talvi > software > Fishey

Fishey magnifier

Platform: RISC OS only.

Fishey works much like a typical desktop magnifier, with the difference that the magnification varies across the simulated lens: it is greatest at the centre, and zero at the edges. This produces a barrel distortion effect, where straight lines become curved near the edge of the magnifier. Similar barrel distortion is produced by fish-eye camera lenses, hence the name.

I wrote this program untold ages ago when I programmed for Acorn machines. Six years after releasing it and forgetting it, I had a flattering request for the source in order that a 32-bit version could be produced. I was, of course, delighted to oblige. It is released under the GNU GPL.

Here is a zip file containing source, executable and documentation.

Last modified 2005-03-31 21:44 BST