| 摘要 |
PROBLEM TO BE SOLVED: To obtain a deforming method and curve and a curved surface which are improved in operatability, enabling continuous deforming operation irrelevantly to a menu screen by deforming the curve, using plural indication points by specifying a 1st indication point. SOLUTION: On the screen, tertiary Bezier curves R1 and R2 are generated by plotting control points. When an end point P1 is specified as the 1st indication point S1, an indication point mark is displayed across the 1st indication point S1. When the 1st indication point S1 is moved as shown by an arrow (a), the curves after the operation are R1' and R2'. Namely, while the continuity of both segments R1 and R2 is maintained, new segments R1' and R2' are generated with new internal control points generated when the end point P1 is moved by (a). The trouble that a return to a menu screen is made each time a deforming operation mode is different is eliminated. |
