Computing the orthographic projection aspect graph of solids of revolution

The first algorithm to handle a defined class of curved-surface objects is presented. The algorithm automatically computes the partition of the Gaussian sphere, and thereby the aspect graph, for solids of revolution defined as right, circular, straight, homogeneous generalized cylinders. The algorithm demonstrates that it is possible to compute the exact aspect graph for at least some classes of curved-surface objects. The obvious extension of this work is to attempt to apply the same or a similar approach to larger and more varied classes of objects