摘要
根据移动一个控制顶点而固定其他控制顶点的方法,分析一种类四次三角样条曲线的形状。在一类控制多边形下,利用控制顶点之间距离的关系,分别得到了对应的四次三角样条曲线含有尖点、二重点以及拐点的判别条件。
By varying a control point and fixing the rest, the shapes of a class of quasi quartic trigonometric spline curve lying to a kind of control polygons are studied. The discriminate conditions of cups, loops and inflection points are obtained according to the distance of the control points respectively.
出处
《计算机工程与应用》
CSCD
2013年第10期195-200,共6页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(No.61165011)
关键词
三角样条曲线
奇点
拐点
trigonometric spline curves
singularity point
inflection point
