertFaceToRenderableMesh: create ImageInfo. hash={1}, id={2}",
_logHeader, textureHash, imageInfo.handle);
return(imageInfo);
});
matInfo.image = lookupImageInfo;
// Update the UV information for the texture mapping
BConverterOS.LogBProgress("{0} ConvertFaceToRenderableMesh: Converting tex coords using {1} texture",
_logHeader, face.TextureFace == null ? "default" : "face");
_mesher.TransformTexCoords(meshInfo.vertexs, meshInfo.faceCenter,
face.TextureFace == null ? defaultTexture : face.TextureFace, primScale);
}
// See that the material is in the cache
MaterialInfo lookupMatInfo = assetFetcher.GetMaterialInfo(matInfo.GetBHash(), () => { return(matInfo); });
rmesh.material = lookupMatInfo;
// See that the mesh is in the cache
MeshInfo lookupMeshInfo = assetFetcher.GetMeshInfo(meshInfo.GetBHash(true), () => { return(meshInfo); });
rmesh.mesh = lookupMeshInfo;
if (lookupMeshInfo.indices.Count == 0) // DEBUG DEBUG
{
ConvOAR.Globals.log.ErrorFormat("{0} indices count of zero. rmesh={1}", _logHeader, rmesh.ToString());
} // DEBUG DEBUG
BConverterOS.LogBProgress("{0} ConvertFaceToRenderableMesh: rmesh.mesh={1}, rmesh.material={2}",
_logHeader, rmesh.mesh, rmesh.material);
return(rmesh);
}