[PD] purepd atan2~ without expr/externals?
Hi, I'd like to use a signal [atan2~] in a Pd without externals nor [expr~] (i.e. inn RjDj). Does anyone have a purepd implementation of it or maybe a pointer to some math/trigonometric identity/ln-substituion formula for atan2? Ciao -- Frank BarknechtDo You RjDj.me? _ __footils.org__ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] PD t-shirts
all in all about how many tshirts are we talking? my first guess would have been 150 tshirts... but i really cant tell. one should consider that there might be extra tshirts for the us. are there any figures from previous editions? up to now i saw the orange tshirt with black printing on it. i like that. how about including some alternatives for the new shirts? greetings, especially to the people in brazil, have a nice time, max Am 27.07.2009 um 04:34 schrieb Hans-Christoph Steiner: Hey there from Brasil! Yeah, t-shirts would be great, there are many people who want them. They didn't make enough for the conference, so there are probably people here who would also be interested. .hc harris_pil...@gmx.de wrote: hi there, is anybody still into the tshirt thing? i think i could help with the printing. i'm not good at thinking of designs though. bang- until was quite common-sense - afaik there hasnt been lot response on that!? i wanted to bring up the topic again - basically because i want a pd-tshirt too :) cheers Am 06.04.2009 um 06:23 schrieb Hans-Christoph Steiner: I like the DIY way. It would be great if people organized their own fundraisers and bounties. I think that fits in well with the anarchic nature of Pd. There are things like cafepress.com for t-shirts and the like. It is more expensive than doing it yourself, probably, but its easier. It would be nice to see more than one Pd t-shirt available. I'd like bang-until and that cake, for example. .hc On Apr 2, 2009, at 10:38 AM, Ben Baker-Smith wrote: Thanks Kyle, That's much more in line with what I'm looking to do. I also cannot afford to go to PdCon given that it's all the way in Brazil, and I'm sure the majority of Pd users are in the same boat. A documentation bounty seems like a good way to encourage people to document, and give them a way of justifying their time. And, I agree, probably more worthwhile than paying half of one person's ticket to Sao Paulo. In regards to designs, and printing: I'm thinking it might be cheapest (allowing more money to be raised) for me to print the shirts myself.. I just need to come up with a solid price estimate in the next couple days. Also, this seems more in line with the do-it-yourself attitude of Pd than, say, e- mailing a .Gif file to an internet service and letting it all go through them. I have couple designs I've drawn up myself, and a few have been submitted to me via this list. So, hopefully by the end of the weekend, I will upload them to my site and post a link on the list for feedback. -Ben On Thu, Apr 2, 2009 at 1:24 AM, Kyle Klipowicz kylek...@gmail.com wrote: Yes, I agree that the fund should be for a documentation bounty. I think that Ben (or whoever makes the shirts) should hold the money in trust. Perhaps set up an interest-bearing account to save the cash in. Then create a well-documented (pun?) bounty description of what key features are to be implemented and the financial payment for each. You could do micropayments for key help patches or examples, say $20 US each, or a big bounty for larger sections such as re-organizing existing patches into a tidy intro library for new uses, with ready-mades to go. I think this would be a longer lasting value than paying for Pd- con. I'd love to go myself, but probably cannot afford it...but I'd rather see some solid documentation be built...or have the financial incentive to do it! (Not a capitalist, just a hungry belly). ~Kyle On Wed, Apr 1, 2009 at 9:34 AM, Ben Baker-Smith bbakersm...@gmail.com wrote: I'm open to the idea of donating proceeds to PdCon. But, having never been, I have some clarifying questions/concerns. I would really prefer that any money from sales went toward documentation, which in turn will increase useability and make PD more accessible to new users. Does the convention encourage/promote documentation? Is time spent at the convention trying to increase the existing body of literature? If so, then I'm all for it. I just don't want to settle on PdCon if it's only useful to attendees. (of course, I understand that in a good open-source community knowledge gained by any members contributes in some way to the knowledge of the group... but I'm talking more formal documention rather than more answers on the mailing list) Glad to hear the interest. I'm still looking into the best way to go about printing, selling, and distributing. If someone wants to partner up on this I'd be happy for the help and added input. -Ben On Tue, Mar 31, 2009 at 9:46 PM, Alexandre Castonguay acastong...@artengine.ca wrote: Hi Ben, all, We did the last batch of t's as a fundraiser for the Convention in Montréal. We managed to pay for another 1/2 plane ticket with the proceeds :-). Maybe the same could be done for São Paulo? The super folks from Graz sent the file they used for the
Re: [PD] purepd atan2~ without expr/externals?
