triplus wrote:Unfortunately i explicitly asked about Arc length constraint. And the answer was it wouldn't be trivial to implement such constraint.
Oh yes, I did notice that – but I think that microelly2 and abdullah continued to talk about "curves" in their answers. (Sorry if I might be wrong!)
triplus wrote:P.S. I am wondering if expressions could be used in combination with existing constraints. I guess it depends on the use case.
Yes, this is possible, at least in 0.17 – for example you can constrain the length of a line in a sketch to the length of an arc (Draft) via the expression "=Arc.Shape.Length"