Sub-pixel positioning

Boudewijn Rempt boud at
Thu Mar 18 14:20:53 CET 2004

On Thursday 18 March 2004 14:14, Adrian Page wrote:

> Yes, it has tilt. Haven't played around with it much yet but Painter uses
> it so that you can point the airbrush in different directions, producing
> ellipses or circles. I had wondered what tilt was used for until I saw
> that. Very nice.

That's effect I wanted to have in our airbrush tool. I'm still working on 
something better than just a timer that increases opacity when you hold 
pointer in one place.

> I've managed to get it to work in krita now but something odd is going on
> as it's impossible to draw straight lines (with the brush tool). They're
> always rough and jagged, as though my hand was shaking badly. The strange
> thing is that even if I put a ruler on the pad and draw along the edge of
> that, it's still rough and jagged. Haven't investigated why yet, but it
> works fine in the gimp.

Strange -- I never had that problem when my graphire was still working -- but 
that's a lot of hacking on KisPainter ago. Qt has a simple example for 
tabletEvent -- does that show the same thing? 

Boudewijn Rempt |

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