Dave Della Costa

I've been working with setting points via a function editor to create a

signal controlled envelope, and attempting to do so without triggering

the envelope as I set zigzag~ (seems like the web forum is down, but if

it helps I got this idea from the thread with the subject "setting

Basically, I'm trying to use the setindex message to set index points

dynamically with zigzag~. However, unless there is a point already in

existence, it seems that setindex will not set that point. And here is

where my potential bug is coming in: it appears that with the setindex

message the x-value (format is 'setindex ')

I'm using Max/MSP 4.6.3 on a MacBook Pro 2.33 GHz Intel Core 2 Duo, if

that matters. Is this a bug, or am I confused about zigzag~

functioning, or something else? I did note that the printout lists

y-value then delta-x...so maybe that's a clue to my confusion, but I'd

So, besides this, does anyone have a sort of archetypal zig-zag~

amplitude envelope patch or methodology that works particularly well for

real-time manipulation of envelopes? What I've got is pretty okay, but

feels a bit hacky and occasionally gives me an audible glitch when I

reset the envelope (this patch includes also a simple envelope driven by

adsr~ basically lifted from that object's help file):

I've been working with setting points via a function editor to create a
signal controlled envelope, and attempting to do so without triggering
the envelope as I set zigzag~ (seems like the web forum is down, but if
it helps I got this idea from the thread with the subject "setting
parameters with zigzag~").

Basically, I'm trying to use the setindex message to set index points
dynamically with zigzag~.  However, unless there is a point already in
existence, it seems that setindex will not set that point.  And here is
where my potential bug is coming in: it appears that with the setindex
message the x-value (format is 'setindex   ')
is not getting set:

I'm using Max/MSP 4.6.3 on a MacBook Pro 2.33 GHz Intel Core 2 Duo, if
that matters.  Is this a bug, or am I confused about zigzag~
functioning, or something else?  I did note that the printout lists
y-value then delta-x...so maybe that's a clue to my confusion, but I'd
appreciate an explanation.

So, besides this, does anyone have a sort of archetypal zig-zag~
amplitude envelope patch or methodology that works particularly well for
real-time manipulation of envelopes?  What I've got is pretty okay, but
feels a bit hacky and occasionally gives me an audible glitch when I
reset the envelope (this patch includes also a simple envelope driven by
adsr~ basically lifted from that object's help file):

zigzag-bug-or-my-confusion-and-some-meanderings

> Basically, I'm trying to use the setindex message to set index points

> dynamically with zigzag~. However, unless there is a point already in

> existence, it seems that setindex will not set that point. And here is

> where my potential bug is coming in: it appears that with the setindex

> message the x-value (format is 'setindex ')

Only if the time is set to zero, the time seems to be ignored. Other 

One could call this a bug, you might want to set one segment to 0 

instead of deleting it... But it would be the same as deleting, at least 

I doubt that it would make a problem for you project though... ;-)

Dave Della Costa schrieb:
> Basically, I'm trying to use the setindex message to set index points
> dynamically with zigzag~.  However, unless there is a point already in
> existence, it seems that setindex will not set that point.  And here is
> where my potential bug is coming in: it appears that with the setindex
> message the x-value (format is 'setindex   ')
> is not getting set:

Only if the time is set to zero, the time seems to be ignored. Other 
times work.
One could call this a bug, you might want to set one segment to 0 
instead of deleting it... But it would be the same as deleting, at least 
if there is another element behind it...

-- 
Stefan Tiedje------------x-------
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zigzag~ bug (or my confusion?) and some meanderings