converting sharp corners to curve makes it smoother,
just select the tool the type the value of curving then click on a corner to apply to this corner .
that's how i think it should work if there is a better suggestion please post .
What is a corner?
A place where two lines intersect at their end? Or any intersection?
Or is this just applicable on polylines?
The resulting arc should be part of the new "group"? If so, we need to implement group first.
Please post more infos.