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Hi @facorread , I think I prefer to postpone fixing this issue until we are publishing next major release.
One reason is - due to current integer backend coordinate constraint, the default rasterization code must consider anti-aliasing, and this is going to change when we move on to a backend that supports float point backend coordinates - and this will make the anti-aliasing algorithm easier to implement.
So I just fixed the part that is easy enough to fix - but for the ring filling one, I'd like to revist this later.
Describe the bug
The anti-alias algorithm seems to be wrapping in the horizontal direction. As a consequence, the images below show artifacts.
Additionally, the antialias pixels do not cover the circles uniformly. They are even absent at some angles.
Finally, there are additional lines on the filled circle to the right.
To Reproduce
The following two examples come from 0f2d3d8:
Version Information
Using Plotters from the GitHub master
The examples above use the
BitMapBackend
. TheSVGBackend
seems unaffected.See also
#128
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