| 摘要 |
PROBLEM TO BE SOLVED: To set a CAD system for installing furring strips and external wall materials on a panel. SOLUTION: In a calculation processing device 1, a part file is read from the part data storage area 6 of a storage device 2, a decrement area file is read from the decrement area data storage area 7 of the storage device 2, and a set file is read from a set data storage area 8. Based on the size and shape of a part in the part file, the position of the part in the three-dimensional coordinate system of the set file and the area of the part and the decrement area in the decrement area file, the calculation processing device 1 expresses the decrement area by the three-dimensional coordinate system.
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