I have another pd method (using purr-data) for you which might be a tiny
bit simpler than using |hid|:
In purr-data, you can use the object |legacy_mousemotion| which will
then output x and y position of the mouse for the pd current window.
If you like using pd-l2ork 1.0 instead, you can actually use cyclone's
|MouseState| object, which gives you a similar feature set (although I
like |MouseState| better, it seems to work smoother).
You could then use these to make midi messages inside pd and output it
through purr-data/pd-l2ork's midi output.
Brandon Hale
On 7/27/21 4:33 AM, Will Godfrey wrote:
On Tue, 27 Jul 2021 10:03:33 +0200
Lorenzo Sutton <lorenzofsutton@xxxxxxxxx> wrote:
Hi Will,
On 27/07/21 09:22, Will Godfrey wrote:
Does anyone know of software that can generate MIDI messages from a touchpad?
If, as I understand it, you mean a latptop touchpad (i.e. thing used
instead of a real mouse with your finger :-) ) Pure Data can definitely
do it in many different ways.
The Pd 'vanilla' way would probably be using a canvas object(s) and
tracking movement as you 'drag' them around.
There are a bunch of Pd externals (i.e. libraries not included in Pd you
need to compile and install separately), which can also do this in
various ways. [1]
Once you have the touchpad detection / setting setup Pd has a set of
inclued midi sending obejects which are really easy to use to send CC,
notes etc.
The idea would be to send CCs to a sequencer or soft synth, but being able to
send it to an external hardware device would also be very useful.
MIDI objects receive/send alsa-midi so you can route them to any
sequencer, synth or hardware device which can receive alsa-midi.
Hope this helps.
Lorenzo.
[0] https://puredata.info/
[1] There is also a Pd 'distribution' which comes packed with many many
externals out of the box, Purr Data: https://www.purrdata.net/
Thanks for all of this Lorenzo. I had been hoping for something lightweight,
however if I can find that round tuit I seem to have lost, this is certainly an
interesting (and potentially flexible) way of solving the problem.
Will.
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