| 摘要 |
PURPOSE:To facilitate data transformation from data defined by a straight line and a cubic Bezier curve to data defined by a straight line and a quadratic B spline curve by a simple method relieving the burden of a CPU and to improve the efficiency for preparing an outline font. CONSTITUTION:Transform processing is composed of curve transforming processing (S41) transforming a cubic curve to a quadratic curve with three points, curve transforming processing (S43) transforming a cubic curve to a quadratic curve with four points, decision processing of the degree of approximation (S42, S44) deciding the degree of approximation of the transformed quadratic curve and division processing (S45) for dividing a cubic curve and the division processing and the curve transforming processing are repeatedly executed until these are judged to be all right by the decision processing for the degree of approximation. |
