Pd-list March 2004

pd-list@lists.iem.at

158 participants
381 discussions

Re: [PD] Good PD programming practice?
by Hans-Christoph Steiner 25 Mar '04

25 Mar '04

One area that patcher languages really do well in is rapid prototyping. With Pd you can whip out a working prototype really quickly, but they generally it'll be really whack and hard to follow or modify. One thing patcher languages are not so good at is managing complexity. Large programs seem to get crazy and unmanagable relatively easily. This leads me to an interesting paradox about programming that has stuck with me since 1993 when I was taking Computer Science in college. Some famous computer scientist (I forget exactly who) said "you have to write the program in order to know how to write the program." I have found that this actually makes a lot of sense, so when programming with Pd, first I try to whip out a working prototype, then start again from scratch and build it the way it should be done, with things nicely modularized into objects (abstractions generally). It would be great if we could gather this info into a common page. There are a massive amount of books about programming techniques for procedural and object oriented languages, but there is basically nothing about programming techniques for patcher languages, even though they have been around for 20+ years and are decently widespread in use. .hc

9 13

Gem .OBJ quest.
by timon botez 25 Mar '04

25 Mar '04

Halo, another Gem q. Does anyone know if there is a way to access the polygons on a imported .obj file? Im drying to distort a model over time and has no idea how to go about it. Any clues are welcome HNY Timon.

3 2

64 bits of a/v pleasure?
by thewade 25 Mar '04

25 Mar '04

hello, Sorry if this has been asked before. Are there plans to write an optomized version of PD for the new 64 bit desktops/laptops? (G5/AMD 64 FX) The scoop at tomshardware maked amd look really good, in 64 bit mode, and I know there are writeins for linux 2.6 on AMD 64FX... Any thoughs, as I have had a hard time getting video processing and audio synthsis running in realtime on the same laptop (or at all with some packages that use libquicktime and ffmpeg, \'cause thoes two fight)? This could be the answer. thanks, -thewade

2 1

video capture
by Danny Perreault 25 Mar '04

25 Mar '04

Hi I'd like to know if there is a way to import video in gem from a numeric converter (dazzle or a numeric dv cam). Is there an object that allows me to import the signal and use it in real time? Danny Perreault perreault.danny(a)courrier.uqam.ca

12 12

Gem/Pd crashing in edit mode in osx
by Nick Fells 25 Mar '04

25 Mar '04

Hi again. Pd 0.37 from Hans' osx installer, Gem 0.87, osx 10.2.8. After stopping rendering, I often get a crash when editing patches: 'GEM: Stop rendering pd_gui: pd process exited /Applications/Pd37.command: line 3: 457 Bus error /Applications/usr/local/bin/pd -verbose -midiindev 1 -lib /Applications/pd/extra/Gem -audiodev 2 -listdev' This seems to happen with the Gemwin open or closed: actually seems happier editing whilst rendering, bizarrely. It does the 'pd_gui' bit when I try to move or add objects. Nick

3 3

processing text
by Martin Dupras 25 Mar '04

25 Mar '04

Hi, I'm trying to read text from textfiles in pd and display sentences with the text object in gem. However, I am having a few problems. I'm reading sentences with textefile, which works well. I read lines in the textfile one by one, which I want to send as lists to the text3d object. What comes out of the textfile object is something like: "list the dog is asleep" which I need to convert to: "text the dog is asleep" How do I do that in pd? Two corollary questions: 1) is there an escape character that can be used in the message object, or otherwise a way to store the "space" character in a text object as a list element? 2) is there a way to count the number of elements in a list? Thanks! - martin

3 3

os x gem fullscreen
by Ralf Baecker 25 Mar '04

25 Mar '04

hi there, i'm new to the pd and gem thing. so my first problem/question is, if it is possible to get the gem windows fullscreen on a second display? i tried some messages... but most of them didn't work. like "fullscreen 1" ,i also tried to move it with a "x offset -1024" on the other screen... thanx, ralf

6 11

pix_video alphachannel
by marius schebella 25 Mar '04

25 Mar '04

hi, is it possible to convert the liveinput (pix_video) to some format with alpha channel? i tried [pix_video] [alpha] [pix_rgba] [pix_alpha] ... doesnot seem to work. marius.

