The monotone curvature variation (MCV) pieces are widely used in practice to control the global shape of curves,and play an important role in curve smoothing.

• 曲率单调变化(MCV)曲线段是造型人员对曲线进行整体形状控制的一个重要形状单元,也是计算机辅助几何设计领域构造光顺算法的一个重要概念。