<?xml version="1.0" encoding="ISO-8859-1"?>

<screensaver name="surfaces" _label="Surfaces">

  <command arg="-root"/>

  <number id="delay" type="slider" arg="-delay %"
          _label="Frame rate" _low-label="Low" _high-label="High"
          low="0" high="100000" default="20000"
          convert="invert"/>

  <number id="descent" type="slider" arg="-speed %"
          _label="Duration" _low-label="Short" _high-label="Long"
          low="2" high="2000" default="300"
          convert="invert"/>

  <hgroup>
   <select id="surface">
    <option id="random"    _label="Random Surface"/>
    <option id="dini"      _label="Dini's Surface"      arg-set="-surface dini"/>
    <option id="enneper"   _label="Enneper's Surface"   arg-set="-surface enneper"/>
    <option id="kuen"      _label="Kuen Surface"        arg-set="-surface kuen"/>
    <option id="moebius"   _label="Moebius Strip"       arg-set="-surface moebius"/>
    <option id="seashell"  _label="Seashell"            arg-set="-surface seashell"/>
    <option id="swallow"   _label="Swallowtail"         arg-set="-surface swallowtail"/>
    <option id="bohemian"  _label="Bohemian Dome"       arg-set="-surface bohemian"/>
    <option id="whitney"   _label="Whitney Umbrella"    arg-set="-surface whitney"/>
    <option id="pluecker"  _label="Pluecker's Conoid"   arg-set="-surface pluecker"/>
    <option id="henneberg" _label="Henneberg's Surface" arg-set="-surface henneberg"/>
    <option id="catalan"   _label="Catalan's Surface"   arg-set="-surface catalan"/>
    <option id="corkscrew" _label="Corkscrew Surface"   arg-set="-surface corkscrew"/>
   </select>

   <select id="mode">
     <option id="random"    _label="Random Display Mode"/>
     <option id="points"    _label="Points"     arg-set="-mode points"/>
     <option id="lines"     _label="Lines"      arg-set="-mode lines"/>
     <option id="line_loop" _label="Line Loops" arg-set="-mode line-loops"/>
   </select>
  </hgroup>

  <hgroup>
   <boolean id="wander"  _label="Wander" arg-set="-wander"/>
   <boolean id="spin"    _label="Spin" arg-unset="-no-spin"/>
   <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
  </hgroup>

  <_description>
This draws a visualization of several interesting parametric surfaces.

http://mathworld.wolfram.com/DinisSurface.html
http://en.wikipedia.org/wiki/Enneper_surface
http://mathworld.wolfram.com/EnnepersMinimalSurface.html
http://mathworld.wolfram.com/KuenSurface.html
http://en.wikipedia.org/wiki/Moebius_strip
http://mathworld.wolfram.com/Seashell.html
http://mathworld.wolfram.com/SwallowtailCatastrophe.html
http://mathworld.wolfram.com/BohemianDome.html
http://en.wikipedia.org/wiki/Whitney_umbrella
http://mathworld.wolfram.com/PlueckersConoid.html
http://mathworld.wolfram.com/HennebergsMinimalSurface.html
http://mathworld.wolfram.com/CatalansSurface.html
http://mathworld.wolfram.com/CorkscrewSurface.html

Written by Andrey Mirtchovski and Carsten Steger; 2003.
  </_description>
</screensaver>
