git.hungrycats.org Git - xscreensaver/blob - hacks/config/quasicrystal.xml

   1 <?xml version="1.0" encoding="ISO-8859-1"?>
   2
   3 <screensaver name="quasicrystal" _label="QuasiCrystal" gl="yes">
   4
   5   <command arg="-root"/>
   6
   7   <video href="http://www.youtube.com/watch?v=JsGf65d5TfM"/>
   8
   9   <hgroup>
  10    <vgroup>
  11     <number id="delay" type="slider" arg="-delay %"
  12             _label="Frame rate" _low-label="Low" _high-label="High"
  13             low="0" high="100000" default="30000"
  14             convert="invert"/>
  15
  16     <number id="speed" type="slider" arg="-speed %"
  17             _label="Speed" _low-label="Slow" _high-label="Fast"
  18             low="0.1" high="5.0" default="1.0"/>
  19    </vgroup>
  20    <vgroup>
  21     <number id="count" type="slider" arg="-count %"
  22             _label="Density" _low-label="Low" _high-label="High"
  23             low="7" high="37" default="17"/>
  24
  25     <number id="contrast" type="slider" arg="-contrast %"
  26             _label="Contrast" _low-label="Low" _high-label="High"
  27             low="0" high="100" default="30"/>
  28    </vgroup>
  29   </hgroup>
  30
  31   <hgroup>
  32    <boolean id="wander"    _label="Displacement" arg-unset="-no-wander"/>
  33    <boolean id="spin"      _label="Rotation"     arg-unset="-no-spin"/>
  34    <boolean id="symmetric" _label="Symmetry"     arg-unset="-no-symmetry"/>
  35    <boolean id="showfps"   _label="Show frame rate" arg-set="-fps"/>
  36   </hgroup>
  37
  38   <xscreensaver-updater />
  39
  40   <_description>
  41 A quasicrystal is a structure that is ordered but aperiodic.
  42 Two-dimensional quasicrystals can be generated by adding a set of
  43 planes where x is the sine of y.  Different complex aperiodic plane
  44 tilings are produced depending on the period, position, and rotation
  45 of the component planes, and whether the rotation of the planes is
  46 evenly distributed around the circle (the "symmetry" option, above)
  47 or random.
  48
  49 See also the "RD-Bomb", "CWaves" and "Penrose" screen savers.
  50
  51 http://en.wikipedia.org/wiki/Quasicrystal
  52
  53 Written by Jamie Zawinski; 2013.
  54   </_description>
  55 </screensaver>