this is my first aproach to the idea of a 3d navigator for the destop ( the real one, the wooden ).
you have to move a pen over a projected horizontal section of an architectual plan. if the pen will rest over one of the rooms a 3d view of this room shows up. you can turn around by moving the pen within the room.

you need :
webcam, colortracker, beamer, flash, vvvv

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