Fabien Sanglard's non-blog

  

Free direction Tunnel effect

The beauty of interpolation...

The actual stuff

	Basic raytracing
	Interpolated raytracing 10x faster
	Download Eclipse project (29KB).
	Drop me a line.

History

After finalizing the Tunnel Effect, I wanted to go for something a little bit harder and I came across this fantastic text by BlackAxe / KoLOr (1997).
Seriously, this paper is so well written that I have nothing to add. Only that I learned the golden rule in computer graphic:

Perception is reality..

Using raytracing technique, you can get a "Free direction Tunnel effect", much more sophiticated than the first Tunnel. The only hard part to understand (and I guess it was intentional) is when it comes to "interpolation", which is the essence of the trick.

First implementation

If you follow the procedure described you get a raytraced Free direction Tunnel.....running at 7 frames per secondes: You can check it out Here.
Beautiful but slow.