substrate - Grow crystal-like lines on a computational substrate

NAME  SYNOPSIS  DESCRIPTION  OPTIONS  ENVIRONMENT  SEE ALSO  COPYRIGHT  AUTHOR 

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NAME

substrate − Grow crystal-like lines on a computational substrate

SYNOPSIS

substrate [−−display host:display.screen] [−−visual visual] [−−window] [−−root] [−−window−id number] [−−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.

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.

−−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.

−−window−id number

Draw on the specified window.

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.

XSCREENSAVER_WINDOW

The window ID to use with −−root.

SEE ALSO

X(1), xscreensaver(1)

COPYRIGHT

Copyright © 2003 by J. Tarbell <[email protected]>.
XScreenSaver port: Mike Kershaw <[email protected]>

AUTHOR

J. Tarbell <[email protected]>, Jun 2003.
Mike Kershaw <[email protected]>, Oct 2004.

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