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arXiv · 1203.0442

Homeomorphic approximation of the intersection curve of two rational surfaces

Liyong shen·Jin-san Cheng·Xiaohong Jia
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Abstract

We present an approach of computing the intersection curve $\mathcal{C}$ of two rational parametric surface $§_1(u,s)$ and $§_2(v,t)$, one being projectable and hence can easily be implicitized. Plugging the parametric surface to the implicit surface yields a plane algebraic curve $G(v,t)=0$. By analyzing the topology graph $\G$ of $G(v,t)=0$ and the singular points on the intersection curve $\mathcal{C}$ we associate a space topology graph to $\mathcal{C}$, which is homeomorphic to $\mathcal{C}$ and therefore leads us to an approximation for $\mathcal{C}$ in a given precision.

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Liyong shen, Jin-san Cheng, Xiaohong Jia. 2012-03-02. Homeomorphic approximation of the intersection curve of two rational surfaces. https://arxiv.org/abs/1203.0442

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