1 <?xml version="1.0" encoding="ISO-8859-1"?>
3 <screensaver name="epicycle" _label="Epicycle">
7 <number id="ncolors" type="slider" arg="-colors %"
8 _label="Number of Colors" _low-label="Two" _high-label="Many"
9 low="1" high="255" default="100"/>
11 <number id="delay" type="slider" arg="-delay %"
12 _label="Speed" _low-label="Slow" _high-label="Fast"
13 low="0" high="200000" default="1000"
16 <number id="holdtime" type="slider" arg="-holdtime %"
17 _label="Duration" _low-label="1 second" _high-label="1 minute"
18 low="1" high="60" default="2"/>
20 <number id="linewidth" type="spinbutton" arg="-linewidth %"
21 _label="Line Thickness" low="1" high="50" default="4"/>
23 <number id="harmonics" type="spinbutton" arg="-harmonics %"
24 _label="Harmonics" low="1" high="20" default="8"/>
26 <!-- #### -color0 [red] -->
27 <!-- #### -colours [100] -->
28 <!-- #### -foreground [white] -->
29 <!-- #### -min_circles [2] -->
30 <!-- #### -max_circles [10] -->
31 <!-- #### -min_speed [0.003] -->
32 <!-- #### -max_speed [0.005] -->
33 <!-- #### -timestep [1.0] -->
34 <!-- #### -divisor_poisson [0.4] -->
35 <!-- #### -size_factor_min [1.05] -->
36 <!-- #### -size_factor_max [2.05] -->
39 This program draws the path traced out by a point on the edge of a
40 circle. That circle rotates around a point on the rim of another
41 circle, and so on, several times. These were the basis for the
42 pre-heliocentric model of planetary motion. Written by James