Pd-list December 2007

pd-list@lists.iem.at

129 participants
239 discussions

performance question: connections versus sends
by Daniel Wilcox 19 Dec '07

19 Dec '07

What is "faster" in terms of patch loads and runtime performance, using regular connections or sends? I ask this as I have been developing objects with lots of sends inside of them and I'm wondering if this has any impact on patch performance ... even if I don't use more then half of them? It seems to me that a regular connection has the advantage of not requiring a lookup for the receive... -- Dan Wilcox danomatika www.robotcowboy.com

9 16

new problem with pdp_theonice~
by Jack 19 Dec '07

19 Dec '07

Hello list, hello Yves, Now i get this error : 'reaching end of audio buffer' and then the stream stop here : Streaming status : 1 Number of video frames emitted : 462 Number of video frames dropped : 0 Emission framerate : 14 Audio stream time : 29.5721 Video stream time : 462 (then in the output : reaching end of audio buffer reaching end of audio buffer reaching end of audio buffer reaching end of audio buffer ...) Any idea ? Jack Yves, i'm on the irc giss channel.

1 0

Gem - glutWarpPointer?
by Chris McCormick 19 Dec '07

19 Dec '07

Hi, My dream of writing a quake style shooter in Gem (heh) has been foiled. Apparently neither Gem nor luagl support the glutWarpPointer call which many shooters use to restrict the mouse to the centre of the screen between reads of the mouse pointer movements (so the mouse can't move off the screen). That and the fact that the Gem window sometimes seems to not pick up key presses in full screen mode. Any chance we can add glutWarpPointer to Gem? Any other ideas? Best, Chris. ------------------- http://mccormick.cx

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Tkwidget droptarget?
by Luke Iannini (pd) 18 Dec '07

18 Dec '07

Hi all,Does anyone (hans?) know if Tk has a widget that will accept dropped files from the OS? I'd be happy to look into adding it to the library if anyone thinks it's possible (and points me in a general direction). It would be really great to be able to drag a wav file onto my sampler to load them, and I'm sure there are many other uses as well. (oh, and speaking of that, anyone know anything about adding a "proxy icon" to Pd windows (this would be an OS X only feature, I suppose)? Most OS X apps have one; you can drag from it to get a reference to the file you're working on (e.g. to copy it to the desktop) or right click it (cmd-click in tiger) to open a clickable hierarchy of the folders it's in, a great way to open the containing folder of a patch.) Cheers Luke

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[Fwd: [jitter] the jit-ogre project (aka animated 3D models in jitter)]
by marius schebella 18 Dec '07

