I hope whoever wrote this sample realized this code would be duplicated a zillion times. Just search for snippets as literal strings in google.
Seems pretty easy to build a sprite package based on OpenGL. Coco3D and others are out there, but it's easier to write something from scratch than plow through a stack of documentation. Also, the tendency for "platform" writers to throw in kitchen sinks is too great (actually Walter has always pointed out that platform writers have a tendency to ship an API that minimally fulfils the requirements of the sample apps and nothing more, therefore signing up pre-alpha developers is super, super important)
Lean, mean, and clean code.