| 摘要 |
PURPOSE:To increase the processing speed and flexibly alter a method of anti- ailiasing processing. CONSTITUTION:A CPU 202 performs the subpixel painting-out processing and approximate area rate calculation processing of the anti-ailiasing processing according to a control program stored in a ROM 205 and a straight-line drawing device 206 inputs an approximate area rate, the density value of a figure to be drawn, a y coordinate value to be drawn, the start x-coordinate value of a straight line to be drawn, the end x-coordinate value of the straight line to be drawn, and the background density value of the figure to be drawn as parameters to draw the straight line in the x-axial direction of a specified line on a page memory 207. |
