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Painting with light (and an iPad)
Forget writing your name in the night air with a sparkler, this iPad app lets you create whole city skylines. Dentsu London and design consultancy BERG have used layers of flashing images to create 3D image bubble machine. By pulling the iPad slowly through the air, and recording the scene using stop motion photography, the user can paint stunning 3D light forms.
BERG explains the technique, in more detail: "We create software models of three-dimensional typography, objects and animations. We render cross sections of these models, like a virtual CAT scan, making a series of outlines of slices of each form. We play these back on the surface of the iPad as movies, and drag the iPad through the air to extrude shapes captured in long exposure photographs. Each 3D form is itself a single frame of a 3D animation, so each long exposure still is only a single image in a composite stop frame animation."
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