Résumé: When a single computer or network deals with large and complex assembly, a special method to compress or simplify the assembly is needed. One method is the use of a multi- resolution modeler, for which many approaches have been tried to obtain multi- solutions. Some of these approaches have considered triangular mesh compression, while some have considered features and topologies. This paper proposes a method for simplifying boundary representation models, in which the wrapping of products using the plastic wrap in the kitchen has been imitated. In wrapping, the plastic wrap hides the details of a product. This method is composed of two steps. The .rst step is the part level wrap- around operation. In this step, a convex inner loop is used as a clue to .nd concave space and .ll this space by removing the convex inner loop. After .lling the concave space, the faces that cannot be seen from outside the model are removed. The level of detail in our model was de .ned using a set composed of convex inner loop and faces that are removed with the convex inner loop. The second step is assembly level wrap- around operation. As a result of .rst step, an overlap between parts exists and faces that cannot be seen from outside of the model exist. These faces are deleted in the second step. Graph traverse method used to .nd these faces is presented. The proposed method is implemented using Parasolid kernel V12.1 and allows arbitrary movement to coarser and .ner resolution.

Langue: Anglais