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XScreenSaver !!!XScreenSaver NAME SYNOPSIS DESCRIPTION OPTIONS ENVIRONMENT SEE ALSO BUGS COPYRIGHT AUTHOR ---- !!NAME rocks - animation of flying through an asteroid field !!SYNOPSIS __rocks__ [[-display ''host:display.screen''] [[-foreground ''color''] [[-background ''color''] [[-window] [[-root] [[-mono] [[-ncolors ''n''] [[-install] [[-visual ''visual''] [[-count ''integer''] [[-delay ''usecs''] [[-speed ''integer''] [[-norotate] [[-nomove] [[-3d] !!DESCRIPTION The ''rocks'' program draws an animation of an asteroid field moving past the observer (or vice versa). Sometimes the observer picks up spin on Z axis. !!OPTIONS ''rocks'' accepts the following options: __-window__ Draw on a newly-created window. This is the default. __-root__ Draw on the root window. __-mono__ Make all the rocks the same color. __-ncolors colors__ How many different colors to use. Default 5. Colors are chosen randomly. __-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. __-count__ ''integer'' Maximum number of rocks to draw on the screen at once. Default 100. __-speed__ ''integer'' A measure of the speed with which the observer and the rocks pass each other, from 1 to 100. Default 100, meaning ``very fast.'' If you're on a slow display connection (the animation looks jerky) then try making this number smaller, and/or decreasing the number of rocks. __-delay__ ''microseconds'' Number of microseconds to delay between each frame. Default 50000, meaning about 1/20th second. Compare and contrast with ''-speed'', above. __-norotate__ Don't rotate the observer; just fly through the field on the level. __-nomove__ Don't turn the observer; just fly straight ahead through the field. __-3d__ Do red/blue 3d separations: if you look at the screen with 3d glasses, the rocks will be ''jumping'' right ''out'' at you. Oooooh, scaaary! !!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. !!SEE ALSO X(1), xscreensaver(1) !!BUGS There should be an option to display doppler shift (a gravity rainbow.) Speed of rotation should be settable. Default speed of rotation should be relative to forward velocity. !!COPYRIGHT Copyright 1992 by Jamie Zawinski. 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 !!AUTHOR Based on Lisp Machine code copyright 1988 John Nguyen Ported to C and X by Jamie Zawinski Steering code by Jeremie Petit; 3D code by theiling@coli.uni-sb.de. ----
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