| 摘要 |
<p>A contour profile (A) is displayed on a screen (CRT), together with one or more figure elements (Sn, St, Ck) for specifying a profile that is to be added to the contour profile (A). A predetermined figure element (arc C1') on a contour profile (A) is designated, and the figure elements (Sn, St, Ck) constituting the additional shape are successively designated in the direction of definition of the contour profile (A). The additional profile is combined with the designated figure element (arc C1') of the contour profile (A) to form a new contour profile, which is then drawn on the display screen (CRT).</p> |
