This article is for an older version of Lumo Play. For the most recent version, see this article
Mask the game area
- This step allows you to draw an exact rectangle around the projection or display on a floor or wall, so that only the area of the projection is tracked. If you are setting your sensor or camera up so that it points away from a wall, or so it tracks the widest range of motion available, you can leave the tracking area as it is.
- You will see colored blocks appear on your chosen display when movement occurs. If the colored blocks are appearing across the screen from the movement, you can use the Flip Vertically and Flip Horizontally settings to properly align the movement with your sensor input, so the game reacts to movement properly. These settings allow you to place your sensor above, in front of, or behind the players.
Masking for floor projection:
Place an object (like a box, a chair or an actual person) at each corner of the display area so you can see where the projection area is in the sensor feed window.
In the sensor window (which is a black box for 3D sensors, and a camera view for USB cameras) grab the corner pins and position them over the objects that you placed in each corner of the display.
Masking for wall projection:
If you are projecting on a wall and using a depth sensor like the Kinect to define a specific tracking area and depth in order to create games that react to movement directly in front of the wall (like the Wall Defenders game, where players interact by throwing balls at the wall rather than moving), you should mask your display area the same way you'd mask a floor, and use the depth settings in the next step (Calibration) to ensure that you are only tracking movement directly in front of the wall.
If you are simply tracking motion in front of a wall or screen, you don't need to mask your display (since you won't need to have the same level of precision as you would in a floor projection). Simply ensure that the Flip Vertical and Flip Horizontal settings are correct so that if you move in the bottom right of the sensing area, you see colored blocks in the bottom right of your display.