Projection mapping with Flex?

Dear Touch designer forum,
I want to projection map this onto a sphere. I have watched the mapping vids and that side of things I think I will be OK. However, I made this in flex .- how do I get the flex sphere to split into, say, four separate surfaces of a sphere for each projector (like the surfaces of four quarters of an orange) ? At the moment it’s just looking at a sphere from one angle as you can see from the video in my first post?

thanks! Gus