| 摘要 |
PURPOSE:To effectively suppress the overshoot of a Bezier curve when the distance between input coordinate points is long and the distance between the other adjacent input coordinate points is extremely short when the Bezier curve is generated between the input coordinate points. CONSTITUTION:A length calculation part 6-2A calculates respective lengths up to input coordinate points which is located back and forth each input coordinate point from each input coordinate point within a coordinate column buffer 6-1. A length comparison part 6-2B compares the calculated lengths. As a result, if the rear and front lengths are different from each other by an amt. more than a prescribed rate, a coordinate calculation part 6-2C moves a control point to the location near the corresponding input coordinate point according to the length of a shorter side. Based on the control point obtained by this, a Bezier plotting part 7 plots a continuous curve by connecting each input coordinate point with a cubic Bezier curve. |
