Hi Michael,
thank you works a treat.
Barry

Hi Pilou,
being able to move the seam is not to improve render.
An example of a problem and how being able to move the seam helps is shown in the photo.
Cheers
Barry

@ Barry
Indeed! Many thanks for the enlighting example!

Made the French ChangeClosedCurveSeam (V4) here with the English so Done & Cancel :)

but seems there is a BUG, not for the action itself but for selection another one...
(MarkCurveStart for control result - ChangeClosedCurveSeam)

this script will be usefull !
draw rectangle -> fillet, run script
same results : on corner throw error, on curved nothing happends

Yes, strange problem...

I had the same problem as Pilou, but after more tests I can't reproduct the problem...

Another strange reaction is, on a non soft curve (with hard points) the script add a new hard point.
Exemple :
I do a rectangle.
I add filet on the angles.
If I use the script it adds a new hard point.
If I reuse the script it adds a second new hard point.

But If I do a rectangle, filet it and use the reconstructCurve plugin, next each time I use ChangeClosedCurveSeam, the seam is moved (not added).

Hi Tudor,
The script is for use with closed curve with one seam.
Your example needs the rebuild command first thus reducing it to a one seam curve.
Cheers
Barry

Hi Pilou,
I can replicate your error by activating the construction line to position the seam point.
Did you do this ?
Barry

Something like move the new point clicked to the old one and reclick...
and repeatable...at each time that bug (i repeat the function by Right Click)

The bug was if you clicked on a construction line or axis line or at an intersection snap between a curve and a construction line or axis line.

I've updated the attachment above with a fixed version.

- Michael