How to create arc with CrossSection ?

[rsaccon]

Is there any recommended way to create arcs with CrossSection? With just what CrossSection provides, I can only think of creating them from a polygon.

My use cases: rounding corners of a polygon CrossSection which will be extruded later.

Maybe another way to do it might be to Smooth the Manifold from the the extruded CrossSection, but then I have to turn the Manifold first into a mesh and define the half-edges and I will be far a way from the beautiful high level API the manifold Library provides.

[elalish]

CrossSection has an Offset method where you can choose round corners, so that might help if the arcs have uniform radius. Generally in CSG you make arcs with unions of circles and rectangles. I doubt you'd want Smooth as that will leave all your inputs verts unmoved, so it's quite different than rounding off corners.

[rsaccon]

That's great and soooo easy ! Thanks a lot.