Support AsWinding in pathkit

[一丝]

In Opentype fonts, fill-rule only supports nonzero mode, and there is no API to modify fill-rule and remove overlaps in the pathkit API. In skia this should be the AsWinding function, hopefully it can be exposed to pathkit.

Finally, I hope that the function of pathkit can be aligned with Python's skia-pathops module.https://github.com/fonttools/skia-pathops/issues/10

[kjlu...@google.com]

I believe the winding type of a path can already be changed in PathKit using the setFillType API

https://github.com/google/skia/blob/f37b23d2ef1b32964e1b7e37d19f952bf38531a0/modules/pathkit/pathkit_wasm_bindings.cpp#L493

For example
path.setFillType(PathKit.FillType.WINDING);

I believe the underlying Skia setting, SkPathFillType::kWinding, is the nonzero mode you describe.

Let me know if this existing API is not sufficient.

[一丝]

This is not enough, I need to acquire the ability of asWinding. I submitted an issue: https://bugs.chromium.org/p/skia/issues/detail?id=11858

[一丝]

Because directly setting path.setFillType to nonzero mode does not change the winding direction of the path.

[一丝]

Is there any progress?