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