Determining the 3D coordinates on a polygon's surface
I'm after a way to find the 3D coordinates of random points on a cube polygon.
I've created a cube polygon and dragged it somewhere in the scene. Now I obviously have its centre's coordinates, and mathmetically, should be able to determine the coordinate of any point of its surface but that would be troublesome.
Is there a way that I can find the coordinates of any arbitary point on the surface by clicking on it?
Any help would be appreciated - M