Provided by: xscreensaver-gl-extra_5.34-2ubuntu1_amd64
blocktube - draws a swirling, falling tunnel of reflective slabs
blocktube [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-holdtime number] [-changetime number] [-no-texture] [-no-fog] [-wireframe] [-fps]
Blocktube draws a swirling, falling tunnel of reflective slabs. They fade from hue to hue.
-visual visual Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual. -window Draw on a newly-created window. This is the default. -root Draw on the root window. -delay number Per-frame delay, in microseconds. Default: 40000 (0.04 seconds.). -holdtime number How long to stay on the same color. Default: 1000 frames. -changetime number How long it takes to fade to a new color. Default: 200 frames. -no-texture Draw solid blocks intstead of reflective blocks. -no-fog Do not make blocks in the distance be darker. -wireframe Only draw outlines. -fps Display the current frame rate, CPU load, and polygon count.
DISPLAY to get the default host and display number. XENVIRONMENT to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.
Copyright © 2003 by Lars Damerow. Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. No representations are made about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty.
Lars Damerow <firstname.lastname@example.org>