Polygon Playgound is a ‘dynamic lounge object,’ incorporating 3D projection technologies and sensors to detect movement and proximity of people in the room. The physical structure is such that up to 40 people may climb, rest, or walk around it, while sensors cause the ‘landscape’ to continuously change as as long as there is human presence. Often the imagery responds to movements, so running across the top of the structure may cause it to highlight the participants footsteps. Other motifs include grids, filling with water, orbs or color that can be ‘kicked’ around, and various abstract color forms.

Source: http://www.markuslerner.com/projects/polygon_playground/?lang=en&imageID=3&order=ASC&by=category