Updated Basically Everything - It all works

Perfected the distance calculation using better trig.
Only grabs outer contour of correct 3pt goal, hopefully ifnoreing all of
the other stuff in the arena. Only time will tell when it comes to that.

Used globalwidth/height variables to manage resizing to fit multiple
windows on screen

added multiple print statements

Other stuff that I can't remember. It all works, though, which is the
important part.