I have written a program for creating heightmaps of small islands. It was originally written to produce DIY island models for the game Buccaneer, but it can also produce output in a format which Terragen can read. I produced the pictures at the top and bottom of this page by feeding the output from my program into Terragen.
Copyright Status: I intend that this program should be "copyleft". At the time of writing, I have not gone through the GNU General Public License as published by the Free Software Foundation line by line to check that it is exactly what I want, but anyone downloading this program should nevertheless assume that something very much like it applies.
In particular:
1. All modified versions of this program must retain the "copyleft"
status of the original.
2. This program is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability or
fitness for a particular purpose.
The program was created as part of a research project. If you use the program frequently, please help our research by sending feedback. This is a request, not a licence requirement.
If you use the program to create interesting graphics and place them on
a web site, please include a link to this page:
http://pacvarley.110mb.com/Islands.html
Again, this is a request, not a licence requirement.
A small program for producing triangulated mesh models