1crackberg(6x)                 XScreenSaver manual                crackberg(6x)
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NAME

6       crackberg  -  Lose  your  way  wandering  some height fields, and enjoy
7       candy.
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SYNOPSIS

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

16       Flies  through  height maps, optionally animating the instantiation and
17       destruction of generated tiles; by default,  tiles  'grow'  into  place
18       (height gradually increased up to correct value).  In windowed mode the
19       following key controls are available:
20
21       left, right
22               Turn left and right.
23
24       a,w,s,d Move left, forwards, backwards, and to the right, respectively.
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26       1,2     Decrease and increase manual speed, respectively.
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28       Spacebar
29               Return to automatic control.
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OPTIONS

32       crackberg accepts the following options:
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34       -root   Draw on the root window.
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36       -window Draw on a newly-created window.  This is the default.
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38       -install
39               Install a private colormap for the window.
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41       -visual visual
42               Specify which visual to use.  Legal values are the  name  of  a
43               visual  class,  or the id number (decimal or hex) of a specific
44               visual.
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46       -delay microseconds
47               Delay between frames; default 20000 (1/50th of a second).
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49       -fps    Display the current frame rate, CPU load, and polygon count.
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51       -crack  Use all possible methods to animate tile instantiation.
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53       -boring Do not animate instatiation at all; use this  to  get  standard
54               landscape generator behavior.
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56       -letterbox
57               Drawable  window  region has a 16:9 aspect ratio, regardless of
58               actual window size.
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60       -lit    Enable lighting.
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62       -flat   Flat shading (OpenGL will use one color per  primitive,  rather
63               than interpolating betwixt vertices).
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65       -wire   Wireframe.
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67       -nowater
68               Do  not  display  'water'  (forces negative values to zero, and
69               selects a different coloring method).
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71       -visibility float
72               Value in range [0.2,1.0] (default 0.6) specifying proportion of
73               viewable XY plane which is to be drawn upon.
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75       -color string
76               Selects  color  scheme.  Use with no or bogus argument for cur‐
77               rent list.
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79       -nsubdivs integer
80               Number of times to recursively subdivide each triangular  tile.
81               Each  increment increases total triangles by a factor of 4; for
82               instance the default setting 4 results  in  256  triangles  per
83               tile.
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85

ENVIRONMENT

87       DISPLAY to get the default host and display number.
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89       XENVIRONMENT
90               to  get  the  name of a resource file that overrides the global
91               resources stored in the RESOURCE_MANAGER property.
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SEE ALSO

94       X(1), xscreensaver(1)
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97       Copyright © 2005 by Matus Telgarsky.  Permission to use, copy,  modify,
98       distribute,  and  sell this software and its documentation for any pur‐
99       pose is hereby granted without fee, provided that the  above  copyright
100       notice  appear  in  all  copies and that both that copyright notice and
101       this permission notice appear in supporting documentation.   No  repre‐
102       sentations are made about the suitability of this software for any pur‐
103       pose.  It is provided "as is" without express or implied warranty.
104

AUTHOR

106       Matus Telgarsky <catachresis@cmu.edu>, 2005.
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110X Version 11              5.42-1.fc30.2 (03-Feb-2019)            crackberg(6x)
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