This program draws a box and a few line segments, and generates a
radial blur outward from it. This creates flowing field effects.
This is done by rendering the scene into a small texture, then
repeatedly rendering increasingly-enlarged and increasingly-transparent
versions of that texture onto the frame buffer. As such, it's quite
graphics intensive: don't bother trying to run this if you don't have
hardware-accelerated texture support. It will hurt your machine bad.
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: 10000 (0.01 seconds.).
-blursize number
How many copies of the scene should be laid down to make the vapor trail.
Default: 15. Larger numbers create smoother fields, but are slower.
-wander | -no-wander
Whether the object should wander around the screen.
-spin [XYZ]
Around which axes should the object spin?
-no-spin
None.
-fps | -no-fps
Whether to show a frames-per-second display at the bottom of the screen.
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.