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gem -- antialiasing?
by Josh Steiner 25 Mar '04

25 Mar '04

hey i was just looking at some info about jitter and came across this screenshot: http://www.cycling74.com/products/jitter-img/3d_shapes.jpg and it reminded me of a little gem project i have going. one of the problems i had that i want to address is the jagged edges and occastional little white glitches that appear behind the spheres: http://eds.org/~joschi/r/spiral.png any suggestions as to how i could get the spheres to renderf a bit smoother and get antialiasing like in the jitter screenshot? -- ____________________________________________________ independent u.s. drum'n'bass -- http://vitriolix.com #N canvas 415 0 788 966 12; #X obj 259 409 gemwin; #X msg 257 248 create; #X msg 257 271 destroy; #X msg 217 318 1; #X msg 217 342 0; #X obj 275 317 loadbang; #X msg 309 385 reset; #X obj 275 335 t b b; #X msg 319 50 \; pd dsp 1; #X obj 319 25 loadbang; #X obj 553 272 gemwin; #X floatatom 567 94 0 0 0 0 - - -; #X floatatom 606 94 0 0 0 0 - - -; #X floatatom 643 94 0 0 0 0 - - -; #X floatatom 679 94 0 0 0 0 - - -; #X obj 256 181 loadbang; #X obj 256 225 t b b; #X obj 256 203 delay 1000; #X obj 549 11 loadbang; #X obj 549 37 delay 1000; #N canvas 573 96 723 698 lighting 0; #X text 111 111 create and destroy the graphics window; #X obj 14 362 gemwin; #X msg 47 110 create; #X msg 54 138 destroy; #X msg 68 190 1; #X msg 67 228 0; #X msg 122 336 lighting 1; #X obj 313 354 gemhead 1; #X msg 122 305 lighting 0; #X text 150 38 create a sphere with and without lighting; #X text 313 314 gemhead has a value of 1 so that it is rendered before the sphere is; #X text 61 284 you can turn lighting on and off while it is running ; #X text 110 210 turn rendering on and off; #X msg 398 507 1 1 1; #X msg 345 505 1 0 1; #X text 449 501 change the lights color; #X floatatom 389 355 0 0 0 0 - - -; #X msg 185 424 debug 0; #X msg 186 455 debug 1; #X text 96 400 figure out where the light is; #X obj 313 535 light; #X text 240 558 creates a local light; #X msg 434 436 2; #X msg 477 436 3; #X msg 390 438 1.1; #X text 389 417 change the position of the light; #X obj 313 395 rotateXYZ 0 -60 0; #X obj 313 475 translateXYZ 2 0 0; #X connect 2 0 1 0; #X connect 3 0 1 0; #X connect 4 0 1 0; #X connect 5 0 1 0; #X connect 6 0 1 0; #X connect 7 0 26 0; #X connect 8 0 1 0; #X connect 13 0 20 1; #X connect 14 0 20 1; #X connect 16 0 26 2; #X connect 17 0 20 0; #X connect 18 0 20 0; #X connect 22 0 27 1; #X connect 23 0 27 1; #X connect 24 0 27 1; #X connect 26 0 27 0; #X connect 27 0 20 0; #X restore 15 15 pd lighting; #X msg 264 358 lighting 1; #X obj 15 182 s master-timer; #X floatatom 15 162 5 0 0 0 - r-master-timer -; #N canvas 0 0 486 336 balls 0; #X obj 10 25 ts_ball 1; #X obj 10 50 ts_ball 2; #X obj 10 75 ts_ball 3; #X obj 10 100 ts_ball 4; #X obj 10 125 ts_ball 5; #X obj 10 150 ts_ball 6; #X obj 10 175 ts_ball 7; #X obj 10 200 ts_ball 8; #X obj 10 225 ts_ball 9; #X obj 10 250 ts_ball 10; #X obj 10 275 ts_ball 11; #X obj 10 300 ts_ball 12; #X obj 10 325 ts_ball 13; #X obj 10 350 ts_ball 14; #X obj 10 375 ts_ball 15; #X obj 10 400 ts_ball 