[PD] GEM - alpha blending of images over movies

Fri Feb 16 20:50:04 CET 2007

ok, it works now. i have to add all the paths
containing [pix_texture] objects _after_ the GEM
window has been created. that is, exclude them
initially with a closed [gate], create the window,
then open the gate. strangely, then everything's
painted correctly. ...so i can use texture + colorRGB,
nice.

thanks for your help + patience. ciao, -sciss-

--- Item State <itemstatechanged at yahoo.de> wrote:

> thanks, cyrille for your patch. yes mine looks
> chaotic
> but that's because i'm justing testing until i know
> everything works, before pasting that into the real
> patch.
> 
> unfortunately i have the same problem with your
> patch
> (psychedelic colours). the [colorRGB] is pretty
> cool,
> it does exactly what i want, but this only works
> here
> with [pix_texture] but have no effect when using
> [pix_draw] instead...
> 
> ciao, -sciss-
> 
> 
> --- cyrille henry <cyrille.henry at la-kitchen.fr>
> wrote:
> 
> > hello,
> > your patch is really a mess.
> > here is how i would have done it with gem.
> > 
> > cyrille
> > 
> > Item State a écrit :
> > > hi,
> > > 
> > > i'm trying to port a former jitter patch to
> pd/gem
> > >
> >
>
(http://lists.puredata.info/pipermail/pd-list/2006-11/043853.html).
> > > i have problems getting overlayed images to
> > display
> > > properly. i have four rectangles fed by
> pix_movie,
> > > then i need to fade in and out a rendered text
> > image.
> > > i tried using pix_image -> pix_texture and
> [alpha
> > 1].
> > > the images are .png with transparent portions. i
> > once
> > > got it to display correctly, but now if i open
> the
> > > patch, the videos all show up with wrong
> colours:
> > > 
> > > http://sciss.de/test/Bild%201.png
> > > (see attached patch gemTest2.pd)
> > > 
> > > once i remove the pix_image and pix_texture,
> save
> > the
> > > patch and re-open it, the videos show up
> correctly
> > > again:
> > > 
> > > http://sciss.de/test/Bild%205.png
> > > (see attached patch gemTest2B.pd)
> > > 
> > > ... also, i don't know how to fade in the text
> > (the
> > > "action" string). is there an alpha-channel
> > multiplier
> > > for pix_image? thanks for hints!
> > > 
> > > is it possible to stretch the video so that the
> > > rectangle stays the same, but only the top part
> of
> > the
> > > video is shown (vertically zoomed without
> > > interpolation, so that you can see the pixels)?
> > > 
> > > ciao, -sciss-
> > > 
> > > 
> > > 
> > > Send instant messages to your online friends
> > http://au.messenger.yahoo.com 
> > > 
> > > 
> > >
> >
>
------------------------------------------------------------------------
> > > 
> > > _______________________________________________
> > > PD-list at iem.at mailing list
> > > UNSUBSCRIBE and account-management ->
> > http://lists.puredata.info/listinfo/pd-list
> > > #N canvas 1215 158 1520 612 10;
> > #X msg 434 470 destroy;
> > #N canvas 547 142 502 352 gemwin 0;
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> > #X obj 66 107 outlet;
> > #X obj 67 10 inlet;
> > #X obj 67 41 route create;
> > #X msg 67 70 set destroy;
> > #X msg 178 68 set create;
> > #X msg 212 143 destroy \, reset;
> > #X obj 357 10 inlet;
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> > #X obj 123 178 t b b;
> > #X msg 93 214 dimen 1024 768 \, fullscreen \$1 \,
> > create \, 20;
> > #X obj 357 38 t b f b;
> > #X obj 263 38 delay 500;
> > #X connect 2 0 3 0;
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> > #X obj 105 240 pix_movie;
> > #X msg 41 190 auto \$1;
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> -6
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> > #X obj 23 521 pix_image;
> > #X msg 101 402 open
> >
> /home/cyrille/pd/Gem/examples/data/fractalAlpha.TIF
> > ;
> > #X obj 23 566 rectangle 4 3;
> > #X obj 105 84 alpha;
> > #X obj 23 543 pix_texture;
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> > #X msg 402 148 1;
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> > #X obj 466 83 alpha;
> > #X msg 402 212 open
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> > #X obj 968 113 bng 15 250 50 0 empty empty empty
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> > 7 0 10 -262144
> > -1 -1;
> > #X msg 968 173 set \$1 \, bang;
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> > #X msg 605 160 set open \$1 \, bang;
> > #X msg 41 213 open
> > /home/cyrille/pd/Gem/examples/data/anim-1.mov;
> > #X msg 765 211 open
> > /home/cyrille/pd/Gem/examples/data/anim-1.mov;
> > #X msg 1128 212 open
> > /home/cyrille/pd/Gem/examples/data/anim-1.mov
> > ;
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> 10
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> > 1;
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> > #X connect 0 0 1 0;
> > #X connect 1 0 0 0;
> > #X connect 2 0 14 0;
> > #X connect 4 0 3 0;
> > #X connect 5 0 4 0;
> > #X connect 6 0 5 0;
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> > 
> 
> 
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