If I were standing in a equilateral triangle - How do I calculate the inverse of my position? Can it be done? It's easy inside a rectangle, but I can't think of how you would do it inside of a triangle.
For instance if I'm in one corner of a rectangle, I know the inverse of my position is the opposite corner. But with a triangle it is different. I suspect there must be a way to calculate an inverse, or maybe just the farthest point from any given point.
I'm working on a color theory in case it matters.