[PD] GEM - alpha blending of images over movies

Fri Feb 16 21:03:56 CET 2007

i dont really understand but here is small advice :
use spigot instead of gate (pd internal),
don't use spigot , but send a 0 to gemhead.

cyrille

Item State a écrit :
> 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 
>>>>
>>>>
> ------------------------------------------------------------------------
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>>> 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;
>>> #X obj 185 283 gemwin;
>>> #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;
>>> #X obj 367 158 int;
>>> #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;
>>> #X connect 3 0 4 0;
>>> #X connect 3 0 9 0;
>>> #X connect 3 1 5 0;
>>> #X connect 3 1 6 0;
>>> #X connect 4 0 1 0;
>>> #X connect 5 0 1 0;
>>> #X connect 6 0 0 0;
>>> #X connect 7 0 11 0;
>>> #X connect 8 0 10 0;
>>> #X connect 9 0 8 0;
>>> #X connect 10 0 0 0;
>>> #X connect 11 0 12 0;
>>> #X connect 11 1 8 1;
>>> #X connect 11 2 6 0;
>>> #X connect 12 0 9 0;
>>> #X restore 451 501 pd gemwin;
>>> #X obj 105 60 gemhead;
>>> #X obj 105 267 rectangle 4 3;
>>> #X obj 105 240 pix_movie;
>>> #X msg 41 190 auto \$1;
>>> #X obj 41 170 tgl 15 0 empty empty empty 0 -6 0 8
>>> -262144 -1 -1 0 1
>>> ;
>>> #X msg 41 149 1;
>>> #X obj 9 122 loadbang;
>>> #X obj 105 107 scale 0.333333;
>>> #X obj 510 474 tgl 15 0 empty empty fullscreen 0
>> -6
>>> 0 8 -262144 -1
>>> -1 0 1;
>>> #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;
>>> #X obj 23 342 loadbang;
>>> #X msg 23 366 1;
>>> #X obj 23 392 tgl 15 0 empty empty empty 0 -6 0 8
>>> -262144 -1 -1 1 1
>>> ;
>>> #X obj 23 469 scale 0.333333;
>>> #X obj 23 442 alpha;
>>> #X obj 23 495 colorRGB 1 1 1 0.5;
>>> #X floatatom 144 475 5 0 0 0 - - -;
>>> #X msg 244 154 open \$1;
>>> #X obj 244 134 openpanel;
>>> #X obj 244 115 bng 15 250 50 0 empty empty empty
>> 17
>>> 7 0 10 -262144
>>> -1 -1;
>>> #X msg 244 175 set \$1 \, bang;
>>> #X obj 466 59 gemhead;
>>> #X obj 466 266 rectangle 4 3;
>>> #X obj 466 239 pix_movie;
>>> #X msg 402 189 auto \$1;
>>> #X obj 402 169 tgl 15 0 empty empty empty 0 -6 0 8
>>> -262144 -1 -1 0
>>> 1;
>>> #X msg 402 148 1;
>>> #X obj 370 121 loadbang;
>>> #X obj 466 106 scale 0.333333;
>>> #X obj 466 83 alpha;
>>> #X msg 402 212 open
>>> /home/cyrille/pd/Gem/examples/data/anim-1.mov;
>>> #X obj 605 133 openpanel;
>>> #X obj 605 114 bng 15 250 50 0 empty empty empty
>> 17
>>> 7 0 10 -262144
>>> -1 -1;
>>> #X obj 829 58 gemhead;
>>> #X obj 829 362 rectangle 4 3;
>>> #X msg 765 188 auto \$1;
>>> #X obj 765 168 tgl 15 0 empty empty empty 0 -6 0 8
>>> -262144 -1 -1 0
>>> 1;
>>> #X msg 765 147 1;
>>> #X obj 733 120 loadbang;
>>> #X obj 829 105 scale 0.333333;
>>> #X obj 829 82 alpha;
>>> #X msg 968 152 open \$1;
>>> #X obj 968 132 openpanel;
>>> #X obj 968 113 bng 15 250 50 0 empty empty empty
>> 17
>>> 7 0 10 -262144
>>> -1 -1;
>>> #X msg 968 173 set \$1 \, bang;
>>> #X obj 1192 59 gemhead;
>>> #X obj 1192 266 rectangle 4 3;
>>> #X obj 1192 239 pix_movie;
>>> #X msg 1128 189 auto \$1;
>>> #X obj 1128 169 tgl 15 0 empty empty empty 0 -6 0
>> 8
>>> -262144 -1 -1 0
>>> 1;
>>> #X msg 1128 148 1;
>>> #X obj 1096 121 loadbang;
>>> #X obj 1192 106 scale 0.333333;
>>> #X obj 1192 83 alpha;
>>> #X msg 1331 153 open \$1;
>>> #X obj 1331 133 openpanel;
>>> #X obj 1331 114 bng 15 250 50 0 empty empty empty
>> 17
>>> 7 0 10 -262144
>>> -1 -1;
>>> #X msg 1331 174 set \$1 \, bang;
>>> #X obj 23 419 gemhead 55;
>>> #X obj 103 348 openpanel;
>>> #X obj 103 329 bng 15 250 50 0 empty empty empty
>> 17
>>> 7 0 10 -262144
>>> -1 -1;
>>> #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
>>> ;
>>> #X obj 1192 128 translate 12 1 0 0;
>>> #X obj 829 127 translate 4 1 0 0;
>>> #X obj 466 128 translate -4 1 0 0;
>>> #X obj 105 129 translate -12 1 0 0;
>>> #X msg 103 374 set open \$1 \, bang;
>>> #X obj 829 336 pix_coordinate;
>>> #X floatatom 922 291 5 0 0 0 - - -;
>>> #X msg 922 309 0 \$1 1 \$1 1 1 0 1;
>>> #X text 190 472 <-----------------;
>>> #X text 970 289 <-----------------;
>>> #X obj 829 304 pix_texture;
>>> #X obj 843 259 loadbang;
>>> #X msg 842 283 quality \$1;
>>> #X obj 904 258 tgl 15 0 empty empty empty 17 7 0
>> 10
>>> -262144 -1 -1 0
>>> 1;
>>> #X obj 829 238 pix_film;
>>> #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;
>>> #X connect 7 0 6 0;
>>> #X connect 8 0 7 0;
>>> #X connect 8 0 68 0;
>>> #X connect 9 0 74 0;
>>> #X connect 10 0 1 1;
>>> #X connect 11 0 15 0;
>>> #X connect 12 0 11 0;
>>> #X connect 14 0 9 0;
>>> #X connect 15 0 13 0;
>>> #X connect 16 0 17 0;
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>>>
>>
>> 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
>>
> 
> 
> Send instant messages to your online friends http://au.messenger.yahoo.com 
> 
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> 
> 