Empty space between line and fill

[R C-R]

3 hours ago, BofG said:

@R C-R can you double check? Export to png as well and zoom in on that boundary.

OK. If I zoom in extremely far (5000% or so) I do see a small amount of antialiasing (not really empty space from what I can tell) but that is easily removed via deactivating anti-aliasing on the layer, as @NotMyFault mentioned earlier.

As I understand it, this is a consequence of Affinity not using true ellipse representations. 

[NotMyFault]

14 minutes ago, R C-R said:

As I understand it, this is a consequence of Affinity not using true ellipse representations. 

I don't think this to be a factor.

You can create the issue with any basic shape, rectangle, circle etc.

The easiest way to spot:

• create new document. smaller size makes it easier, 40x40 px is enough
• create rectangular shapes with defined color (could be same color), perfectly integer sized and positioned and aligned (using transform panel and numeric input). No stroke.
• group them
• rotate group by any angle except multiples of 90°
• select "composite alpha" in channels panel
• zoom in depending on remaining eyesight (mine is quite bad)
• See edges clearly show "reduced" alpha

 

blending fail by anti-aliasing.afphoto

Edited August 22, 2021 by NotMyFault

[NotMyFault]

I created a new post to discuss another (possible) inconsistency when alpha blending colors (based on the same causes of trouble discussed here).

But this time it is not unwanted transparency, it is (possibly) wrong blend colors (too dark, and even hue differs to my expectation). Love to hear your opinion:

 

[R C-R]

29 minutes ago, NotMyFault said:

See edges clearly show "reduced" alpha

I'm not sure what you mean by that or why it is an issue. As I understand it, it is just showing that because the shapes have been rotated so they no longer can be perfectly pixel aligned, which causes antialiasing along the edges. As with the ellipse example, forcing antialiasing off (either for the group or individually for the shapes in it) eliminates any alpha blending, as in this no blending no anti-aliasing.afphoto version of your file.

[lacerto]

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