Pd-list January 2008

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133 participants
232 discussions

Fwd: another [declare -lib] strangeness
by Mike McGonagle 23 Jan '08

23 Jan '08

---------- Forwarded message ---------- From: Mike McGonagle <mjmogo(a)gmail.com> Date: Jan 23, 2008 1:24 PM Subject: Re: [PD] another [declare -lib] strangeness To: IOhannes m zmoelnig <zmoelnig(a)iem.at> Hum, I have noticed something similar when declaring struct objects, too. Is this a related behavior? Mike On Jan 23, 2008 9:58 AM, IOhannes m zmoelnig <zmoelnig(a)iem.at> wrote: > hi > > originally i wanted to write the following feature-request: > using [declare] to load libraries (e.g. [declare -lib mylib]) works > nicely. > however, when i have several abstractions all depending on the same > library (and thus all have an instance of [declare -lib mylib]), i get > an error "mylib: already loaded" for each abstraction depending on > "mylib" but the first. > would it be possible to suppress this warning? (i don't see a reason to > keep it) > > i wrote a wee example to illustrate this behaviour, and while doing so i > noticed a real weirdness: > when i save a patch holding an abstraction with a [declare -lib mylib], > this parent patch will also have the "#X declare -lib mylib" line > (without a direct representation in the patch) > what is even weirder is, that it gets an additional line for each > abstraction containing a [declare]. > e.g. if i have 4 instances of an abstraction in my patch, i will get 4 > additional declare-lines. > loading this patch, i will get 7 errors that "mylib: already loaded" (4 > warnings from the abstractions; 3 warnings from the patch; only the 1st > declare-line in the patch gets evaluated properly) > > is this by design? > or is it a "bug"? (i cannot see any harm right now, but it is a bit > annoying) > > > all this is happening with Pd-0.41-0test11 on linux. > > fgmasdr. > IOhannes > > _______________________________________________ > PD-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list > > -- Peace may sound simple—one beautiful word— but it requires everything we have, every quality, every strength, every dream, every high ideal. —Yehudi Menuhin (1916–1999), musician -- Peace may sound simple—one beautiful word— but it requires everything we have, every quality, every strength, every dream, every high ideal. —Yehudi Menuhin (1916–1999), musician

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Gem: alpha blending without loss of brightness
by Georg Holzmann 23 Jan '08

23 Jan '08

Hallo! I have again a basic alpha blending problem, where I don't find a solution: For example I have two images (A + B), which are overlapping at a small part (C): ---------------- | image A | | | | |------------------ | | C | | -----------|---- | | | | image B | ------------------- Now I want that image A and image B looks normal (unchanged) and in the overlapping part the two images are added so that one sees both - and all this with openGL commands (not pix_add or similar, because I have lots of such regions). OK, I gave all images an alpha value of 0.5, but then the whole image losses brightness. So my question: is there a way to get this alpha blending and without a loss of brightness in the images ? or can I "renormalize" this effect somehow (re-increase the brightness) ? (see attached patch where I illustruted this problem with 2 colored rectangles) Thanks for any hint, LG Georg #N canvas 545 0 684 281 10; #X obj 27 140 gemwin; #X msg 44 71 create \, 1; #X msg 47 102 destroy; #X obj 161 205 rectangle 2 1; #X obj 162 71 gemhead; #X obj 163 107 colorRGB 1 0 0 0.5; #X floatatom 267 61 5 0 0 0 - - -; #X obj 466 204 rectangle 2 1; #X obj 467 74 gemhead; #X floatatom 574 70 5 0 0 0 - - -; #X obj 163 178 alpha; #X obj 467 176 alpha; #X obj 161 141 translateXYZ -1 0 0; #X obj 469 136 translateXYZ 1 0.2 0; #X obj 469 104 colorRGB 0 1 0 0.5; #X text 260 26 when you change these alpha values here \, also the colors of the non-overlapping region change:; #X connect 1 0 0 0; #X connect 2 0 0 0; #X connect 4 0 5 0; #X connect 5 0 12 0; #X connect 6 0 5 4; #X connect 8 0 14 0; #X connect 9 0 14 4; #X connect 10 0 3 0; #X connect 11 0 7 0; #X connect 12 0 10 0; #X connect 13 0 11 0; #X connect 14 0 13 0;

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Re: [PD] wiki site down?
by Hans-Christoph Steiner 23 Jan '08

