private void DeoptimizeTransformHierarchy()
{
if (avatar == null)
{
throw new Exception("Transform hierarchy has been optimized, but can't find Avatar to deoptimize.");
}
// 1. Figure out the skeletonPaths from the unstripped avatar
var skeletonPaths = new List <string>();
foreach (var id in avatar.m_Avatar.m_AvatarSkeleton.m_ID)
{
var path = avatar.FindBonePath(id);
skeletonPaths.Add(path);
}
// 2. Restore the original transform hierarchy
// Prerequisite: skeletonPaths follow pre-order traversal
var rootFrame = FrameList[0];
rootFrame.ClearChild();
for (var i = 1; i < skeletonPaths.Count; i++) // start from 1, skip the root transform because it will always be there.
{
var path = skeletonPaths[i];
var strs = path.Split('/');
string transformName;
ImportedFrame parentFrame;
if (strs.Length == 1)
{
transformName = path;
parentFrame = rootFrame;
}
else
{
transformName = strs.Last();
var parentFrameName = strs[strs.Length - 2];
parentFrame = ImportedHelpers.FindChild(parentFrameName, rootFrame);
}
var skeletonPose = avatar.m_Avatar.m_DefaultPose;
var xform = skeletonPose.m_X[i];
if (!(xform.t is Vector3 t))
{
var v4 = (Vector4)xform.t;
t = (Vector3)v4;
}
if (!(xform.s is Vector3 s))
{
var v4 = (Vector4)xform.s;
s = (Vector3)v4;
}
var frame = ConvertFrame(t, xform.q, s, transformName);
parentFrame.AddChild(frame);
}
}
private string GetMeshPath(Transform meshTransform)
{
meshTransform.m_GameObject.TryGetGameObject(out var m_GameObject);
var curFrame = ImportedHelpers.FindChild(m_GameObject.m_Name, FrameList[0]) ?? ImportedHelpers.FindFrame(m_GameObject.m_Name, FrameList[0]);
var path = curFrame.Name;
while (curFrame.Parent != null)
{
curFrame = curFrame.Parent;
path = curFrame.Name + "/" + path;
}
return path;
}
private void ConvertMeshRenderer(Renderer meshR)
{
var mesh = GetMesh(meshR);
if (mesh == null)
return;
var iMesh = new ImportedMesh();
meshR.m_GameObject.TryGetGameObject(out var m_GameObject2);
m_GameObject2.m_Transform.TryGetTransform(out var meshTransform);
iMesh.Name = GetMeshPath(meshTransform);
iMesh.SubmeshList = new List<ImportedSubmesh>();
var subHashSet = new HashSet<int>();
var combine = false;
int firstSubMesh = 0;
if (meshR.m_StaticBatchInfo?.subMeshCount > 0)
{
firstSubMesh = meshR.m_StaticBatchInfo.firstSubMesh;
var finalSubMesh = meshR.m_StaticBatchInfo.firstSubMesh + meshR.m_StaticBatchInfo.subMeshCount;
for (int i = meshR.m_StaticBatchInfo.firstSubMesh; i < finalSubMesh; i++)
{
subHashSet.Add(i);
}
combine = true;
}
else if (meshR.m_SubsetIndices?.Length > 0)
{
firstSubMesh = (int)meshR.m_SubsetIndices.Min(x => x);
foreach (var index in meshR.m_SubsetIndices)
{
subHashSet.Add((int)index);
}
combine = true;
}
int firstFace = 0;
for (int i = 0; i < mesh.m_SubMeshes.Count; i++)
{
int numFaces = (int)mesh.m_SubMeshes[i].indexCount / 3;
if (subHashSet.Count > 0 && !subHashSet.Contains(i))
{
firstFace += numFaces;
continue;
}
var submesh = mesh.m_SubMeshes[i];
var iSubmesh = new ImportedSubmesh();
Material mat = null;
if (i - firstSubMesh < meshR.m_Materials.Length)
{
if (meshR.m_Materials[i - firstSubMesh].TryGetPD(out var MaterialPD))
{
mat = new Material(MaterialPD);
}
}
ImportedMaterial iMat = ConvertMaterial(mat);
iSubmesh.Material = iMat.Name;
iSubmesh.VertexList = new List<ImportedVertex>((int)submesh.vertexCount);
var vertexColours = mesh.m_Colors != null && (mesh.m_Colors.Length == mesh.m_VertexCount * 3 || mesh.m_Colors.Length == mesh.m_VertexCount * 4);
for (var j = mesh.m_SubMeshes[i].firstVertex; j < mesh.m_SubMeshes[i].firstVertex + mesh.m_SubMeshes[i].vertexCount; j++)
{
