Section: XScreenSaver manual (6)
Updated: 5.40 (12-Aug-2018)
substrate - Grow crystal-like lines on a computational substrate
Lines like crystals grow on a computational substrate. A simple
perpendicular growth rule creates intricate city-like structures. Optionally, cracks may also be circular, producing a cityscape more familiar to places for which city planning is a distant, theoretical concern.
Ported from the code by j.tarbell at http://complexification.net
accepts the following options:
- -wireframe (Default: False)
Don't draw sand-painting colored effects, only make a wireframe.
- -max-cycles cyclecount (Default: 10000)
Maximum number of growth cycles before restarting. The higher this is,
the more complex the art.
- -growth-delay delayms (Default: 18000)
Delay in ms between growth cycles. More delay, slower (but smoother
and less CPU intensive)
- -initial-cracks numinitial (Default: 3)
Initial number of cracks in the substrate
- -max-cracks nummax (Default: 100)
Maximum number of cracks in the substrate at a single time
- -sand-grains numgrains (Default: 64)
Number of sand grains dropped during coloring. More grains cause
a denser colour but use more cpu power.
- -circle-percent circlepercent (Default: 0)
The percentage of the cracks will be circular.
Display the current frame rate and CPU load.
to get the default host and display number.
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.
Copyright © 2003 by J. Tarbell
Ported to XScreensaver 2004 by Mike Kershaw (firstname.lastname@example.org)
J. Tarbell <email@example.com
Mike Kershaw <firstname.lastname@example.org>, Oct-04