SYNOPSIS

surf [,FILE/]...

DESCRIPTION

surf is a script driven tool to render algebraic curves and surfaces.

The only input needed is the equation of an algebraic curve/surface in everyday mathematical notation. The output is a (series of) color or black and white image(s) in one of several file formats.

surf also provides a C-style command language which helps working out more complicated equations.

The resolution of an image is only bounded by the available memory. Since the image is stored as an array of floats and because some image processing algorithms need a copy of the image, you need at least width*height*12 bytes of virtual memory.

A relevant extension to the image output filename can be automatically provided by either enabling the auto-extension machinery or giving a dummy extension. The auto-extension machinery is disabled by default for backward compatibility, while the implemented dummy extensions are: .xxx, .XXX, .auto-extension, and .automatic-extension.

surf can handle curves/surfaces up to degree 30. The main features include algebraic curves, algebraic surfaces, hyper plane sections, lines on surfaces, multiple curves/surfaces, adaptive anti aliasing and dithering.

OPTIONS

--disable-auto-extension

disable automatic extension for graphic files (default)

--enable-auto-extension

enable automatic extension for graphic files

--clip-to-rectangle x_min y_min x_max y_max

clip images to the specified rectangle

-v, --verbose

verbose operation, print the executed commands (default)

-q, --quiet, --silent

quiet operation, do not print the executed commands

-h, --help

display this help and exit

-V, --version

display version tuple and exit

AUTHORS

Stephan Endrass, Hans Huelf, Ruediger Oertel, Kai Schneider, Ralf Schmitt, Johannes Beigel

COPYRIGHT

Copyright (C) 1997-2015 Johannes Gutenberg-Universitaet Mainz
Copyright (C) 1996-1997 Friedrich Alexander Universitaet Erlangen-Nuernberg