Dynamic point-region quadtrees for particle simulations

Date
2013
Advisor
Instructor
Source Title
Information Sciences
Print ISSN
0020-0255
Electronic ISSN
Publisher
Elsevier Inc.
Volume
218
Issue
Pages
133 - 145
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

We propose an algorithm for dynamically updating point-region (PR) quadtrees. Our algorithm is optimized for simultaneous update of data points comprising a quadtree. The intended application area focuses on simulating continuum phenomena, such as crowds, fluids, and smoke. We minimize the number of tree updates by making use of small changes in the positions of data points. We compare the efficiency of the proposed algorithm with two other approaches for updating a quadtree. One of these techniques creates the tree from scratch at each time-step. The second technique subsequently deletes a data point from the tree and reinserts it in its updated position. We achieve significant performance gains with our method in both cases. © 2012 Elsevier Inc. All rights reserved.

Course
Other identifiers
Book Title
Keywords
Continuum dynamics, Crowd simulation, Octree, Particle simulations, Point - region quadtree, Quadtree, Continuum dynamics, Crowd Simulation, Octree, Forestry, Trees (mathematics), Algorithms, Forestry, Simulation
Citation
Published Version (Please cite this version)