cubicCalc

inline fun <T> cubicCalc(    x0: Double,     y0: Double,     x1: Double,     y1: Double,     x2: Double,     y2: Double,     x3: Double,     y3: Double,     t: Ratio,     emit: (x: Double, y: Double) -> T): T
fun cubicCalc(p0: Point, p1: Point, p2: Point, p3: Point, t: Ratio): Point