Following my earlier post, I've had a chance to do some investigation.

Firstly, of course it's completely possible to change the "Source" property of the MultiScaleImage control at runtime.  This results in the Deep Zoom composition changing and doing that animation that it does when it loads.

Secondly, when you compose your Deep Zoom image with the Composer and check "Create Collection" the SubImages collection of your MultiScaleImage gets populated with the images in your composition complete with their location Points.

You can then change the ViewportOrigin (which is a Point) on any of the MultiScaleSubImages and the change will be reflected in your browser.  Pretty neat considering this morning I thought Deep Zoom was just for static images.

The obvious next step for this is that this lovely dependency property can be animated like any other to create your incredible layout effects.  The only problem I have at the moment is that these MultiScaleSubImages are obviously created at runtime and do not have a Name property to give to a DoubleAnimation.

If there's anyone reading this who knows how to point an animation at an unnamed object then please let me know.

Dave