INFOSTUKA PROCESSING

SUBMIT! Festival Calls & Competitions

vera — Thu, 22 May 2008 02:27:00 PDT

Under the roof of our video platform SENDUNG.net, we have started the new blog SUBMIT! for festival calls for entries, competitions and scholarships in art, design, film, media art and architecture.

Subscribe to the categories you want to keep posted on by RSS to keep up with recent calls and competitions. Our Google Calendars remind you of each and every deadline a week before itÂ´s due.

If you want to help us feeding this nice little project, please forward interesting announcements to submit [at] sendung [dot] net

link: http://submit.sendung.net

java 1.6 jogl issues on mac os x

marcus — Wed, 30 Apr 2008 02:48:00 PDT

after apple released java 1.6 for mac os x today to the public i got curious to see how my processing (v0135) sketches/apps worked with the new version. unfortunately once you switch to 1.6 in your java preferences, processings opengl throws java.lang.UnsatisfiedLinkErrors after messing around with it for a while i discovered that you had to upgrade to the latest nightly jogl build to make it work...

until the processing team releases a fixed version use this updated library to solve your mac p5/opengl issues. (simply replace the old opengl folder in your ./Processing 0135/libraries/ directory) » opengl-mac-java1.6-fix.zip

patashnik a+b

marcus — Sun, 06 Apr 2008 02:06:00 PDT

This piece will be performed at the Rundgang 08 exhibition at the school of Art & Design, Kassel. Follow this link » to see other works of this exhibition.

patashnik a/b is an audio/visual live drawing performance. The two parts of the piece tell a story about an uncertain voyage into space. Without any prepared video material the story is told in figurative images and abstract visuals, combined with a soundtrack of granulated field recordings and electronic music tracks.

All images and animations are created live on a graphics tablet with our completely rewritten animation software NervousInk3. We're working on a public version, which will be available soon for Mac/ Windows.

» Photos: setup set, show set

» Videos: patashnik a/b trailer, patashnik a/b - full length recording

by Vera-Maria Glahn and Marcus Wendt

Many thanks to:
Matthias Siegert, Host & Curator
Fluctuating Images, Gallery/ Location
Myriam Kunz, Photographer

The "Loop" animation effect is partly inspired by Golan Levin's Yellowtail (1998).

This piece will be performed at the Rundgang 08 exhibition at the school of Art & Design, Kassel. Follow this link » to see other works of this exhibition.

liquids

marcus — Fri, 04 Apr 2008 14:20:00 PDT

when i saw the fountain a while ago, i was stunned by the amazing liquid effects photography chris parks did for their surreal space backgrounds and since then wanted to get my head around the dynamics in these systems.
now having finished our patashnik piece (will be blogging about it soon) i had some time to get into that subject. but before going directly to the code i got hands on ... with ink, olive oil, washing detergent, soy sauce. here's what i got out of it after playing with it for a few hours.
» "liquids" on flickr.

its definitively amazing for me because normally i'd spend three months writing code before seeing a single image thats close to one of these photos. not exactly what you'd call "agile" ...

however speaking about code =)
i currently see two strategies to simulate this "liquid effect" in code:
a) do all the calculations for the complete area/ volume of the liquid. this is the traditional approach and has been implemented a number of times. however since your calculation costs increase exponentially with increasing resolution, it is impossible to generate hd images/ animations in realtime using this method, which is what i'm aiming for.
(i wrote a GLSL GPU-feedback based implementation a while ago, which works fine, even at higher resolutions, but is difficult to combine with other physical forces/ particle effects)

b) another approach i'm currently pursuing is simulating the fluid with a very large particle system where each particle varies in size to cover the complete area, therefore i'm currently rewriting/ optimizing my particle system to use multiple worker threads and improved opengl performance tricks (display lists, point sprites etc). that way i can now simulate 40.000 particles at 125 fps on my macbook pro â in java!

lets see where this goes...

by the way; the very talented maxim zhestkov also makes use of liquid effects in his latest video installation â very nice!

Drawing Tablet Library For Processing

marcus — Tue, 18 Mar 2008 07:08:00 PDT

libTablet aims at becoming a (cross-platform) Java drawing tablet library that plays nice with Processing. It gives you easy access to your tablets pressure, tilt and rotational data in your sketches/ Java applications.

Since my most immediate requirement currently is to have it working on Mac OS X, it is yet not really cross-platform. However the plan is to wrap JTablet on Windows to provide a common interface for easier development/ deployment across these systems.

Releases

version 0.1

first draft, mac os x only
» Tablet-0.1.zip

Source

You can get the latest version via mercurial with:

hg clone http://hg.infostuka.org/hg/libTablet/

Useage

Simply create a PTablet object before you initialize your sketch, which you can then use to query your tablet for: pressure, tiltX, tiltY, rotation etc.

import processing.opengl.*;
import infostuka.lib.tablet.p5.*;

PTablet tablet;

void setup ()
{
 // ATTENTION - new PTablet() HAS to be created before calling size()
 tablet = new PTablet(this);
 size(800, 600, OPENGL);
}

void draw ()
{
 if (mousePressed) {
 float brushSize = tablet.pressure * 100f;
 System.out.println("TILT " + tablet.tiltX + " " + tablet.tiltY + " ROT " + tablet.rotation + " THETA " + theta);
 ...
 your drawing commands here
 ...
 }
}

