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RedHat 9 (Linux i386) - man page for t3d (redhat section 1)

t3d(1)											   t3d(1)

NAME
       t3d - clock using flying balls to display the time

SYNOPSIS
       t3d [  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 deforma-
	      tion 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 fac-
	      tor 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 useful 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 lightning 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 program displaying balls.

COPYING
       Copy,  modify,  and distribute T3D either under GPL version 2 or newer, or under the stan-
       dard 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)


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