| 摘要 |
PROBLEM TO BE SOLVED: To easily and secure perform a drawing process for a maximum graphic larger than a drawing area. SOLUTION: A maximum graphic judging means 15 judges input figure information from an external input device 11 according to maximum graphic condition information stored in a maximum graphic condition storage means 14. In case of a maximum graphic, a graphic judging means 17 judges which of a line, a polygon, and a circle the input graphic information represents according to graphic condition information in a graphic condition storage means 16. A clipping means 18 sends out an input graphic information part inside intersection coordinates touching the outline of a drawing area to a graphic drawing means 20 when the maximum graphic information represents a line or polygon to perform a process for drawing in the drawing area. When the maximum graphic information represents a circle, a straight line approximating means 19 outputs figure information on straight line approximation connecting parts where the outline of the drawing area where the drawing area is performed and the arc of the circle touch each other to the graphic drawing means 20 to perform a process for drawing in the drawing area. |
