I-COLLIDE is an interactive and exact collision detection library for large environments composed of convex polyhedra. Many non-convex polyhedra may be decomposed into a set of convex polyhedra, which may then be used with this library. I-COLLIDE exploits coherence (the property of a simulation to change very little between consecutive time steps) and the properties of convexity to achieve very fast collision detection which is exact to the accuracy of the input models. We've tested the library in both an architectural walkthrough and multi-body simulations , impulse-based simulations and the time required for collision detection is typically small compared to the time to generate the graphics for these simulations.

For a description of the algorithms used in I-COLLIDE, see:

Papers and Technical Reports

For a demonstration of real-time collision detection MPEGS, see:

MPEG Demonstration of Real-time Collision Detection

If your input consists of non-convex or polygon soup models, you should check out the RAPID or V-COLLIDE collision detection systems, also developed at UNC. Differences between these systems are available.

The SWIFT package provides the same functionality as I-COLLIDE and more. It is also faster and much more robust and should be used instead.

I-COLLIDE Developers

Geometric Algorithms for Modeling, Motion, and Animation

Copyright © 1995-1996 Dinesh Manocha