A way to attack it might be to find a continued fraction form like I did for tanh, about 4 or 5 terms was an adequate approximation. Hi, I'd like to use a signal [atan2~] in a Pd without externals nor [expr~] (i.e. inn RjDj). Does anyone have a purepd implementation of it or maybe a pointer to some math/trigonometric identity/ln-substituion formula for atan2? Ciao -- Frank BarknechtDo You RjDj.me? _ __footils.org__ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] purepd atan2~ without expr/externals?
Here's one I use (atached) cheers Miller On Tue, Jul 28, 2009 at 10:45:09AM +0200, Frank Barknecht wrote: Hi, I'd like to use a signal [atan2~] in a Pd without externals nor [expr~] (i.e. inn RjDj). Does anyone have a purepd implementation of it or maybe a pointer to some math/trigonometric identity/ln-substituion formula for atan2? Ciao -- Frank BarknechtDo You RjDj.me? _ __footils.org__ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list #N canvas 35 0 513 730 10; #X obj 34 36 inlet~; #X obj 84 36 inlet~; #X obj 327 338 *~ 1e+20; #X obj 327 362 clip~ -1 1; #X obj 127 395 *~; #X obj 261 686 outlet~; #X obj 133 85 *~; #X obj 162 85 *~; #X obj 133 108 +~; #X obj 166 137 q8_rsqrt~; #X obj 150 162 *~; #X obj 180 161 *~; #X obj 150 184 *~; #X obj 149 209 *~ -0.5; #X obj 177 187 *~ 1.5; #X obj 149 230 +~; #X text 181 229 inverse modulus to 16 bit precision; #X text 236 136 inverse modulus to 8 bit precision; #X obj 132 275 *~; #X obj 33 275 *~; #X text 160 275 modulus to 16 bit precision; #X obj 83 277 *~; #X obj 400 332 outlet~; #X obj 456 332 outlet~; #X text 404 285 unit complex; #X text 404 299 number out; #X text 37 15 real; #X text 84 13 imaginary; #X obj 238 336 *~ 1e+20; #X obj 238 360 clip~ -1 1; #X obj 80 393 *~; #X obj 94 425 -~; #X obj 60 455 *~; #X obj 33 455 *~; #X text 6 457 d^3; #X obj 62 493 -~; #X obj 79 547 +~; #X text 19 494 d^3-d; #X obj 224 594 *~; #X obj 239 560 *~; #X obj 290 594 *~ 2; #X text 131 411 to 1st quadrant; #X text 128 445 (-1 to 1); #X text 120 430 d = imag-real; #X text 327 594 unfold twice; #X obj 262 642 *~ 0.125; #X obj 133 343 outlet~; #X text 334 653 normalize to (-1 \, 1); #X obj 263 594 -~; #X obj 262 619 -~; #X obj 262 664 +~ 0.5; #X obj 62 517 *~ 0.11; #X text 126 502 fudge to; #X text 126 515 approximate; #X text 125 529 4/pi*arcsin(d/2); #X text 135 359 r out; #X text 318 679 theta/(2pi); #X text 319 694 out; #X connect 0 0 6 0; #X connect 0 0 6 1; #X connect 0 0 19 0; #X connect 1 0 7 0; #X connect 1 0 7 1; #X connect 1 0 21 0; #X connect 2 0 3 0; #X connect 3 0 4 1; #X connect 3 0 39 1; #X connect 3 0 40 0; #X connect 4 0 31 0; #X connect 6 0 8 0; #X connect 7 0 8 1; #X connect 8 0 10 0; #X connect 8 0 18 0; #X connect 8 0 9 0; #X connect 9 0 10 1; #X connect 9 0 11 0; #X connect 9 0 11 1; #X connect 9 0 14 0; #X connect 10 0 12 0; #X connect 11 0 12 1; #X connect 12 0 13 0; #X connect 13 0 15 0; #X connect 14 0 15 1; #X connect 15 0 18 1; #X connect 15 0 19 1; #X connect 15 0 21 1; #X connect 18 0 46 0; #X connect 19 0 22 0; #X connect 19 0 30 0; #X connect 19 0 28 0; #X connect 21 0 2 0; #X connect 21 0 4 0; #X connect 21 0 23 0; #X connect 28 0 29 0; #X connect 29 0 30 1; #X connect 29 0 39 0; #X connect 30 0 31 1; #X connect 31 0 32 1; #X connect 31 0 33 0; #X connect 31 0 32 0; #X connect 31 0 35 1; #X connect 31 0 36 1; #X connect 32 0 33 1; #X connect 33 0 35 0; #X connect 35 0 51 0; #X connect 36 0 38 0; #X connect 38 0 48 0; #X connect 39 0 38 1; #X connect 39 0 48 1; #X connect 40 0 49 1; #X connect 45 0 50 0; #X connect 48 0 49 0; #X connect 49 0 45 0; #X connect 50 0 5 0; #X connect 51 0 36 0; ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Building PD-extended
