Function flo_curves::bezier::subdivide4

pub fn subdivide4<Point: Coordinate>(
    t: f64, 
    w1: Point, 
    w2: Point, 
    w3: Point, 
    w4: Point
) -> ((Point, Point, Point, Point), (Point, Point, Point, Point))

Subdivides a cubic bezier curve at a particular point, returning the weights of the two component curves