1 <?xml version="1.0" encoding="ISO-8859-1"?>
3 <screensaver name="apollonian" _label="Apollonian">
7 <video href="https://www.youtube.com/watch?v=aeWnjSROR8U"/>
9 <boolean id="label" _label="Draw labels" arg-unset="-no-label"/>
11 <boolean id="altgeom" _label="Include alternate geometries"
12 arg-unset="-no-altgeom"/>
14 <!-- don't know what -count does -->
16 <number id="cycles" type="slider" arg="-cycles %"
17 _label="Depth" _low-label="Shallow" _high-label="Deep"
18 low="1" high="20" default="20"/>
20 <number id="ncolors" type="slider" arg="-ncolors %"
21 _label="Number of colors" _low-label="Two" _high-label="Many"
22 low="2" high="255" default="64"/>
24 <number id="delay" type="slider" arg="-delay %"
25 _label="Speed" _low-label="Slow" _high-label="Fast"
26 low="0" high="1000000" default="1000000"
29 <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
31 <xscreensaver-updater />
34 A fractal packing of circles with smaller circles, demonstrating
37 https://en.wikipedia.org/wiki/Apollonian_gasket
38 https://en.wikipedia.org/wiki/Descartes%27_theorem
40 Written by Allan R. Wilks and David Bagley; 2002.