X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=local%2Fman%2Fcat.1%2Fcritical.1;fp=local%2Fman%2Fcat.1%2Fcritical.1;h=a28582d6bdf5ee0fb9d2fb9071c7a9035150a497;hb=41fae2ad67bc37e31c4d967bae81e4f3f50fa55a;hp=0000000000000000000000000000000000000000;hpb=278c59e14c53fd412b734e699bd4f314f766f804;p=xscreensaver diff --git a/local/man/cat.1/critical.1 b/local/man/cat.1/critical.1 new file mode 100644 index 00000000..a28582d6 --- /dev/null +++ b/local/man/cat.1/critical.1 @@ -0,0 +1,132 @@ + + + +XScreenSaver(1) XScreenSaver(1) + + +NNAAMMEE + critical - Draw a system showing self-organizing critical- + ity + +SSYYNNOOPPSSIISS + ccrriittiiccaall [-display _h_o_s_t_:_d_i_s_p_l_a_y_._s_c_r_e_e_n] [-foreground + _c_o_l_o_r] [-background _c_o_l_o_r] [-window] [-root] [-mono] + [-install] [-visual _v_i_s_u_a_l] [-delay _s_e_c_o_n_d_s] [-random + _b_o_o_l_e_a_n] [-ncolors _i_n_t] [-offset _i_n_t] + +DDEESSCCRRIIPPTTIIOONN + The _c_r_i_t_i_c_a_l program displays a self-organizing critical + system that gradually emerges from chaos. + + _c_r_i_t_i_c_a_l performs a simulation on a two-dimensional array + of integers. The array is initialized to random values. + On each iteration, it draws a line to the array position + with the greatest value. It then replaces that location + and the eight neighboring locations with randomly-selected + values. + + The lines are initially random, but over time a chaotic + self-organizing system evolves: areas of the screen which + happen to have lower values are less likely to be updated + to new values, and so the line tends to avoid those areas. + Eventually, the histogram of changes approaches the power- + law curve typical of such systems. + + The simplest documented self-organizing system is the one- + dimensional equivalent of _c_r_i_t_i_c_a_l. + + I heard about this algorithm second-hand: apparently there + was an article in _S_c_i_e_n_t_i_f_i_c _A_m_e_r_i_c_a_n describing it some- + time in 1997. + +OOPPTTIIOONNSS + _c_r_i_t_i_c_a_l 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. + + + + +X Version 11 13-Nov-98 1 + + + + + +XScreenSaver(1) XScreenSaver(1) + + + --ddeellaayy _u_s_e_c_s + Number of microseconds to wait after drawing each + line. + + --rraannddoomm _b_o_o_l_e_a_n + Whether to use randomly selected colours rather + than a cycle around the colour wheel. + + --ooffffsseett _i_n_t_e_g_e_r + The maximum random radius increment to use. + + --nnccoolloorrss _i_n_t_e_g_e_r + How many colors should be allocated in the color + ramp (note that this value interacts with _o_f_f_s_e_t.) + +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 + XX(1), xxssccrreeeennssaavveerr(1) xxssccrreeeennssaavveerr--ccoommmmaanndd(1) xxssccrreeeenn-- + ssaavveerr--ddeemmoo(1) + +CCOOPPYYRRIIGGHHTT + Copyright (C) 1998 by Martin Pool. + + 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 pro- + vided "as is" without express or implied warranty. + +AAUUTTHHOORR + Martin Pool , 13-Nov-1998. Based in + part on the XScreenSaver code by Jamie Zawinski + . + + + + + + + + + + + + + + +X Version 11 13-Nov-98 2 + +