Pd-list May 2011

pd-list@lists.iem.at

101 participants
157 discussions

Pd applications for the blind or other disabled
by Stefano Papetti 24 May '11

24 May '11

Hello, I wonder if there exist any examples of applications developed with Pd (from simple patches to externals or libpd-based stuff) aimed at rehabilitation or human-computer interaction for disabled people. I'd be very interested in any examples on this matter. Best, Stefano

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Segmentation Fault when using Gem (possibly due to [pix_chroma_key])
by Antonio Roberts 24 May '11

24 May '11

I'm trying to do a bit of video effects using the attached patch but I'm encountering a segmentation fault. (To use the patch open a directory of video (.mov) files in the [playlist] object, click on one of them then press the bug red start button) The segmentation fault only seems to happen when the video going into the left inlet of [pix_chroma_key] changes, not the right. Can anyone tell me why this is? I'm using pdextended 0.42.5 on Ubuntu 11.04 on a Dell studio 1555 with ATI proprietary drivers (fglrx) Ant

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colorRGB
by Michael Karr 24 May '11

24 May '11

Hi, I am having a problem which is driving me crazy, and it's as stupid as coloring a polygon... I have 8 gemheads, on each I am rendering a different polygon and on the first 3 of the gemheads the color displays properly. Thereafter, whatever I put as RGB value (from the fourth gemhead on), it renders it as one of the previous 3 values, or white. Any suggestions to what it could be? Thanks, Michael

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four PS3 Eye on Mac Pro and Pd-ext and GEM
by jack＠rybn.org 23 May '11

23 May '11

Hello, I'm going to work on a Mac Pro with MacOsX.6.7 and the latest stable Pd-extended 0.42.5. I would like to connect four PS3 Eye on this computer and use GEM with pix_video to read these four devices in four instance of Pd (=> one camera per instance of pd). I will use Macam driver (or something else ?) Is it easy to get each camera working in the same time on this system ? Do you have experience in this area ? Thanx for help. ++ Jack

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Re: [PD] CVs
by Patrice Colet 23 May '11

23 May '11

In fact I'm wondering if pegasus was a representation of something well known in the past europe, like thunder, in some other cultures thunder was certainly represented by dragons. Human brain could have developped a language by using fictional animals to describe physical phenomenons, and this language would have been re-interpreted to something else by the immixtion of different cultures. Two snakes wrapped around a tree could have been how people represented double layer structure in a plasma. Fiction might refer to a reality becoming slightly different each time it passes through the synaptic network of human brain, mostly when parameters are missing for doing the computation. That might be how we come to weird things like dark matter, when ignoring electrical interaction at a galaxy scale well explained by Hannes Alfvén, when he compare a galaxy with homopolar motors. ----- "Bryan Jurish" <jurish(a)uni-potsdam.de> a écrit : > moin Patrice, > > On 2011-05-23 05:09, Patrice Colet wrote: > > We can imagine many different kinds of new animals, some also have > been modelized since a long time through sculptures, > > we know that almost all those weird animals are not and have never > been real. > > To pick a much-overused example, is the sentence "Pegasus is a flying > horse" true or false? Or do we need to ditch the principle of > bivalence? What the heck does "Pegasus" refer to anyways? Clearly, > we > can all parse the sentence and assign it some kind of semantic > interpretation, and no one here is claiming to have actually > perceived > any airborne equines recently, but I think there's more going on here > than can be adequately described by "so-and-so-many synapses in > these-and-those brains dumped so-and-so-many neurotransmitters of > such-and-such a chemical composition into their respective synaptic > gaps > in response to an influx of such-and-such a mean volume of sodium > ions"... to put it bluntly, how `real' is fiction? Maybe that's what > you were getting at in the first place; apologies if I'm beating a > dead > horse, airborne or otherwise ;-) > > marmosets, > Bryan > > -- > Bryan Jurish "There is *always* one more > bug." > jurish(a)uni-potsdam.de -Lubarsky's Law of Cybernetic > Entomology -- Patrice Colet

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Re: [PD] CVs
by Patrice Colet 23 May '11

23 May '11

----- "Chris McCormick" <chris(a)mccormick.cx> a écrit : > On Sun, May 22, 2011 at 01:37:19PM -0400, Mathieu Bouchard wrote: > > On Thu, 19 May 2011, Chris McCormick wrote: > >> On Fri, May 13, 2011 at 12:38:37PM -0400, Mathieu Bouchard wrote: > >>> On Wed, 11 May 2011, Chris McCormick wrote: > >>>> At the very least they exist physically encoded in the brain > chemistry > >>>> of somebody who is thinking about those concepts. Brains are part > of > >>>> physical reality, right? > >>> Yeah, but the map is not the territory. > >> > >> I am not convinced they are different in the case of things that > "we > >> can't perceive ... from the physical world." > > > > All this to be able to cleverly claim « Santa Claus really > exists » with > > a big satisfied grin on your face ? ;) > I'm not being smug. I think it's a mistake that very intelligent > people make in dismissing things that are "just ideas". For some > reason people think that ideas are something independent of the > physical world, but they are not. Ideas physically occupy people's > brains and make people change the world. > Brain thinking could be stimulated by indices that would relate something similar with the idea whenever it exists or not. People that claimed they have discovered licorns used to cut narval's horn to get a proof of their discovery, they were playing with ignorance, it was certainly easier to do that during antic greece, before they used to get rhinoceros horn when african, asian, and indonesian wildlife weren't very popular in europe. They also weren't used to scientific method which is nowadays very famous for determining if something is part of reality. We can imagine many different kinds of new animals, some also have been modelized since a long time through sculptures, we know that almost all those weird animals are not and have never been real.

