近似弧长参数化曲线在CAD和几何造型系统中有着重要的应用。
Nearly Arc Length parameterization curve palyes an important role in CAD and geometric modeling.
本文提出了一种球面上基本几何元素的园弧投影变换方法，并建立了三轴及对应的二轴园弧投影体系。
This paper presents a method of arc projective transformation of the fundamental geometric elements on a sphere, and sets up an are projective system for three axial and two axial correspondently.
而细分作为一个优秀的几何造型工具，在弧长约束方面的研究也未多涉及。
However, subdivision as an excellent tool was not used in fields of geometric restriction.
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