| 摘要 |
PURPOSE:To efficiently change shape by making a plotting operation executed when the shape is generated conform to geometrical restriction to regulate the shape to be generated, respectively, and using information in which the relation of the geometrical restrictions is stored. CONSTITUTION:The plotting operation performed with a user is stored in a shape input history storage part 7, and the information of size relation and dependence between them stored in the part are extracted, and the information are stored in a dependence storage part 12. Then, the plotting operation relating to shape change is retrieved by referring to the shape input history storage part 7 or the dependence storage part 12 when the change or addition of size is performed, and the reverse operation of the plotting operation, etc., is automatically executed. In such a way, it is not required to add additional information for shape correction on a shape model, and the shape change can be efficiently performed.
|
