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############################################################################
#
# File: design3.icn
#
# Subject: Program to draw square design
#
# Author: Ralph E. Griswold
#
# Date: February 17, 1995
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program draws a design in which i points around a square are
# all connected to each other. The number of points along a side
# (default 10) and the distance between them (default 40) are given as
# command-line arguments.
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: gobject, joinpair, wopen
#
############################################################################
link gobject
link joinpair
link wopen
procedure main(argl)
local i, j, k, d, extent, points, x, y
i := integer(argl[1]) | 10
d := integer(argl[2]) | 40
extent := i * d
WOpen("label=mandala", "width=" || extent, "height=" || extent) |
stop("*** cannot open window")
points := []
every x := 0 to extent by d do { # x direction, with corners
put(points, Point(x, 0)) # top
put(points, Point(x, extent)) # bottom
}
every y := d to extent - d by d do { # y direction, without corners
put(points, Point(0, y)) # left side
put(points, Point(extent, y)) # right side
}
joinpair(points, points)
Event()
end
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