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]
18 Lines like crystals grow on a computational substrate. A simple
19 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.
21 Ported from the code by j.tarbell at http://complexification.net
24 accepts the following options:
26 .B \-wireframe (Default: \fIFalse\fP)
27 Don't draw sand-painting colored effects, only make a wireframe.
29 .B \-max\-cycles \fIcyclecount\fP (Default: \fI10000\fP)
30 Maximum number of growth cycles before restarting. The higher this is,
31 the more complex the art.
33 .B \-growth\-delay \fIdelayms\fP (Default: \fI18000\fP)
34 Delay in ms between growth cycles. More delay, slower (but smoother
35 and less CPU intensive)
38 .B \-initial\-cracks \fInuminitial\fP (Default: \fI3\fP)
39 Initial number of cracks in the substrate
41 .B \-max\-cracks \fInummax\fP (Default: \fI100\fP)
42 Maximum number of cracks in the substrate at a single time
44 .B \-sand\-grains \fInumgrains\fP (Default: \fI64\fP)
45 Number of sand grains dropped during coloring. More grains cause
46 a denser colour but use more cpu power.
48 .B \-circle-percent \fIcirclepercent\fP (Default: \fI0\fP)
49 The percentage of the cracks will be circular.
52 Display the current frame rate and CPU load.
57 to get the default host and display number.
60 to get the name of a resource file that overrides the global
61 resources stored in the RESOURCE_MANAGER property.
66 Copyright \(co 2003 by J. Tarbell
67 (complex@complexification.net, http://www.complexification.net).
69 Ported to XScreensaver 2004 by Mike Kershaw (dragorn@kismetwireless.net)
71 J. Tarbell <complex@complexification.net>, Jun-03
73 Mike Kershaw <dragorn@kismetwireless.net>, Oct-04