############################################################################
#
#	File:     blp2grid.icn
#
#	Subject:  Program to convert BLP drawdown to grid image
#
#	Author:   Ralph E. Griswold
#
#	Date:     June 26, 2002
#
############################################################################
#
#  This file is in the public domain.
#
############################################################################
#
#  The following options are supported:
#
#	-s i	size of cells; default 5
#	-c s	color for filling cells; default black
#
#  Also handles row files.
#
############################################################################
#
#  Requires:  Version 9 graphics
#
############################################################################
#
#  Links:  basename, cells, convert, options, patutils, wopen
#
############################################################################

link basename
link cells
link convert
link options
link patutils
link wopen

procedure main(args)
   local rows, panel, input, line, name, opts, size, file, color

   opts := options(args, "s+c:")

   size := \opts["s"] | 5
   color := \opts["c"] | "black"

   while file := get(args) do {
      input := open(file) | stop("*** cannot open pattern file")
      rows := []
      line := read(input) | stop("empty file")
      if upto("#", line) then rows := pat2rows(line)
      else {
         rows := [line]
         while put(rows, read(input))	# read in row pattern
         }
      panel := matrixpanel(rows, size)
      fill_cells(panel, rows, color)
      name := basename(file, ".blp")
      name := basename(name, ".rows")
      WriteImage(panel.window, name || "_grid.gif")
      WClose(panel.window)
      close(input)
      }

end

procedure fill_cells(panel, rows, cellcolor)
   local i, j, color

   every i := 1 to *rows do {
      every j := 1 to *rows[1] do {
         color := if rows[i, j] == "1" then cellcolor else "white"
         colorcell(panel, j, i, color)
         } 
      }

   return

end