The Warp tool pushes pixels in a given direction.
Direction
Pixels can be pushed in any of 8 directions. The dropdown menu below the toolbox allows you to
select this.
Opacity
Specifying a lower opacity value will allow the pushed pixels to blend with the surrounding image,
creating a smooth but more blurry effect. Specifying a higher opacity will reduce blurring but
will introduce jagged edges.
See also: