Copyright © 2004 Elsevier B.V. All rights reserved.
Kinetic collision detection with fast flight plan changes
Received 9 February 2004;
revised 7 September 2004.
Communicated by S.E. Hambrusch.
Available online 13 October 2004.
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Abstract
We show how to augment a kinetic data structure for collision detection between translating polygons with the ability to make fast flight plan changes. This allows us to update the KDS after a moving polygon changes its motion in O(logn) time, instead of the Ω(n) worst-case time needed by previous kinetic data structures. The key to our approach is replacing the KDS priority queue by a dynamic convex hull that represents the certificates of the KDS.
Keywords: Kinetic data structure; Collision detection; Dynamic convex hull; Computational geometry







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