title: Simple 2D graphics in Objective C (GNUStep)
body: <p>I'm creating a simple agent-based modeling-framework and I'd like to provide some very simple visualizations. Nothing too fancy, and mainly just 2D graphics. Can I use OpenGL or SDL with Objective C on GNUStep? How would I go about doing this? I tried looking for some examples, but couldn't find any. Will C examples that use OpenGL or SDL play nice with Objective C?</p>