void ReadBone(ref CByteArray oBA, Transform oBoneParent)
{
// Precise opposite of gBlender.Stream_SendBone(): Reads a bone from Blender, finds (or create) equivalent Unity bone and updates position
string sBoneName = oBA.ReadString();
Vector3 vecBone = oBA.ReadVector(); // Bone position itself.
Quaternion quatBone = oBA.ReadQuaternion(); // And its quaternion rotation (in Blender's 90-degree rotated about x domain)
Transform oBone = oBoneParent.FindChild(sBoneName);
if (oBone == null) {
oBone = new GameObject(sBoneName).transform;
oBone.parent = oBoneParent;
}
Debug.LogFormat("ReadBone created bone '{0}' under '{1}' with rot:{2:F3},{3:F3},{4:F3},{5:F3} / pos:{6:F3},{7:F3},{8:F3}", sBoneName, oBoneParent.name, quatBone.x, quatBone.y, quatBone.z, quatBone.w, vecBone.x, vecBone.y, vecBone.z);
oBone.position = vecBone;
oBone.rotation = quatBone;
oBone.Rotate(new Vector3(1, 0, 0), 90, Space.World); //###LEARN!!!: How to rotate about a global x-axis!
oBone.Rotate(new Vector3(0, 0, 1), 180, Space.Self); // Rotate about Z axis so bone points +Y from parent bone to child ###CHECK!
int nBones = oBA.ReadByte();
for (int nBone = 0; nBone < nBones; nBone++)
ReadBone(ref oBA, oBone);
}
//--------------------------------------------------------------------------- INIT
public override void OnDeserializeFromBlender()
{
base.OnDeserializeFromBlender(); // First call the CBMesh base class to serialize the mesh itself...
_oSkinMeshRendNow = (SkinnedMeshRenderer)CUtility.FindOrCreateComponent(transform, typeof(SkinnedMeshRenderer));
////=== Send blender command to obtain the skinned mesh info ===
CByteArray oBA = new CByteArray("'CBody'", _oBodyBase._sBlenderInstancePath_CBodyBase + _sNameCBodyInstanceMember + ".Unity_GetMesh_SkinnedInfo()");
//===== RECEIVE SKINNING INFORMATION =====
Matrix4x4[] aSkinBindPoses = null; //###WEAK: A bit of unfortunate structure imposed on the code because of how late we read the stream versus how we must init vars for skinned mesh... Can be improved.
Transform[] aSkinBones = null;
List<BoneWeight> aBoneWeights = null;
//=== Read in the flat array of names of vertex groups. This will enable us to map the Blender vertex group blends to our fixed Unity bone rig ===
byte nVertGroupsMesh = oBA.ReadByte();
aSkinBones = new Transform[nVertGroupsMesh];
aSkinBindPoses = new Matrix4x4[nVertGroupsMesh];
//=== Find the root of our skinning bones from our body's main skinned mesh ===
Transform oNodeBoneParentRoot = CUtility.FindChild(_oBodyBase._oBodyRootGO.transform, "Bones");
if (oNodeBoneParentRoot == null)
CUtility.ThrowException("CBMesh is attempting to reconstruct a skinned mesh but was not able to find root node of bones!");
for (byte nVertGroup = 0; nVertGroup < nVertGroupsMesh; nVertGroup++) {
string sVertGroup = oBA.ReadString();
Transform oNodeBone = CUtility.FindNodeByName(oNodeBoneParentRoot, sVertGroup); //###OPT: Recursive on hundreds of bones for hundreds of bones = O squared!! ###IMPROVE: Find by direct path!
if (oNodeBone != null) {
//Debug.Log("Bone found for '" + sVertGroup + "'");
aSkinBones[nVertGroup] = oNodeBone;
aSkinBindPoses[nVertGroup] = oNodeBone.worldToLocalMatrix; //###CHECK
} else {
Debug.LogError("**ERROR: CBMesh.ctor() could not find bone '" + sVertGroup + "'"); //###DESIGN?: Throw?
