Retroactive Decomposition For Edge Matching Process in Parametric Systems
Résumé
Nowadays, parametric systems support history-based, constraint-based and feature-based modeling. One of the main tasks of these systems is
to maintain the design history. Unfortunately, most of them fail during the reevaluation phase when various kinds of topological changes
occur. This issue is known as ”persistent naming” which refers to the problem of identifying entities in an initial model and matching them in the reevaluated model, especially for edges resulting from non-planar intersections. Although related works ensure the uniqueness of the references to topological entities, they often neglect the shape characteristics of surfaces and give results different from those expected during design reevaluation. For this reason, those works are still not enough powerful to find the right mapping in some situations. We propose in this paper
a method to add some additional information about surfaces to improve such works. We compute those information by making a decomposition of surfaces into sub-surfaces: hump(s) and/or hollow(s). Moreover, when the faces which intersect are deformed during the reevaluation phase, a retroactive decomposition operation is applied. This last en ables to map the sub-surfaces resulting from the initial decomposition in order to have the right edge mappings.
Origine : Fichiers produits par l'(les) auteur(s)
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