Infinite plane shape for 3D collisions. An infinite plane shape for 3D collisions. Note that the [Plane]'s normal matters; anything "below" the plane will collide with it. If the [WorldMarginShape] is used in a [PhysicsBody], it will cause colliding objects placed "below" it to teleport "above" the plane. The [Plane] used by the [WorldMarginShape] for collision.