| 摘要 |
PCT No. PCT/JP84/00348 Sec. 371 Date Mar. 6, 1985 Sec. 102(e) Date Mar. 6, 1985 PCT Filed Jul. 7, 1984 PCT Pub. No. WO85/00444 PCT Pub. Date Jan. 31, 1985.The method involves entering section data relating to two sections (11, 12) of a three-dimensional curved body, data relating to first and second section curves (11a, 12a) formed by the two sections (11, 12), and data relating to a three-dimensional curve (31a) which contains points (P1, P1') on the first and second section curves, and which specifies the external shape of the three-dimensional curved body. An intermediate section (41) is generated for each and every one of partition points (Si) (i=1, 2, 3 . . . ) that partition the three-dimensional curve (31a) into a multiplicity of line elements, the intermediate section containing the respective partition point. An intermediate section curve (41a) in the intermediate section is calculated by using the data relating to the two section curves (11a, 12a) and position information indicative of the partition points (Si), and a curved surface of a three-dimensional curved body is created by the intermediate section curves.
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