xscreensaver(1)
NAME
gflux - rippling surface graphics hack
SYNOPSIS
gflux [-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.
OPTIONS
gflux 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 ALSO
X(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.