How to properly change hitboxes "on the fly"?

[LifeDrainingCoding]

I'm struggling to change hitboxes after collision events. So here's the example:

public void updateBody() {
        ((Circle) view.getChildren().getLast()).setRadius(radius.get());
        bbox.clearHitBoxes();
        hitBox =  new HitBox(new Point2D(-radius.get(), -radius.get()),BoundingShape.circle(radius.get()));
        bbox.addHitBox(hitBox);
    }

so view is link of ViewComponent obtained by Entity.getViewComponent() and bbox is link of BoundingBoxComponent obtained by Entity.getBoundingBoxComponent().

So, after changing hitboxes in bounding box component like in example it doesn't changes at all. Even if bboxes is highlighted by debug menu this lines are doesnt match actual bbox. As you can see in screenshot below blue lines is border bounding boxes they clipping through other bounding while shouldn't and these circles aren't stuck and can freely move by just applying some forces. So these circles doesn't changed their bounding boxes after their spawn in the world(While should, but only visually changed). So it can be proved that i saw collisions while it shouldn't be.

The full app code here

[AlmasB]

Hi, this looks like a bug. I've skimmed through fixture creation and I can only see it updating on scale change, but not on hit box change. I'll open an issue.

In the meantime, a possible workaround for your use case is to change the scale (with an appropriate scale origin) of your entities.

[LifeDrainingCoding]

Should i use scaling via transform or what?

[AlmasB]

Yes, can be done via transform, or a shortcut: entity.setScaleX(..)

[LifeDrainingCoding]

Thanks , that workaround worked well. I just calculate scale factor by dividing next bbox shape area by previous