Box2D
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Latest posts
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Box2D 3.2
Version 3.1 was released about 16 months ago. I’ve been busy with Box3D and work, but I’ve managed to add a lot of cool stuff to Box2D. Also it has been heavily optimized and tested. Here I’ll cover the most interesting bits. The full details of changes are in the release notes.…
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Contact Recycling
Contact recycling is a technique I developed for Box2D and Box3D. Contact recycling can drastically improve rigid body simulation performance, making the process of computing contact points almost free. Further, recycling can significantly improve stability. Contact recycling…
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Inscribed Spheres
The separating axis test (SAT) works well for computing contact manifolds. Unlike GJK, it is robust when shapes are very close together and it works when shapes are overlapped. Box3D uses SAT for computing the contact manifolds between convex hulls (polytopes). I like using SAT…