[PD] signal objects inside dynamically created abstractions?
msp at ucsd.edu
Mon Aug 23 21:46:22 CEST 2010
Main difference is that Pd wasn't designed with self-editing patches in mind;
sending canvases directly to 'edit' them is effectively relying on Pd's
internal mechanisms which aren't designed as a user interface.
On Mon, Aug 23, 2010 at 09:39:22PM +0200, Peter Plessas wrote:
> Dear Matju, Roman,
> thank you for your explanations which both make sense. I am just
> wondering why the behavior is different in that:
> Tilde objects added (dynamically) to a patch force a recompilation of
> the dsp graph, while tilde objects inside dynamically created (loaded)
> abstractions do not cause it.
> best, P
> On 08/21/2010 05:22 AM, Mathieu Bouchard wrote:
> > On Sat, 21 Aug 2010, Peter Plessas wrote:
> >> Just creating tilde objects inside a subpatch (without being contained
> >> inside an abstractio) and connecting them works. I suppose there is a
> >> reason for this, but didn't find it.
> > Because the DSP is compiled, to save CPU time and SRAM space (that is,
> > space in the fast RAM that accelerates the regular RAM).
> > Then there is no incremental recompilation of the DSP, therefore, if it
> > were a simple automatic recompilation, anytime there is a ~ object, it
> > would recompile the whole thing, so, when you want to add many of them,
> > it'd be very slow.
> > There would be a fast automatic way, involving a [delay 0] (that is,
> > clock_delay(,0)) every time you add a tilde object, such that if you add
> > several objects within a [until], [repeat], [foreach], or [list-drip],
> > it only recompiles once. But Pd doesn't do this.
> > Instead you are responsible for doing it. It wouldn't be so bad, if you
> > had actually access to whether the DSP is currently On, because else you
> > can "turn back On" a DSP that never was. If you listen to [r pd], you
> > only know about new On/Off switches, not the state when your abstraction
> > was created. We'd need an extra external for that (if it does not exist
> > yet...).
> > _ _ __ ___ _____ ________ _____________ _____________________ ...
> > | Mathieu Bouchard, Montréal, Québec. téléphone: +1.514.383.3801
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