| 摘要 |
PURPOSE:To shorten the process of painting a closed area, by performing line search along only a circumference in the closed area. CONSTITUTION:Lattice dots in the closed area encircled by a sequence of outer circumferential dots different from dots in set color CA on X-Y lattice point coordinates are painted in the specified color CA. Dots under one point A in the closed area are checked successively in such a manner that while a following dot in the color different from CA is regarded as a starting point P1, eight adjacent points of a present point Pi on the outer circumference are checked anticlockwise starting at an outer circumferential dot Pi-1 right before the point Pi clockwise along the outer circumference around the point A. Then, the 1st dot in the different color except dots painted newly is detected and regarded as a following outer circumferential dot Pi+1 and when a decision point dot Pi contacting the Pi at the upper side is detected before said point Pi+1 is detected, dots between the decision point P'i and a following dot in the different color in the anticlockwise direction are repainted in the color CA; and then an advance to the point Pi+1 is made and said operation is repeated until Pi-1 and Pi coincide with P2 and P1. |
