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coral.man
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coral.man
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.TH CORAL 6X
.SH NAME
coral \- calculate and display a rising aggregate of particles
.SH SYNOPSIS
.in +8n
.ti -8n
\fIcoral\fR
[-duFR][-w width][-h height][-o filename][-m index][-c colorwheel][-n count][-k duration]
.in -8n
.SH DESCRIPTION
\fIcoral\fR
generates and graphically displays a rising aggregate of particles in
simulation of something like 2-D coral growth.
.SH OPTIONS
.TP 8
-R
Indicates the display will be in the root window. In this mode, the default
color map will be used and no spinning of the color wheel is possible.
.TP
-c \fIn\fP
Selects one of many different color wheels to use. The default color
wheel is a rainbow palette.
.TP
-d
Indicates demo mode. In this mode, the aggregate will be calculated, displayed,
spun, then the program will exit.
.TP
-w \fIn\fP
Specifies the width of the window. Default is 512.
.TP
-h \fIn\fP
Specifies the height of the window. Default is 512.
.TP
-k \fIduration\fP
Specifies the number of points to compute before changing colors.
Default is number of seeds times number of colors.
.TP
-m \fIn\fP
Specifies the minimum color index to be used for the upper end of the color
wheel
.TP
-n \fInumpics\fP
Specifies how many aggregates to compute before exiting. During display
(see NOTES below), pressing 'n' or 'N' will skip to the next map.
.TP
-o \fIfilename\fP
Specifies the output filename to be used. If the -o option is given, this
file will automatically be written out at the completion of the drawing.
If it is not specified, a default filename of coral.ppm is used and only
written if the 'f' or 'F' keys are pressed during a run. The format of the
output file is PPM. The parameters used to calculate the picture are included
as comments at the beginning of the output file.
.TP
-s
Indicates to spin the color wheel immediately upon completion of display.
.TP
-u
Produces a usage message.
.TP
.sp 2
.SH NOTES
.sp
During display, use of the keys
\fI+-dDfFnNSRrswWX?hqQ\fP
indicates:
.sp
.ti 10
(+) Increment minimum color index.
.ti 10
(+) Decrement minimum color index.
.ti 10
(n or N) Skip to the next aggregate.
.ti 10
(s) Spin the color wheel in the positive direction.
.ti 10
(r) Spin the color wheel in the negative direction.
.ti 10
(R or S) Stop color wheel spinning.
.ti 10
(W or w) Increment or decrement the color map index.
.ti 10
(X) Erase current coral growth and start over with new seeds.
.ti 10
(Q or q) quit
.sp 2
.SH AUTHOR
.nf
Ronald Joe Record
The Santa Cruz Operation
P.O. Box 1900
Santa Cruz, CA 95061
rr@ronrecord.com
.fi
.sp 2
.SH ACKNOWLEDGEMENTS
.PP
The algorithm, which uses a modified random walk, was derived
from lectures given by Dietmar Saupe at the University of California at Santa
Cruz. Assistance with colormaps and spinning color wheels and X was gleaned
from Hiram Clawson and Stacey Campbell.