parentIndex
The index of this joint’s parent, or nil if this joint has no parent.
Declaration
var parentIndex: Int?Discussion
If the joint has a parent, the index of the parent needs to be lower than that of the child.
The index of this joint’s parent, or nil if this joint has no parent.
var parentIndex: Int?If the joint has a parent, the index of the parent needs to be lower than that of the child.