License

Permalink

http://www.infostuka.org/opensource/tablet-library-for-processing

spherical linear interpolation on a circle

marcus — Mon, 03 Mar 2008 10:23:00 PST

how to do a slerp with angles?
that caused me some headache this morning. however, the solution is blatantly simple.
» example sketch


float angleSlerp(float cur, float to, float delta)
{
 if(cur < -HALF_PI && to > HALF_PI) {
 cur += TWO_PI;
 } else if(cur > HALF_PI && to < -HALF_PI) { 
 cur -= TWO_PI;
 }
 return cur * (1-delta) + to*delta;
}

characteristics of an 'intelligent crowd'

marcus — Thu, 14 Feb 2008 08:25:00 PST

1. diversity of opinion

each person should have some private information, even if thats just an excentric interpretation of the known facts

2. independence

people’s opinions are not determined by those around them

3. decentralization

people are able to specialize and draw on local knowledge

4. aggregation

some mechanism exists for turning private judgments into a collective decision

‘the wisdom of crowds’ by james surowiecki (p. 10)

Gestures On Sound

marcus — Mon, 28 Jan 2008 23:48:00 PST

An older piece, i'm going to revisit with Vera soon for an upcoming performance in Stuttgart

Still loving the music Arran had put together ....

Rhythmus 21

marcus — Thu, 17 Jan 2008 09:39:00 PST

by Hans Richter 1921(!)
via YWFT

Particle Typography #2

marcus — Tue, 13 Nov 2007 15:34:00 PST

Concept/ Design/ Animation: Marcus Wendt

Sound Design: Philipp Teister

Compositing/ Visual Tweaks: Martin BÃ¶ttger

The festival starts tomorrow and the trailer for our audio/visual concert lounge just got finished, hurrah!

I’ll post some more complete documentation when i recovered from this. There are still a few ambient animated particle wallpaper videos waiting to be rendered …

Supercollider 3.1

marcus — Mon, 05 Nov 2007 02:59:00 PST

Hooray! I just noticed my audio-programming language of choice recieved has significant up date in the last days. You can download it here

SuperCollider is an environment and programming language for real time audio synthesis and algorithmic composition. It provides an interpreted object-oriented language which functions as a network client to a state of the art, realtime sound synthesis server.

SuperCollider was written by James McCartney (audiosynth.com) over a period of many years. It is now an open source GPL’d project maintained and developed by James and various others. It is used by musicians, scientists, and artists working with sound.

Dokfest 2007 - program online

vera — Sun, 04 Nov 2007 13:21:00 PST

IÂ´ve been a bit absent during the last days, and the reason was my involvement with the Kassel Documentary Film and Video Festival, which will happen Nov 13-18! Now the program is finally online ! Besides documentaries and experimental films, the program features the exhibition MONITORING, showing installative video and media art works, and a range of audiovisual performances, for which Marcus and me where part of the selection team.

Curated from about 100 submission, Dokfest presents 4 nights of experimental concerts between performative art and club culture by German and international artists. To give you a taste here’s the lineup with some links to sites and videos. Find a professionals accreditation form here

Wed, Nov 14

Protocol I by dextro.org and Martijn Tellinga (Vienna / Amsterdam) Aviorama by MFO and Repeatbeat (Leipzig)

Thu, Nov 15

DOT and Minimalismus by xx+xy visuals with Ziv Jacob / and and Jean Marc Caimi (Rome)
Insomniac City (Screening) by Ran Slavin (Tel Aviv)
“2d.dual” by Marie Basten, Fabian Valentin. DJ: Pat Kramer (Kassel)

Fri, Nov 16

CV_TV by Siegert & Kysela (Stuttgart)
hammerhaus by Theinert & Hanfreich (Stuttgart)
Shiftpitcher (Dresden) and Tabledance Soundsystem: Roger Berkeley & Jerksta with MC Mezcla (GÃ¶ttingen) and Rodyho (Hamburg)

Sat, Nov 17

Turntable Improvisations by dj sniff (Amsterdam)
Fraumitmuskeln with Christof Lutz and Sebastian Stamm (Kassel)
M.i.t.c.h. (Rotterdam)

Particle Typography (Sketches)

marcus — Wed, 17 Oct 2007 08:34:00 PDT

Recently i have been sketching a typographic design with a new particle system. I have been commissioned by the 24th Kassel Documentary Film and Video Festival to create the identity for their Audiovisual Performance lounge to be held in November. The idea is to use a generative design across different media; posters, flyers, motion graphics and an interactive wallpaper for the specific location. Black and white typographic layouts are converted into flow fields which influence the particles. We hope this generative identity will reflect the procedural nature of many of the invited artists work. Vera will keep you posted.

See the sketches on Flickr: TypeOne TypeTwo TypeTwoOne

libCollada 0.2 released

marcus — Sat, 22 Sep 2007 01:35:00 PDT

libCollada now does colors!

the library is getting nearer to being actually useful. it now creates new collada materials and effects for you as needed without writing a line of extra code.

» project page
» download collada-0.2.zip

Flat hunting in London

marcus — Mon, 17 Sep 2007 03:00:00 PDT

Sorry for being a bit off-topic.

Dearest readers,

i'll be moving to London shortly to start working on a few freelance projects during the next months and would love to share a flat with other friendly creatives. Therefore i'm looking for a nice & reasonable priced room in the Shoreditch/ Hoxton Sq/ Victoria Park/ Bethnal Green area. Looking to move in ASAP.

I'm social/ friendly/ tidy/ dedicated/ up for a drink/ able to import good german beer as well as able to prepare great Wiener Schnitzel and other good food.

Let me know if you have or know of a nice place - please contact me via einbekannterfernsehstar [at] gmail * com

Thank you.
Marcus