Selwyn's Passability Mini Map (Mod Request)

[RyosukeTakahashiReX7]

I've been messing around with the Selwyn's Passability Mini Map (2nd favorite mod, next to Mr. Mo's ABS) for a little while now, but I'm not too experienced in Ruby yet. I was curious in seeing if it was possible to change the minimap display from a rectangular display to a circular display.

If anyone has any suggestions on modifing the code to fit the passability map display to fit the circular radar, I'd be very greatful.