pmndrs/use-cannon

Can't pass instanced bodies to useConstraint

Aperta

#50 aperta il 28 mar 2020

 (0 commenti) (1 reazione) (0 assegnatari)TypeScript (164 fork)github user discovery
enhancementhelp wanted

Metriche repository

Star
 (2950 stelle)
Metriche merge PR
 (Nessuna PR mergiata in 30 g)

Descrizione

Creating constraints between instanced meshes isn't possible at the moment.

From #48 @drcmda

we could maybe learn from react-springs playbook here, esp useSprings: https://www.react-spring.io/docs/hooks/use-springs

const [refs, api] = useDistanceConstraints(10000, () => ({ ... }))
return data.map((id, index) => <mesh key={id} ref={refs[index]} ... />

I think this would be a good pattern for constraints on instanced bodies. An iterator function that returns an array of two indexes could attach a standard mesh to instanced meshes or instanced mesh to instanced mesh.

const [bodyA] = useBox({...})
const [bodyB] = useSphere({...}) // ref for instancedMesh

useDistanceConstraints(count, bodyA, bodyB, fn: (i) => [0, i], options, deps]) // where fn returns [bodyAIndex, bodyBIndex]

Guida contributor