sampleSpringChain

function sampleSpringChain(links: readonly SpringLink[], rootAt: SpringAnchor, timeSec: number, out: Float32Array): void

import { sampleSpringChain } from '@driftengine/animation';

Parameters

In depth

The whole chain is marched on one grid rather than each link on its own, and that is not an optimisation. Link n's anchor is link n-1's sprung position, so sampling a link independently would need its parent at every substep, which would need the grandparent at every substep of every one of those: a depth-d chain would cost steps^d anchor calls. Marched together it is steps × d, and it is the same answer.