piecewise — lots of moving circles intersecting in interesting ways.
Synopsis
piecewise [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-count number] [-ncolors number] [-colorspeed number] [-minradius number] [-maxradius number] [-no-db] [-fps]Description
This draws a bunch of moving circles which switch from visibility to invisibility when they intersect.Options
- -visual visual
 - Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual.
 - -window
 - Draw on a newly-created window. This is the default.
 - -root
 - Draw on the root window.
 - -delay number
 - Per-frame delay, in microseconds. Default: 5000 (0.01 seconds.).
 - -count number
 - Number of circles. Default: 32.
 - -ncolors number
 - Number of colors, only one of which is used at a time. Default: 256.
 - -colorspeed number
 - How fast the color changes (0 - 100). Default: 10.
 - -minradius number
 - Minimum circle radius (as a proportion of screen height). Default: 0.05.
 - -maxradius number
 - Maximum circle radius (as a proportion of screen height). Default: 0.2.
 - -db | -no-db
 - Whether to double buffer.
 - -fps
 - Display the current frame rate and CPU load.
 
Environment
- DISPLAY
 - to get the default host and display number.
 - XENVIRONMENT
 - to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property.