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《Geodesic-Controlled Developable Surfaces for Modeling Paper Bending》.pdf
EUROGRAPHICS 2007 / D. Cohen-Or and P. Slavík Volume 26 (2007), Number 3
(Guest Editors)
Geodesic-Controlled Developable Surfaces for Modeling
Paper Bending
Pengbo Bo and Wenping Wang
The University of Hong Kong
Abstract
We present a novel and effective method for modeling a developable surface to simulate paper bending in interac-
tive and animation applications. The method exploits the representation of a developable surface as the envelope
of rectifying planes of a curve in 3D, which is therefore necessarily a geodesic on the surface. We manipulate the
geodesic to provide intuitive shape control for modeling paper bending. Our method ensures a natural continu-
ous isometric deformation from a piece of bent paper to its flat state without any stretching. Test examples show
that the new scheme is fast, accurate, and easy to use, thus providing an effective approach to interactive paper
bending. We also show how to handle non-convex piecewise smooth developable surfaces.
Categories and Subject Descriptors (according to ACM CCS): I.3.5 [Computer Graphics]: Computational Geometry
and Object Modeling I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism
1. Introduction state, i.e., stretching or shrinking of the paper size is not
allowed.
Paper is commonly used material. Therefore its shape mod-
eling and animation is of great interest to computer graph- The last requirement means that there is an isometric map-
ics. We are interested in inte
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