| 摘要 |
The present invention relates to a straight line drawing method, a straight line drawing program and a straight line drawing apparatus, an object of the invention is to provide a straight line drawing apparatus, a straight line drawing method and a straight line drawing program, which can reduce fabrication costs and can improve processing performance. A midpoint between endpoints of a straight line is determined, when drawing the straight line, having the two end points located outside a drawing frame defined by frame defining lines wherein at least one of the two end points is located on the drawing frame side to all the frame defining lines. When the midpoint is located outside the drawing frame and at least one of the end point and the midpoint is located on the drawing frame side to any of the frame defining lines, the portion between the other end point and the midpoint is removed from the drawing target, and the end point and the midpoint are established as new two end points of a new drawing target straight line.
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