Run 'triangle.py' and use the right button to zoom out of the molecule.  
Use the left button to spin.

The routine used to generate the molecular surface is due to:

Sanner, M.F., Spehner, J.-C., and Olson, A.J. (1996) Reduced surface: an
efficient way to compute molecular surfaces. Biopolymers, Vol. 38, (3),
305-320.