Yeah, I've seen this two on my jaunty netbook remix netbook. Strange, since the nighlty builds on many machines worked fine. I guess there is something different in the setup of those machines. I'll look when I get a chance. .hc el jay wrote: yes i have tried this.. buit then when i try to build with fakeroot dpkg-deb --build build/ Pd-0.40.3-extended.deb i get given the same error.. and if i touch around some more then i am told that package name was expected but is missing or garabe found 2009/7/27 danomatika danomat...@gmail.com mailto:danomat...@gmail.com On Mon, 2009-07-27 at 04:18 +0200, pd-list-requ...@iem.at mailto:pd-list-requ...@iem.at wrote: hello pd'people! i am trying to install Pd.extened-41.4 on a debian64 sid (unstable) kernel 2.6.30- i have been looking around and the option of installing 32bit with ia32lbs an ---force-architecture gave me libsasound2 problems.. so i found a tutorial that explain how two build from source for 64bits.. i have managed to compile the extended libraries.. and run make install make packages... here everything gives the ok.. and then after compiling for a while it gives me an error saying that i have a problem with DEBIAN/control file on line 9.. in depends field, that i its missing a packages name or that garbage has been found.. when checking this file.. in the place of dependes it says: xterm, ttf-bitsream-vera i dont really understand what the problem is.. can somebody helpme It's probably missing a comma: xterm, ttf-bitsream-vera--- add ',' here. I had the same problem (http://puredata.info/docs/developer/BuildingPdExtended64bitUbuntuIntrepid): If, like me, you get an error similar to this: dpkg-deb: parse error, in file /home/dano/Desktop/pd-build/Pd-0.40.3-extended/packages/linux_make/build//DEBIAN/control near line 8 \package pd-extended: Depends field, syntax error after reference to package zlib1g make: *** deb Error 2 then there is a comma missing after a dependency. Open the Debian control file, look through the dependency list on line 8, and add the missing comma(s) after the referenced package in the error, in this case zlib1g: --- Dan Wilcox danomatika.com http://danomatika.com robotcowboy.com http://www.robotcowboy.com ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Pduino 0.5/Firmata 2.1 beta release
Hi Hans merci mille for the ongoing work on pduino including all the features! finally i could get my hands on for some testing. i did tests with diecimila duemilanueve - pwm looks pretty smooth to control an h-bridge solid state relays. also servos are under my control - smooth operating using the servo firmata. atm no mega at hand for testing but coming soon! so long salutis olsen On Fri, Jul 17, 2009 at 10:17 PM, Hans-Christoph Steinerh...@at.or.at wrote: Hey Alex, Glad to hear it works, but expect problems like the one you mentioned. I just got it working, what it really needs is someone to test and fix things for the Mega in particular. .hc On Fri, 2009-07-17 at 14:48 -0400, Alexandre Castonguay wrote: Hi Hans, I'm pleased to report that it is starting to work on the Mega. I can toggle up to pin 53. Reporting all inputs causes buffer overruns and I guess that's to be expected. More testing underway. Thanks a lot for your work! a Hans-Christoph Steiner a écrit : I haven't had a chance to try it on the Mega yet. Do you use the Mega? If so, I need testers for it. .hc On Jul 10, 2009, at 7:59 AM, Jose Luis Santorcuato wrote: Hans, hi, Arduino mega have 12 inputs, firmata and pduino have these Best regards José 2009/7/10 Hans-Christoph Steiner h...@at.or.at mailto:h...@at.or.at http://at.or.at/hans/pd/objects.html#pduino There are some nice updates to Firmata and Pduino. This release mostly adds extensions to the protocol to support more pin modes and their respective messages (Servo, I2C, Shift Registers, etc). Here are some specifics: - Servo support for StandardFirmata - support for using analog pins as digital I/Os for StandardFirmata - new message to set the poll rate of StandardFirmata - I2C Firmata example (needs Pd implementation) - switch back to 57600 for standard bitrate - made Firmata.begin(57600) explicit in all examples Please test and report and bugs or issues. We are trying to get this included in the upcoming Arduino 0017 release. Depending on the 0017 release schedule, we might be able to squeeze in Shift Register/Matrix support too. Also, just to note, this update includes code from (in alphabetical order): Ayah Bdeir Erik Sjodin Hans-Christoph Steiner Jeff Hoefs Shigeru Kobayashi Zach Lieberman (I hope I didn't forget anyone, let me know if I did). .hc It is convenient to imagine a power beyond us because that means we don't have to examine our own lives., from The Idols of Environmentalism, by Curtis White ___ Pd-list@iem.at mailto:Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- http://www.chilemigra.cl http://arselectronicachile.blogspot.com http://www.myspace.com/santorcuato I spent 33 years and four months in active military service and during that period I spent most of my time as a high class muscle man for Big Business, for Wall Street and the bankers. - General Smedley Butler ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -- ETs DNA will not be televised ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Joke for Pd-con guys
