That's smart! I guess you would have to accommodate for the first frame by having a 1f handle though?
18 jul 2013 kl. 14:20 skrev Colin Alway <[email protected]>: > how about using a TimeOffset and a ShuffleCopy to insert the previous frame > into it's own channelset in the stream, then in the Expression node, you'd > have expressions like: > > prev.red == r ? 1 : 0 > > > > On 17 July 2013 00:39, Holger Hummel|Celluloid VFX <[email protected]> > wrote: >> >> hey guys, >> >> i'm trying to evaluate pixels over a range of frames. i was wondering if >> it's possible to refer >> to the pixel value from a different frame in the Expression node, like e.g. >> >> r(frame 2) == r ? 1 : 0 >> >> right now i'm setting it up with a bunch of FrameHold and Shuffle nodes by >> shuffling each frame >> into its own channel so i'm able to access those pixel values. but maybe >> there's an easier way? >> >> thanks for any hints! >> >> cheers, >> Holger >> >> -- >> Holger Hummel - [email protected] >> >> Celluloid Visual Effects GmbH & Co. KG >> Paul-Lincke-Ufer 39/40, 10999 Berlin >> phone +49 (0)30 / 54 735 220 - [email protected] >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > -- > colin alway > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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