Theory
Having seen some interesting computational artwork lately (especially used as people's wallpapers on the computers), I thought I'd just quickly see what I could bang out where the artwork was basically generated by the theory of graphitational forces on particles. It only took an evening, but the final results looked quite nice, I thought.

Features
(Gravity is written for Win9X/NT/2000)

The process of creating a wallpaper with the utility is relatively simple:

• Set a random Seed - the computer will pick one randomly on starting up. You can always pick another of your own, or you can ask it to Reseed automatically - essentially this seed is a unique number which you can use to repeatedly create the same image time and again if you so need.
• Choose the number of Objects - these are essentially the items that will result in the bright light lines.
• Choose the amount of Dust - these are the smaller items that create the background explosive effects.
• Set the Screen Size you want the image to be created at (the preview window will only show 800x600 of the image, but by right-click-dragging with your mouse you can scroll the preview window around)
• Hit Go to set the generation going.
• You can Pause at any time, but the utility will Complete automatically when it has gone through 10,000 cycles.
• At any point you can Save out the current image to your hard-drive.

One Final option is the Not Light option. With this unselected, the particles will act more like light trails, whilst with it clicked on you will end up with a ball of string effect, as demonstrated below:

"Not Light" switched off (default) (Zoomed in section)

"Not Light" switched on (Zoomed in section)

Gravity Executable (39.9Kb Zip File)
This should be all you need to run the utility.

Also, find below two exports from the utility that I've performed further repalettisation of to alter into (what I think) are nicer wallpapers:

Pink Arc (1280 x 1024)

Rose (1280 x 1024)

If you've downloaded Gravity and had problems with it, email me at the address shown below and I'll try and have a look into what's going wrong.