23 Jan '08

There is an issue with another of the Poly servers that is causing this machine to deliver those pages. It's related to a network share. They had a problem with an internal server. pdpedia is fine. I am heading over there to iron out the details, so it should be back to working normally afterwards. .hc On Jan 20, 2008, at 11:38 AM, Mathieu Bouchard wrote: > > From here, http://wiki.puredata.info/ is still down. I don't know > what happens, whether it works for you but not for others, but I > swear that I get a 0 byte file posing as the main page. > > _ _ __ ___ _____ ________ _____________ _____________________ ... > | Mathieu Bouchard - tél:+1.514.383.3801, Montréal QC Canada ------------------------------------------------------------------------ ---- As we enjoy great advantages from inventions of others, we should be glad of an opportunity to serve others by any invention of ours; and this we should do freely and generously. - Benjamin Franklin

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GEM: texturing parts of multiple movies
by Georg Holzmann 22 Jan '08

22 Jan '08

Hallo! I have the following (basic) GEM problem (and some ascii-art ;) : I have 2 movies running with pix_film which are rendered on rectangles with the same size over the whole screen and I want to see only a part of each movie (see illustration): from movie A: ------------------------------- | | | | | | | |-------| | | | partA | | | | | | | |-------| | ------------------------------- from movie B: ------------------------------- | |--------| | | | partB | | | | | | | |--------| | | | | | | | ------------------------------- together: ------------------------------- | |--------| | | | partB | | | |(movieB)| | | |-------| |--------| | | | partA | | | |(movieA| | | |-------| | ------------------------------- So I tried to lay black rectangles over the movies and let free partA,partB so that one can only see these parts. But this does not work for multiple movies, because then I only see the movie with the highest gemhead priority (and also with alpha blending it was not possible) ... So my question: is this possible without additional pix_* commands ? (e.g. texturing only a part of the movie onto a rectangle ... ?) If yes has someone an idea how ? Thanks for any hint, LG Georg PS: if this is too confusing I can send an example patch ;)

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phasor to square
by raul diaz 22 Jan '08

22 Jan '08

Hi list! I need to convert a phasor into a square wave in this way: phasor: / / / / / / / | / | / | / | / | / | / | / | / | / | / | / | / |/ |/ |/ |/ |/ | square (2:1): ________ _________ _ | | | | | | | | | | | |____| |____| so, a relation HIGH:LOW holds a high or a low value (1 or 0) a indicate number of cycles. I need this conversion in order to make a masking, so square doesn't have to be an audio signal necessarily (could be a number upload each phasor cycle). What could be the best implementation for that scheme? Saludos! -- Raul Diaz Poblete ************************* raul.lete(a)gmail.com Barcelona [Spain]

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Re: [PD] GEM: texturing parts of multiple movies
by Roman Haefeli 22 Jan '08

22 Jan '08

hi georg and simon interesting problem with an interesting solution and interesting to see, that the alpha-depends-on-order-weirdness can be exploited in that way. roman On Wed, 2008-01-23 at 00:07 +1100, simon wise wrote: > On 22 Jan 2008, at 11:41 PM, simon wise wrote: > > > > > On 22 Jan 2008, at 11:03 PM, Georg Holzmann wrote: > > > >> Hallo! > >> > >> I have the following (basic) GEM problem (and some ascii-art ;) : > >> > >> I have 2 movies running with pix_film which are rendered on > >> rectangles > >> with the same size over the whole screen and I want to see only a > >> part > >> of each movie (see illustration): > >> > >> from movie A: > >> ------------------------------- > >> | | > >> | | > >> | | > >> | |-------| | > >> | | partA | | > >> | | | | > >> | |-------| | > >> ------------------------------- > >> from movie B: > >> ------------------------------- > >> | |--------| | > >> | | partB | | > >> | | | | > >> | |--------| | > >> | | > >> | | > >> | | > >> ------------------------------- > >> together: > >> ------------------------------- > >> | |--------| | > >> | | partB | | > >> | |(movieB)| | > >> | |-------| |--------| | > >> | | partA | | > >> | |(movieA| | > >> | |-------| | > >> ------------------------------- > >> > >> So I tried to lay black rectangles over the movies and let free > >> partA,partB so that one can only see these parts. But this does > >> not work > >> for multiple movies, because then I only see the movie with the > >> highest > >> gemhead priority (and also with alpha blending it was not > >> possible) ... > >> > >> So my question: is this possible without additional pix_* commands ? > >> (e.g. texturing only a part of the movie onto a rectangle ... ?) > >> If yes has someone an idea how ? > >> > >> Thanks for any hint, > >> LG > >> Georg > >> > >> PS: if this is too confusing I can send an example patch ;) > >> > >> _______________________________________________ > >> PD-list(a)iem.at mailing list > >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/ > >> listinfo/pd-list > > > > a somewhat clumsy workaround would be to make a transparent > > rectangle the size of part A, in front of the others in space, then > > movie B with the black masks behind that, then movie A behind that: > > > > set your gemwin to 'orthagonal' > > > > set the render order of the oblects: > > > > movie A first > > part A second > > movie B with masks etc next > > I replied too quickly, > > a better (more general solution which could involve more movies and > no masking) would be: > > set the gemwin 'orthagonal' > layer the movies so A is furthest away, then B, C etc > in front of this place a black rectangle > then transparent rectangles part A, B C etc > > render order is: > movie A > then part A > then movie B > then part B > then movie C > then part C > etc > finally render the black rectangle > > > this way you can easily move the part around > > > simon > > > > _______________________________________________ > PD-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list ___________________________________________________________ Telefonate ohne weitere Kosten vom PC zum PC: http://messenger.yahoo.de