Hi all, For all pd-con guys, a googleearth joke, to remember our great time together. philippe/hp-process PureData-CON 2009 Hostel.kmz Description: application/vnd.google-earth.kmz it's a googleearth link. ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] purepd atan2~ without expr/externals?
There are two approximations here: http://www.dspguru.com/comp.dsp/tricks/alg/fxdatan2.htm a rough implementation is attached. I haven't listened to these yet though, so not sure how they sound. Nick Hi, I'd like to use a signal [atan2~] in a Pd without externals nor [expr~] (i.e. inn RjDj). Does anyone have a purepd implementation of it or maybe a pointer to some math/trigonometric identity/ln-substituion formula for atan2? Ciao -- Frank BarknechtDo You RjDj.me? _ __footils.org__ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list test_atan2-v2.pd Description: Binary data ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] -nogui mistake
Hi all, I was experimenting with pd and inserted the stupid startup flag -nogui. I read a old thread in this list of a member that did the same thing, and runned pd from the shell with pd -noprefs. It worked alright, but now none of the startup libraries are there anymore and I don't remember what the where ;) I'm running pd-exended in Ubuntu, and I tried to remove and reinstall the package but the configurations still remains the same after that... ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] -nogui mistake
Hallo, Caio Barros hat gesagt: // Caio Barros wrote: I was experimenting with pd and inserted the stupid startup flag -nogui. I read a old thread in this list of a member that did the same thing, and runned pd from the shell with pd -noprefs. It worked alright, but now none of the startup libraries are there anymore and I don't remember what the where ;) I'm running pd-exended in Ubuntu, and I tried to remove and reinstall the package but the configurations still remains the same after that... The configuration is in your home directory where it survives reinstallations. Check for these files: ~/.pdsettings and ~/.pdrc and rename them. Ciao -- Frank ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] -nogui mistake
Well I opened it and it looks like this: audioapi: 2 noaudioin: True noaudioout: True audiobuf: 50 rate: 44100 callback: 0 nomidiin: True nomidiout: True npath: 0 standardpath: 1 verbose: 0 loadlib1: Gem nloadlib: 1 defeatrt: 0 flags: -- the Gem is there because is the only one I remembered lol 2009/7/28 Frank Barknecht f...@footils.org Hallo, Caio Barros hat gesagt: // Caio Barros wrote: I was experimenting with pd and inserted the stupid startup flag -nogui. I read a old thread in this list of a member that did the same thing, and runned pd from the shell with pd -noprefs. It worked alright, but now none of the startup libraries are there anymore and I don't remember what the where ;) I'm running pd-exended in Ubuntu, and I tried to remove and reinstall the package but the configurations still remains the same after that... The configuration is in your home directory where it survives reinstallations. Check for these files: ~/.pdsettings and ~/.pdrc and rename them. Ciao -- Frank ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] -nogui mistake
