Version 0.xx

License Information

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

See INSTALL for information on how to install g2 see the html documentation in the doc/ subdirectory for a function reference

What is g2 ?

Short version (if you are in hurry):

2D graphic library
Simple to use
Supports several types of output devices (currently X11, gd (PNG, JPEG), PostScript)
Concept allows easy implementation of new device types
Virtual devices allow to send output simultaneously to several devices
User definable coordinate system
Written in ANSI-C
Tested under Digital Unix, AIX, Linux, VMS and Windows NT
Fortran interface

Long version:

g2 is a simple to use graphics library for 2D graphical applications written in Ansi-C. This library provides a comprehensive set of functions for simultaneous generation of graphical output on different types of devices. Presently, following devices are currently supported by g2: X11, gd (PNG, JPEG), PostScript (xfig and Win32 are in developement). One major feature of the g2_library is the concept of virtual devices. An arbitrary number of physical devices (such as PNG, or X11) can be grouped to create a so-called virtual device. Commands sent to such a virtual devices will automatically issued to all attached physical devices. This allows for example simultaneous output to a PNG file and a Postscript file. A virtual device in turn can be attached to another virtual device, allowing to construct trees of devices. Virtual devices can also be useful when using different user-coordinate systems. E.g. one X11 window showing an overview of a graphical output, and a second window showing a zoom of a more detailed area of the graphic. Drawing in both windows is performed by one single command to the virtual device.

                                   /-------> PNG:   g2_attach(id_PNG,... 
            ----------------------- 
g2_plot---> | Virtual device: id |--------> X11:   g2_attach(id_X11,...
            -----------------------
                                   \-------> PS:    g2_attach(id_PS,...

If you don't need or like the concept of virtual devices, simply ignore it.

CONTACT

You can contact the authors and contributors by e-mail (/ is @ and - is .):

Ljubomir Milanovic                      ljubo/users-sourceforge-net
Horst Wagner                            wagner/users-sourceforge-net

Tijs Michels (spline implementation) tijs/vimec-nl

or visit g2 home page on:

http://g2.sourceforge.net/