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Re: [PD] GEM: texturing parts of multiple movies
by simon wise 22 Jan '08

22 Jan '08

On 22 Jan 2008, at 11:41 PM, simon wise wrote: > > On 22 Jan 2008, at 11:03 PM, Georg Holzmann wrote: > >> Hallo! >> >> I have the following (basic) GEM problem (and some ascii-art ;) : >> >> I have 2 movies running with pix_film which are rendered on >> rectangles >> with the same size over the whole screen and I want to see only a >> part >> of each movie (see illustration): >> >> from movie A: >> ------------------------------- >> | | >> | | >> | | >> | |-------| | >> | | partA | | >> | | | | >> | |-------| | >> ------------------------------- >> from movie B: >> ------------------------------- >> | |--------| | >> | | partB | | >> | | | | >> | |--------| | >> | | >> | | >> | | >> ------------------------------- >> together: >> ------------------------------- >> | |--------| | >> | | partB | | >> | |(movieB)| | >> | |-------| |--------| | >> | | partA | | >> | |(movieA| | >> | |-------| | >> ------------------------------- >> >> So I tried to lay black rectangles over the movies and let free >> partA,partB so that one can only see these parts. But this does >> not work >> for multiple movies, because then I only see the movie with the >> highest >> gemhead priority (and also with alpha blending it was not >> possible) ... >> >> So my question: is this possible without additional pix_* commands ? >> (e.g. texturing only a part of the movie onto a rectangle ... ?) >> If yes has someone an idea how ? >> >> Thanks for any hint, >> LG >> Georg >> >> PS: if this is too confusing I can send an example patch ;) >> >> _______________________________________________ >> PD-list(a)iem.at mailing list >> UNSUBSCRIBE and account-management -> http://lists.puredata.info/ >> listinfo/pd-list > > a somewhat clumsy workaround would be to make a transparent > rectangle the size of part A, in front of the others in space, then > movie B with the black masks behind that, then movie A behind that: > > set your gemwin to 'orthagonal' > > set the render order of the oblects: > > movie A first > part A second > movie B with masks etc next I replied too quickly, a better (more general solution which could involve more movies and no masking) would be: set the gemwin 'orthagonal' layer the movies so A is furthest away, then B, C etc in front of this place a black rectangle then transparent rectangles part A, B C etc render order is: movie A then part A then movie B then part B then movie C then part C etc finally render the black rectangle this way you can easily move the part around simon

2 1

gem: jit.lcd equivalent?
by Damian Stewart 22 Jan '08

22 Jan '08

hello list, with GEM, is there an equivalent to Jitter's jit.lcd object? jit.lcd lets you draw lines which stay permanently on the screen in 2d space, rather than as OpenGL objects, or what have you - it's more like moving a pen across a surface, you just draw a line and then forget about it. thanks d -- damian stewart | +351 967 797 263 | damian(a)frey.co.nz frey | live art with machines | http://www.frey.co.nz

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pd-extended some objects missing
by Ctrl Alt Back 22 Jan '08

22 Jan '08

Hello, i know it was here before, but currently i am failing to find answers : after installing pd-extended, some of the objects from libraries are missing : pix_record ... couldn't create pix_multiblob 6 ... couldn't create (most of other objects from gem are ok) readdir ... couldn't create what i am missing ? Pd version 0.41.0-extended-20080121, on Debian testing. CtrlAltBack -- |||Ctrl + Alt + Back||| |||restart your view|||

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Symposium on Visual Languages and Human-Centric Computing
by Hans-Christoph Steiner 22 Jan '08

22 Jan '08

Anyone know anything about this: http://vlhcc08.cs.unibw.de It seems that someone should be representing Pd there. .hc ------------------------------------------------------------------------ ---- If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of everyone, and the receiver cannot dispossess himself of it. - Thomas Jefferson

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Pd-list January 2008