| 摘要 |
A computer program, system and method of computer-aided design of a 3D object. The 3D object is modeled by: (i) cells, the cells being restrictions of geometries of the model; and (ii) a cell graph comprising relations between the cells, which relations capture a topology of the model. The invention system edits an initial model by interacting with a user to identify intended displacements of initial geometries of the model. The system then selects the cells which are restrictions of the geometries to be displaced. Cells adjacent to the selected cells are collected according to the cell graph. Some of the adjacent cells are excluded by means of predefined rules. A solver computes transformations to be applied to initial geometries, from the intended displacements and geometries whose collected cells are restrictions thereof. Lastly the system builds new geometries according to the transformations and initial geometries.
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