ah now it worked! I just deleted de .pdsettings file e reinstalled the package Thanks! 2009/7/28 Caio Barros caio.bar...@gmail.com Well I opened it and it looks like this: audioapi: 2 noaudioin: True noaudioout: True audiobuf: 50 rate: 44100 callback: 0 nomidiin: True nomidiout: True npath: 0 standardpath: 1 verbose: 0 loadlib1: Gem nloadlib: 1 defeatrt: 0 flags: -- the Gem is there because is the only one I remembered lol 2009/7/28 Frank Barknecht f...@footils.org Hallo, Caio Barros hat gesagt: // Caio Barros wrote: I was experimenting with pd and inserted the stupid startup flag -nogui. I read a old thread in this list of a member that did the same thing, and runned pd from the shell with pd -noprefs. It worked alright, but now none of the startup libraries are there anymore and I don't remember what the where ;) I'm running pd-exended in Ubuntu, and I tried to remove and reinstall the package but the configurations still remains the same after that... The configuration is in your home directory where it survives reinstallations. Check for these files: ~/.pdsettings and ~/.pdrc and rename them. Ciao -- Frank ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] -nogui mistake
Hallo, Caio Barros hat gesagt: // Caio Barros wrote: Well I opened it and it looks like this: audioapi: 2 noaudioin: True noaudioout: True audiobuf: 50 rate: 44100 callback: 0 nomidiin: True nomidiout: True npath: 0 standardpath: 1 verbose: 0 loadlib1: Gem nloadlib: 1 defeatrt: 0 flags: -- the Gem is there because is the only one I remembered lol Just remove the file and pd-extended probably will start with its default settings (I'm guessing, as I don't use pd-ext myself) Ciao -- Frank ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] gem pix shear
so nice . exactly a good starting point for me . simple and efficient. you made it specially for me ? :-) i'm trying to learn some glsl and i am not really fluent in it for the moment. to say the less. but reading your code makes me willing to try things. Thanks py 2009/7/28 marius schebella marius.schebe...@gmail.com Py Fave wrote: Thanks for your help. i would like to output a pix with this transformation,with image wrapping around , so shearXY is not very practical in my situation. i would prefer to avoid using pix_snap too. i need it to be quite fast, working on a live 25 fps 720*576(cropped to square) video feed. any other otions? would a GLSL shader do it ? look at the attached shader, maybe it does what you want? marius. ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] Problems with DIO errors / audio clicking
I'm having problems with DIO errors and glitchy audio with PD-extended 0.41.4 My computer is an HP Compaq nc6000 1.6Ghz laptop with 500mb RAM and I'm running Ubuntu 9.04. The kernel is 2.6.28-13-generic and I've tried using the realtime kernel which is 2.6.28-3-rt but it's no different. I've tried editing /etc/security/limits.conf to include the lines: @audio - rtprio 99 @audio - nice -19 @audio - memlock unlimited but this hasn't helped either. I start jack with qjackctl and my settings are: Realtime, No Memory Lock, Frames/Periods: 1024 sample rate 44100, Periods/Buffer: 2,. Can anyone help? thanks James ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Problems with DIO errors / audio clicking
James Dunn wrote: Can anyone help? probably not. i have had the same problems since i upgraded from hardy. i had more or less periodic clicks/dropouts and erros, especially whith heavy gui activity. (minimizing the gui while recording helped a little) i have given up, and use oss instead of jack now. bis denn! martin ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] gem pix shear
Py Fave wrote:
so nice .
exactly a good starting point for me .
simple and efficient.
you made it specially for me ? :-)
i'm trying to learn some glsl and i am not really fluent in it for the
moment.
to say the less.
but reading your code makes me willing to try things.
hi,
yes, atm I am trying to port shaders to pd and help people get started
with it (it's part of my work for pdcon09, there is more to come...).
here is a version that will make it more clear what is going on. it does
exactly the same thing as the shader I posted before, but splits the
steps and has more comments.
-- snip stripeshear.frag --
// create diamond pattern
// shear (x/y) will change the angle of the diamonds
// offset (x/y) will move pattern left/right/up/down
// resize (x/y) will resize the height/width
// sampler2D is the texture connected in Gem
uniform sampler2D texture;
// the data type vec2 means a vector of 2 floats,
// to set this value from Pd send a list, e.g.
