[PD-dev] Sending list of floats out an outlet
Ben Bogart - FMPM/F1999
bbogart at acs.ryerson.ca
Tue Jul 16 16:50:40 CEST 2002
Ok I think I got it now, but I could use a little clarification. Here is
t_atom* myf = f_out;
where f is a floatarg to the method. Why is it that Guenter is using
(t_atom*)&a_out rather than a_out as the *argv pointer? I copied the same
array and pointer declarations from his code.
Thanks for all the help!
On Tue, 16 Jul 2002, Ben Bogart - FMPM/F1999 wrote:
> Thanks Krzysztof,
> I think I'm getting somewhere, based on code from prepend in ggee (Thanks
> Guenter!) I'm not clear on how to use SETFLOAT to set multiple values in
> my atom array. Here is some of my code:
> t_atom f_out;
> t_atom* myf = f_out;
> I can use SETFLOAT(myf,f); to set the first value of the list, but I
> don't know how to set multiple list atoms... (I tried running SETFLOAT
> multiple times with the same pointer, but different values and I get a
> list "2Consistency check failed: atom_string2" Where 2 is the second
> value I set via SETFLOAT.
> Pointers would be appriciated.
> The simplest possible example of outputing a list of floats would be helpful.
> On Tue, 16 Jul 2002, Krzysztof Czaja wrote:
> > hi Ben,
> > if 'x' is your object pointer, 'n' is the number of floats, and
> > you already store them in an array of atoms 'a', then the call
> > will be
> > outlet_list(x, &s_list, n, a);
> > If the floats are kept in a float* array, then you need to
> > allocate an array of atoms, and copy the floats into it, using
> > SETFLOAT macro in a loop.
> > The tricky part could be deciding, how to allocate this output
> > array -- this was discussed some time ago on pd-dev. Also, there
> > are several examples in zexy, ggee, cyclone, etc.
> > Krzysztof
> > Ben Bogart - FMPM/F1999 wrote:
> > > I want to calculate a series of floats and output them as a list out the
> > > outlet, I see:
> > >
> > > void outlet_list(t_outlet *x,
> > > t_symbol *s, int argc, t_atom *argv);
> > >
> > > but don't know how to set the contents of the list, ie I'm not sure how
> > > to use gensym("list").
> B. Bogart
> PD-dev mailing list
> PD-dev at iem.kug.ac.at
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