setCollisionGroups help

[Lightnet]

I am total lost how the collision filter works.

https://rapier.rs/docs/user_guides/javascript/colliders

Is there JavaScript easy call to convert to bit value?

function collisionGroup(id , groups=[]){
//...
return //bit value
}

let collisionid = collisionGroup(0 , [0, 2, 3]);

one reason is learning how to deal with the vehicle collisions.

There is tool for this site while learning it.

https://sbcode.net/threejs/physics-rapier-impulsejoint-motors/