
380 10. Modeling with polygonal datasets
vague statements. For example, to comply with the wishes of the instruction “...
this reduces the number of sides by one, repeat the procedure with the rem aining
sides ...” some way of logically recognizing that an edge has been removed from
the polygon must be found. Probably the best approach to resolve th is specific
issue is to design and use temporary data structures. The temporary structures
will be used only during the execution of a particular algorithm. When it finishes
resources allocated temporarily will be released.
The advantage of using temporary structures is that the primary vertex, edge
and facet ...