Method SetupSkeleton

Source/Engine/Content/Assets/SkinnedModel.cpp:262–304

}

bool SkinnedModel::SetupSkeleton(const Array<SkeletonNode>& nodes)
{
    // Validate input
    if (nodes.Count() <= 0 || nodes.Count() > MAX_uint16)
        return true;
    auto model = this;
    if (!model->IsVirtual())
        return true;

    ScopeLock lock(model->Locker);

    // Setup
    model->Skeleton.Nodes = nodes;
    model->Skeleton.Bones.Resize(nodes.Count());
    for (int32 i = 0; i < nodes.Count(); i++)
    {
        auto& node = model->Skeleton.Nodes[i];
        model->Skeleton.Bones[i].ParentIndex = node.ParentIndex;
        model->Skeleton.Bones[i].LocalTransform = node.LocalTransform;
        model->Skeleton.Bones[i].NodeIndex = i;
    }
    model->Skeleton.Dirty();
    ClearSkeletonMapping();

    // Calculate offset matrix (inverse bind pose transform) for every bone manually
    for (int32 i = 0; i < model->Skeleton.Bones.Count(); i++)
    {
        Matrix t = Matrix::Identity;
        int32 idx = model->Skeleton.Bones[i].NodeIndex;

        do
        {
            t *= model->Skeleton.Nodes[idx].LocalTransform.GetWorld();
            idx = model->Skeleton.Nodes[idx].ParentIndex;
        } while (idx != -1);

        t.Invert();

        model->Skeleton.Bones[i].OffsetMatrix = t;
    }

    return false;
}

bool SkinnedModel::SetupSkeleton(const Array<SkeletonNode>& nodes, const Array<SkeletonBone>& bones, bool autoCalculateOffsetMatrix)
{