Programmatic Pan and Zoom with initial pan and zoom
Displays an image at the top of the viewport, half off the screen, and has pan/zoom buttons.
Set Pan (+5,0)
Set zoom * 1.05
Reset Zoom
Reset Original
Set current offset/size as pan 0,0/zoom 1
Set LEFT Display Area
Set RIGHT Display Area
Set TOP Display Area
Set BOTTOM Display Area
Set Random Display Area