18 Dec '07

hi, I know this is max/jitter stuff, but the external is open source, so maybe we can get this to work in GEM, too. It is related to the recent discussion about animated models in gem. marius. -------- Original Message -------- Subject: [jitter] the jit-ogre project (aka animated 3D models in jitter) Date: Tue, 18 Dec 2007 01:59:24 -0700 From: Robert Ramirez <rob(a)robtherich.org> Reply-To: jitter(a)cycling74.com Organization: Cycling '74 To: jitter(a)cycling74.com Hello all. in the spirit of the holidays, i present to you the fruits of my master's thesis labor... The jit-ogre project This project is a jitter external which embeds the functionality of the open source Ogre3D rendering engine, and exposes it to the max environment. What this basically means is you can export models from several 3D modeling applications, with textures/materials and animations, and render them and control them in jitter using hardware buffer acceleration. this is ogre, get to know him: http://www.ogre3d.org the wiki: http://jitogre.org/ SAD TECHNICAL NOTE: This is currently intel-mac only. i apologize. porting to win and ppc is first priority and will hopefully happen before i take my holiday vacation, but please be patient if it doesn't. First, the proof. The link below is a recording of a patch, which utilizes the great jit.boids3D to control 250 animated fish. The fish mesh comes with the ogre3d distribution to use in their samples. http://www.youtube.com/watch?v=QViEumckqkk The second link is a silly short movie demonstrating many of the features of the jit-ogre external (and dedicated to josh goldberg). The ninja mesh is also part of the ogre3d distribution. The music is Tomahawk. http://www.youtube.com/watch?v=97eMB0RHR_8 Now, the question. "How do I take my awesome models I created in [insert your modeler of choice] and animate them with this external?" The answer is, you don't. Just kidding. But seriously, it's not a simple process. I want to emphasize this without sounding condescending, but real time 3D modeling is a highly technical craft that people spend years honing their skills at and make lots of money doing. The reason being, there's a lot of voodoo involved, and its something i know very little about. So it will take you some time to get your model satisfactorily exported if real-time rendering is something you're new at. That being said, it's a relatively straight forward process. And there is only one place where you are going to learn much, the ogre3d artists and content creators forum. http://www.ogre3d.org/phpBB2/viewforum.php?f=8 Please notice the first four topics are all stickys that will be very useful for you to look at. In addition, you will want to go here to find the proper exporter for your modeler of choice. http://www.ogre3d.org/index.php?option=com_content&task=view&id=413&Itemid=… PLEASE NOTE: The maya 8.5 exporter for the mac is broken. I have fixed it and you can download it here: http://jitogre.org/ogreMayaExporter_maya8.5_OSX.zip Lastly, if you really want to know what you're doing with your textures and shaders and such, you will want to familiarize yourself with the ogre material scripts, by reading the manual: http://www.ogre3d.org/docs/manual/manual_14.html#SEC23 So on to the external. I have created some tutorial videos which will hopefully make learning this thing less painful. This is my first project for public consumption, and I have no idea if I have created this in a way that will make sense to others. I hope I have, but you'll see for yourself. here are the links to the vids in the order you should watch them: http://jitogre.org/vids/intro.mov http://jitogre.org/vids/resources.mov http://jitogre.org/vids/materials.mov http://jitogre.org/vids/animation.mov http://jitogre.org/vids/all_else.mov Below is the link to the files you need to install to use this. Please see the above videos and look at the README file for installation instructions. (mac-intel only for now) http://jitogre.org/jit_ogre_mactel.dmg PLEASE NOTE: In case you don't actually want to listen to my raspy voice for 30 mins to learn how to use this, you MUST do the following steps to get this to work: 1. Bang the render context (or just turn on the metro). the window will go black. 2. Send the window to fullscreen (press escape). the ninja should appear. 3. You can now restore the screen size and do whatever you want. you must do these steps every time you initialize the gl context. Also, if you get a message in the max window complaining about "View Matrix not affine" or some such nonsense, reset the jit.gl.handle. RoadMap (aka things that are broke) capture: i have a strategy for this, but i didn't have time to implement it. hopefully it won't be too long to get capture working. this is first priority. multiple texture units: currently, applying a jit.gl.texture to a jit-ogre object, requires a single texture unit. hope to get that fixed to allow for multi-texturing jit.gl.shader: it's possible that this will never work correctly, but if enough people want it... All the bugs that you find and report to me at support _at_ jitogre.org Python / Lua script bindings. Additional SceneManagers and environment rendering (skyboxes, particle systems, paging landscape, terrain, portal zone) My last note. ogre is a beast. he is an incredibly well written, well documented and well supported beast, but he is a beast. also, this is just the tip of the iceberg. I will be open sourcing the entire project (still waiting on my SourceForge project approval) and my hope is that other developers will jump in and add functionality and fix bugs and do things i never thought of. Also, Ogre likes good cards (ATI, NVIDIA). Ogre doesn't like dumb cards (Intel GMA aka the macbook card). he will do his best, but don't expect miracles. Real-time rendering is voodoo, and dealing with different card vendors and drivers and vram and all this stuff tends to be a headache. so much patience is required. have fun. Acknowledgements This project was made possible with the help of several people. Carl Skelton - director of the IDMI program at Brooklyn Polytechnic University. Wes Smith (aka the advisor) Josh Goldberg (aka the instructor) Anton Marini (aka vade) Josh's Advanced Interactive class: Marius, Dan, Jeremy, Meng, David Sen-I (aka the wife) Lastly, the great Ogre3D project, it's creator Steve Streeting, and the entire Ogre community. _______________________________________________ jitter mailing list jitter(a)cycling74.com http://www.cycling74.com/mailman/listinfo/jitter

