Introduction Hi, I’m Glenn Fiedler. Welcome to Virtual Go, my project to create a physically accurate computer simulation of a Go board and stones. In this article we want to draw the go stone using OpenGL. Unfortunately we can’t just tell the graphics card, “Hey! Please draw the intersection of two spheres with radius r and d apart with a bevel torus r1 and r2!”, because modern 3D graphics cards work by drawing triangles.
