1 .TH Substrate 1 "08-Oct-04" "X Version 11"
3 substrate - Grow crystal-like lines on a computational substrate
6 [\-display \fIhost:display.screen\fP]
7 [\-foreground \fIcolor\fP]
8 [\-background \fIcolor\fP]
10 [\-max\-cycles \fIcyclecount\fP]
11 [\-growth\-delay \fIdelayms\fP]
12 [\-initial\-cracks \fInuminitial\fP]
13 [\-max\-cracks \fInummax\fP]
14 [\-sand\-grains \fInumgrains\fP]
15 [\-circle\-percent \fIcirclepercent\fP]
17 Lines like crystals grow on a computational substrate. A simple
18 perpendicular growth rule creates intricate city-like structures. Optionally, cracks may also be circular, producing a cityscape more familiar to places for which city planning is a distant, theoretical concern.
20 Ported from the code by j.tarbell at http://complexification.net
23 accepts the following options:
25 .B \-wireframe (Default: \fIFalse\fP)
26 Don't draw sand-painting colored effects, only make a wireframe.
28 .B \-max\-cycles \fIcyclecount\fP (Default: \fI10000\fP)
29 Maximum number of growth cycles before restarting. The higher this is,
30 the more complex the art.
32 .B \-growth\-delay \fIdelayms\fP (Default: \fI18000\fP)
33 Delay in ms between growth cycles. More delay, slower (but smoother
34 and less CPU intensive)
37 .B \-initial\-cracks \fInuminitial\fP (Default: \fI3\fP)
38 Initial number of cracks in the substrate
40 .B \-max\-cracks \fInummax\fP (Default: \fI100\fP)
41 Maximum number of cracks in the substrate at a single time
43 .B \-sand\-grains \fInumgrains\fP (Default: \fI64\fP)
44 Number of sand grains dropped during coloring. More grains cause
45 a denser colour but use more cpu power.
47 .B \-circle-percent \fIcirclepercent\fP (Default: \fI0\fP)
48 The percentage of the cracks will be circular.
53 to get the default host and display number.
56 to get the name of a resource file that overrides the global
57 resources stored in the RESOURCE_MANAGER property.
62 Copyright \(co 2003 by J. Tarbell
63 (complex@complexification.net, http://www.complexification.net).
65 Ported to XScreensaver 2004 by Mike Kershaw (dragorn@kismetwireless.net)
67 J. Tarbell <complex@complexification.net>, Jun-03
69 Mike Kershaw <dragorn@kismetwireless.net>, Oct-04