Offset Curve bug on some paths

Glyphs
1

Some paths get distorted results with the Offset Curve filter.

Take these two paths. The only difference between them is the position of the control handles for the middle node. I don’t know if this is relevant, but in this particular case the distortions only happens when the offset value is between 18 and 62.

https://dl.dropboxusercontent.com/u/8917740/Glyphs%20Offset%20Curve.mov

Offset Curve problem.glyphs.zip (2.3 KB)

2

it is trying to intersect the two offsetted curves and picks the wrong intersection.

3

Yup. Offseting bezier path is a really tough thing to do and there is no correct answer. Even Illustrator doesn’t give you good results.

4

I see. Do you think there is a way to fix it or should I get used to work around it?

5

I fixed it.

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