Genesis reference manual

Boundary solid grammars is a rule-based formalism for generating complex models of rigid solid objects. Solids are represented by their boundary elements, i.e. vertices, edges, and faces, with coordinate geometry associated with the vertices. Non-geometric da ta may be associated with any of these elements. Rules are used to match conditions of a solid or collection of solids and then modify them or create additional solids. A boundary solid grammar consists of an initial solid and a set of rules. It produces a language or family of solid models. The boundary solid grammar formalism is implemented in the G e n e s i s boundary solid grammar interpreter. G e n e s i s provides facilities for representation and display of solids, match conditions, solid modeling operations, rule and grammar definition, and searching through the language of a g rammar . This reference manual details the facilities provided by the G e n e s i s boundary solid grammar interpreter.