Hi
I did not hear back yesterday and I am wondering Can I use the d-scale abstraction David Mccallum wrote in rjdj?
pp
Hi,
On Fri, Jun 17, 2011 at 07:37:00AM -0400, Pagano, Patrick wrote:
I did not hear back yesterday and I am wondering Can I use the d-scale abstraction David Mccallum wrote in rjdj?
I answered now, but to answer in more general terms: If an abstraction uses only the objects and features that are in Pd-vanilla as downloadable from Miller's site and if it in addition does not use objects from the expr-family ([expr], [fexpr], [expr~]) which are GPL, then it will run in RjDj on iOS.
A nice way to check this with Pd-extended instead of vanilla is starting Pd with the "-noprefs" option, so it does not load any externals and doesn't set any paths. If the abstraction doesn't give any errors about missing objects and if it doesn't use expr, then it will be fine.
Ciao
Frank
Hi frank They have changed our security policies here at work so I cannot send a .zip! For some reason But here is an FM glitcher using d-scale and Tonalatonal, I patch I found on list a few years ago that is RIPE for rjDJ-ness Maybe you can look at these and help me make em a little more spiffy, or at very least get tonal working! pp
On 6/17/11 10:43 AM, "Frank Barknecht" fbar@footils.org wrote:
Hi,
On Fri, Jun 17, 2011 at 07:37:00AM -0400, Pagano, Patrick wrote:
I did not hear back yesterday and I am wondering Can I use the d-scale abstraction David Mccallum wrote in rjdj?
I answered now, but to answer in more general terms: If an abstraction uses only the objects and features that are in Pd-vanilla as downloadable from Miller's site and if it in addition does not use objects from the expr-family ([expr], [fexpr], [expr~]) which are GPL, then it will run in RjDj on iOS.
A nice way to check this with Pd-extended instead of vanilla is starting Pd with the "-noprefs" option, so it does not load any externals and doesn't set any paths. If the abstraction doesn't give any errors about missing objects and if it doesn't use expr, then it will be fine.
Ciao
Frank
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Hi,
On Fri, Jun 17, 2011 at 10:45:45AM -0400, Pagano, Patrick wrote:
But here is an FM glitcher using d-scale and Tonalatonal, I patch I found on list a few years ago that is RIPE for rjDJ-ness Maybe you can look at these and help me make em a little more spiffy, or at very least get tonal working!
Okay, that's a bit of tedious work. but doable. The patches only use [sort], which you can replace by [list-sort] with [list-rdrip] from the [list]-abstractions. They only use [sort 1] which is ascending sort i.e. a naked [list-sort].
A bit more tricky to replace are the expr-constructs used. Fortunatly [d-scale] is only used as [d-scale -1 1 1 100 100]. This is sufficiently similar to [m_scale -1 1 1 100 dB] from the rj-library, so I'd just use that.
Another expression used several times is this:
expr~ if ($v1 == 0, 0, (if ($v1 < 0, -1, 1)))
This is a signum function for signals. You can replace this with the sgn~.pd from the "purepd" collection in CVS/Pd-extended. Make sure to also get the lt~.pd and gt~.pd abstractions. Alternatively you can also get away with this:
[inlet~]
|
| [abs~]
| |
[/~]
|
[outlet~]
I.e. divide a signal by its absolute value. Division of 0/0 in Pd here gives 0 again, so you're cheating okay around this exceptional case.
The other expr-expression just require some work to explode them into normal math objects. You will gain a bit of execution speed by this, as expr is a bit slower than exploded math.
Ciao
Frank
-
Frank Barknecht -
Pagano, Patrick