Orient control points on planar surfaces?

Hi, is there a way to orient or choose the direction of the control points in the command PlanarSrf?
I often have to make surface details and a practice I do a lot is to draw the shapes planar, then use PlanarSrf and then ChangeDegree to add more points and tweak it a little:

I think it would be great if one can just orient the “structure” or something like that so the new points flows with the shape.

Thanks for your time.

I’ll see if I can make you something, I might even have a planar surface orienter someplace.

@DiegoKrause - see if this is ok for a start - it works on planar surfaces and brep faces.

@DiegoKrause - updated to work on planar surfaces with holes…
@DiegoKrause - updated to work on brep faces

To use the Python script use RunPythonScript, or a macro:

_-RunPythonScript "Full path to py file inside double-quotes"


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The option to choose in which C-Plane the command PlanarSrf should build the surface would be nice.

In that case you could simply create a custom C-Plane and create the surface

thanks so much
it works exactly as I imagined it

OK. There is a bit more to do - holes are ignored at the moment, for example. (fixed, above)