Re: [Algorithms] mouse smoothing

[Tom P. <ga...@fa...>]

>> Yeah, there is some non-trivial approach to doing this, and it's done by
>> the OS. :-)
>>
>> In Windows, you can adjust parameters related to this. The most notable
>> (in my opinion) is the acceleration slider which is a power function on
>> the velocity.
>
> That's not doing any smoothing either, though; quite the opposite, it
> further exaggerates the input mouse motions.

I had guessed that it downward expanded slow movement, too, but I never
really dug into it to see for sure.  There is the mouse speed slider, too,
though, which scales the velocity linearly, which could "damp" the motion
in a different way.

> There's no point in smoothing mouse input, really; unlike most input
> devices, mice don't have any appreciable noise in their output. All the
> smoothing does is make everything feel laggy.

I wonder, though, if the input is noisy but is sufficiently filtered by
the software path.  I mean some of these mice claim 1000dpi, I can't
imagine they're not going to have some jitter at the hardware sampling
level.

-tom!

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