From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / config / euler2d.xml

diff --git a/hacks/config/euler2d.xml b/hacks/config/euler2d.xml
index ee5cd681add1588f5ea9c6bf21fe4c11ddfd5ff3..31222e661533fec19f373b94aec7a50892cc8753 100644 (file)
--- a/hacks/config/euler2d.xml
+++ b/hacks/config/euler2d.xml
@@ -1,38 +1,52 @@
 <?xml version="1.0" encoding="ISO-8859-1"?>
 
-<screensaver name="euler2d" _label="Euler2d">
+<screensaver name="euler2d" _label="Euler2D">
 
   <command arg="-root"/>
 
-  <number id="count" type="slider" arg="-count %"
-           _label="Particles" _low-label="Few" _high-label="Many"
-          low="2" high="5000" default="1024"/>
+  <video href="https://www.youtube.com/watch?v=ZH1ZtfId0iA"/>
 
-  <number id="eulertail" type="slider" arg="-eulertail %"
-           _label="Trail Length" _low-label="Short" _high-label="Long"
-          low="2" high="500" default="10"/>
+  <hgroup>
+   <vgroup>
+    <number id="delay" type="slider" arg="-delay %"
+            _label="Frame rate" _low-label="Low" _high-label="High"
+            low="0" high="100000" default="10000"
+            convert="invert"/>
 
-<!--
-  <number id="eulerpower" type="slider" arg="-eulerpower %"
-           _label="Power" _low-label="Low" _high-label="High"
-          low="0.5" high="3.0" default="1.0"/>
--->
+    <number id="count" type="slider" arg="-count %"
+             _label="Particles" _low-label="Few" _high-label="Many"
+            low="2" high="5000" default="1024"/>
 
-  <number id="cycles" type="slider" arg="-cycles %"
-           _label="Duration" _low-label="Short" _high-label="Long"
-          low="100" high="5000" default="3000"/>
+    <number id="eulertail" type="slider" arg="-eulertail %"
+             _label="Trail length" _low-label="Short" _high-label="Long"
+            low="2" high="500" default="10"/>
+   </vgroup>
 
-  <number id="ncolors" type="slider" arg="-ncolors %"
-            _label="Number of Colors" _low-label="Two" _high-label="Many"
-            low="2" high="255" default="64"/>
+   <vgroup>
+  <!--
+    <number id="eulerpower" type="slider" arg="-eulerpower %"
+             _label="Power" _low-label="Low" _high-label="High"
+            low="0.5" high="3.0" default="1.0"/>
+  -->
 
-  <number id="delay" type="slider" arg="-delay %"
-          _label="Speed" _low-label="Slow" _high-label="Fast"
-          low="0" high="300000" default="10000"
-          convert="invert"/>
+    <number id="cycles" type="slider" arg="-cycles %"
+             _label="Duration" _low-label="Short" _high-label="Long"
+            low="100" high="5000" default="3000"/>
+
+    <number id="ncolors" type="slider" arg="-ncolors %"
+              _label="Number of colors" _low-label="Two" _high-label="Many"
+              low="2" high="255" default="64"/>
+   </vgroup>
+  </hgroup>
+
+  <boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
+  <xscreensaver-updater />
 
   <_description>
-Simulates two dimensional Incompressible Inviscid Fluid Flow.
+Simulates two dimensional incompressible inviscid fluid flow.
+
+https://en.wikipedia.org/wiki/Euler_equations_%28fluid_dynamics%29
+https://en.wikipedia.org/wiki/Inviscid_flow
 
 Written by Stephen Montgomery-Smith; 2002.
   </_description>