Dodge & Burn Particles (Threshold Tartanaters)

Applet displays 1000 particles. Image displays 500 particles after 45 minutes

Decided to see what would happen if I put some particles into effect that have a tron light cycle type behaviour of always turning right to an oncoming line. However, half the particles dodge to a threshold and then turn and the others burn. Starts off like tartan and then organises itself into a sort of wood grain effect. The threshold demands they settle into a high contrast image. The image was achieved at a pixel space squared to particle ratio of 480:1. (Code updated 26/04/05)