Re: Other graphic issues

[Eric Wasylishen]

I haven't had a look at Fisicalab yet, but something which may or may not be 
related is the artifacting I get in GSTest/ImageSelection-test. It happens when 
moving the sliders to adjust the image size; the image can leave lines as it's 
being resized, but the same code works fine on OS X. 

The artifacting seems to to come from calling [aView setNeedsDisplayInRect:] 
with a non-integral rect. I suspect at some point the rect coordinates are 
being floor()'ed, which would be incorrect. If we mark a (possibly 
non-integral) region of a view as needing to be redrawn, at some point we'll 
need to compute a pixel aligned version that completely encloses the original 
rect.

-Eric

On 2011-09-05, at 3:47 AM, Fred Kiefer wrote:

> On 05.09.2011 02:26, Germán Arias wrote:
>> Currently when I select an element in FisicaLab an ugly lines appears.
>> See attached image. I'm using cairo backend.
> 
> I tried to reproduce this behaviour with Fisicalab 0.2.1 and current SVN 
> GNUstep code and failed to get these artefacts. I am using the cairo backend 
> as well.
> 
> Could you please give some more details on how to reproduce this?
> 
> _______________________________________________
> Gnustep-dev mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/gnustep-dev