Texture transformation corresponding to quad scaling?

one more thing:

I’d like to create the following CCS3 function in vvvv with quads and textures (resize the browser window to see what i mean):
http://demo.tutorialzine.com/2012/06/quick-tip-fullscreen-backgrounds/

Before I start to get my head around this: Maybe someone has already implemented it in vvvv an is willing to share the knowledge?
Ideas on how to realize this are welcome too, of course!

cheers!

this has to do with uv mapping coordinates

quadtexturescale.v4p (9.2 kB)

thanks!
That was pretty fast.