simulation of simplicity: a technique to cope with degenerate cases in geometric algorithms
This paper describes a general purpose programming technique, called the Simulation of Simplicity, which can be used to cope with degenerate input data for geometric algorithms. It relieves the programmer from the task to provide a consistent treatment for every single special case that can occur. The programs that use the technique tend to be considerably smaller and more robust than those obtained without using it. We believe that this technique will become a standard tool in writing geometric software.
simulation general case algorithm paper program use input data programmer task consistency robust standardization tool writing software