| 摘要 |
PURPOSE:To easily draw a delimiter line in the middle between stages by designating two points out of four corners between stages. CONSTITUTION:When an icon on a display device 2a is used to designate a longitudinal direction or a transverse direction in which a ruled line is drawn and the coordinates of two points are designated by a mouse 2d, the length of the major side and that of the minor side of a rectangle having these points as two points on a diagonal line are calculated, and the coordinates of middle points of major and minor sides are calculated, and the rules line is so drawn that it passes through middle points of the major sides or minor sides in accordance with the designated direction. |
