A class of quasi-cubic trigonometric parametric curves based on {1,sin,cos,sin2 } is presented,which are called QCT-curves,including QCT-Ferguson curve,QCT-Bézier curve and uniform QCT-B spline curve.
给出了一组基于函数空间{1,sin,cos,sin2}的类三次三角参数曲线,称之为QCT-曲线,主要包括QCT-Ferguson曲线、QCT-Bézier曲线及均匀QCT-B样条曲线。