gflux - rippling surface graphics hack

gflux [-display host:display.screen] [-window] [-root] [-install] [-visual visual] [-delay microseconds] [-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] [-wireframe] [-fps]

The gflux program draws a colourfull animated rippling square rotating in 3D space.

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.

-wireframe

Same as "-mode wire".

-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.

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.

X(1), xscreensaver(1) xscreensaver-demo(1), xscreensaver-getimage(1)

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.

Josiah Pease <gflux@jpease.force9.co.uk>, 10-Jun-2000.