Print XII

Stills from a ray-traced animation of the computer (Colour).

The source of the images was manual digitization of the authorís home computer which was used to produce these illustrations with software by Ace Computing on an Archimedes computer.

Ray-tracing involves individually estimating the colour of every pixel in the image plane by calculating the trajectory of a ray of light cast through the (hypothetical) eye of the viewer, through the screen and into object space, where it can be reflected, diffracted or absorbed. On small microcomputers these techniques are still in their infancy. The pictures are slightly overexposed as a result.