Hey Paris,

Self-Similar is more or less a complex version of the "present-animation-example" in pixelTANGO. In the case of self-similar there are three different feedback layers with different shapes. Also there is a patch in the gem CVS examples somewhere called ??/.feedback.pd which shows how pt.feedback works.

Maybe Erich Berger and I should teach Gem feedback workshops? ;)

B>

Paris Treantafeles wrote:

agreed! i finally got around to playing with pixelTango the other day and i think it's really well suited for vj'ing.

off topic: ben: i was checking this out http://www.ekran.org/ben/self-similar/index.html

and wondered if you might share a very simple example patch on doing self-similar stuff?

thanks, p

On Monday, June 6, 2005, at 10:20 AM, B. Bogart wrote:

...

Take a look at pixelTANGO:

www.tot.sat.qc.ca

Greg came to a show I was in and was very happy with my Gem performance using pixelTANGO. Note I was not using pixelTANGO in the "typical" way, as I probably never will. ;)

Since touch101 is OpenGL it has most in common with the Gem lib for PD. (the basis of pixelTANGO). Gem does around 80% of what touch101 can do, save some fancy compositing and geometry modelling stuff.

B.

Cory wrote:

...

I want to create something like this (although not nearly as complicated) using pd:

http://www.derivativeinc.com/home/home.asp

can you guys point me to some patches/externals that I might want to focus on? and suggestions from people currently using pd for live vj/video art?

any/all useful information is greatly appreciated

thanks

---

audio @ myosound.com

---

--

---

PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

<signature.asc>_______________________________________________ PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

The effect is actually in texture-land not vector land.

So I copy the buffer pix_snap2tex, and then rotate the copy slightly, which gets copied in the next frame and so on. Like video feedback.

The idea came from Erich Berger to whom I am very grateful.

The good thing is that you can many iterations even if your graphics card is not great at repeating Geos. Actually self-similar is a little fancy because I'm using three copies of the feedback, and using pix_snap (not snap2tex) because the areas of the texture that only contain the background colour of the window are transparent. So one feedback surface can feedback onto a second.

Last time I heard there was some work on the idea of sharing display-lists in Gem so that multiple instances of the same object could be a little faster. Any status report on this?

b>

Thoralf Schulze wrote:

Hi,

...

off topic: ben: i was checking this out http://www.ekran.org/ben/self-similar/index.html

and wondered if you might share a very simple example patch on doing self-similar stuff?

judging from the pictures, I suppose that ben repeated geos with slight changes to their rotateXYZ / translateXYZ parameters. Something like this: http://lists.puredata.info/pipermail/pd-list/2004-09/022550.html , only in 3d.

hope this helps, thoralf.

---

How much free photo storage do you get? Store your holiday snaps for FREE with Yahoo! Photos http://uk.photos.yahoo.com

---

PD-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

sorry - usual "i forgot the attachement" thingie

e

On Mon, 6 Jun 2005, Erich Berger wrote:

...

The good thing is that you can many iterations even if your graphics card is not great at repeating Geos. Actually self-similar is a little fancy because I'm using three copies of the feedback, and using pix_snap (not snap2tex) because the areas of the texture that only contain the background colour of the window are transparent. So one feedback surface can feedback onto a second.

there is no magic in it. ben was also already postig a patch a while ago, but here again a patch with the basic principle.

its basically the same patch as as the snap2text helppatch, just that the trigger sequence from |t a b| is changed to |t b a| .

best

erich