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Release Digest: GNOME, July 30, 2003

Jul 31, 2003, 05:00 (0 Talkback[s])

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Ninth release of PythonCAD

I'd like to announce the ninth development release of PythonCAD, a CAD package for open-source software users. As the name implies, PythonCAD is written entirely in Python. The goal of this project is to create a fully scriptable drafting program that will match and eventually exceed features found in commercial CAD software. PythonCAD is released under the GNU Public License (GPL).

PythonCAD requires Python 2.2. The interface is GTK 2.0 based, and uses the PyGTK module for interfacing to GTK. The design of PythonCAD is built around the idea of separating the interface from the back end as much as possible. By doing this, it is hoped that both GNOME and KDE interfaces can be added to PythonCAD through usage of the appropriate Python module. Addition of other interfaces will depend on the availability of a Python module for that particular interface and developer interest and action.

The ninth release concentrated on internal improvements to the code. The storage and manipulation of optional values was heavily reworked. The first batch of changes regarding storing various drawing entities was finished, with the handling of colors having the largest number of changes. Linetypes and drawing styles will be updated in a similar manner to colors in future releases. This release also has numerous improvements in handling default values for many of the objects used in PythonCAD.

A large number of bug fixes are included in this release. Various bugs relating to line splitting, tangent point calculation, and line intersection calculation have been fixed. In addition to bug fixes, numerous changes in the code are for data validation and error checking, resulting in several fixes where using improper data types was uncovered. A few changes have been made with regards to saving and loading of files as well.

The ninth release also allows for the setting of the inactive layer entity color. This change is probably the only user interface change present in the release. As was stated above, the vast majority of changes present in this release are deep within the code and not UI related.

Unfortunately the redraw bug in the preference dialog is still present, and when making the eighth release I had hoped to have it eliminated by the time the ninth release went out. That goal was not met, but hope springs eternal and maybe it will be removed in the next release.

The mailing list for the development and use of PythonCAD is available. Visit the following page for information about subscribing and viewing the mailing list archive:

Visit the PythonCAD web site for more information about what PythonCAD does and aims to be:

Come and join me in developing PythonCAD into a world class drafting program!

Art Haas
Man once surrendering his reason, has no remaining guard against absurdities the most monstrous, and like a ship without rudder, is the sport of every wind.

-Thomas Jefferson to James Smith, 1822

GtkGLExt 1.0.2


GtkGLExt 1.0.2


GtkGLExt is an OpenGL extension to GTK. It provides the GDK objects to support OpenGL rendering in GTK, and GtkWidget API add-ons to make GTK+ widgets OpenGL-capable.

This is the minor bugfix release of GtkGLExt-1.0.


  • Added GLX_MESA_agp_offset extension.
  • Some examples uses gtk_timeout instead of gtk_idle for animation. (Dave Andruczyk's advice, Thank you Dave.)


  • Fixed build problem with NVIDIA's OpenGL headers. (reported by Dave Andruczyk)
  • Renamed gdk/GL to gdk/glext to prevent system's GL/gl.h from attempting to include GL/glext.h in gdk directory on build time.


GNOME Software Map entry