US 7,321,364 B2 | ||
Automated translation of high order complex geometry from a CAD model into a surface based combinatorial geometry format | ||
Steven J Manson, Tucson, Ariz. (US) | ||
Assigned to Raytheon Company, Waltham, Mass. (US) | ||
Filed on May 04, 2004, as Appl. No. 10/838,411. | ||
Claims priority of provisional application 60/471580, filed on May 19, 2003. | ||
Prior Publication US 2004/0233194 A1, Nov. 25, 2004 | ||
Int. Cl. G06T 17/00 (2006.01) |
U.S. Cl. 345—420 [345/419] | 30 Claims |
1. A computer implemented system, comprising:
a CAD system that generates a CAD model for an assembly including at least one mechanical part, said CAD model producing a
list of trimmed surfaces for each said part that form a bounded analytic representation of a high order geometry surface in
space;
a software tool that discretizes the part to produce a first list of nodes that lie on the part and a second list of nodes
that lie in a void space;
a translation program that translates the lists of trimmed surfaces and nodes into a surface-based combinatorial geometry
(SBCG) format including a list of analytic surfaces having bounding surfaces and ambiguity surfaces and a well-posed zoning
statement and optimizing the well-posed zoning statement to eliminate redundant analytic surfaces and merge zones subject
to a constraint that the zoning statement remain well-posed; and
a ray-tracing program that operates on data in the SBCG format for said at least one mechanical part to analyze non-mechanical
properties of the assembly.
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