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/--svg option.

OPTIONS

       All command-line options consist of a single letter, and an optional argument. Longer "GNU-style" options
       exist as well. A summary of options supported by cfdg is included below.

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

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

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

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

       -T SIZE, --tile=SIZE
              Multiply both width and height of the tiled output image by the same amount.

       -T WIDTHxHEIGHT, --tile=WIDTHxHEIGHT
              Multiply both width and height of the tiled output image by the given amounts.

       -m MAXSHAPES, --maxshapes=MAXSHAPES
              Set the maximum number of shapes rendered (default: no maximum).

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

       -b BORDERSIZE, --bordersize=BORDERSIZE
              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, --variation=VARIATION
              Set the variation code (default: random).  This code determines what the  final  image  will  look
              like when the input contains non-deterministic rules.

       -DNAME=VALUE
              Declare  a  variable, configuration, or function. Any declaration that can be made at global scope
              can be entered at the command line with  this  option.  Command  line  declarations  override  any
              global-scope  declarations  in  the cfdg file with the same name.  Note that function declarations
              require a space-delimited type identifier in front, so quotes would be required to force the shell
              to group the function declaration parts as one entity.

       -o NAMETEMPLATE, --outputtemplate=NAMETEMPLATE
              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, --animate=NUM
              Generate NUM animation frames at 15 fps (only possible using PNG output).

       -a TIMExFPS, --animate=TIMExFPS
              Generate TIME x FPS animation frames at the specified fps (only possible using PNG output).

       -f FRAME, --frame=FRAME
              Generate animation FRAME only (only possible using PNG output).

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

       -V, --svg
              Generate SVG (vector) output.

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

       --prores
              Generate  Quicktime  movie output using the ProRes codec instead of the H.264 codec (not available
              in this Debian package).

       -c, --crop
              Crop image output.

       -q, --quiet
              Quiet mode; suppress non-error output.

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

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

       -d, --cleanup
              Delete old temporary file.

       -P, --paramdebug
              Enable debug mode to test if all parameter blocks are deallocated.

       -?, --help
              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).