v1.0: 2017/01/22
This tiny program shows off FLTK's simple concepts
combined with powerful drawing methods very well,
resulting in straightforward coding and good performance.
If the program looks yet complex on the first view, this is only because of the different options it can handle, which inevitably blow up the code a little.
I translated and enhanced a program written in
SmallBasic language (SmallBasic by ChrisWS)
to C++ and FLTK.
I found this code about 2009 "in the web", transcoded it and have improved it slowly over the years, then forgot about it for some more years and now (2017) have found it again and decided to make it public.
As there is no explicit claim for non free code in the original source, I "assume" it can be modified and redistributed freely.
Should this assumption be wrong, please mail me and I will remove it from public access.
This translated code can be used and modified freely without any restrictions in the assumption the original code is free too.
The original source can be found under this link:
SmallBasic Star_field.bas source
This program simulates parallactic movement through a star field. 'Stars' can be of any number and can also be images. Also speed and colors can be adjusted, which gives some nice scenaries.
Check the supplied example*.sh scripts to see the possible arguments.
Test out the performance: call it with e.g. 1000 stars. On my not so new system this uses just 7% cpu! 10000 stars: 29% cpu!
Tested on Linux only. (But should work on Windows too)