Here's how I've managed to send and receive from a parent(multi
instance) abstraction to multiple instances of nested sub abstractions.
within main abstraction [mainAb]
some data named $0var send it like this [s $0var]
initialize sub abstractions
pass names X_1 and X_2 in so you can send and receive data to these abstractions individually
[abX X_1 $0] [abX X_2 $0]
within sub abstraction abX initialized with X_1
$1 = X_1
$2 = mainAb's $0
for all instances of abX
to receive from main's [s $0var]
[r $2var]
to to send and receive locally and have mainAb access
within abX [s $2$1varZ]
within mainAb [r $0X_1varZ] and [r $0X_2varZ]
a way to get global data to sub abstractions of abX
within abX initialize [abY $2var]
within abY $1var = mainAb $0var
This information is useful say if you have multiple voices and want to have them share the same control
so say $0var is a send on a filter frequency slider
when you move the slider all instances of abX receive the new filter frequency
when you want information to or from a specific instance of abX say like you want to plot each of the voices outputs on a scope
use [s~ $2$1varZ] in abX
then in main [r~ $0X_1varZ] and [r $0X_2varZ] then you can write those to a table so you can see which voice is sounding
Hello,
I was thinking about scope for receive/send names yesterday and
thought of a way to implement something more flexible than
(explicitly) using $0 to define the scope of send/receive pairs (and
possibly other objects that register a symbol).
My hack makes use of my "get" method for canvases patch:
http://sourceforge.net/tracker/?func=detail&aid=3308027&group_id=55736&atid=478072
Right now I'm seeing several categories, and I'm not sure how they all relate--
meaning they may or may not require different approaches:
1) _this_ canvas, basically what you would get if you prefixed the
.x12345 name before the s/r symbol
2) ways to break out of a canvas environment to the parent, parent of parent, etc.,
all the way to toplevel
3) ways to communicate among abstraction instances, including
_this_ abstraction, all abstractions on the parent, parent of parent, etc., to toplevel
4) ways to communicate among all libdir abstractions*
5) global s/r names, abstraction global s/r names
#1 is pretty simple-- just add an attribute for the canvas symbol to the "get" method,
and prefix it to the s/r symbol.
#2 is pretty simple, too-- just use integers to specify how far up the tree you want to
go, get the $0 for that canvas environment, and prefix it to the s/r symbol.
#3 is similar to #2, except that you also prefix the directory and filename with the $0
#4 is like #3 except that you leave out the filename
#5 global is nothing prefixed, abstraction global is the directory and filename with no $0
I've made some abstractions [to] and [from] that can do the job for #1, 2, and global.
($1 for level, $2 for the s/r symbol-- though I'm not sure if that's the best order)
The question is do I also try to add the functionality for #3, 4, and abstraction global
in those same objects, or do I make a [toabs]/[fromabs] pair for that purpose?
In a way it'd be nice if there were a standard way to address all the possibilities above
using only argument-- that way it'd be easy to add this functionality to already existing
objects, like the array dialog and iemguis, with a single combobox (and simply default
to whatever corresponds to global). The problem is that in both #2 and #3 a single float
arg would be nice to specify the level so I'm not sure how to differentiate between the
two.
Also, are there any other contexts I haven't addressed in 1-5?
-Jonathan
* the only current example of this I can think of is inside the pddp libdir, where there's a
global [v GLOBAL_PDDP_DSP] for the dsp status, but I'm not sure if it's used by anything
other than ezoutput~.pd.
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