Methods for automatically generating a three-dimensional geometric solid from two-dimensional view sets including automatic segregation of open, closed and disjoint curves into views using their center of gravity

摘要

Techniques are developed for defining an engine which has as its input two-dimensional drawing views, wherein the engine produces a three- dimensional geometric solid. The engine comprises, among other things, a set of rules for identifying particular elements within the various two- dimensional views, and for determining the useful relationships between elements (e.g., arcs, lines, and the like) in one view vis-a-vis related elements in another view, to thereby ascertain the three-dimensional form defined by these elements and their corresponding relations to other elements.