16; 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#X obj 10 1375 ts_ball 55; #X obj 10 1400 ts_ball 56; #X obj 10 1425 ts_ball 57; #X obj 10 1450 ts_ball 58; #X obj 10 1475 ts_ball 59; #X obj 10 1500 ts_ball 60; #X obj 10 1525 ts_ball 61; #X obj 10 1550 ts_ball 62; #X obj 10 1575 ts_ball 63; #X obj 10 1600 ts_ball 64; #X obj 10 0 ts_ball 0; #X obj 10 0 ts_ball 0; #X obj 10 0 ts_ball 0; #X restore 109 15 pd balls; #X floatatom 15 206 5 0 0 0 - - -; #X obj 15 226 s master-divisor; #X obj 236 189 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 13 266 gemhead; #X obj 13 466 rotate; #X floatatom 34 444 0 0 0 0 - - -; #X obj 13 422 color; #X msg 48 399 1 1 1; #X msg 48 376 1 0 0; #X floatatom 27 288 5 0 0 0 - - -; #X floatatom 76 288 5 0 0 0 - - -; #X floatatom 125 288 5 0 0 0 - - -; #X obj 135 450 gemhead; #X obj 135 473 world_light 1; #X floatatom 27 334 5 0 0 0 - - -; #X floatatom 71 334 5 0 0 0 - - -; #X floatatom 115 334 5 0 0 0 - - -; #X obj 13 489 circle; #N canvas 91 300 458 308 master-timer 0; #X floatatom 138 111 5 0 0 0 - - -; #X obj 112 36 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X obj 112 54 for++ 0 1e+007 10; #X floatatom 141 181 5 0 0 0 - - -; #X obj 153 219 s r-master-timer; #X obj 142 155 * 0.01; #X obj 152 21 inlet; #X connect 0 0 5 0; #X connect 1 0 2 0; #X connect 2 0 0 0; #X connect 3 0 4 0; #X connect 5 0 3 0; #X connect 6 0 2 0; #X restore 188 67 pd master-timer; #X msg 241 45 stop; #X msg 188 44 start; #X obj 13 353 scaleXYZ 6 -6 0; #X msg 562 242 view 0 0 7; #X msg 553 187 view \$1 \$2 \$3 \$4; #X obj 544 114 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 -1; #X text 541 225 view straigt down; #X obj 13 307 translateXYZ 0 0 -3; #X obj 188 21 loadbang; #X msg 549 60 -7 -0.15 3 52; #N canvas 270 293 999 527 mouse 0; #X obj 59 27 gemmouse; #X floatatom 60 56 5 0 0 0 - - -; #X floatatom 72 77 5 0 0 0 - - -; #X floatatom 90 97 5 0 0 0 - - -; #X floatatom 104 116 5 0 0 0 - - -; #X floatatom 116 137 5 0 0 0 - - -; #X obj 172 16 key; #X floatatom 184 43 5 0 0 0 - - -; #X obj 172 68 select 97 100 119 115; 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Re: [PD] latency
by mattn-l＠rogers.com 25 Mar '04

25 Mar '04

I've managed to get it down to 15ms on a g4 1ghz powerbook with a motu828mkII .. but nothing below that. 12ms almost works.. but 10 and under are a complete mess. is this because of portaudio on os x? or is there something i can do about it? i know that the motu will do 3-4ms with max/msp and reaktor, but not with pd. matt. > > From: plessas(a)sbox.tugraz.at > Date: 2003/11/15 Sat AM 08:58:08 EST > To: pd-list(a)iem.at > Subject: [PD] latency > > dear list, > > who managed to run pd with less than 30 msec of latency? > how do you do that? > > i tried: > osx on a g3 pismo (~500MHz) > osx on a g3 pismo (~500MHz) using an rme/hdsp > win2k on a P4 2.5GHz using asio and an rme/hdsp > and nothing less than 30msec! > > thanks for any replies! > > peter_p > > > _______________________________________________ > PD-list mailing list > PD-list(a)iem.at > http://iem.at/cgi-bin/mailman/listinfo/pd-list > 1

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Pd-list March 2004