| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for easily prepare a three-dimensional duct diagram from a two-dimensional arrangement plan. SOLUTION: This method for preparing a three-dimensional diagram comprises the following steps for: inputting a reference line (20) having a prescribed attribute in an object on a two-dimensional diagram (D1) drawn by a CAD (computer aided design); associating dimension information including dimensions in the reference line (20) and inputting the dimension information; and preparing a three-dimensional diagram (D3) bt a computer (1) from the reference line (20) and the dimension information. COPYRIGHT: (C)2004,JPO
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