Method of computer-aided design of edges connecting faces of...

G - Physics – 06 – T

Patent

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G06T 17/10 (2006.01)

Patent

CA 2697731

The invention is directed method of computer-aided design of edges connecting faces of a modeled object, the method comprising a step of: - determining (S100 - S130) a structure of subsets of faces and edges of specified convex or concave type, by iteratively disconnecting (~S120~) faces connected by edges of one type from a parent subset, whereby said parent subset is decomposed into child subsets comprising either: - a non-connected face; or - faces connected by edges of the other type, in which case edges of said one type are maintained in said child subset, wherein said one type of edges is further alternated at each iteration of disconnecting; and the method further comprising a step of: - processing (S140) the structure from a given parent subset for rounding or filleting the one or more edges connecting child subsets thereof, according to the type of edge as specified in said given parent subset. More generally, the present invention may further be directed to the design of implementation of two distinct technologies for processing features connecting elements a model, in place of design of edges connecting faces of a modelled object.

L'invention concerne un procédé de conception assistée par ordinateur pour arêtes reliant les faces d'un objet modélisé. Le procédé consiste : à déterminer (S100 - S130) une structure de sous-ensembles de faces et d'arêtes de type spécifié convexe ou concave par déconnexion itérative (S120) d'un sous-ensemble parent des faces reliées par des arêtes d'un type, ce qui décompose le sous-ensemble parent en sous-ensembles enfants comprenant soit une face non reliée, soit des faces reliées par des arêtes de l'autre type, auquel cas les arêtes du premier type sont maintenues dans le sous-ensemble enfant, le premier type d'arête étant en outre alterné à chaque itération de déconnexion; et à traiter (S140) la structure d'un sous-ensemble parent donné pour polir ou fileter la ou les arêtes reliant ses sous-ensembles enfants, conformément au type d'arête spécifié dans le sous-ensemble parent donné. Plus généralement, la présente invention peut en outre concerner la conception de la mise en uvre de deux technologies distinctes pour traiter des caractéristiques reliant les éléments d'un modèle en remplacement de la conception d'arêtes reliant les faces d'un objet modélisé.

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