I ran that and played around with it, but am a little confused as to what the radius of 50 is referring to. It seems a little arbitrary.
I suppose if I was to say what I wanted in a sample, it would be to have a scene and then add a plane to it. Then, in the update event for that scene update rotateX, rotateY, rotateZ, scaleX, scaleY, scaleZ, x, y and z for that plane. Then, after applying some or all of those operations, draw a 2d rect on the screen corresponding to the bounding box of that plane