Re: [LAD] Mouse/knob interaction

On Tue, 2010-09-07 at 20:24 +0100, Chris Cannam wrote:
> On Tue, Sep 7, 2010 at 7:23 PM, Gabriel M. Beddingfield
> <gabrbedd@email-addr-hidden> wrote:
> > circle: no.
> > up and down: yes.
> > scroll wheel: yes.
> > left and right: up to you.
>
> Agreed on all counts. Of course you can make them respond to
> horizontal motion as well, without screwing up people who expect
> vertical motion, by taking the max of horizontal and vertical
> displacement as the displacement to use.
>
> You don't give quite enough information, though -- there is some
> discrepancy out there with regard to whether moving the mouse up
> should move the rotary towards the start or end of its travel (i.e. up
> = anticlockwise, down = clockwise or the reverse). I had to go and
> test some rotary controllers to remind myself which behaviour my hand
> expects, and it turns out it's up = clockwise.

That's a funny thing, because I've been looking at some radio equipment
with a big rotary knob to scroll through menu options. Turning the knob
clockwise moves the pointer up, and turning it anti-clockwise moves it
down - utterly unintuitive! Perhaps it's because the scrolly knob is to
the right of the display, so the edge of the knob that moves up should
"follow" the cursor? Without getting the drill out, I can't try the
knob and screen the other way round, and I suspect that the manufacturer
would be unhappy with that.

Gordon MM0YEQ

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Received on Wed Sep 8 00:15:07 2010