Control visibility of an element in SVG shape in perspective

In the mean time till these features are available in perspective, you can try using SVG in your own HTML page and develop your own custom animation such as rotation , visibility, position, angle and graphics if you are good at HTML/SVG/JS or know of any open source freeware library that can do it. My New module - RWS - Restful Web Services , from PRAMANJ Technologies allows you to bind dynamic ignition tag values with such graphics in an HTML page containing canvas and SVG elements. Just a thought.