| 摘要 |
PURPOSE:To accurately plot a circle when two points are adjacent at the time of plotting the circle by supplying three points. CONSTITUTION:A circle plotting controller 6 controls so as to find the intersection and the radius of the circle required for plotting the circle and controls an inter-two-point distance calculating device 7, a two-straight-line intersection calculating device 8 for calculating the intersection of perpendicular bisector connecting two pairs of two points within three points and an adjacent two- straight-line intersection calculating device 9 for calculating the intersection of perpendicular bisector connecting the two pairs of two points when the two points are adjacent. The intersection obtained in such a manner is defined as the center of the circle and the circle with the distance between the intersection and one point of the three points as the radius is plotted by a circle plotting device 10. |
