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List:       kde-core-devel
Subject:    Re: [Fwd: Usability and open source]
From:       Richard Moore <rich () ipso-facto ! freeserve ! co ! uk>
Date:       2000-01-31 14:58:52
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Ben Last wrote:
> 
> > From: Richard Moore [mailto:rich@ipso-facto.freeserve.co.uk]
> >...I know this is not true in practice, but it emphasises
> > the need for real world testing to make a sensible evaluation.
> Indeed - and real-world testing is the only final arbiter :-)

Definitely.

> 
> > True, but the question then becomes how do you measure the distance? Given
> > that the mapping between mouse movement and pointer movement is not fixed
> > (because of mouse acceleration)
> Nope, that's true, but it *is* learnable.  It has a response that is within
> basic human capabilities to model unconciously and to predict, especially when
> combined with visual feedback.  I still think messing with it is nasty :-)

I agree, however as I said before the movement is tiny. Usually only a
single pixel! By tracking the virtual distance moved I ensure that the
pointer remains where you expect it to be. I think you may be pleasantly
surprised.

> Mind you, I always hated those interfaces that "warped" the pointer to the
> default button - I always lost the pointer and had to scrub the mouse around to
> find it again.

I detest that too.

> 
> > I have tried to ensure that this does not happen, we'll see whether I got
> > it right in a few days.
> Great - look forward to that...

I'll try to make it work tonight, but there is a big football match
today so it might be delayed until tomorrow.

Cheers

Rich.

> 
> regards
> ben

-- 
     Richard Moore		rich@ipso-facto.freeserve.co.uk
http://www.robocast.com/	richard@robocast.com
http://developer.kde.org/	rich@kde.org

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