| 摘要 |
PURPOSE:To draw a line segment and a rectangular frame at high speed by using a CPU positively, and combining the CPU with the picture drawing of a graphic display control device. CONSTITUTION:A graphic drawing means 15 provided with both a line segment drawing means 16 to draw the line segment connecting a starting point and a terminal point by designating the starting point, the terminal point and the kind of line pattern and a rectangular frame drawing means 17 to draw a rectangle consisting of only an edge without a shaded inside by designating the coordinates of two points positioned diagonally and the kind of line pattern is stored in a storage device capable of being read in by the CPU 11. The CPU 11 writes graphic data in a display storage device 12 directly or indirectly by controlling the graphic display control device 14. Thus, in a case a graphic with many line segments in a horizontal direction or a vertical direction or the graphic with many rectangular frames is drawn, it can be drawn at speed higher than the case all of them are drawn by the graphic display control device. |
