Drawn circle has torn edges

[kawka-maciej]

What did you do?

Tried to draw a circle.

What did you expect to happen?

Be able to draw a nice, smooth circle using draw.ellipse().

What actually happened?

The circle is torn and the edges are bad quality. Did I do something wrong?

What are your OS, Python and Pillow versions?

• OS: Mac OS Catalina 10.15.6
• Python: 3.6.7
• Pillow: 7.2.0

from PIL import Image, ImageDraw

target = Image.new("RGB", (400,400), color=(255,255,255))

draw = ImageDraw.Draw(target)

draw.ellipse((50,50,250,250), fill=(0,0,0), outline=None, width=0)

target.save('circle.jpg')

[nulano]

Just to be clear, the gray pixels around the outside of the ellipse are JPEG compression artefacts. Saving as PNG produces a slightly better image, but the circle is still not smooth.

[radarhere]

Here is version of this image created by #4523

[kawka-maciej]

This one looks much nicer! Are there any plans when it will be released?

[kawka-maciej]

Is there an easy way to build the .whl locally with the version from the PR? I tried reproducing multibuild pipeline inside a docker container but couldn't get it to work. The wheels that I'm building don't have required libraries (like the Pillow.libs that you get after installing it from pip).

[radarhere]

Is this what you're after? Pillow-7.2.0.dev0-cp36-cp36m-macosx_10_10_x86_64.whl.zip

[kawka-maciej]

Sorry for not being specific. I'm running Pillow inside AWS Lambda so I need a linux x86_64 whl. Can I ask where did you get it from?

[radarhere]

Ah. I presumed you were in the same environment as your original post.

For the releases, Pillow has the pillow-wheels repository, which runs on https://travis-ci.org/. I can create a commit in my fork of pillow-wheels, that

• checks out Pillow with the relevant commit
• removes the Travis jobs that I'm not interested in
• uploads the resulting wheel to https://www.file.io/

And the URL for the wheel is printed - https://travis-ci.org/github/radarhere/pillow-wheels/builds/724418755#L5539

[kawka-maciej]

Works perfectly, thank you very much for the explanation! Is there any way I could help with the #4523 issue so it could be merged?

[hugovk]

#4523 has been merged and will be in next week's release.

[DeusAres]

Can we reopen this? It would really need an antialiasing method. Super sampling is expensive

[radarhere]

@DeusAres could you create a new issue with more detail?