A Heuristic Offsetting Scheme for Catmull-Clark Subdivision Surfaces.
Saved in:
| Title: | A Heuristic Offsetting Scheme for Catmull-Clark Subdivision Surfaces. |
|---|---|
| Authors: | Wang, Jianzhong1, Cheng, Fuhua1,2 cheng@cs.uky.edu |
| Source: | Computer-Aided Design & Applications. Dec2015, Vol. 12 Issue 6, p765-771. 7p. |
| Subjects: | Heuristic algorithms, Scheme programming language, Subdivision surfaces (Geometry), Rapid prototyping, Geometric surfaces |
| Abstract: | In rapid prototyping, a hollowed prototype is preferred and significantly reduces the building time and material consumption in contrast to a solid model. Most rapid prototyping obtains solid thin shell by gradually adding or solidifying materials layer by layer. This is a non-trivial problem to offset a solid which involves finding all self-intersections and filling gaps after raw offsetting. While Catmull-Clark subdivision (CCS) surfaces are widely used in solid modeling, the hollow solid/thin shell problems are not well addressed yet. In this paper, we explore earlier methods of obtaining thin shell CCS solid and present a new thin solid approach. With this new scheme, one can efficiently avoid creases and handle gaps. The new scheme is heuristic, but inner surface is parametric, so computation of the inner surface is simplified. And with offsetting Bezier crust applied, the inner surface maintains the mesh structure and continuity of the outer surface. The obtained thin shell solid iscontinuous everywhere, except at extraordinary points, where it iscontinuous. [ABSTRACT FROM AUTHOR] |
| Copyright of Computer-Aided Design & Applications is the property of Computer-Aided Design & Applications and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
