Re: [LAD] Mouse/knob interaction

Excerpts from Arnold Krille's message of 2010-09-08 19:18:54 +0200:
> On Wednesday 08 September 2010 16:35:31 Andrew Bryant wrote:
> > Previously:
> > > That's actually a neat idea, color for immediate visual feedback. I
> > > imagine the problem is the colors. What would be sane? I guess three
> > > basic colors and interpolate between them?
> > > low = blue
> > > middle = yellow
> > > high = top
> > >
> > > It needs to be rather intuitive. I guess the more colors the less
> > > intuitive it will become. Maybe two are enough.
> > > I wonder which color would best represent 'low' or 'bottom'.
> > > Blue, black?
> >
> > I suggest you keep it simple, i.e. only two colours if possible, but
> > make them configurable for the benefit of those with visual disabilities.
>
> Two colors simply isn't enough. You need a color for low, a color for middle
> and a value for high. And then you haven't even looked at a fourth color for
> mute/off.
> And fading from green directly/linear to red gives an ugly brown in the
> middle. It looks much nicer to go across yellow. And then you can really use
> that third color to stand for a special step, not just "in the middle of the
> slider".

If all you want is 'middle' and that doesn't need to be well defined,
then two colors will do. I suggested blue because of the ugly brown you
get between green and red. With blue the middle will likely be some kind
of purple, which may or may not be optimal. Maybe black to red would be
nicer, it just gives you an increasingly bright red.

Mute/off, if required, would be the same as the lowest setting.

> If these colors are taken from the color-scheme the user has chosen, I feel
> confident, that these are suitable for all kinds of color-blindness (otherwise
> the color-scheme is chosen wrongly). But I don't know (yet) which color roles
> to use from the color-schemes...
>
> Have fun,
>
> Arnold

To what kind of user chosen color scheme do you refer to?

-- 
Philipp
--
"Wir stehen selbst enttäuscht und sehn betroffen / Den Vorhang zu
und alle Fragen offen." Bertolt Brecht, Der gute Mensch von Sezuan
_______________________________________________
Linux-audio-dev mailing list
Linux-audio-dev@lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-dev