XScreenSaver(1) General Commands Manual 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 (meaning a solid colored surface); light (same as solid, but with lighting effects);
checker (a texture-mapped checkerboard pattern); or grab (meaning grab an image to manipulate.)
When grabbing images, the image will be grabbed from the portion of the screen underlying the window, or from the system's video
input, or from a random file on disk, as indicated by the grabDesktopImages, grabVideoFrames, and chooseRandomImages options in the
~/.xscreensaver file; see xscreensaver-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 surface. 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_MANAGER 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), xscreensaver-getimage(1)
COPYRIGHT
Copyright (C) 2000 by Josiah Pease. Permission to use, copy, modify, distribute, and sell this software and its documentation for any pur-
pose 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 pur-
pose. 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)