Hi,
I have tried to change graph-on-parents settings by message for displaying different arrays, it seems to work..
I did'nt test it with large tables.
(included patch : switchingGOPtables.pd).

Jean Yves Gratius <http://jy.gratius.free.fr>


Chuckk Hubbard a écrit :

On Dec 9, 2007 10:50 PM, Phil Stone <pkstone@ucdavis.edu> wrote:
 

Hi Chuck,

I think you're right; there's no way to avoid the copying.  It's good to
dream, though.  :-)
   

I have done some experimenting, and I think I'm on to something.  If
you create a graph from the put menu, then right-click and select
Open; and then Put an array on the opened subpatch, you can see the
red outline where you can decide what will be graphed-on the parent
graph.

It would not be too hard to send editmode and mouse movement messages
to that canvas to move arrays around inside it; and it probably would
actually be more efficient than copying.  But I also notice that the
graph subpatch has, in its options, an x and y margin, which moves the
red outline.  IF it's possible to change these values with messages,
it could be trivial to move that red outline to cover several
well-placed arrays, meaning that the graph would indeed switch arrays
like you want.
I started to look at the Pd code to see if I can find such a message
mentioned; if I find it I'll let you know.

-Chuckk



 

Chuckk Hubbard wrote:
   

It would be possible, if not CPU-efficient, to have them all hidden in
table objects, and simply use tabread and tabwrite to copy them to the
skeleton array when you want to switch.  You would only need one
tabread and tabwrite pair, just different ways to specify the target
of tabread.
I would envision binding the tab key to page through them.

But it is possible to put several arrays in one graph which makes me
wonder if there might even be a pure GUI way to do it.  Kind of makes
me want to take a look...

-Chuckk

On Dec 8, 2007 10:26 PM, Phil Stone <pkstone@ucdavis.edu> wrote:

     

This probably fits into the category of a wish for PD; I think there's
no way to do it currently, but I'd love to be proven wrong!

I'd like to be able to change the data an array points to rather than
actually change the data in the array.  The scenario which me think of
this is, I'd like to have a display of a currently-selected waveform
(which could be one of many pre-allocated arrays).  It would be
wonderful to have a level of indirection where the display-array can be
given a new address [object reference?] to one of the various
pre-allocated arrays, after which it redraws itself.

I suppose this unleashes all the evils of pointers (multiple references
to memory, etc.), but it would a serious advantage, performance-wise,
for the scenario I'm envisioning.

I also think it would be very cool if arrays could act as buttons...but
that's a different subject.


Phil Stone
pkstonemusic.com


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