Ubuntu Feisty 7.04 manual page repository
Ubuntu is a free computer operating system based on the Linux kernel. Many IT companies, like DeployIS is using it to provide an up-to-date, stable operating system.
Provided by: xscreensaver-gl_4.24-5ubuntu2_i386
jigglypuff - save your screen by tormenting your eyes.
jigglypuff [-display host:display.screen] [-visual visual] [-window] [-root] [-delay number] [-cycles number] [-wireframe] [-fps] [-color colorspec] [-spooky] [-complexity n] [-speed n] [-spherism n] [-hold n] [-distance n] [-damping n]
This draws all manners of obscene, spastic, puffy, vaguely ball-shaped objects orbiting lazily about the screen, with a dizzying array of mostly pointless options.
-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. -window Draw on a newly-created window. This is the default. -root Draw on the root window. -delay number Per-frame delay, in microseconds. Default: 20000 (0.02 sec‐ onds.). -wireframe Render in wireframe instead of solid. Default: render solid. -fps | -no-fps Display frames per second. Default: off. -tetra | -no-tetra Whether to start the shape in the form of a tetrahedron. The default is to start as a sphere. -color colorspec Available options for colorspec are: cycle, flowerbox, clown‐ puke, chrome and #xxxxxx (i.e an (old-style) X color specifica‐ tion.) Default: cycle -spooky n This option controls a kind of interesting effect obtained by using unnormalized normal vectors (how’s that for an oxymoron?) in OpenGL. A value of zero disables the effect. Other values vary the lengths of the normals proportionally. Okay, so it’s not very spooky. Sue me. Default: 0 -complexity n Valid options are 1, 2, and 3. Everything else is treated as though it were 2, which is the default. This controls the num‐ ber of polygons in the ’thing’. A value of 1 yields 1024, and the values go up in powers of 4. (i.e. 4096, 16384.) note: There is an inherent lack of stability at lower complex‐ ity, which can cause the shape to devolve into a ’flying sno‐ trag’. -speed n Controls how fast the blob moves around the screen. Default: 500. -spherism, -hold, -distance, -damping These options control the ’jigglyness’. The best way to explain these is to explain how jigglypuff works. Basically, the shape is a tetrahedron whose faces are subdivided into a number of triangles, forming a mesh. Each of the vertices of the mesh has two different forces applied to it: one proportional to its distance from the surface of a sphere, and one proportional to the difference of the distance to each of its neighbors in the mesh to a given ideal distance. In short, one tries to move the points into the configuration of a sphere, and the other tries to push them back into a tetrahedron. The catch is that the points have inertia, so they always overshoot their target, and hence they oscillate. The magnitudes of the two forces is con‐ trolled by the options ’spherism’ and ´hold’; ’distance’ speci‐ fies the distance the vertices seek to keep from their neigh‐ bors, with 500 corresponding to the size of the start tetrahe‐ dron. e.g. if you were to give the options ’-tetra -spherism 0 -distance 500’, you would end up with a stable tetrahedron. The ’damping’ option can help to keep the blob from collapsing or flying apart. The option specifies the speed at which damping starts, hence lower values mean more damping. Defaults: spherism: 75; hold: 800; distance: 100; damping: 500. -random Probably the only parameter you’l ever need. Overrides almost all of the parameters with random values. The values affected are: speed, spherism, hold, distance, damping, spooky, color, wireframe and tetra. Default: off
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. xscreensaver(1)
Copyright © 2003 by Keith Macleod. 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 repre‐ sentations are made about the suitability of this software for any pur‐ pose. It is provided "as is" without express or implied warranty.
By Keith Macleod