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Re: [PD] Extended View Toolkit
by news＠petervenus.de 23 May '11

23 May '11

Hello ignacio! the ev_vid.pd abstraction already has an outlet that bangs out different video properties. in order to keep the number of outlets managable we did not just forward the [bang] which is produced by [pix_film] when the end of the file is reached, but rather sending out the message [end( so basically if you want to use the outlet of [ev_vid] to trigger some external processes you could achieve this by using [route end] for example, having route connected to the outlet of [ev_vid] However i discovered a bug in the ev_vid abstraction, that is due to the realtimer part, which manages fluent video-playback even when the computer is under heavy workload. With this mechanism, pix film gets a float number, telling the pix_film object, which frame it has to "play". unfortunately this somehow disables the "bang when end is reached" function. I couldnt find out, why that is, but i fixed it in the abstraction. you will find the fixed abstraction (incl adopted helpfile) attached in this mail. simply replace the ones in your EV_Toolkit directory with the new ones. with this the workflow to get the [end( message would be as described earlier: [ev_vid 0] / [route end] / [bang( feel free to ask if something is not clear. enjoy, peter ------------------------------------------------------------ Von: "Jose Luis Santorcuato" <santorcuato76(a)gmail.com> Gesendet: 21.05.2011 06:19:37 An: "Ignacio Aguirre" <ignacio(a)independiente.cl> Betreff: Re: [PD] Extended View Toolkit Hi, in GEM the object pix_film delivers a bang when the last frame is reproduced, when the movie ends bang to [1 ( and starts the others videos...also you can bang a zero and stop the current movie. Bets regards José 2011/5/20 Ignacio Aguirre <ignacio@independiente.cl[mailto:ignacio@independiente.cl]> Hello all im currently working with EWK (great tool!) for my pre grade thesis. i have a simple question, and hope someone can help me... is there a way to know when the last frame from a video is played? im editing the ev_vid.pd patch, and putting a "print end vid $1" in the last outlet of pix_film (it should send a bang when the movie ends) but im not getting anything. I also try with the [end( message, but still having no results. the idea is when the videos from a group ends, its automatically starts a second group. Thanks for your time guys! hope to let you know soon about mi thesis made with pd and kinect. Hello All! I want to announce the official release of the Extended View Toolkit. http://puredata.info/Members/Weitsicht/extended-view-toolkit/[http://pureda… The Extended View Toolkit is a set of abstractions developed for the art installation "Extended View streamed". It is intended to be an easy solution to experiment and realise panoramic video and complex multiscreen projection environments to createimmersive media experiences. It features a set of abstractions that are able to combine multiple related image-sources (like video input, video playback) into aconsistent panoramic image. The source-material, e.g. the camera to display has to be aligned horicontally, since image-combination is based on simple, openGL basededge-blending and not algorithmic pix by pixel comparison. Furthermore it features abstractions to create multi-screen, multi-projector environments to enable correct representation of (not only)panoramic material. The projection abstractions can be combined to form big screens out of multiple projectors with softedge betweenoverlapping borders of single projectors and contain a vertex model that can be adjusted in 4, respectively 9 points, so that projections onchallenging geometric surfaces is possible. Additionally, all abstractions are controllable via OSC-styled send/receive-messages, which simplifies OSC-based external control. Also, since streaming video was part of the project, a gstreamer based streaming solution was developed by Peter Innerhofer to distribute panoramic/multistream video over network. It can be found here: [https://github.com/peonic/streaming[https://github.com/peonic/streaming]] Libraries needed: mrpeachBuilt with pd 42.6 and GEM 92.3 Credits: Shader Programming/openGL: Cyrille Henry GEM: Marian Weger Prototyping/GEM: Peter Venus Streaming: Peter Innerhofer Initiation/Supervision: Winfried Ritsch A short demo-clip can be found here: [http://vimeo.com/20311051[http://vimeo.com/20311051]] The project was made possible through support from IEM-Institute for Electronic Music and Acoustics (iem.at[http://iem.at]) and CO-ME-DI-A. The CO-ME-DI-A project is supported by the Education, Audiovisual & Culture Executive Agency (EACEA) of the European Comission forthe period 2007 - 2010 ([http://www.comedia.eu.org/][http://www.comedia.eu.org/%5D]). Your feedback is welcome! Peter _______________________________________________ Pd-list@iem.at[mailto:Pd-list@iem.at] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list[http://lists.puredata.info/list… _______________________________________________ Pd-list@iem.at[mailto:Pd-list@iem.at] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list[http://lists.puredata.info/list… -- http://arselectronicachile.blogspot.com[http://arselectronicachile.blogspot… http://comunicacionnativa.blogspot.com/ http://www.myspace.com/santorcuato[http://www.myspace.com/santorcuato]

