Perspective 3D object Viewer (small bug fix)

This is a 3d object viewer (object files included) that renders at relatively high speed for pure vb. The viewer is well made but the class is a well commented masterpiece. It can rotate, move, and scale the objects, order their polygons with quicksort (Z Ordering), and render in points, wireframe, or solid stlyes. It also implements basic lighting effects and backface removal. Comments are appreciated.