Skeleton.cs

private static void BuildSkeletonRecursive(SceneNode node, List<SkeletonBone> skeleton, List<SkeletonBone> rawJoints, int parentJointIndex)
{
    switch(node.Type)
    {
        case J3DFileResource.HierarchyDataTypes.NewNode:
            parentJointIndex = skeleton.Count - 1;
            break;

        case J3DFileResource.HierarchyDataTypes.Joint:
            var joint = rawJoints[node.Value];

            if(parentJointIndex < skeleton.Count)
                joint.Parent = skeleton[parentJointIndex];
            skeleton.Add(joint);
            break;
    }

    foreach (SceneNode child in node.Children)
        BuildSkeletonRecursive(child, skeleton, rawJoints, parentJointIndex);
}