"Interpolate NURBS Curve" node - FreeCAD implementation

[rendetto]

I started working on this implementation. It doesn't have metrics originally but I plan to add the usual ones.

[rendetto]

One step ahead. The option "Cyclic" now works:

[rendetto]

PR #4889 is ready for review. Unfortunately the option of setting "EndPoint Tangent constraints" has a bug and it's not usable in it's current state. So it's not supported at this stage. All the other options are available.

EDIT: The option of switching on and off the individual per point tangents is also unavailable because the result seems affected from the above mentioned bug.

[rendetto]

It turns out that there is an undocumented interpolation parameter in FreeCAD. This parameter I found in OCCT documentation and it affects how tangents are calculated. So the above statement that there is a bug is not true.

I'm up to implement all the missing options including "EndPoints Tangent constraints" and "PerPoint Tangents ON/OFF Flags"

[rendetto]

I updated the PR. Now all options are available.

[rendetto]

The above changes are merged into master :)
I'm closing this issue.