XScreenSaver(1)XScreenSaver(1)NAMEgflux - rippling surface graphics hack
SYNOPSISgflux [-display host:display.screen] [-window] [-root]
[-install] [-visual visual] [-delay microseconds] [-fps]
[-squares num] [-resolution num] [-mode mode] [-flat num]
[-speed num] [-rotationx num] [-rotationy num] [-rotationz
num] [-waves num] [-waveChange num] [-waveHeight num]
[-waveFreq num] [-zoom num]
DESCRIPTION
The gflux program draws a colourfull animated rippling
square rotating in 3D space.
OPTIONSgflux accepts the following options:
-window Draw on a newly-created window. This is the
default.
-root Draw on the root window.
-install
Install a private colormap for the window.
-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.
-squares num
Specifies the size of the grid in squares. default
19
-resolution num
Specifies the wireframe detail of the squares.
default 4
-mode mode
Specifies the draw method: wireframe; solid (mean
ing a solid colored surface); light (same as
solid, but with lighting effects); checker (a tex
ture-mapped checkerboard pattern); or grab (mean
ing grab an image to manipulate.)
When grabbing images, the image will be grabbed
from the portion of the screen underlying the win
dow, or from the system's video input, or from a
random file on disk, as indicated by the grabDesk_
topImages, grabVideoFrames, and chooseRandomImages
options in the ~/.xscreensaver file; see xscreen
saver-demo(1) for more details.
-flat num
0 for smooth shading 1 for flat. default 0
-speed num
Specifies speed of ripples flowing over the sur
face. default 0.05
-rotationx num -rotationy num -rotationz num
Specifies the speed of rotation of the surface in
these axis
-waves num
Specifies the number of ripple centres at any one
time. Values should be greater than 1. default 3
-waveChange num
Specifies the duration of a ripple centre. after
this they fade away to be reborn elsewhere with a
different frequency. default 50
-waveHeight num
Specifies the height of ripples on the surface.
default 1.0
-waveFreq num
Specifies the maximum frequency of ripples.
default 3.0
-zoom num
Specifies the size of the viewport. Smaller values
fill the screen with rippling surface. default 1.0
-delay microseconds
How long to pause between frames. Default is
20000, or 0.02 second.
-fps Display a running tally of how many frames per
second are being rendered. In conjunction with
-delay 0, this can be a useful benchmark of your
GL performance.
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_MAN
AGER property.
BUGS
It's not unknown for this and other OpenGL hacks to fail
under hardware accelaration (UtahGLX) and take the X
server with them. Texture images must be 16x16 or 32x32
or 64x64 etc.
SEE ALSOX(1), xscreensaver(1)xscreensaver-demo(1), xscreen
saver-getimage(1)COPYRIGHT
Copyright 2000 by Josiah Pease. Permission to use,
copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without
fee, provided that the above copyright notice appear in
all copies and that both that copyright notice and this
permission notice appear in supporting documentation. No
representations are made about the suitability of this
software for any purpose. It is provided "as is" without
express or implied warranty.
AUTHOR
Josiah Pease <gflux@jpease.force9.co.uk>, 10-Jun-2000.
July 2000 XScreenSaver(1)