// shear 1.5 -0.7
uniform vec2 shear;
uniform vec2 offset;
uniform vec2 resize;
// take the pixel from position x/y and apply a new location to it
// in the last line texture means the particular pixel
// and texCoord the position where it will be drawn
// the rest is the transformation from the original position to the //
diamond pattern
void main(void)
{
// gl_TexCoord[0].x is the original x position. (a float value)
// gl_TexCoord[0].y the y position.
// to shear the image add an offset based on the x/y position
// and the factor shear.
float x = gl_TexCoord[0].x+gl_TexCoord[0].y*shear.x;
float y = gl_TexCoord[0].y+gl_TexCoord[0].x*shear.y;
// to shift the whole pattern right/left or up down
// add an offset
// to access the values of the vector you can use
// shear.xy (both) or shear.x or shear.y
// shear.s is the same as shear.x and the same as
// shear.r (letters stand for typical vectors: stuv, xyz, rgba)
x = x + offset.x;
y = y + offset.y;
// finally multiply the position offset to change
// the size of x and/or y
x = x*resize.x;
y = y*resize.y;
// this step is not really necessary, but shows
// how to put 2 floats into a vec2
vec2 texCoord = vec2(x,y);
// finally output the result as
// gl_FragColor, which is a built-in glsl function
gl_FragColor = texture2D(texture, texCoord);
}
snip end
marius.
Thanks
py
2009/7/28 marius schebella marius.schebe...@gmail.com
mailto:marius.schebe...@gmail.com
Py Fave wrote:
Thanks for your help.
i would like to output a pix with this transformation,with image
wrapping around ,
so shearXY is not very practical in my situation.
i would prefer to avoid using pix_snap too.
i need it to be quite fast, working on a live 25 fps
720*576(cropped to square) video feed.
any other otions?
would a GLSL shader do it ?
look at the attached shader, maybe it does what you want?
marius.
___
Pd-list@iem.at mailing list
UNSUBSCRIBE and account-management -
http://lists.puredata.info/listinfo/pd-list
[PD] pd problem
Hello, i´m from brazil and i just started the manipulacion in PD. I´m having problems in recording... i used the object 'writesf~ 2' connected with two massage box as 'start' and 'stop'... but nothing happened... so.. can anyone help me?? ifeahouheauea thanks!! ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pd problem
Hallo, Vitor Monaco hat gesagt: // Vitor Monaco wrote: Hello, i?m from brazil and i just started the manipulacion in PD. I?m having problems in recording... i used the object 'writesf~ 2' connected with two massage box as 'start' and 'stop'... but nothing happened... so.. can anyone help me?? ifeahouheauea writesf~ can be pretty ignorant when it is not treated as it expects to be treated. I've been bitten by that many times, too. Most likely you did not open a file prior to recording. It is crucial that you follow the order of commands all the way like writesf~ wants it: 1) open file.wav 2) start 3) stop 4) ... got to 1) again Never skip a step here, then it should work! Ciao -- Frank ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] pd problem
Hello, i?m from brazil and i just started the manipulacion in PD. I?m having problems in recording... i used the object 'writesf~ 2' connected with two massage box as 'start' and 'stop'... aswered to me that the order matter... but didnt worked! its message box or object box to make a open box... and how i know the file will be when the recording finshisd. thanks Vitor 2009/7/28 Frank Barknecht f...@footils.org Hallo, Vitor Monaco hat gesagt: // Vitor Monaco wrote: Hello, i?m from brazil and i just started the manipulacion in PD. I?m having problems in recording... i used the object 'writesf~ 2' connected with two massage box as 'start' and 'stop'... but nothing happened... so.. can anyone help me?? ifeahouheauea writesf~ can be pretty ignorant when it is not treated as it expects to be treated. I've been bitten by that many times, too. Most likely you did not open a file prior to recording. It is crucial that you follow the order of commands all the way like writesf~ wants it: 1) open file.wav 2) start 3) stop 4) ... got to 1) again Never skip a step here, then it should work! Ciao -- Frank ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Problems with DIO errors / audio clicking
