First to @weightless and @ingox : thank you, for the great work on this.
Very cool! And I very much appreciate how promptly you solved the problem.
Am very sorry to say on the other hand, I did not state the problem as accurately and succinctly as I should have.
To the problem, as stated, the solution is perfect.
The problem, stated more directly (not doing the abstracting in the writing of the use-case (common pd-forum user-problem?)):
"I want to be able to add a slider to Mobmuplat (MMP) and have it self-center like a bend-wheel/tremolo-bar, and then send its resultant value over LAN as an OSC signal to my laptop with pd on it. And MMP is vanilla-only. (So no iem-guts.)"
Note: the wonderful, iOS app, "Syntien" (an OSC-gui design tool) has a property on its slider like this, "return to center". (Only handheld-app I have ever bought).
(I'll double check the above...) Yes. The above scenario is correct.
Seems such a control, would prove useful to not only me, but a wider audience. (Maybe?)
p.s. I approached the above problem by placing aerially-speaking "drag" on the slider, so incrementally it subtracted from the slider value then sent it back into the slider. The result was stack-overflows.
Any ideas on this front would be great.
Thanks, again, for the effort put into the solution of the original use-case.
Please, accept my apologies for not having been more forthcoming to begin with.