| 摘要 |
PROBLEM TO BE SOLVED: To divide a polygon so that a distance between the apex of the polygon and the end point of a polyline becoming a boundary becomes precise. SOLUTION: The apexes of a polygon 11, which are the objects of division, are set to be signs A and B. The reference circle 12 of a radius r1, in which the apex A of the polygon 11 is set to be a reference point, is generated by using a reference point plotting function for dividing the polygon 11. A polygon division function is used and the polygon 11 is divided into tow with a polyline 13 connecting an intersection (a) between a side 11a and the reference circle 12 and the apex B of the polygon 11 as a boundary. Then, a reference point deletion function is used, the reference point and the reference circle 12 are deleted and the polygons divided into two are obtained. |
