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Re: Other graphic issues
From: |
Eric Wasylishen |
Subject: |
Re: Other graphic issues |
Date: |
Tue, 6 Sep 2011 12:44:48 -0600 |
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?
>
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