var iVertex = vertexColours ? new ImportedVertexWithColour() : new ImportedVertex();
//Vertices
int c = 3;
if (mesh.m_Vertices.Length == mesh.m_VertexCount * 4)
{
c = 4;
}
iVertex.Position = new Vector3(-mesh.m_Vertices[j * c], mesh.m_Vertices[j * c + 1], mesh.m_Vertices[j * c + 2]);
//Normals
if (mesh.m_Normals?.Length > 0)
{
if (mesh.m_Normals.Length == mesh.m_VertexCount * 3)
{
c = 3;
}
else if (mesh.m_Normals.Length == mesh.m_VertexCount * 4)
{
c = 4;
}
iVertex.Normal = new Vector3(-mesh.m_Normals[j * c], mesh.m_Normals[j * c + 1], mesh.m_Normals[j * c + 2]);
}
//Colors
if (vertexColours)
{
if (mesh.m_Colors.Length == mesh.m_VertexCount * 3)
{
((ImportedVertexWithColour)iVertex).Colour = new Color4(mesh.m_Colors[j * 3], mesh.m_Colors[j * 3 + 1], mesh.m_Colors[j * 3 + 2], 1.0f);
}
else
{
((ImportedVertexWithColour)iVertex).Colour = new Color4(mesh.m_Colors[j * 4], mesh.m_Colors[j * 4 + 1], mesh.m_Colors[j * 4 + 2], mesh.m_Colors[j * 4 + 3]);
}
}
//UV
if (mesh.m_UV1 != null && mesh.m_UV1.Length == mesh.m_VertexCount * 2)
{
iVertex.UV = new[] { mesh.m_UV1[j * 2], -mesh.m_UV1[j * 2 + 1] };
}
else if (mesh.m_UV2 != null && mesh.m_UV2.Length == mesh.m_VertexCount * 2)
{
iVertex.UV = new[] { mesh.m_UV2[j * 2], -mesh.m_UV2[j * 2 + 1] };
}
//Tangent
if (mesh.m_Tangents != null && mesh.m_Tangents.Length == mesh.m_VertexCount * 4)
{
iVertex.Tangent = new Vector4(-mesh.m_Tangents[j * 4], mesh.m_Tangents[j * 4 + 1], mesh.m_Tangents[j * 4 + 2], mesh.m_Tangents[j * 4 + 3]);
}
//BoneInfluence
if (mesh.m_Skin?.Length > 0)
{
var inf = mesh.m_Skin[j];
iVertex.BoneIndices = new byte[inf.Count];
iVertex.Weights = new float[inf.Count];
for (var k = 0; k < inf.Count; k++)
{
iVertex.BoneIndices[k] = (byte)inf[k].boneIndex;
iVertex.Weights[k] = inf[k].weight;
}
}
iSubmesh.VertexList.Add(iVertex);
}
//Face
iSubmesh.FaceList = new List<ImportedFace>(numFaces);
var end = firstFace + numFaces;
for (int f = firstFace; f < end; f++)
{
var face = new ImportedFace();
face.VertexIndices = new int[3];
face.VertexIndices[0] = (int)(mesh.m_Indices[f * 3 + 2] - submesh.firstVertex);
face.VertexIndices[1] = (int)(mesh.m_Indices[f * 3 + 1] - submesh.firstVertex);
face.VertexIndices[2] = (int)(mesh.m_Indices[f * 3] - submesh.firstVertex);
iSubmesh.FaceList.Add(face);
}
firstFace = end;
iMesh.SubmeshList.Add(iSubmesh);
}
//Bone
iMesh.BoneList = new List<ImportedBone>();
if (mesh.m_BindPose?.Length > 0 && mesh.m_BoneNameHashes?.Length > 0 && mesh.m_BindPose.Length == mesh.m_BoneNameHashes.Length)
{
for (int i = 0; i < mesh.m_BindPose.Length; i++)
{
var bone = new ImportedBone();
var boneHash = mesh.m_BoneNameHashes[i];
bone.Name = GetNameFromBonePathHashes(boneHash);
if (string.IsNullOrEmpty(bone.Name))
{
bone.Name = avatar?.FindBoneName(boneHash);
}
if (string.IsNullOrEmpty(bone.Name))
{
//throw new Exception("A Bone could neither be found by hash in Avatar nor by index in SkinnedMeshRenderer.");
continue;
}
var om = new float[4, 4];
var m = mesh.m_BindPose[i];
om[0, 0] = m[0, 0];
om[0, 1] = -m[1, 0];
om[0, 2] = -m[2, 0];
om[0, 3] = m[3, 0];
om[1, 0] = -m[0, 1];
om[1, 1] = m[1, 1];
om[1, 2] = m[2, 1];
om[1, 3] = m[3, 1];
om[2, 0] = -m[0, 2];
om[2, 1] = m[1, 2];
om[2, 2] = m[2, 2];
om[2, 3] = m[3, 2];
om[3, 0] = -m[0, 3];
om[3, 1] = m[1, 3];
om[3, 2] = m[2, 3];
om[3, 3] = m[3, 3];
bone.Matrix = om;
iMesh.BoneList.Add(bone);
}
}
if (meshR is SkinnedMeshRenderer sMesh)
{
//Bone for 4.3 down and other
if (iMesh.BoneList.Count == 0)
{
for (int i = 0; i < sMesh.m_Bones.Length; i++)
{
var bone = new ImportedBone();
if (sMesh.m_Bones[i].TryGetTransform(out var m_Transform))
{
