Editor: Use pointer events for ViewHelper.

[Mugen87]

Related issue: Fixed #22470

Description

The view helper now uses pointer events.

[mrdoob]

Thanks!

[mrdoob]

By the way, we should probably add a pointercancel listener next to every pointerup.
pointercancel dispatches every time the OS gets ahold of the pointer (like when doing edge gestures on mobile oses).

[Mugen87]

So you mean this pattern?

function onPointerUp () {

    // some code

}

domElement.addEventListener( 'pointerup', onPointerUp ) ;
domElement.addEventListener( 'pointercancel ', onPointerUp ) ;

[mrdoob]

Yep!

[mrdoob]

/cc @fernandojsg

[Mugen87]

Um, is it possible that pointerup and pointercancel are fired in the same situation? Or can one safely state that after a pointercancel no pointerup occurs?

[mrdoob]

I think pointerup event shouldn't dispatch after pointercancel... 🤔
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/pointercancel_event