[PD] GEM - alpha blending of images over movies
oli44 at manga-burgah.net
Fri Feb 16 19:48:20 CET 2007
Le samedi 17 février 2007 à 04:44 +1100, Item State a écrit :
> i'm trying to port a former jitter patch to pd/gem
> 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:
> (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
> (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-
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