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

<screensaver name="hydrostat" _label="Hydrostat" gl="yes">

  <command arg="--root"/>

  <video href="https://www.youtube.com/watch?v=nn-nA18hFt0"/>

  <hgroup>
   <vgroup>
    <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="speed" type="slider" arg="--speed %"
            _label="Animation speed" _low-label="Slow" _high-label="Fast"
            low="0.01" high="4.0" default="1.0"
            convert="ratio"/>

    <number id="count" type="slider" arg="--count %"
            _label="Number of squid" _low-label="One" _high-label="Many"
            low="1" high="100" default="3" />

    <number id="head_radius" type="slider" arg="--head-radius %"
            _label="Head size" _low-label="Small" _high-label="Large"
            low="10" high="100" default="60" />

    <number id="tentacles" type="slider" arg="--tentacles %"
            _label="Number of tentacles" _low-label="Few" _high-label="Many"
            low="3" high="100" default="35" />

   </vgroup>
   <vgroup>

    <number id="thickness" type="slider" arg="--thickness %"
            _label="Thickness" _low-label="Thin" _high-label="Thick"
            low="3" high="40" default="18" />

    <number id="length" type="slider" arg="--length %"
            _label="Length of tentacles" _low-label="Short" _high-label="Long"
            low="10" high="150" default="55" />

    <number id="gravity" type="slider" arg="--gravity %"
            _label="Gravity" _low-label="Weak" _high-label="Strong"
            low="0" high="10.0" default="0.5" />

    <number id="current" type="slider" arg="--current %"
            _label="Current" _low-label="Weak" _high-label="Strong"
            low="0.0" high="10.0" default="0.25" />

    <number id="friction" type="slider" arg="--friction %"
            _label="Viscosity" _low-label="Low" _high-label="High"
            low="0.0" high="0.1" default="0.02" />
   </vgroup>
  </hgroup>

  <hgroup>
   <boolean id="pulse" _label="Pulse"    arg-unset="--no-pulse" />
   <boolean id="wire"   _label="Wireframe" arg-set="--wireframe"/>
   <boolean id="showfps" _label="Show frame rate" arg-set="--fps"/>
   <xscreensaver-updater />
  </hgroup>

  <_description>
Wiggly squid or jellyfish with many tentacles.

A muscular hydrostat is a biological structure used to move its host
about, consisting of muscles with no skeletal support.  It performs
its hydraulic movement without fluid in a separate compartment, as in
a hydrostatic skeleton.

https://en.wikipedia.org/wiki/Muscular_hydrostat

Written by Justin Windle and Jamie Zawinski; 2016.
  </_description>
</screensaver>
