isCollinear

fun isCollinear(p1: Point, p2: Point, p3: Point): Boolean
fun isCollinear(p1x: Float, p1y: Float, p2x: Float, p2y: Float, p3x: Float, p3y: Float): Boolean
fun isCollinear(xa: Double, ya: Double, x: Double, y: Double, xb: Double, yb: Double): Boolean
fun isCollinear(xa: Int, ya: Int, x: Int, y: Int, xb: Int, yb: Int): Boolean