| 摘要 |
PROBLEM TO BE SOLVED: To prevent a contact point between lines from being impacted twice when a continuous line is drawn.SOLUTION: A DER processing part 50 generates drawing information on a first line according to a drawing rule, and generates first drawing information for continuous drawing including an end point of the first line as a start point of a next second line. An end point drawing determination part 60 determines whether a pixel including the end point of the first line is drawn. When the pixel including the end point of the first line is drawn, a start point correction determination part 62 determines a drawing direction of the second line and determines whether start point coordinates of the second line need to be corrected. When the start point coordinates of the second line need to be corrected, a coordinate correction processing part 64 corrects start point coordinates of the second line into within a pixel adjoining the pixel including the start point. When a length of the second line in a main axial direction is as long as or longer than one pixel, a line disappearance determination part 66 outputs the corrected start point coordinates of the second line as second drawing information, but when the length is not longer than one pixel, on the other hand, the second line is not drawn. |
