Here’s the latest AR dish from Ohan Oda and Steve Feiner at Computer Graphics and User Interfaces Lab: an marble game that uses gravity as a . No required.‘s
See the video and recipe after the jump.
The player wears a video-see-through head-worn display, and tilts and translates a tracked board to guide a virtual “marble” (actually, more like a little rubber ball) through a dynamic maze of obstacles. Gravity in the game always points in the correct direction, no matter how the player’s head and board are oriented relative to each other. This is possible because the game uses both optical marker tracking and a separate head-tracker built into the head-worn display. The optical marker tracker relies on a camera on the head-worn display to determine the board’s relative position and orientation. The built-in head tracker determines which way is “down,” which the game uses, in turn, to compute the true “down” direction for the board.
The ingredients include:
- Goblin XNA, an infrastructure for AR apps, that Ohan Oda has built on Microsoft XNA Game Studio 3.0 and can be downloaded.
- Newton Game Dynamics. Engine –
- ALVAR Optical tracking engine by VTT Research Center in
- Vuzix iWear VR920 head-worn display and CamAR camera
- A Paper board (can’t be downloaded – you need to leave home and go to a paper store)
Can you guess the secret sauce for this lovely AR dish?
Go ahead – try this at home!