twilight(6D)

NAME
     twilight - twilight sky screen background

SYNOPSIS
     twilight

DESCRIPTION
     twilight is a screen background (root window) that looks like the western
     sky as the sun sets (or perhaps the eastern sky as the sun rises).  The
     screen background is smoothly shaded from deep black to azure to orange,
     and is topped with random stars and constellations.

     twilight renders using the GL into an imakebackground window.  The range
     of colors is achieved by drawing two Gouraud shaded rectangles.  The
     stars are simply random patterns of dots, colored so that they blend with
     the sky color as they approach the horizon.

NOTE
     On machines which do not support Gouraud shading in RGB mode, the
     background is drawn as a solid azure.

AUTHOR
     Howard Look

SEE ALSO
     bgpaste(6D), xsetroot(1), imakebackground(3G),