X11Libre Project, Thoughts?

nevj · July 1, 2025, 4:12am

Thank you, I did not know about codeberg.

There is quite an amount of scientific software that uses X11 and has not yet been rewritten to use Wayland directly, so it requires Xwayland to run under Wayland. Xwayland is not always a good performer.
Examples are

Scribus
Gimp
Octave
R and Rstudio
Xv and imageJ
Sagemath
There should , therefore be some interest in X11Libre project from the scientific world.

I also noticed you had a category on codeberg for interesting C programs… I would like to nominate ‘aa’ ( astronomical almanac)… it calculates positions of sun, moon, planets, and astronomical objects.

github.com/pmontrasio/astronomical-almanac-js

aa.c

master

/* This program calculates orbits of planetary bodies and reduces
 * the coordinates of planets or stars to geocentric and topocentric
 * place.  An effort has been made to use rigorous methods throughout.
 *
 * References to AA page numbers are to The Astronomical Almanac, 1986
 * published by the U.S. Government Printing Office.
 *
 * The program uses as a default the PLAN404 approximations to DE404
 * for planetary positions.
 *
 * Warning! Your atan2() function may not work the same as the one
 * assumed by this program.
 * atan2(x,y) computes atan(y/x), result between 0 and 2pi.
 *
 * S. L. Moshier, November, 1987
 */



/* Conversion factors between degrees and radians */

This file has been truncated. show original

Its output is for humans… it needs a lot of processing to be computer readable. That is common with old software.