Hi there, Bonjour,

I've got a simple switch circuit hooked up to PD via my arduino. The switch is supposed to change the RGBcolour of the gemwin. The PD2Arduino part works fine, but I am having troubles with my [gemwin] patch.

I have a projector (with a native res of 1024 x 768, 70Hz) connected via VGA to my PowerBook G4 as a virtual desktop. Not in mirror mode.

On my iMac (intel duo core with PD-extended 0.41.4), this patch works great.

However, on the computer I need to use, my PowerBook G4 (power pc with PD -extended 0.41.4), the GEM window opens, but is all white and unresponsive. The only error message I get in the G4's Pd window is "GemWindow Activate err=0" , but I get that message in the Pd window of my iMac as well, and the patch works fine there.

In trying to troubleshoot the probelm, I have found that my G4 creates a responsive [gemwin] up until the "dimen 700 700". After that, all white. And it kind seems to mess up PD in a larger way because if I cose the patch, and open the [gemwin] help file, I keep getting a blank, white window. I have to completely restart PD in order to get even the [gemwin] helpfile working.

I've tried doing fullscreen on both the G4's desktop and the projector desktop and the same problem occurs, the [gemwin] is all white.

I've tried sending the "reset" message to the [gemwin] object to clear it's cache or whatever, still nothing.

There's no other [gemwin] or gem patch going on in the background.

I 've attached my patch to this post, if anyone want a give it a try. Thanks for any help you can offer. Merci d'avance!

http://www.pdpatchrepo.info/hurleur/random_colour.pd

For posterity, my solution so far:

I reduced (in Display Preferences) the projector's resolution to 640 x 480. I correspondingly changed the gemwin dimensions to 640 x 480.

Since I was hitting some kind of gemwin dimension limit around 700 pixels, this now outputs an entirely coloured screen... and that's what I want

I'm still curious as to why I couldn't seem to have a gemwin larger than 700 x700 on my virtual desktop...... hmmmm... I actually came up against the same issue in MAX 5 (yes, I re-made my PD patch in Max 5) :>

http://www.pdpatchrepo.info/hurleur/random_colour.pd

I updated Pure Data on the G4, so now I'm running 0.42.5-extended.... still no dice!

Hiya

I've downloaded the pdmtl abstractions, and have followed their step-by-step instructions on the dataflow wiki:

unzip, make sure you have the other extermals necessary ('moocow','tof', 'iemmatrix', etc...), create folder in user's library, create filepath in pd's 'preferences'...

but everytime I try to call one of the abstractions, pd can't find it. :{

and yes, i've tried restarting my computer

I read in some other forum that you have to have the search path for 'moocow' b-4 the one for 'pdmtl', but it doesn't help.

Anyone else feeling this?