Provided by: contextfree_3.0.5+dfsg1-2.1_amd64
cfdg - image generator based on context-free grammars
cfdg [options] input.cfdg [output.png/svg]
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.
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.
More information can be found on the Context Free website, at http://contextfreeart.org/.
Context Free was written by Chris Coyne, John Horigan and Mark Lentczner. This manual page was written by Bram Senders <firstname.lastname@example.org>, for the Debian project (but may be used by others).