| 摘要 |
PURPOSE:To form a solid graphic from two-dimensional graphic information by forming a polyhedron to make a closed graphic demarcated by the projection drawing outer shape line of the first, second and third projection drawings and a projection line to project an outer shape line in the depth direction into respective surfaces and executing the AND processing. CONSTITUTION:For example, three projection drawings of a front elevation, a plan and a left side drawing drawn by the third angle projection are used as graphic information. A graphic information input device 302 to input three projection drawings to a data processing device 303 and a graphic information output device 305 to output a slid model defined from the device 303 are provided. The device 303 is composed of a graphic information memory device 304 to store the graphic information, an outer shape line extracting processing module 306 to extract the outer shape line by grasping the outline of an inputted projection drawing, a surface definition processing module 307 to surface-define the area surrounded by four segments and a logical processing module 308 to obtain the AND of three polyhedrons and define the three-dimensional graphic.
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