| 1 | .TH XScreenSaver 1 "12-Jun-97" "X Version 11" |
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| 2 | .SH NAME |
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| 3 | halo - draw circular patterns |
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| 4 | .SH SYNOPSIS |
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| 5 | .B halo |
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| 6 | [\-display \fIhost:display.screen\fP] [\-foreground \fIcolor\fP] [\-background \fIcolor\fP] [\-window] [\-root] [\-mono] [\-install] [\-visual \fIvisual\fP] [\-count \fIint\fP] [\-delay \fIusecs\fP] [\-mode seuss | ramp | random ] [\-animate] [\-colors \fIinteger\fP] [\-cycle] [\-no\-cycle] [\-cycle\-delay \fIusecs\fP] |
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| 7 | .SH DESCRIPTION |
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| 8 | The \fIhalo\fP program draws cool patterns based on circles. |
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| 9 | .SH OPTIONS |
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| 10 | .I halo |
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| 11 | accepts the following options: |
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| 12 | .TP 8 |
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| 13 | .B \-window |
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| 14 | Draw on a newly-created window. This is the default. |
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| 15 | .TP 8 |
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| 16 | .B \-root |
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| 17 | Draw on the root window. |
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| 18 | .TP 8 |
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| 19 | .B \-mono |
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| 20 | If on a color display, pretend we're on a monochrome display. |
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| 21 | .TP 8 |
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| 22 | .B \-install |
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| 23 | Install a private colormap for the window. |
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| 24 | .TP 8 |
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| 25 | .B \-visual \fIvisual\fP |
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| 26 | Specify which visual to use. Legal values are the name of a visual class, |
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| 27 | or the id number (decimal or hex) of a specific visual. |
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| 28 | .TP 8 |
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| 29 | .B \-count \fIinteger\fP |
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| 30 | How many circles to draw. Default 0, meaning random. |
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| 31 | .TP 8 |
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| 32 | .B \-mode "seuss | ramp | random" |
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| 33 | In \fIseuss\fP mode, alternating striped curves will be drawn. |
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| 34 | |
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| 35 | In \fIramp\fP mode, a color ramp will be drawn. |
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| 36 | |
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| 37 | \fIrandom\fP means pick the mode randomly. |
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| 38 | .TP 8 |
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| 39 | .B \-delay \fImicroseconds\fP |
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| 40 | How much of a delay should be introduced between steps of the animation. |
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| 41 | Default 100000, or about 0.1 second. |
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| 42 | .TP 8 |
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| 43 | .B \-colors \fIinteger\fP |
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| 44 | How many colors to use. Default 100. |
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| 45 | .TP 8 |
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| 46 | .B \-animate |
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| 47 | If specified, then the centerpoints of the circles will bounce around. |
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| 48 | Otherwise, the circles will be drawn once, erased, and a new set of |
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| 49 | circles will be drawn. |
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| 50 | .TP 8 |
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| 51 | .B \-cycle |
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| 52 | .TP 8 |
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| 53 | .B \-no\-cycle |
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| 54 | Whether to do colormap cycling. Default is to cycle. |
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| 55 | .TP 8 |
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| 56 | .B \-cycle\-delay |
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| 57 | Number of microseconds between shifts of the colormap; default 100000, |
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| 58 | or 1/10th second. |
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| 59 | .SH ENVIRONMENT |
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| 60 | .PP |
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| 61 | .TP 8 |
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| 62 | .B DISPLAY |
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| 63 | to get the default host and display number. |
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| 64 | .TP 8 |
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| 65 | .B XENVIRONMENT |
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| 66 | to get the name of a resource file that overrides the global resources |
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| 67 | stored in the RESOURCE_MANAGER property. |
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| 68 | .SH SEE ALSO |
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| 69 | .BR X (1), |
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| 70 | .BR xscreensaver (1) |
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| 71 | .SH COPYRIGHT |
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| 72 | Copyright \(co 1993 by Jamie Zawinski. Permission to use, copy, modify, |
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| 73 | distribute, and sell this software and its documentation for any purpose is |
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| 74 | hereby granted without fee, provided that the above copyright notice appear |
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| 75 | in all copies and that both that copyright notice and this permission notice |
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| 76 | appear in supporting documentation. No representations are made about the |
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| 77 | suitability of this software for any purpose. It is provided "as is" without |
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| 78 | express or implied warranty. |
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| 79 | .SH AUTHOR |
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| 80 | Jamie Zawinski <jwz@jwz.org>, 6-jul-93. |
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