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[gemdead]
by Mathieu Bouchard 23 May '11

23 May '11

from irc #dataflow : <hellocatfood> Is it possible to use [gemdead] with objects such as [cube] and [sphere] in gridflow? In theory, I said no, but actually, [gemdead] doesn't prevent you from using OpenGL elements, and things like [cube] and [sphere] don't check at all whether they're given a real [gemhead] context, and don't seem to be doing much that is related to it, therefore : [gemhead] | [b] | [gemdead] | [cube] will really draw the cube as if you had done : [gemhead] | [cube] I suspect that very few Gem object classes really depend on an authentic GemState (one that was really created by [gemwin]). When you do find exceptions, please tell me. But you may have to use [gemhead] anyway (as in the above example) as long as [gemwin] decides when to clear the buffer and when to copy the buffer to the screen, just because [gemwin] uses [gemdead] to say when it's the time to draw. _______________________________________________________________________ | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, QC

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Re: [PD] [PD-dev] midiout / sysex on windows
by Georg Werner 22 May '11

22 May '11

Hello, in the abstraction i just compose the message (like martin and cyrille described in the thread) which then gets a bang. what is exactly the problem? you can use it like any other abstraction. put it in the pd path. create [sysexout] in a patch. the left inlet takes the byte values without 240(sysex start) and 247(sysex end) the right inlet is the channel number. i dont know if it works with xp. i hope it helped. g. On 22.05.2011 03:25, Yukihiro Kawada wrote: > hello > > I found your this post. > I want to send sysex by using puredata on windows xp. > I'm trying but I can not work it. > > How can I use your sysexout abstraction? > > Regards, > Thank you. >

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[PD - Announce] Sonoscopie #06 - Signes du temps , Mons (Belgium) - 26 Mai 2011
by Alexandre Lard 22 May '11

22 May '11

Hello list ! I wanted to announce this event to you. This concerns a public presentation of works by the students of an electro-acoustic composition class, in France. 23 people : musicians, directors, visual artists, actors and others Most of the students uses Max-Msp but I'll be proud to show my first real patch in PureData. Entrance is free. If you like electronic music, please feel free to join us. (I'm sorry for the presentation is in french) Heure jeudi 26 mai · 19:00 - 22:00 ------------------------------ Lieu Theatre royal de Mons<http://www.facebook.com/pages/Theatre-royal-de-Mons/139423309460356> Grand-Place Mons, Belgium ------------------------------ ENTRÉE LIBRE ET GRATUITE - INFORMATIONS: +33 (0)3 27 38 01 89 SPECTACLE MULTIMEDIA RÉUNISSANT DES CRÉATIONS MUSICALES, VIDÉO, THÉÂTRALES ET CHORÉGRAPHIQUES UTILISANT LES NOUVELLES TECHNOLOGIES. CES CRÉATIONS SONT ISSUES DES SESSIONS DE COMPOSITION INSTRUMENTALE, ÉLECTROACOUSTIQUE ET MULTIMÉDIA DE ART ZOYD : Compositions de 23 musiciens, vidéastes, plasticiens, auteurs, comédiens… Frédéric Braye, David Bardoux, Nicolo Columbo, Aleksi Fermon, Mathieu Jedrezak, Mathilde Lujan, Philippe Momot, Jacques Pupponi, Claire Payement, Chloé Petitjean, Wiame Haddad, Alexandre Lard, Maxime Pisaneschi, Pauline L’Hotel, Rosa Parlato, Alonso Torres Loayza,Tanguy Fournet, Élodie Ferré, Benoît Duhamel, Anne Festraets, Mitsuaki Satio. http://prev.artzoyd.net/contacts/ Co-production ART ZOYD3 – Gérard Hourbette / CECN - Mons André Serre-Milan, direction artistique Carl Faia, live electronics designer Florent Meunier, ingénieur du son Gérard Hourbette, directeur Monique Vialadieu, administration Charlotte Zisseler, suivi de projets Débutée en octobre 2010, la sixième production des sessions de composition instrumentale et électroacoustique de Art Zoyd livrera ses créations sous forme d’un spectacle multimédia : « SONOSCOPIE #6 – Signes du temps ». Chacune des compositions individuelles propose une approche personnelle à l’image de la diversité de ses auteurs, qu’ils soient musiciens, plasticiens, vidéastes, danseurs ou comédiens. Ce spectacle est un voyage ludique, un dialogue d’idées décliné en un seul mouvement perpétuel sur une heure trente de découvertes musicales, visuelles, scéniques. Une réflexion / proposition sur des supports et pensées compositionnelles d’aujourd’hui. -- Alexandre Lard http://www.alexandrelard.fr http://www.alexandrelard.fr/photographie http://www.alexandrelard.fr/blog CV au format PDF <http://alexandrelard.fr/cv_hiver_2010.pdf>

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Pd-list May 2011