We built up sections of the projection surface through out the event and changed the mask accordingly.
Each section corresponded to what was happening on stage.
When the surface was complete we projected a video clip over it of a collage of photos taken of the people attending the event which zoomed out to display a picture.
All masks and some of the content were set up before the rig from a CAD drawing of the surface.
See link to more event pictures
http://lighting.imagezilla.co.uk/index. ... xN2UyODc2Y
Tim
Before the surface...
After 3 sections...
A few more sections...
All sections...