Instance Method
unitVector(atNodeIndex:)
The tangent unit vector at a node index, or nil when no tangent can be determined.
Not available in Objective-C.Not available in Python.
Declaration
func unitVector(atNodeIndex nodeIndex: Int) -> CGPoint?See Also
Tangents
The tangent angle at a node, or
nilwhen no tangent can be determined.The tangent angle at a node index, or
nilwhen no tangent can be determined.The tangent unit vector at a node index, or
nilwhen no tangent can be determined.