splitting a sphere

[nick800]

is there an easy way to draw just half a sphere?

[SThomas]

well, if you tesselate the sphere yourself, you can easily change the code to only generate half a sphere. otherwise, the easiest way i can think of would be to specify your own clip plane using glClipPlane() (http://www.cevis.uni-bremen.de/~uwe/opengl/glClipPlane.html) .