nice.
a friend of mine is working on a similar project. he first made a testtool for dome projections
http://vimeo.com/13427399
and is now working on the second part, the fish eye projection. I just pointed him to your sketch. might help. so thanks for sharing!

yes, really great.

btw, I added a fish eye example in the latest version of glgraphics, implemented as a glsl shader. However, yours is based on a better mathematical model of the effect and looks much better, as far as I can tell. I'll try to port it to glsl whenever I have the chance...

As Cedric said, I was working with fulldomes and therefore needed a realtime fisheye distortion. I am using cubemaps, that are reflected on a sphere using opengl. It was tested in the Potsdam, Germany fulldome and works out.

So you might download the project or have a look at the applet.

Hope this helps.
@andres.colubri , I am using your glsl infrastructure to load the reflection shaders :) Thanks for the library!

still doesnt work on my pc, as well as the applet :(

but now as i see the picture, is there already a documentation of this project ?

@andres

Thats a nice sketch. How do I make the fisheye concave (kind of like your image above?)

Thanks.

Actually, that screenshot shows a wrong version of the fish eye shader :-) because the curves should be convex instead...