substrate
Section: XScreenSaver manual (6x)
Updated: 6.00-1.fc34 (02-Apr-2021)
Page Index
NAME
substrate - Grow crystal-like lines on a computational substrate
SYNOPSIS
substrate
[-display
host:display.screen]
[-foreground
color]
[-background
color]
[-wireframe]
[-max-cycles
cyclecount]
[-growth-delay
delayms]
[-initial-cracks
numinitial]
[-max-cracks
nummax]
[-sand-grains
numgrains]
[-circle-percent
circlepercent]
[-fps]
DESCRIPTION
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
OPTIONS
substrate
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)
art.
- -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.
- -fps
-
Display the current frame rate and CPU load.
ENVIRONMENT
- 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.
SEE ALSO
X(1),
xscreensaver(1)
COPYRIGHT
Copyright © 2003 by J. Tarbell
(
complex@complexification.net,
http://www.complexification.net).
Ported to XScreensaver 2004 by Mike Kershaw (dragorn@kismetwireless.net)
AUTHOR
J. Tarbell <
complex@complexification.net>, Jun-03
Mike Kershaw <dragorn@kismetwireless.net>, Oct-04