cardinal(pt1: Vec2, m1: Vec2, m2: Vec2, pt2: Vec2, tension: number): Vec2

A second order function returning an evaluator for the given 2D Cardinal curve

parampt1- Previous point

paramm1- First point

paramm2- Second point

parampt2- Next point

paramtensionThe tension of the curve, [0..1] from round to tight.

returnsA function which gives the value on the 2D Cardinal curve at t