| 摘要 |
PURPOSE:To paint-out a closed polygonal picture in a single color and with a single main scan and a single secondary scan, by referring to the contents of the start and stop point memory means as well as an output memory means and using an arithmetic means to decide the contents of the output memory means for spot groups to be painted out. CONSTITUTION:A polygonal memory means 400 stores a closed polygonal picture to be painted out. A side sorting means 410 sorts the sides of a polygonal picture shown by the contents of the means 400 into the start, stop and other sides respectively. The start and stop candidate points for paint-out are produced from the sides sorted by the means 410 by a start point generating means 420 and a stop point generating means 440 respectively. These candidate points are stored to a start point memory means 430 and a stop point memory means 450 respectively. The outputs of both means 430 and 450 are applied to the means 420, and the output of the means 420 is applied to an output memory means 470. The means 420 refers to the contents of means 430, 450 and 470 respectively to decide the contents of the means 470. Thus a closed polygonal picture is painted out with a single main scan and a single secondary scan respectively. |
