/usr/share/xscreensaver/config/hypnowheel.xml is in xscreensaver-gl-extra 5.34-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | <?xml version="1.0" encoding="ISO-8859-1"?>
<screensaver name="hypnowheel" _label="Hypnowheel" gl="yes">
<command arg="-root"/>
<video href="http://www.youtube.com/watch?v=QcJnc9EKJrI"/>
<hgroup>
<vgroup>
<number id="delay" type="slider" arg="-delay %"
_label="Frame rate" _low-label="Slow" _high-label="Fast"
low="0" high="100000" default="20000"
convert="invert"/>
<number id="speed" type="slider" arg="-speed %"
_label="Speed" _low-label="Slow" _high-label="Fast"
low="0.1" high="20.0" default="1.0"/>
<hgroup>
<boolean id="wander" _label="Wander" arg-set="-wander"/>
<boolean id="symmetric" _label="Symmetric twisting" arg-set="-symmetric"/>
</hgroup>
<boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
</vgroup>
<vgroup>
<number id="layers" type="slider" arg="-layers %"
_label="Layers" _low-label="1" _high-label="50"
low="1" high="50" default="4"/>
<number id="count" type="slider" arg="-count %"
_label="Arms" _low-label="2" _high-label="50"
low="2" high="50" default="13"/>
<number id="twistiness" type="slider" arg="-twistiness %"
_label="Twistiness" _low-label="Low" _high-label="High"
low="0.2" high="10.0" default="4.0"/>
</vgroup>
</hgroup>
<xscreensaver-updater />
<_description>
A overlapping, translucent spiral patterns.
The tightness of their spirals fluctuates in and out.
https://en.wikipedia.org/wiki/Moire_pattern
Written by Jamie Zawinski; 2008.
</_description>
</screensaver>
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