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############################################################################
#
# File: fstarlab.icn
#
# Subject: Program to draw fractal stars
#
# Author: Ralph E. Griswold
#
# Date: May 2, 2001
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# This program draws fractal "stars". For a discussion of fractal
# stars, see
#
# Fractals; Endlessly Repeated Geometrical Figures, Hans Lauwerier,
# Princeton University Press, 1991, pp. 72-77.
#
# and
#
# Geometric and Artistic Graphics; Design Generation with
# Microcomputers, Jean-Paul Delahaye, Macmillan, 1987, pp. 55-63.
#
# The window is square. The window size can be given on the command line,
# default 600.
#
# The present user interface is crude. To see all the fractal stars
# that are provided by default, type
#
# all
#
# from standard input. After each star is drawn, the program waits
# for an event before going on to the next star.
#
# Alternatively, a single star can be drawn by typing its name preceded
# by an equals sign. The names are fstar01 through fstar13. For example,
#
# =fstar09
#
# draws the ninth star.
#
# In future extensions, provision will be made for user-defined stars.
#
############################################################################
#
# Requires: Version 9 graphics
#
############################################################################
#
# Links: drawlab, fstars, fstartbl
#
############################################################################
link drawlab
link fstars
link fstartbl
global size
procedure main(argl)
size := integer(argl[1]) | 600
drawlab(fstar, fstartbl, "fractal stars")
end
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