BeniBela online

16. Feb 2010

There is a new update of my Internettools: It fixes two small bugs that prevented the receiving of cookies without attributes and the creation of http connections over the 8080 port. It also add a global logging which is especially useful for debugging https. In the parser class the pseudo-XPath-expressions can now extract regex-matching data during the evaluation of the expression instead only afterwards like before. (real XPath-expressions does not support it at all)
Furthermore, some news have been moved in the archive and some uncompleted tools on the demo page.

07. Feb 2010

There is now a new demo page listing small program which are useless but demonstrate interesting techniques or show nice films.
Aside from some recategorizated old programs, there are two new ones on this page, both based on lecture exercises and rendering real 3d. The first draws hardware accelerated Single Image (Random Dot) Stereograms. SIRDS are flat pictures containing a 3d scene which you can only see by squinting. The other "Webcam-UCP" program creates traditional red/cyan anaglyphs. Furthermore it tracks the position of the 3d glasses via a webcam and renders the scene in user centered projection.

27. Jan 2010

06. Jan 2010

There are some minor changes in all the packets below, mostly I forgot to disable the unittests (and you probably don't want to have test log results everywhere). And the TreeListView won't flicker anymore on gtk when you scroll horizontally (I'm pretty sure that it also didn't flicker when I uploaded the last version...) and icons in the item tree will be clipped if the column is too short.

31. Dec 2009

And more updates: I merged the three packages with the template based html parser, the auto update and my Wininetwrapper into an Internet Tools-Package and made them platform-independent. (the main change is that the wininet wrapper is now also a Synapse wrapper). This new package requires/contains now my bbutils in which I fixed a crash on 64-Bit. (and probably renamed some functions since the last published version).
Furthermore I uploaded the pasdoc documentation from every (changed so far) package as online documentation and every archive has now a common structure. The root level of the zip contains a single directory named like the zip itself, which contains the data files, the changelog from Mercurial and, if available, the pasdoc documentation for that archive.

28. Dec 2009

So now I switched from Windows 32 bit to Linux 64 bit and need to update all the programs here which were theoretically platform-independent, but apparently didn't really work there.
The TreeListView is now a lot faster in LCL-GTK, because it will cache subsequent input events and draw all changes at once (actually it is a reported lcl bug that there are so many unnecessary events, but joining them is better anyways), and in every item you can now store a 64 bit value instead of a 32-bit value like before. I also changed the included SearchBar to set its size dependent on the currently used font. For both these components I created a Delphi and a Lazarus package, so you can place them on the form during the design time. Furthermore my JAXML parser can now create files in different encodings and \\-escaping works again (it seems I forgot to actually run the unit tests on the last release).

05. Okt 2009

16. Sep 2009

This week I finished and presented my bachelor thesis, so that I have now enough time to update this home page.
Today I added a java script that you can use to perform a Gaussian Elimination on a given matrix. Of course, there are already hundreds of such scripts online, but all of those I found, didn't work for the equations I wanted to solve, because they assumed that the matrix is quadratic and contains elements of a field instead of a ring. And most of them don't let you choose the order in which the operations are performed or allow neither import nor export of data. The only problem with my script is that java script is always a little bit slow, but anyways you don't solve equations with dozen variables step-by-step. And it seems that no one downloads anything in the web2.0 era.
An interesting fact I noticed while implementing this is that you can consider the Euclidean algorithm for finding the gcd as a special case of the Gaussian Elimination on a 2x1-matrix of integers.

15. Apr 2009

There is now a new program: Sun-Simulator which changes the brightness and shade of color of the monitor during the day and year, so that its light matches the sunlight.
Additional I wrote a diagram component for Lazarus which shows float points in multiple ways. It is based on a model/view system (because I use qt a lot at the moment) which can be used to create interesting effects very easily. E.g.: you can synchronize the data points across different windows and add some other points in one of them at the same time.

09. Apr 2009

A problem with writing open-source software is that you often receive patches which are completely useless, because they consists to 95 percent of changed whitespace. Therefore I wrote the command line tool Simplifydiff that removes all unnecessary data.
And all entries in the guestbook which are spam according to the heuristic are now removed without a backup. So far I received a copy as mail, but since the last thousand entries were really spam, this seems to be useless. (Actually the spam entries are also completely useless, because the guestbook has set the flags noindex, nofollow since the beginning!)

01. Mar 2009

Some time ago I started to write texts and even a book in LaTeX. Therefore I searched a platform-independent, open-source editor, and found only Texmaker.
But since he has some bugs, I created some small patches, which got bigger and bigger, until they finally lead to the fork TexMakerX (on Sourceforge). The most important features I added are, interactive spell checking, code folding and a text analysis.
On this web page I only updated the overview text below and corrected the date of the last news from 18.Okt to 27.Nov. (version control systems are really useful...) (correction: The date of the VCS was wrong, but my CMS got it right).