getControlPoint(at:values:)
Returns the control point for the specified index.
Declaration
func getControlPoint(at idx: Int, values ptr: UnsafeMutablePointer<Float>)Parameters
- idx:
An integer specifying the index of the control point to return.
- ptr:
A pointer to an array that, upon return, will contain the x and y values of the specified point.
Discussion
The value of index must be between 0 and 3.