Generating Vanishing Features with Subdivision Surface Skinning
Generating Vanishing Features with Subdivision Surface Skinning
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DOI：
10.2493/jspe.70.721
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
Joe Kuragano;Tomoyuki Fujimori;Hiromasa Suzuki
中科院分区：
文献类型：
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作者：
Joe Kuragano;Tomoyuki Fujimori;Hiromasa Suzuki
在计算机辅助工业设计（CAID）中，参数曲面被广泛应用。表面通常通过蒙皮方法生成，因为生成的表面易于操作。典型的蒙皮方法生成具有两条截面曲线和一条驱动曲线的曲面。在本文中，我们首先提出了一种将这种蒙皮方法应用于Catmull-Clark细分曲面的算法。提出了一种基于统一细分方案的C2曲面插值方法。此外，还引入了一种新的蒙皮效果，称为“消失特征”。消失特征是指从一条截面曲线到另一条截面曲线逐渐消失，最终在曲面上某一点消失的特征。根据控制网格与消失特征的交点，提出了一种将消失特征嵌入蒙皮细分曲面的方法。这两种方法作为一个原型系统进行了实现，并给出了一些实例。
In CAID (Computer Aided Industrial Design) parametric surfaces are widely used. A surface is often generated by a skinning method because the generated surfaces are easy to manipulate. A typical skinning method generates a surface with two section curves and a driving curve. In this paper we first propose an algorithm to apply such a skinning method to a Catmull-Clark subdivision surface. A new method, which generates a C2 surface interpolating the given section curves, is devised based on a unified subdivision scheme. Furthermore, a new skinning effect called “a vanishing feature” is introduced. The vanishing feature is a feature which gradually disappears from one of the section curve to the other, and finally vanishes at some point on the surface. A method to embed a vanishing feature to a skinned subdivision surface is developed by reconfiguring the control mesh according to the intersection points between the control mesh and the vanishing feature. Those two methods are implemented as a prototype system and some examples are demonstrated.