NAME

       cfdg - image generator based on context-free grammars

SYNOPSIS

       cfdg [options] input.cfdg [output.png/svg]

DESCRIPTION

       Context Free is a system that produces images based on context-free grammars.  cfdg is the
       command-line program to generate the actual  images  (in  PNG  or  SVG  format)  from  the
       input.cfdg  file  containing  these grammars.  If - is specified instead of an input file,
       the grammar is read from standard input.  The output filename can be left out  if  the  -o
       option  is  used.  Note that the output mode (PNG or SVG) is not detected depending on the
       specified extension, but must be explicitly set using the -V option.

OPTIONS

       All command-line options consist of a single letter, and an optional argument.  A  summary
       of options supported by cfdg is included below.

       -w width
              Set  width  of  the  output  image  in  pixels  (for  PNG) or millimeters (for SVG)
              (default: 500).

       -h height
              Set height of the output image  in  pixels  (for  PNG)  or  millimeters  (for  SVG)
              (default: 500).

       -s size
              Set  both  width  and height of the output image in pixels (for PNG) or millimeters
              (for SVG) to the same value.

       -s widthxheight
              Set both width and height of the output image in pixels (for  PNG)  or  millimeters
              (for SVG).

       -T size
              Multiply both width and height of the tiled output image by the same amount.

       -T widthxheight
              Multiply both width and height of the tiled output image by the given amounts.

       -m maximum shapes amount
              Set the maximum number of shapes rendered (default: no maximum).

       -x minimum shape size
              Set the minimum size for a shape to be rendered in pixels/mm (default: 0.3).

       -b border size
              Set  the  border  size: -1 for a -8 pixel border, 0 for no border, 1 for an 8 pixel
              border, or 2 for a variable-sized border.

       -v variation code
              Set the variation code (default: random).  This  code  determines  what  the  final
              image will look like when the input contains non-deterministic rules.

       -o filename
              Set  the  output filename.  In this filename, %f is replaced by the animation frame
              number (if any), %v and %V are replaced by the variation code (in  lower  or  upper
              case, respectively), and %% is replaced by a literal %.

       -a num Generate num animation frames at 15 fps (only possible using PNG output).

       -a timexfps
              Generate  time x fps animation frames at the specified fps (only possible using PNG
              output).

       -z     Zoom out during animation, when producing an animation using -a.

       -V     Generate SVG (vector) output.

       -Q     Generate Quicktime movie output (not available in this Debian package).

       -c     Crop image output.

       -q     Quiet mode; suppress non-error output.

       -C     Check the syntax of the cfdg file, then exit.

       -t     Time output; output the time taken to render the cfdg file.

       -?     Show summary of options.

SEE ALSO

       More information can be found on the Context Free website, at http://contextfreeart.org/.

AUTHOR

       Context Free was written by Chris Coyne, John Horigan and Mark Lentczner.

       This manual page was written by Bram Senders <bram@luon.net>, for the Debian project  (but
       may be used by others).