PointerDragBehavior to work only on one specific mouse button

Questions
1

Hello everyone…
Is it possible to make PointerDragBehavior to work only on left-click? I saw this topic Only left click on PointerDragBehavior but It doesn’t helps.

2

Pinging @Cedric

3

I have no idea but I can check :slight_smile:

4

Depending on your use case, you can filter the pointerId in onPointerDown and call pointerDragBehavior.startDrag() with pointerDragBehavior.startAndReleaseDragOnPointerEvents = false
But you will have to handle the mesh picking for the filter.

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5

I made it with scene.onPointerObservable cus in onPointerDown (please correct me if I’m wrong) the pointerId is 1 for every mouse button, so I can’t distinguish which mouse button was clicked in there.

so when I use onPointerObservable I can move the sphere only by left click but there’s a bug with arcRotateCamera now. When you move the sphere you can’t later move the camera.

https://playground.babylonjs.com/#QCGY56#6

6

When you move the sphere you can’t later move the camera.

This has been fixed yesterday and will be in next nightly

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7

Ping @PolygonalSun for the pointerId issue

8

The pointerId is the identifier for the mouse itself so if you want to identify what button has been pressed, you’ll need to access the button property. Here’s an example:

scene.onPointerDown = ((pointerEvent, e) => {
        console.log("pointerButton : ", pointerEvent.button)
    })

Left click should come up as a 0. Here’s a reference if you want to know how all the other mouse buttons are mapped.

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