Paul Obermeier

Private home page with miscellaneous Tcl stuff at http://www.poSoft.de

• Started new project SgiTcl in 2026 to port current Tcl/Tk version to SGI IRIX.
• Member of the Img developer group. Released version 2.1.2 on 2026/09/06.
• Co-organizer of the European Tcl/Tk User Meetings from 2012 - 2022.
• Member of the Tcl'ers User Group Munich
• Initiated the monthly German-speaking virtual Tcl meeting .

Contributions to the Wiki:

Tcl3D related pages:

• Tcl3D : Information page about Tcl3D, the successor to tclogl.
• Tcl3D Discussion : Discussion page about Tcl3D.
• Tcl3D Demo of the Month : Monthly updated page of new Tcl3D demos.
• Simple Chaos Theory with Tcl3D : Implementation of the algorithms published at Simple Chaos Theory with Tcl
• tclogl : A Tcl package wrapping OpenGL functionality for use in Tcl.
• Tetrahedron with tclogl : Sierpinski tetrahedron demo implemented with tclogl
• TclOgl Demo Spheres : A tclogl demo rendering spheres in various modes

Img related pages:

• Creating image photo data from GIF files : Generate a Tcl package contained encoded image data.
• Copy image to and from the Windows clipboard : Test program showing the use of the Twapi and Img extensions to copy photo images to and from the Windows clipboard.
• timedImgViewer : Simple image viewer, showing the time needed for reading and displaying the image.
• poPhotoUtil is a package for image processing with pure Tk commands.
• Reading image type and dimensions : Added proc to detect image type and size of all formats supported by Img.
• Fast image resizing : Image resize procedure in pure Tcl handling alpha values. Needs Tk >= 8.7.

Automation With Tcl:

• BAWT (Build Automation With Tcl) is a Tcl based configurable framework for building C/C++ based software libraries from source code without user interaction. Version 3.3.0 (Tcl 8.6.18 and 9.0.4) released on 2026/07/11.
• CAWT (COM Automation With Tcl) is a utility package based on TWAPI to script Microsoft Windows applications with Tcl via the COM interface. Version 3.1.1 (Tcl9 aware) released on 2025/07/10. Also part of BAWT.
• MAWT (Movie Automation With Tcl) is a Tcl package based on FFmpeg. It provides high level procedures for movie automation with Tcl. Version 0.4.4 (Tcl9 aware) released on 2024/06/13. Also part of BAWT.
• PAWT (Picture Automation With Tcl) is a high-level Tcl interface for handling images with byte, short, int, float or double pixel values. The image data and meta information are stored in a Tcl dict. Version 1.3.0 (Tcl9 aware) released on 2026/03/04. Also part of BAWT.

Tcl9 related pages:

• Porting extensions to Tcl 9 : A summary of my experiences trying to port the Tcl packages or programs supported by BAWT to Tcl 9.
• Tcl 9 functions using Tcl_Size : List of functions using Tcl_Size.

SGI related pages:

• tkButtonFly : Program inspired by SGI's buttonfly. Weekend fun project :-)
• Building Tclkit on IRIX : How to build a Tclkit on SGI IRIX.

Other stuff:

• poSoft utilities: poApps is a collection of nine applications in one Tcl starpack. Version 3.3.0 released on 2026/06/26. Also part of BAWT.
• Helper functions for tclkit and zipkit based starpacks: Module poKit implementing functionality for transparently dealing with tclkits and zipkits.