SWIFT++ Publications and Video Demonstrations
Abstract: The need to perform fast and accurate proximity queries arises frequently in physically-based modeling, simulation, animation, real-time interaction within a virtual environment, and game dynamics. The set of proximity queries include intersection detection, tolerance verification, exact and approximate minimum distance computation, and (disjoint) contact determination. Specialized data structures and algorithms have often been designed to perform each type of query separately. We present a unified approach to perform any of these queries seamlessly for general, rigid polyhedral objects with boundary representations which are orientable 2-manifolds. The proposed method involves a hierarchical data structure built upon a surface decomposition of the models. Furthermore, the incremental query algorithm takes advantage of coherence between successive frames. It has been applied to complex benchmarks and compares very favorably with earlier algorithms and systems.
Notice: Copyrights to the following papers are held by the publishers.
Copies made available here are preprints. Please treat these materials
in a way consistent with the "fair use" provisions of appropriate copyright
Stephen A. Ehmann and Ming C. Lin
Accurate and Fast Proximity Queries between Polyhedra Using Surface Decomposition .pdf (1.0 MB)
To appear in Computer Graphics Forum (Proc. of Eurographics), 2001.
|UNC Collide Research Group|
|GAMMA: UNC Research Group On Geometric Algorithms for Modeling and Motion Applications|
| DOE ASCI Award
Army Research Office
National Science Foundation
For more information, contact email@example.com
Copyright 2001. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the author.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.