if (m_Transform.m_GameObject.TryGetGameObject(out var m_GameObject))
{
bone.Name = m_GameObject.m_Name;
}
}
if (string.IsNullOrEmpty(bone.Name))
{
var boneHash = mesh.m_BoneNameHashes[i];
bone.Name = GetNameFromBonePathHashes(boneHash);
if (string.IsNullOrEmpty(bone.Name))
{
bone.Name = avatar?.FindBoneName(boneHash);
}
if (string.IsNullOrEmpty(bone.Name))
{
//throw new Exception("A Bone could neither be found by hash in Avatar nor by index in SkinnedMeshRenderer.");
continue;
}
}
var om = new float[4, 4];
var m = mesh.m_BindPose[i];
om[0, 0] = m[0, 0];
om[0, 1] = -m[1, 0];
om[0, 2] = -m[2, 0];
om[0, 3] = m[3, 0];
om[1, 0] = -m[0, 1];
om[1, 1] = m[1, 1];
om[1, 2] = m[2, 1];
om[1, 3] = m[3, 1];
om[2, 0] = -m[0, 2];
om[2, 1] = m[1, 2];
om[2, 2] = m[2, 2];
om[2, 3] = m[3, 2];
om[3, 0] = -m[0, 3];
om[3, 1] = m[1, 3];
om[3, 2] = m[2, 3];
om[3, 3] = m[3, 3];
bone.Matrix = om;
iMesh.BoneList.Add(bone);
}
}
//Morphs
if (mesh.m_Shapes != null)
{
foreach (var channel in mesh.m_Shapes.channels)
{
morphChannelInfo[channel.nameHash] = channel.name;
}
if (mesh.m_Shapes.shapes.Count > 0)
{
ImportedMorph morph = null;
string lastGroup = "";
for (int i = 0; i < mesh.m_Shapes.channels.Count; i++)
{
string group = BlendShapeNameGroup(mesh, i);
if (group != lastGroup)
{
morph = new ImportedMorph();
MorphList.Add(morph);
morph.Name = iMesh.Name;
morph.ClipName = group;
morph.Channels = new List<Tuple<float, int, int>>(mesh.m_Shapes.channels.Count);
morph.KeyframeList = new List<ImportedMorphKeyframe>(mesh.m_Shapes.shapes.Count);
lastGroup = group;
}
morph.Channels.Add(new Tuple<float, int, int>(i < sMesh.m_BlendShapeWeights.Count ? sMesh.m_BlendShapeWeights[i] : 0f, morph.KeyframeList.Count, mesh.m_Shapes.channels[i].frameCount));
for (int frameIdx = 0; frameIdx < mesh.m_Shapes.channels[i].frameCount; frameIdx++)
{
ImportedMorphKeyframe keyframe = new ImportedMorphKeyframe();
keyframe.Name = BlendShapeNameExtension(mesh, i) + "_" + frameIdx;
int shapeIdx = mesh.m_Shapes.channels[i].frameIndex + frameIdx;
keyframe.VertexList = new List<ImportedVertex>((int)mesh.m_Shapes.shapes[shapeIdx].vertexCount);
keyframe.MorphedVertexIndices = new List<ushort>((int)mesh.m_Shapes.shapes[shapeIdx].vertexCount);
keyframe.Weight = shapeIdx < mesh.m_Shapes.fullWeights.Count ? mesh.m_Shapes.fullWeights[shapeIdx] : 100f;
int lastVertIndex = (int)(mesh.m_Shapes.shapes[shapeIdx].firstVertex + mesh.m_Shapes.shapes[shapeIdx].vertexCount);
for (int j = (int)mesh.m_Shapes.shapes[shapeIdx].firstVertex; j < lastVertIndex; j++)
{
var morphVert = mesh.m_Shapes.vertices[j];
ImportedVertex vert = GetSourceVertex(iMesh.SubmeshList, (int)morphVert.index);
ImportedVertex destVert = new ImportedVertex();
Vector3 morphPos = morphVert.vertex;
morphPos.X *= -1;
destVert.Position = vert.Position + morphPos;
Vector3 morphNormal = morphVert.normal;
morphNormal.X *= -1;
destVert.Normal = morphNormal;
Vector4 morphTangent = new Vector4(morphVert.tangent, 0);
morphTangent.X *= -1;
destVert.Tangent = morphTangent;
keyframe.VertexList.Add(destVert);
keyframe.MorphedVertexIndices.Add((ushort)morphVert.index);
}
morph.KeyframeList.Add(keyframe);
}
}
}
}
}
//TODO
if (combine)
{
meshR.m_GameObject.TryGetGameObject(out var m_GameObject);
var frame = ImportedHelpers.FindChild(m_GameObject.m_Name, FrameList[0]);
if (frame?.Parent != null)
{
var parent = frame;
while (true)
{
if (parent.Parent != null)
{
parent = parent.Parent;
}
else
{
frame.LocalRotation = parent.LocalRotation;
frame.LocalScale = parent.LocalScale;
frame.LocalPosition = parent.LocalPosition;
break;
}
}
}
}
MeshList.Add(iMesh);
}