public static SkinningInfo Create(GltfData data, glTFMesh mesh, glTFPrimitives primitives)
{
var hasMorphTarget = HasMorphTarget(mesh);
var positions = data.GLTF.accessors[primitives.attributes.POSITION];
var skinning = new SkinningInfo
{
Joints = primitives.GetJoints(data, positions.count),
Weights = primitives.GetWeights(data, positions.count),
};
if (skinning.Joints != null)
{
// use SkinnedMeshRenderer
return(skinning);
}
else if (!hasMorphTarget)
{
// use MeshRenderer
return(skinning);
}
else
{
// use SkinnedMeshRenderer without boneWeight.
// https://github.com/vrm-c/UniVRM/issues/1675
return(new SkinningInfo
{
ShouldSetRendererNodeAsBone = true,
Joints = _ => (0, 0, 0, 0),
Weights = _ => (1, 0, 0, 0), // assign weight 1
});
public override void Read(BinaryReader b)
{
base.Read(b);
SkipBytes(b, 32); // Padding between the chunk header and the first bone.
Vector3 localTranslation;
Matrix33 localRotation;
// Read the first bone with ReadCompiledBone, then recursively grab all the children for each bone you find.
// Each bone structure is 324 bytes, so will need to seek childOffset * 584 each time, and go back.
NumBones = (int)((Size - 48) / 324);
for (int i = 0; i < NumBones; i++)
{
var tempBone = new CompiledBone();
tempBone.ReadCompiledBone_801(b);
if (RootBone == null) // First bone read is root bone
{
RootBone = tempBone;
}
tempBone.LocalTranslation = tempBone.boneToWorld.GetBoneToWorldTranslationVector(); // World positions of the bone
tempBone.LocalRotation = tempBone.boneToWorld.GetBoneToWorldRotationMatrix(); // World rotation of the bone.
//tempBone.ParentBone = BoneMap[i + tempBone.offsetParent];
tempBone.ParentBone = GetParentBone(tempBone, i);
if (tempBone.ParentBone != null)
{
tempBone.parentID = tempBone.ParentBone.ControllerID;
}
else
{
tempBone.parentID = 0;
}
if (tempBone.parentID != 0)
{
localRotation = GetParentBone(tempBone, i).boneToWorld.GetBoneToWorldRotationMatrix().ConjugateTransposeThisAndMultiply(tempBone.boneToWorld.GetBoneToWorldRotationMatrix());
localTranslation = GetParentBone(tempBone, i).LocalRotation *(tempBone.LocalTranslation - GetParentBone(tempBone, i).boneToWorld.GetBoneToWorldTranslationVector());
}
else
{
localTranslation = tempBone.boneToWorld.GetBoneToWorldTranslationVector();
localRotation = tempBone.boneToWorld.GetBoneToWorldRotationMatrix();
}
tempBone.LocalTransform = GetTransformFromParts(localTranslation, localRotation);
BoneList.Add(tempBone);
BoneDictionary[i] = tempBone;
}
// Add the ChildID to the parent bone. This will help with navigation. Also set up the TransformSoFar
foreach (CompiledBone bone in BoneList)
{
AddChildIDToParent(bone);
}
SkinningInfo skin = GetSkinningInfo();
skin.CompiledBones = new List <CompiledBone>();
skin.HasSkinningInfo = true;
skin.CompiledBones = BoneList;
}
private SkinningInfo ConsolidateSkinningInfo(List <Model> models)
{
SkinningInfo skin = new SkinningInfo
{
HasSkinningInfo = models.Any(a => a.SkinningInfo.HasSkinningInfo == true),
HasBoneMapDatastream = models.Any(a => a.SkinningInfo.HasBoneMapDatastream == true)
};
foreach (Model model in models)
{
if (model.SkinningInfo.IntFaces != null)
{
skin.IntFaces = model.SkinningInfo.IntFaces;
}
if (model.SkinningInfo.IntVertices != null)
{
skin.IntVertices = model.SkinningInfo.IntVertices;
}
if (model.SkinningInfo.LookDirectionBlends != null)
{
skin.LookDirectionBlends = model.SkinningInfo.LookDirectionBlends;
}
if (model.SkinningInfo.MorphTargets != null)
{
skin.MorphTargets = model.SkinningInfo.MorphTargets;
}
if (model.SkinningInfo.PhysicalBoneMeshes != null)
{
skin.PhysicalBoneMeshes = model.SkinningInfo.PhysicalBoneMeshes;
}
if (model.SkinningInfo.BoneEntities != null)
{
skin.BoneEntities = model.SkinningInfo.BoneEntities;
}
if (model.SkinningInfo.BoneMapping != null)
{
skin.BoneMapping = model.SkinningInfo.BoneMapping;
}
if (model.SkinningInfo.Collisions != null)
{
skin.Collisions = model.SkinningInfo.Collisions;
}
if (model.SkinningInfo.CompiledBones != null)
{
skin.CompiledBones = model.SkinningInfo.CompiledBones;
}
if (model.SkinningInfo.Ext2IntMap != null)
{
skin.Ext2IntMap = model.SkinningInfo.Ext2IntMap;
}
}
return(skin);
}
