XScreenSaver(1) XScreenSaver(1) NNAAMMEE decayscreen - make a screen meltdown. SSYYNNOOPPSSIISS ddeeccaayyssccrreeeenn [-display _h_o_s_t_:_d_i_s_p_l_a_y_._s_c_r_e_e_n] [-window] [-root] [-mono] [-install] [-visual _v_i_s_u_a_l] [-delay _u_s_e_c_s] [-mode _m_o_d_e] DDEESSCCRRIIPPTTIIOONN The _d_e_c_a_y_s_c_r_e_e_n program creates a melting effect by ran- domly shifting rectangles around the screen. OOPPTTIIOONNSS _d_e_c_a_y_s_c_r_e_e_n accepts the following options: --wwiinnddooww Draw on a newly-created window. This is the default. --rroooott Draw on the root window. --mmoonnoo If on a color display, pretend we're on a monochrome display. --iinnssttaallll Install a private colormap for the window. --vviissuuaall _v_i_s_u_a_l 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. --ddeellaayy _m_i_c_r_o_s_e_c_o_n_d_s Slow it down. --mmooddee _m_o_d_e The direction in which the image should tend to slide. Legal values are _r_a_n_d_o_m (meaning pick one), _u_p, _l_e_f_t, _r_i_g_h_t, _d_o_w_n, _u_p_l_e_f_t, _d_o_w_n_l_e_f_t, _u_p_r_i_g_h_t, _d_o_w_n_r_i_g_h_t, _s_h_u_f_f_l_e (meaning perfer no particular direction), _i_n (meaning move things toward the center), _o_u_t (meaning move things away from the center), _m_e_l_t (meaning melt straight downward), and _s_t_r_e_t_c_h (meaning stretch the screen downward). RREESSOOUURRCCEESS On some systems (currently, only SGIs), this program can, instead of grabbing a desktop image, grab a frame of video from an external camera and manipulate that instead. The following resources control that. ggrraabbVViiddeeooPPrroobbaabbiilliittyy (Float) What portion of the time to grab video rather than X Version 11 05-Apr-1999 1 XScreenSaver(1) XScreenSaver(1) a screen image, between 0.0 and 1.0. Defaults to 0.5, or half the time. vviiddeeooDDeevviiccee (Integer) The number of the default video input device to check first. If unspecified, the default camera (from videopanel(1)) will be checked first. After that, all other available video input devices will be checked in order. The first one which produces a non-black image will be used. If all images are black, the others will be re-checked a few times before giving up and falling back to simply grabbing a desktop image (but note that this takes a few seconds, so if you don't actually have any video sources hooked up, you should consider turning off video grabbing by setting ggrraabbVViiddeeooPPrroobbaabbiilliittyy to 0.0.) vviiddeeooGGaaiinn (Float) The amount by which to brighten the grabbed image. This defaults to 2.2. EENNVVIIRROONNMMEENNTT DDIISSPPLLAAYY to get the default host and display number. XXEENNVVIIRROONNMMEENNTT to get the name of a resource file that overrides the global resources stored in the RESOURCE_MAN- AGER property. SSEEEE AALLSSOO X(1), xscreensaver(1) CCOOPPYYRRIIGGHHTT Copyright 1992 by Vivek Khera. Permission to use, copy, modify, distribute, and sell this software and its docu- mentation 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 per- mission 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. AAUUTTHHOORR Vivek Khera , 05-Aug-93; based on code by David Wald, 1988. Modified by jwz, 28-Nov-97. Modi- fied by Rick Schultz 05-Apr-1999. X Version 11 05-Apr-1999 2