I have an OpenGL Tessellated Sphere and I want to cut a cylindrical hole in it

Question

I am working on a piece of software which generated a polygon mesh to represent a sphere, and I want to cut a hole through the sphere. This polygon mesh is only an overlay a

Answer 1

Sounds like you want constructive solid geometry.

Carve might do what you want. If you just want run-time rendering OpenCSG will work.