James Dunn wrote: I'm having problems with DIO errors and glitchy audio with PD-extended 0.41.4 My computer is an HP Compaq nc6000 1.6Ghz laptop with 500mb RAM and I'm running Ubuntu 9.04. The kernel is 2.6.28-13-generic and I've tried using the realtime kernel which is 2.6.28-3-rt but it's no different. I've tried editing /etc/security/limits.conf to include the lines: @audio - rtprio 99 @audio - nice -19 @audio - memlock unlimited but this hasn't helped either. I start jack with qjackctl and my settings are: Realtime, No Memory Lock, Frames/Periods: 1024 sample rate 44100, Periods/Buffer: 2,. Can anyone help? Check if you have some kind of CPU frequency scaling going on. Ubuntu seems to install one by default. I found that when I force the machine to run at full speed all the time I get no more glitches (well the gui causes dropouts sometimes. I often minimize all the windows and switch to an empty desktop to be safe.) Martin ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Control rate (Was: Sysex out problems)
[drip] is not 'realtime', but i think i have found what i need: [speedlim] from the cyclone library. It just samples the stream at given intervals. I hope it is cpu-economic as well! Andras On Tue, Jul 21, 2009 at 10:40 PM, Andy Farnell padawa...@obiwannabe.co.ukwrote: Pd does not have a control rate as such. All message domain computations happen at audio block boundaries and happen as fast as possible. From the foregoing discussion it may be that some kind of list drip or list sequence operation will help make things smoother. andy On Tue, 21 Jul 2009 19:26:10 +0200 András Murányi muran...@gmail.com wrote: Well i was hoping i wouldn't have to use any kind of timers for that job... [int] followed by [change] do a good and (in terms of cpu) inexpensive job, but to resample my control flow i will need [metro] or [pulse] afaik... if i do that, of course i will not add a [metro] to each knob and envelope but i will set up a central control clock with a single [metro] and then i will feed this to every part that needs to resample control signals. This leads me to the question (i remember it coming up earlier but i cannot find the topic sorry), if i want to basically modify pd's own control rate, is there a more direct/general way to do it? Thanks, Andras 2009/7/19 Alex x37v.a...@gmail.com You could try making it so that you don't send sysex messages on every change.. just poll for changes at a certain rate.. and only sent the most recent change at that rate? -Alex 2009/7/17 András Murányi muran...@gmail.com: [...] Now that i'm trying with a Midisport everything is OK. Another thing was that i was a bit lost in Yamaha's midi spec for the mu100 but i've found it out. ;) However now i see that pd's performace is becoming really waving as i'm tring to pump out more midi data. My old-new questions would be: - Provided that a knob is directly driving a sysex pattern which spits out way more data than necessary, who do i best slow down my data, staying realtime? I guess i shall drop some of it somehow, or i shall kinda resample the datastream. Could you Sirs recommend an economic way to do this? - My machine is a moderate powerhouse (Opteron 148 @2200, 4G), my kernel is rt and audio in pd is off however performance is waving, and my simple sequencer is becoming unstable. What are the crucial points of keeping the patch 'fast', where do you think i generally lose the most cpu? ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] ptl and IanniX
Hi, I've been looking at these two applications for graphical notation via OSC: ptl: D. Henry, “PTL, a new sequencer dedicated to graphical scores,” in Proc. of the 2004 Int. Computer Music Conf, 2004, 738–41. http://dh7.free.fr/otl/PTL_dh20040312.pdf IanniX: T. Coduys and G. Ferry, “IanniX aesthetical/symbolic visualisations for hypermedia composition,” in Proceedings International Conference Sound and Music Computing (SMC’04), 2004. http://www.la-kitchen.fr/download/Papers/PAPER_077.pdf (what in youtube: http://www.youtube.com/watch?v=WvGFtYzJ88s) I suppose their developers or users are on this list, so I was wondering about a couple things. These papers are from the same year, yet I take it they are separate projects. Has this changed at all? How does time work in ptl? I don't have the program, but from one of the images it looks like time flows left-right, triggering the events made by the position of shapes. Any progress in these applications in the last 5 years, or others? cheers, Rich ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] 'kick' in Pd
Hello, I am Vitor Monaco in Sao Paulo - Brazil, I am aware of the pd to a week, some scratching sounds and articulate some schemes. I wonder if someone can give me any tips on how to produce a 'Kick'. grateful, Vitor ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
