Method of computer-aided design of a 3D object modeled by geometries

摘要

The invention is directed to computer program and system, and a method of computer-aided design of a 3D object modeled by: - cells, the cells being restrictions of geometries of the model; and - a cell graph comprising relations between the cells, which relations capture a topology of the model, the method comprising the steps of: - editing (S100) an initial model (10, 12, 14) by interacting with a user to identify intended displacements of initial geometries (12) of the model; and selecting the cells which are restrictions of the geometries to be displaced; - collecting (S200) cells adjacent to the selected cells according to the cell graph, some of the adjacent cells being excluded by means of predefined rules; - computing (S300) by a solver transformations (46) to be applied to initial geometries (12), from the intended displacements (34) and geometries (32) whose collected cells are restrictions thereof; and - building (S400) new geometries (52) according to said transformations and initial geometries (12).