johnpitcairn

I've found the poly~ I'm in, can I also find the instance number I'm in?

get-poly-instance-number

One option (although you may not like it) may be to load an instance of thispoly~ inside your external and interact with that. Although you may be opposed to this approach I have a feeling that anything else may involve undocumented bits of the API or the poly~/thispoly~ code. The other advantage of this approach is that it will work in Max 5 as any necessary changes will have been made by Cycling '74.

You can always load up thispoly~ get the instance, store the result and then free your thispoly~, all in your new routine to conserve resources....

method m = zgetfn(x, gensym("getindex"));

This is undocumented, top seeeekret and might change at any time.

Am 27.11.2007 um 23:05 schrieb Alex Harker:

> One option (although you may not like it) may be to load an 

> instance of thispoly~ inside your external and interact with that. 

> Although you may be opposed to this approach I have a feeling that 

> anything else may involve undocumented bits of the API or the poly~/ 

> thispoly~ code. The other advantage of this approach is that it 

> will work in Max 5 as any necessary changes will have been made by 

> You can always load up thispoly~ get the instance, store the result 

> and then free your thispoly~, all in your new routine to conserve 

method m = zgetfn(x, gensym("getindex"));
if (m) {
   long index = (*m)(x, p);
}

>
> One option (although you may not like it) may be to load an  
> instance of thispoly~ inside your external and interact with that.  
> Although you may be opposed to this approach I have a feeling that  
> anything else may involve undocumented bits of the API or the poly~/ 
> thispoly~ code. The other advantage of this approach is that it  
> will work in Max 5 as any necessary changes will have been made by  
> Cycling '74.
>
> You can always load up thispoly~ get the instance, store the result  
> and then free your thispoly~, all in your new routine to conserve  
> resources....
>
> Regards,
>
> Alex


Quote: Jeremy Bernstein wrote on Wed, 28 November 2007 11:32

----------------------------------------------------

> method m = zgetfn(x, gensym("getindex"));

Hah! I'd tried various things very close to that, but wasn't guessing the right incantation - "getindex". Thanks Jeremy.

Alex: Yes, I'd do that, but I'm already using the secret hacky stuff to find parentpatchers etc, so this is a simple addition to the same code. I'm aware it's gonna break, hopefully Max 5 will make this stuff easier and more reliable (get parentpatcher at loadbang, get patcher args, are we in an abstraction, etc).

Quote: Jeremy Bernstein wrote on Wed, 28 November 2007 11:32
----------------------------------------------------
> method m = zgetfn(x, gensym("getindex"));
> if (m) {
>    long index = (*m)(x, p);

Alex: Yes, I'd do that, but I'm already using the secret hacky stuff to find parentpatchers etc, so this is a simple addition to the same code. I'm aware it's gonna break, hopefully Max 5 will make this stuff easier and more reliable (get parentpatcher at loadbang, get patcher args, are we in an abstraction, etc).


> Given a poly~ object, and a t_patcher *:

One small addition - you must cast the method return to a long or XCode will complain that the return is a pointer:

Quote: Jeremy Bernstein wrote on Wed, 28 November 2007 11:32
----------------------------------------------------
> Given a poly~ object, and a t_patcher *:
>
> method m = zgetfn(x, gensym("getindex"));
> if (m) {
>    long index = (*m)(x, p);
> }

m = zgetfn(poly, gensym("getindex"));
if (m) 
{
index = (long)(*m)(poly, patcher);
}


Get poly~ instance number?