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Recording question
by tania habib 18 Dec '07

18 Dec '07

Hi List, I have a question regarding a patch that I made for recording multi-channel audio. For the 16 channels, we are using Fireface 800 with an extension board. It works quite well! For a specific application, we are trying to use the two iMic's with a USB plug to record at least 4 channel audio. When I initialize PD and select the audio settings, it shows me two of these seperately in the option, the recording for one works but not for the other! The question is if I can use PD to record simultaneously from two different source from a single patch or somehow get the recording from both! regards, Tania

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Just a single bang
by Branislav Nakic 18 Dec '07

18 Dec '07

Hi list, I'm trying to make an interactive video with pure data (with pdp) but I'm new to this and i need a little hint. I want to make one video start as soon as one finishes and I'm using *select <number_of_frames> *(not sure this is the best way)* *to send the "signal" to another object to play the other video when the first video exceeds its full length in frames. The problem is, it sends multiple bangs (rate of framerate I presume) to *play *object. What do I use to make it bang just once and starts playing the other video? Bane -- _______________________________________ < Ninety percent of everything is crap. > --------------------------------------- \ ^__^ \ (@@)\_______ (____)\ )\/\ ||---------w | || ||

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Help: computer dead + dropouts on hdsp pcmcia card on OsX+pdext
by Joao Miguel Pais 17 Dec '07

17 Dec '07

Hi, two days ago our tour in Portugal began (www.endphase.net), and on the day of the first concert my computer (thinkpad r41) just died on me. When I turn on the power, the led lights up and the computer starts to vibrate, but the screens remains black and doesn't go any further - no bios show, no boot, no nothing. I had 2 questions: - I installed my rme hdsp pcmcia card on a friends OsX (don't know now which one, but I think the latest one), and also pd-ext (latest stable version). Audio worked, but there were constant dropouts that wouldn't disappear (and there seemed to be more dropouts there when there was more audio, and specially more with held sounds). Do you know what might be causing the dropouts, and what could be done for it? - the dead computer turned on already a couple of times, but isn't stable. I suspect it's the motherboard, which could mean it can be trashed. Some other causes could be the hard disk (I'm not sure about this, since the bios splash screen doesn't show up) and the power source. Any hints about this subject as well? Thanks, Joao -- Lugostr. 14 79100 Freiburg i. Br. Deutschland +49 (0)761 7074997 jmmmp(a)arcor.de

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HID on imac with tablet Intuos3
by Joao Miguel Pais 17 Dec '07

17 Dec '07

Hi, in followup to the mail yesterday, I'm trying to use my Intuos3 with pd. But apparently hid doesn't take data from the tablet. It recognises the hardware and its data elements, but doesn't poll any data. Pressing all the options in the help patch and screaming at it doesn't seem to help much. Does anyone has any experience with this setup? Joao -- Lugostr. 14 79100 Freiburg i. Br. Deutschland +49 (0)761 7074997 jmmmp(a)arcor.de

2 1

-nogui question
by Daniel Wilcox 17 Dec '07

17 Dec '07

I was under the impression that starting pd without the gui would take out some of the slow downs assoicated with the gui such as gui object generation. I have some objects in my rc-patches that build the object based on its creation args such as [rc-seq 16 4] makes 16 toggle boxes with 4 beat divisions. Now if I have a bunch of these it slows down the loading of my patch considerably, which I understand ... but it also slows down loading in -nogui mode which I don't. So is -nogui mode doing all of the tk work but just not drawing the window? The main problem is this makes patch loading realllyyy slow on my performance computer, PIII 500. So I'm going to actually rebuild all of the songs using static objects instead of dynamic ones ... which is too bad because the flexibility of the dynamic objects was nice when creating the song initially. So is that my only option for now, or is there some super trick I haven't noticed? -- Dan Wilcox danomatika www.robotcowboy.com

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Pd-list December 2007