I have a 2D path that follows series of lines thru points p1 p2 p3 p4.
I want to make a tunnel out of this path, so I need to split this path in two sideways and make a hole inside of it. Like this:
________ ____/ \_____ _______ ____/ \_____
How do I do that?
I actually want to just generate a random tunnel it doesn't have to follow a path.