}
}
//=== Stream in the bone weight info === ###NOTE: Note that this code assumes a compatible bone tree between Blender and Unity!!! To update Unity bones from Blender bones use the CBodyEd.UpdateBonesFromBlender() function
aBoneWeights = new List<BoneWeight>();
int[] aBoneIndex = new int[32]; // Temp arrays
float[] aBoneWeight = new float[32];
int nErrSumOutOfRange = 0;
int nVerts = GetNumVerts();
for (int nVert = 0; nVert < nVerts; nVert++) {
byte nVertGroups = oBA.ReadByte();
float nBoneWeightSum = 0;
if (nVertGroups >= 5) {
Debug.LogWarningFormat("Warning: Skinned mesh '{0}' at vert {1} has {2} vert groups!", _sNameBlenderMesh, nVert, nVertGroups);
CUtility.ThrowException("CBMesh.ctor() encountered a vertex with " + nVertGroups + " vertex groups!");
}
for (byte nVertGroup = 0; nVertGroup < nVertGroups; nVertGroup++) { //###IMPROVE: It might be more elegant to shift this code to Blender Python?
aBoneIndex[nVertGroup] = oBA.ReadByte();
float nBoneWeight = oBA.ReadFloat();
if (nBoneWeight < 0)
//Debug.LogError("CBMesh.ctor() encountered a bone weight below 0 at vert " + nVert + " and vert group " + nVertGroup);
CUtility.ThrowException("CBSkin.ctor() encountered a bone weight below 0 at vert " + nVert + " and vert group " + nVertGroup);
if (nBoneWeight > 1)
//CUtility.ThrowException("CBMesh.ctor() encountered a bone weight over 1 at vert " + nVert + " and vert group " + nVertGroup); //###IMPROVE: Common! What to do? cap??
Debug.LogWarning("CBSkin.ctor() encountered a bone weight over 1 = " + nBoneWeight + " at vert " + nVert + " and vert group " + nVertGroup); //###IMPROVE: Common! What to do? cap??
aBoneWeight[nVertGroup] = nBoneWeight;
nBoneWeightSum += nBoneWeight;
}
if (nBoneWeightSum < 0.999 || nBoneWeightSum > 1.001) {
Debug.LogWarning("###W: CBMesh.ctor() vertex " + nVert + " had out of range weight of " + nBoneWeightSum);
nErrSumOutOfRange++;
}
BoneWeight oBoneWeight = new BoneWeight();
if (nVertGroups > 0) { oBoneWeight.boneIndex0 = aBoneIndex[0]; oBoneWeight.weight0 = aBoneWeight[0]; }
if (nVertGroups > 1) { oBoneWeight.boneIndex1 = aBoneIndex[1]; oBoneWeight.weight1 = aBoneWeight[1]; }
if (nVertGroups > 2) { oBoneWeight.boneIndex2 = aBoneIndex[2]; oBoneWeight.weight2 = aBoneWeight[2]; }
if (nVertGroups > 3) { oBoneWeight.boneIndex3 = aBoneIndex[3]; oBoneWeight.weight3 = aBoneWeight[3]; }
aBoneWeights.Add(oBoneWeight);
}
if (nErrSumOutOfRange > 0) //###CHECK: What to do???
Debug.LogWarning("###ERROR: CBSkin.ctor() found " + nErrSumOutOfRange + " bones with out-of-range sums!");
//=== Read the number of errors detected when sending over the blender bone weights... what to do?? ===
int nErrorsBoneGroups = oBA.ReadInt();
if (nErrorsBoneGroups > 0) //###IMPROVE ###CHECK: What to do???
Debug.LogError("###ERROR: CBSkin.ctor() detected " + nErrorsBoneGroups + " blender-side errors while reading in blender mesh!");
oBA.CheckMagicNumber_End();
//=== Finalize the mesh creation by stuffing _oMeshRender into mesh filter or skinned mesh renderer as appropriate ===
UpdateNormals(); // Fix the normals with the just-serialized map of shared normals
_oMeshNow.bindposes = aSkinBindPoses;
_oMeshNow.boneWeights = aBoneWeights.ToArray();
_oSkinMeshRendNow.sharedMesh = _oMeshNow; //###TODO: skinned mesh complex bounds!
_oSkinMeshRendNow.materials = _aMats;
_oSkinMeshRendNow.bones = aSkinBones;
//=== Conveniently reset skinned mesh renderer flags we always keep constant... makes it easier to override the defaults which go the other way ===
_oSkinMeshRendNow.updateWhenOffscreen = true; //###OPT: Should some mesh have this off?
_oSkinMeshRendNow.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.On; //###PERF: Runtime performance of shadows? (All done in different quality settings?)
