OrbitControls on damping end

Questions
1

Hey, is it possible to get notified as soon as OrbitControls has finished moving with damping enabled?

The end event does not take damping in account. It gets fired on pointerup.

https://jsfiddle.net/cLq6t4s7/6/

I, for sure, could check if mouse is up and the camera is moving in a certain frequency or sth like that, but that is too fragile. Or try to hack on the OrbitControls.js directly.

2

Judging by this - there’s probably no easy way to do it - most of the values and offsets are private, and there are no events fired just on movement.

What you mentioned at the end of your post may be actually a good way to achieve it though - when you receive end event from OrbitControls, just create a debounced event that’s not fired for as long as the camera is changing its position.

2 Likes
3

I think the change event fires every frame during the automatic move with damping, and stops when it’s still.

Edit : well that’s pretty much what @mjurczyk suggested above

3 Likes
5

I’d be very interested in this if it had mobile support, and most importantly, supported rotating and object as opposed to the current orbitControls which only supports a rotating camera. Having that as an option will make it a pretty solid contender upsers

6

Not sure what you mean, but to dampen object rotation (unrelated to orbit controls, which can affect only camera) you can use either a tween / animation library, or a simply a bit of math:

const targetRotation = object.rotation.y + Math.PI;

animate = () => {
  object.rotation.y = Three.MathUtils.lerp(object.rotation.y, targetRotation, 0.1);

  if (object.rotation.y - targetRotation < 0.1) {
    // Do something when rotation is nearing it's target
  }
};
7

the solution i found is to constantly take the azimuthal and polar angles values and check if they have changed