i’m making a polygon class that contains a variable number of coplanar vertices. i’d like to draw the normal to the plane that the polygon lies in. i have a plane class, consisting of A, B, C and D in the plane equation: Ax + By + Cz + D = 0. i know the normal to the plane is the directional vector (A, B, C). all need is two points on a line parallel to the normal to be able to draw it. any help?