| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device that can draw an accurate thin curved line with nearly as simple constitution as a constituting method for drawing a thin straight line. SOLUTION: A reference line scanning means 3 scans a reference line based upon the shape of a curved line to be drawn. At each scanning point, a direction calculating means 4 calculates a direction crossing the travel direction of the reference line, a normal vector generating means 5 generates a normal vector which crosses the travel direction of the reference line at right angles and has a length equal to the line width of the curved line to be drawn, and a drawing means 6 draws a thick curved lines having the line width as a set of normal vectors in a page buffer 7. |
