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Diffstat (limited to 'ipl/gprogs/rstarlab.icn')
| -rw-r--r-- | ipl/gprogs/rstarlab.icn | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/ipl/gprogs/rstarlab.icn b/ipl/gprogs/rstarlab.icn new file mode 100644 index 0000000..c27b7bf --- /dev/null +++ b/ipl/gprogs/rstarlab.icn @@ -0,0 +1,64 @@ +############################################################################ +# +# File: rstarlab.icn +# +# Subject: Program to draw regular stars +# +# Author: Ralph E. Griswold +# +# Date: May 2, 2001 +# +############################################################################ +# +# This file is in the public domain. +# +############################################################################ +# +# This program draws regular stars. See +# +# Geometric and Artistic Graphics; Design Generation with +# Microcomputers, Jean-Paul Delahaye, Macmillan, 1987, pp. 5-7. +# +# 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 regular 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 rstar01 through rstar06. For example, +# +# =rstar02 +# +# draws the second star. +# +# In future extensions, provision will be made for user-defined stars. +# +############################################################################ +# +# Requires: Version 9 graphics +# +############################################################################ +# +# Links: drawlab, rstars, rstartbl +# +############################################################################ + +link drawlab +link rstars +link rstartbl + +global size + +procedure main(argl) + + size := integer(argl[1]) | 600 + + drawlab(rstar, rstartbl, "regular stars") + +end |