Simone Kriglstein just put a website about her ontology visualization tool Knoocks (short for Knowledge Blocks) - for which I did some programming in C# and OpenGL - online.

This years colloquium of the Croatian Society for Geometry and Graphics was held in Velika, near Pozega and the Nature Park Papuk.

This time I also uploaded the slides (pdf, approx. 11 mb) of my presentation about Problems with Hemispherical Projections for Visibility Determination.

After the break there are some photos of the location.

It seems this blog needs a new entry. I therefore upped my doctoral thesis, which is now available in the publication section.

I also moved my diploma thesis to the publication section, which until now had its own entry in the menu.

And I also added information about my paper An extended GPU radiosity solver which I have presented this year at the CGI'09 conference.

On a side note, I also removed some broken links.

I added a paper about Geometry of Arbitrary Light Distributions to the publication section. It's about rendering of light sources with arbitrary light distributions. This way you are not restricted to the standard OpenGL light source types.

And I also uploaded a pdf version of the paper Force Directed Embedding of Hierarchical Cluster Graphs.

The 13th Colloquium was held in Porec this year and I gave a presentation with my colleague Franz Gruber about Images and Mathematics. It was about graphical representation about mathematical concepts.

Breaking with tradition there are no photos of the location this time, instead you can find some images of the presentation after the break. These images where originally made for the book Bilder der Mathematik from Georg Glaeser and Konrad Polthier which will be released in November this year.

From May 12 to May 17 I have attended the ROGICS '08 conference in Mahdia, Tunisia were I gave a talk about drawing of graphs with cluster hierarchies. I added the paper as well as a high resolution screenshot to the publication list.

Here are also some photos which I took in Tunisia.

I have added the paper GPU Radiosity for Triangular Meshes with Support of Normal Mapping and Arbitrary Light Distributions to the publication list. You can find the abstract here and the full paper at the WSCG homepage.

For those of you, who prefer to play games in a browser I added a trimmed-down flash version of the game to the Furry Animals website. The version includes two levels.

Edit: I have added How to Play instructions to the flash webpage.

From September 16 to 20 I have attended the 12th Colloquium of the CSGG in Vukovar. I gave a lecture about Adaptive Mesh Subdivision for Radiosity.

As always here are some photos which I took during my stay.

My paper - which I wrote for an university course - about Cloth Simulation and Rendering is now available for download in the publications section or directly from the Computer Graphics Group of the Technical University Vienna.

During the last couple of days I made some updates to the website. I restructured the menu a little bit, which now should also work with Internet Explorer 7.

A Crazy Furry Animals overview has been added to the games section. Additionally, three papers were added the publications section (formaly known as paper section).

In 1993 Lucas Arts released Sam & Max - Hit the Road and now, after 13 years of waiting, Telltale Games released the first episode Sam & Max - Culture Shock. I already made the mind boggling preorder deal (all 6 episodes) at their website. The game received very good reviews, for example Eurogamer gave a whopping 9 out of 10. Read also the interesting interview with Dave Grossman (one of the designers of Day of the Tentacle) at Gamasutra.

Crazy Furry Animals is a game I have been programming the last couple of months. Graphics and sound were done by Simone Kriglstein. It's an arcade style game which controls can be learned in less than no time ;)

Screenshot from level 3	Screenshot from level 2

For more information check out the new website! A download of a demo version will be available presumably in about three weeks.

Last week I attended the 1st Croatian Conference on Geometry and Graphics organized by the Croatian Society for Constructive Geometry and Computer Graphics. My talk was about shadow volumes with the following outline: Importance of Shadows, Basic Concepts (z-pass, z-fai), Silhouette Detection, Shadow Volume Extrusion (Point Light, Directional Light), Application for Shadow Profile Generation.

Here are some impressions from the trip:

Not much happened at this website during the last months. But I was occupied with different things. One thing was that I finished my shadow volume implementation for a program which calculates shadow profiles. Shadow profiles are used in architecture to determine how much time the surrounding will be in shadow if you build a specific building.

Below are some images from some not so serious examples along with some technical details.