Since I posted this in the Hash forum (a little buried there in a WIP though), I’ll post it here as well. It’s a Script-Fu I made for GIMP that makes iris maps.
To use the script (after unzipping the file), put it (irismap.scm) in the scripts folder in the GIMP directory…on Windows XP it would be something like “c:\Program Files\GIMP-2.0\share\gimp\2.0\scripts”. Once the script is in the correct folder, you can start GIMP and use the script by going to “Xtns\Script-Fu\Misc\irismap”. On the menu that comes up, all of the listed variables can be edited by clicking on them. The default settings make one brown iris that is 400 pixels wide and 400 pixels in height with a background color of a version of purple (200, 0, 200). If you uncheck the “flattenlayers” button, the image will have twelve separate layers (so you can tweak individual layers before “flattening” the image). If you want to save your original iris with its’ layers separated, you’ll want to make it an XCF file. To save the file as one layer for using in Animation Master (or any other program), you’ll have to “flatten” the image by using the “Flatten Image” tool in the image’s “Layers” menu. GIMP will use the color you have selected as the background color in your color picker as the background for the flattened image. Using this script you can only get an oval iris and pupil, but they don’t have to be perfect circles. The smallest overall iris size this script can make is 400x400 with a minimum pupil size of 125x125…the maximum overall size and pupil size is 9999x9999 at the moment but that was an arbitrary limit I put on it, you can change that size by changing the setting in the Script-Fu if you have a need for a larger iris.
Once I get a website up I’ll have a home for this script, for now, here it is.