PAN_VP translates a specified viewport.
---->(PAN_VP)--|viewport|--+-(:SCREEN_X)->-+--|factor|---->
| |
+-(:SCREEN_Y)->-+
The following options are available to translate
your viewport.
- :SCREEN_X - movement takes place along the x
(horizontal), axis.
- :SCREEN_Y - movement takes place along the y
(vertical), axis.
Use this action to translate the specified viewport in
the x or y direction. Entering a positive value moves
the viewport contents to the right or up.
The following parameter sequences pan viewport "vport1" so that
the point currently in the center of the viewport, will be
in the upper left-hand corner.
PAN_VP "vport1" :SCREEN_X -0.5
PAN_VP "vport1" :SCREEN_Y 0.5
CENTER_VP interrupt action
DYNAMIC_VP interrupt action
SELECT_VP_SA subaction