t3d(1)t3d(1)NAMEt3d - clock using flying balls to display the time
SYNOPSISt3d [ options ]...
DESCRIPTION
Time 3D is a clock. It uses flying balls to display the
time. This balls move and wobble around to give you the
impression your graphic workstation with its many XStones
is doing something.
t3d uses mouse and keyboard to let you fly through the
balls. Hit S to speed up, A to slow down, Z to zoom in and
X to zoom out. Use the left mouse button to rotate to the
left and the right mouse button to rotate the view to the
right. Use the middle mouse button to change the optical
axis and the moving direction. 0 (zero) will stop you. Q
quits.
OPTIONS-move factor
Modifies the direction move of t3d. The clock looks
30 degrees* factor to the left and to the right
periodically.
-wobble factor
Modifies the wobbling (sounds nice :-) of t3d by
multiplying the default deformation of the clock
with factor.
-minutes
Shows one small ball for every minute, instead of
one for every 2.5 minutes.
-mag factor
Changes the magnification of t3d. By default, t3d
draws a 200x200 image. A .I factor of 2 means, it
will use a 400x400 image.
-cycle period
Sets the moving cycle to period seconds. By
default, this value is 10 seconds.
-wait microsec
Inserts a wait after drawing one view of the clock.
By default, t3d waits 40 ms after each drawing.
This helps you to keep the performance loss small.
-fast precalc_radius
t3d uses bitmap copy to draw precalculated balls.
You can specify the radius in pixels up to which
t3d should precalculate balls. t3d will set a use
ful range by itself using the magnification when it
is started.
-colcycle
Draws cyclic the color scale used for the balls in
the background instead of the normal black.
-rgb red green blue
Selects the color in RGB color space of the light
ning spot on the balls. All the other colors used
for balls or -colcycle are less intensive colors of
the same hue and saturation. All values in range of
0 to 1.
-hsv hue saturation value
Selects the color in HSV color space. hue is in
degrees from 0 to 360, all other values in range
from 0 to 1. It gives nice but rather unpredictable
results, if you use a saturation of e.g. 2. Try it
at your own risk.
-hsvcycle speed
Rotates the hue axis every 10 seconds* speed.
-help Prints a short usage message.
AUTHOR
Bernd Paysan
Email: bernd.paysan@gmx.de
Hacked on by jwz@jwz.org for xscreensaver.
ACKNOWLEDGEMENT
Acknowledgement to Georg Acher, who wrote the initial pro
gram displaying balls.
COPYING
Copy, modify, and distribute T3D either under GPL version
2 or newer, or under the standard MIT/X license notice.
DISCLAIMER
T3D is not related to T3D(tm), the massive parallel
Alpha--based supercomputer from Cray Research. T3D's name
was invented in 1991, years before the project at Cray
Research started. There is no relation from T3D to Cray's
T3D, even the balls surrounding T3D on some posters
weren't an inspiration for T3D. I don't know anything
about the other way round.
The programming style of T3D isn't intented as example of
good style, but as example of how a fast prototyped demo
may look like. T3D wasn't created to be useful, it was
created to be nice.
KNOWN BUGS
There are no known bugs in T3D. Maybe there are bugs in X.
Slight changes in the T3D sources are known to show these
bugs, e.g. if you remove the (int) casting at the XFillArc
x,y,w,h-coordinates...
Time 3D Version 1.1 t3d(1)