_oSkinMeshRendNow.receiveShadows = true;
if (_oSkinMeshRendNow.GetComponent<Collider>() != null) //###CHECK: ReleaseGlobalHandles mesh collider here if it exists at gameplay
Destroy(_oSkinMeshRendNow.GetComponent<Collider>());
}
public virtual void OnDeserializeFromBlender()
{
//===== Very important top-level call to begin the process of deserializing a mesh from Blender. Central to all our meshes! =====
//=== Send blender command to obtain the mesh header. This will return a large stream containing material names, bones, bone weight, etc ===
CByteArray oBA = new CByteArray("'CBody'", _oBodyBase._sBlenderInstancePath_CBodyBase + _sNameCBodyInstanceMember + ".Unity_GetMesh()");
//=== Create various casts to subclasses to facilitate deserializing info into the proper subclasses ===
bool bCreatingSkinnedMesh = ((this as CBSkin) != null); // We create a skinned mesh if we're a CBSkin or related rim... otherwise we're (probably) a body part requiring softbody/cloth simulation so we're just a simple mesh
_bConnectedToBlenderMesh = true; // Mark this mesh as having a valid C++ connection to Blender
//=== Read the number of verts and tris. Must be < 64K for Unity! ===
int nVerts = oBA.ReadInt();
int nTris = oBA.ReadInt();
byte nMats = oBA.ReadByte();
Debug.Log("CBMesh obtains mesh '" + _sNameCBodyInstanceMember + "' for body '" + _oBodyBase._nBodyID + "' with " + nVerts + " verts " + nTris + " triangles and " + nMats + " materials.");
if (nVerts > 65530)
CUtility.ThrowException("ERROR in CBMesh.ctor(). Mesh has over 64K verts: " + nVerts);
//=== Create the new mesh / skinned mesh now that we have the beginning of a valid stream ===
MeshFilter oMeshFilter = null;
MeshRenderer oMeshRenderer = null;
if (bCreatingSkinnedMesh == false) {
oMeshFilter = (MeshFilter) CUtility.FindOrCreateComponent(transform, typeof(MeshFilter));
oMeshRenderer = (MeshRenderer)CUtility.FindOrCreateComponent(transform, typeof(MeshRenderer));
}
_oMeshNow = new Mesh(); // Create the actual mesh the object will use. Will persist throughout...
//_oMeshNow.MarkDynamic(); //###CHECK: Use by default or case-by-case basis in subclasses?? ###OPT!
if (GetComponent<Collider>() != null)
Destroy(GetComponent<Collider>()); //###LEARN: Hugely expensive mesh collider created by the above lines... turn it off!
//===== READ THE MATERIALS =====
//=== Read the material list from Blender and create the necessary materials linking to the provided texture images ===
_aMats = new Material[nMats];
for (byte nMat = 0; nMat < nMats; nMat++) {
string sCodedMaterial = oBA.ReadString();
sCodedMaterial = sCodedMaterial.Replace('\\', '/'); // Replace backslashes to the slash Unity requires.
if (sCodedMaterial != "NoTexture") { //###IMPROVE: What to do?? ###IMPROVE: Standarize constants between blender and Unity!
if (sCodedMaterial.StartsWith("Material_")) { // Blender material that start with this string are processed differently: We attempt to find the same name material here and attach to this submesh.
Material oMat = Resources.Load("Materials/" + sCodedMaterial, typeof(Material)) as Material;
if (oMat != null)
_aMats[nMat] = oMat;
else
Debug.LogWarning("ERROR: Unknown special material '" + sCodedMaterial + "' in CBMesh.ctor()");
} else {
int nLocTexPath = sCodedMaterial.IndexOf(CGame.C_RelPath_Textures); // Blender gives a fully-qualified path that MUST point to our Resources folder
if (nLocTexPath != -1) {
string sTextureResourcePath = sCodedMaterial.Substring(nLocTexPath + CGame.C_RelPath_Textures.Length);
int nLocExtDot = sTextureResourcePath.IndexOf('.'); // Strip the extension... ###CHECK: Assume jpg throughout??
if (nLocExtDot != -1)
sTextureResourcePath = sTextureResourcePath.Substring(0, nLocExtDot);
Material oMat = Resources.Load(sTextureResourcePath + "_Mat", typeof(Material)) as Material; // We attempt to load the pre-defined material with _Mat suffix if its there...
