Re: [PD] mix_movement and pix_mean_color
On Wed, 15 Dec 2010, Jack wrote: Le mardi 14 décembre 2010 à 18:18 -0500, Mathieu Bouchard a écrit : [alpha] in itself doesn't modify a pix, it only activates the use of the alpha channel in a tex, No, it activate alpha blending in the fragment processor, so on a geo after resterization or/and a texture apply on this rasterized geo. ah... désolé, tu as raison. and so, it's only relevant after using [pix_texture], Or without [pix_texture] (just a geo). idem ___ | Mathieu Bouchard tél: +1.514.383.3801 Villeray, Montréal, QC ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Re: [PD] mix_movement and pix_mean_color
Le mardi 14 décembre 2010 à 18:18 -0500, Mathieu Bouchard a écrit : > On Wed, 15 Dec 2010, Anas Ghrab wrote: > > > Is it normal that I get always 1 on the fourth output after the [unpack > > f f f f] from the second outlet of [pix_mean_color] ? I tried with an > > [alpha], but nothing changed. > > Bonjour, > > [alpha] in itself doesn't modify a pix, it only activates the use of the > alpha channel in a tex, No, it activate alpha blending in the fragment processor, so on a geo after resterization or/and a texture apply on this rasterized geo. > and so, it's only relevant after using > [pix_texture], Or without [pix_texture] (just a geo). > and it doesn't do what you want to do. that true. > > What do you want the alpha channel to represent, in your pix ? Only the alpha ! Look at the 'data' folder in the gem example, there is a 'fractalAlpha.TIF', [pix_mean_color] return the average of the alpha in this pix. Anas, put a [pix_rgba] after [pix_video]. ++ Jack > > ___ > | Mathieu Bouchard tél: +1.514.383.3801 Villeray, Montréal, QC > ___ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Re: [PD] mix_movement and pix_mean_color
On Wed, 15 Dec 2010, Anas Ghrab wrote: Is it normal that I get always 1 on the fourth output after the [unpack f f f f] from the second outlet of [pix_mean_color] ? I tried with an [alpha], but nothing changed. Bonjour, [alpha] in itself doesn't modify a pix, it only activates the use of the alpha channel in a tex, and so, it's only relevant after using [pix_texture], and it doesn't do what you want to do. What do you want the alpha channel to represent, in your pix ? ___ | Mathieu Bouchard tél: +1.514.383.3801 Villeray, Montréal, QC ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
[PD] mix_movement and pix_mean_color
Hi all, Is it normal that I get always 1 on the fourth output after the [unpack f f f f] from the second outlet of [pix_mean_color] ? I tried with an [alpha], but nothing changed. Here's the test file. Thanks, --- Anas Ghrab p.s. : OS X 10.5.8; Pd : 0.42.5-extended mouvement.pd Description: Binary data ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
