substrate - Grow crystal-like lines on a computational substrate
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]
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
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. |
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 J. Tarbell (complex AT complexification DOT net, http://www.complexification.net).
Ported to XScreensaver 2004 by Mike Kershaw (dragorn AT kismetwireless DOT net)
J. Tarbell <complex AT complexification DOT net>, Jun-03
Mike Kershaw <dragorn AT kismetwireless DOT net>, Oct-04