if (oMat == null) {
if (sTextureResourcePath.EndsWith("_Transp")) // If texture ends with this string we create a standard transparent material
oMat = new Material(Shader.Find("Transparent/Diffuse"));
else
oMat = new Material(Shader.Find("Diffuse")); // If material was not found (usual case) we just create a standard diffuse on
//Debug.Log("-Texture: " + sTextureResourcePath);
object o = Resources.Load(sTextureResourcePath, typeof(Texture));
Texture oTex = o as Texture;
if (oTex != null) {
int nLocLastSlash = sTextureResourcePath.LastIndexOf('/');
oMat.name = sTextureResourcePath.Substring(nLocLastSlash + 1);
oMat.mainTexture = oTex;
} else {
Debug.LogError("**ERROR: Texture '" + sTextureResourcePath + "' not found!");
}
} else {
//Debug.Log("-Material: " + sTextureResourcePath); // If material was defined we leave it to material designer to connect whatever texture...
}
_aMats[nMat] = oMat;
} else {
Debug.LogError("ERROR: in CBMesh.ctor(). Could not find Unity resource path in texture path " + sCodedMaterial);
}
}
}
}
if (nMats == 0) { // If Blender didn't have a material for this mesh we now create a dummy one as we need at least one 'submesh' for DLL to pass in triangles to us ===
nMats = 1;
_aMats = new Material[nMats];
_aMats[0] = new Material(Shader.Find("Diffuse")); // Create a default material so we can see the material-less Blender mesh in Unity
}
_oMeshNow.subMeshCount = nMats;
oBA.CheckMagicNumber_End(); // Check the 'end magic number' that always follows a stream.
//===== CREATE THE MESH =====
//=== Create the memory buffers that can extract the data from our C++ dll ===
CMemAlloc<Vector3> memVerts = new CMemAlloc<Vector3>();
CMemAlloc<Vector3> memNormals = new CMemAlloc<Vector3>(); //###DESIGN! ###OPT!! We don't use Blender's normals anymore... keep serializing??
CMemAlloc<Vector2> memUVs = new CMemAlloc<Vector2>();
memVerts .Allocate(nVerts);
memNormals.Allocate(nVerts);
memUVs .Allocate(nVerts);
//=== With the header data process, the GetMeshHeader command also copied the large verts & tri arrays in shared memory for us to access quickly ===
int nError = ErosEngine.gBL_GetMeshArrays(_sNameBlenderMesh, nMats, memVerts.P, memNormals.P, memUVs.P);
if (nError != 0)
CUtility.ThrowException("Exception in CBMesh.ctor(). gBL_GetMeshArrays('" + _sNameBlenderMesh + "') returns error " + nError + " on mesh " + gameObject.name);
_oMeshNow.vertices = memVerts.L;
_oMeshNow.normals = memNormals.L;
_oMeshNow.uv = memUVs.L;
//=== Create separation of mesh by material ===
for (int nMat = 0; nMat < nMats; nMat++) {
int nTrisThisMat = ErosEngine.gBL_GetNumTrianglesAtMaterial(nMat); //###HACK: These are 'last access' only!
if (nTrisThisMat > 0) { //###IMPROVE: Issue warning when no materials? (So Blender mesh can clean up its unused materials)?
CMemAlloc<int> memTris = new CMemAlloc<int>();
memTris.Allocate(3 * nTrisThisMat); // Number of triangles = 3 * number of triangles
ErosEngine.gBL_GetTrianglesAtMaterial(nMat, memTris.P);
_oMeshNow.SetTriangles(memTris.L, nMat);
}
}
//=== Read the 'shared normals' flattened map ===
_aMapSharedNormals = CByteArray.GetArray_USHORT("'CBody'", _oBodyBase._sBlenderInstancePath_CBodyBase + _sNameCBodyInstanceMember + ".aMapSharedNormals.Unity_GetBytes()");
//=== Finalize the mesh creation by stuffing _oMeshRender into mesh filter or skinned mesh renderer as appropriate ===
if (bCreatingSkinnedMesh == false) {
UpdateNormals(); // Fix the normals with the just-serialized map of shared normals
_oMeshNow.RecalculateBounds();
oMeshRenderer.materials = _aMats;
oMeshFilter.mesh = _oMeshNow;
}
_memVerts .AssignAndPin(_oMeshNow.vertices);
_memVertsStart .AssignAndPin(_oMeshNow.vertices);
_memNormals .AssignAndPin(_oMeshNow.normals);
_memTris .AssignAndPin(_oMeshNow.triangles);
//=== Mesh is loaded in Unity. Close link to Blender to save memory unless maintaining the link is requested by base class ===
if (_bKeepBlenderShare == false)
ReleaseBlenderMesh();
}