Provided by: xscreensaver-gl-extra_5.08-0ubuntu3_i386
crackberg - Lose your way wandering some height fields, and enjoy
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]
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:
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.
Return to automatic control.
crackberg accepts the following options:
-root Draw on the root window.
-window Draw on a newly-created window. This is the default.
Install a private colormap for the window.
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
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.
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).
Do not display 'water' (forces negative values to zero, and
selects a different coloring method).
Value in range [0.2,1.0] (default 0.6) specifying proportion of
viewable XY plane which is to be drawn upon.
Selects color scheme. Use with no or bogus argument for cur-
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
DISPLAY to get the default host and display number.
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.
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.
Matus Telgarsky <firstname.lastname@example.org>, 2005.