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crackberg(6)		      XScreenSaver manual		  crackberg(6)

NAME
       crackberg  -  Lose  your	 way  wandering	 some height fields, and enjoy
       candy.

SYNOPSIS
       crackberg [-root] [-window] [-install]  [-display  host:display.screen]
       [-visual	 visual] [-window-id id] [-delay usecs]	[-fps] [-crack]	[-lit]
       [-boring] [-letterbox] [-flat] [-wire] [-nowater]  [-visibility	float]
       [-color string] [-nsubdivs integer]

DESCRIPTION
       Flies  through  height maps, optionally animating the instantiation and
       destruction of generated	tiles; by default,  tiles  'grow'  into	 place
       (height gradually increased up to correct value).  In windowed mode the
       following key controls are available:

       left, right
	       Turn left and right.

       a,w,s,d Move left, forwards, backwards, and to the right, respectively.

       1,2     Decrease	and increase manual speed, respectively.

       Spacebar
	       Return to automatic control.

OPTIONS
       crackberg accepts the following options:

       -root   Draw on the root	window.

       -window Draw on a newly-created window.	This is	the default.

       -install
	       Install a private colormap for the window.

       -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.

       -delay microseconds
	       Delay between frames; default 20000 (1/50th of a	second).

       -fps    Display the current frame rate, CPU load, and polygon count.

       -crack  Use all possible	methods	to animate tile	instantiation.

       -boring Do not animate instatiation at all; use this  to	 get  standard
	       landscape generator behavior.

       -letterbox
	       Drawable	 window	 region	has a 16:9 aspect ratio, regardless of
	       actual window size.

       -lit    Enable lighting.

       -flat   Flat shading (OpenGL will use one color per  primitive,	rather
	       than interpolating betwixt vertices).

       -wire   Wireframe.

       -nowater
	       Do not display 'water' (forces negative values to zero, and se-
	       lects a different coloring method).

       -visibility float
	       Value in	range [0.2,1.0]	(default 0.6) specifying proportion of
	       viewable	XY plane which is to be	drawn upon.

       -color string
	       Selects	color  scheme.	Use with no or bogus argument for cur-
	       rent list.

       -nsubdivs integer
	       Number of times to recursively subdivide	each triangular	 tile.
	       Each  increment increases total triangles by a factor of	4; for
	       instance	the default setting 4 results  in  256	triangles  per
	       tile.

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 (C) 2005 by Matus Telgarsky.  Permission to use,  copy,  mod-
       ify,  distribute,  and sell this	software and its documentation for any
       purpose is hereby granted without fee, provided that  the  above	 copy-
       right  notice  appear in	all copies and that both that copyright	notice
       and this	permission notice appear in supporting documentation.  No rep-
       resentations  are  made	about the suitability of this software for any
       purpose.	 It is provided	"as is"	without	express	or implied warranty.

AUTHOR
       Matus Telgarsky <catachresis@cmu.edu>, 2005.

X Version 11		      5.44 (20-Mar-2020)		  crackberg(6)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT | SEE ALSO | COPYRIGHT | AUTHOR

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