SIMD for Collision

Software Development, Programming Languages(box2d.org)view on HackerNews

SIMDcollision detectionBox3Dphysics engineC++

Author: birdculture

Date: 7/22/2026

Article Summary:

The author discusses the benefits of using SIMD (Single Instruction, Multiple Data) for collision detection in the Box3D physics engine, specifically for complex hulls with many edges, where the edge-edge test can dominate the simulation.