Hi,
there is an existing method to move the seam of a closed curve
when lofting but not as far as I know for sweep or revolve.

This method to move the seam line of a closed curve works for them.
The photo shows the process the red spheres mark the seam points.
Cheers
Barry

Smart solution Barry ! :)

Here using loft



Move Seam Edge-Seam Point from M-dynamics on Vimeo.

Hi Barry,

I asked the same question here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=9781.7

Michael added a function Sept 10-2020 Moi V4 beta to move the seam point.

Ref:
http://moi3d.com/wiki/V4Beta
Sep-10-2020
Scripts:
Add curve.changeClosedCurveSeam( new_start_parameter, rebuild_circles /*optional, default = true */ );

I have not had the chance to test it.

Wayne

Hi Wayne,
allocated the script to a key (Add curve.changeClosedCurveSeam( new_start_parameter, rebuild_circles /*optional, default = true */ ); )
but could not get it to work.
Any ideas
Cheers
Barry

With the first image of the thread : does we redraw something (loft, revolve, sweep) with the new section , or it's directly modifyed ?

Hi Pilou,
the first image shows how the curves where constructed and when joined the resulting sweep with all the seams.
The second image is the joined curve that as the rebuild command applied and only one seam which position you cannot control.
the third shows the rebuilt curve split where you want seams to be then joined and when swept give 2 seams.
The fourth shows the third curve with 1 seam point removed.
Hope this helps
Barry

Ok!

In what these over numerous seams are ennoyous ?
Seems render engines pass over them ...

Hi Barry,

re:
> allocated the script to a key (Add curve.changeClosedCurveSeam( new_start_parameter, rebuild_circles /*optional, default = true */ ); )
> but could not get it to work.

That's not a complete script, it's one fragment that needs a location for the new seam point.

I've attached a plug-in command that lets you pick a point and then calls that function to modify the seam to that point.

- Michael

EDIT: 2/1/2021 - fixed bug with clicking on clines or axis lines or on intersections between a curve and a cline/axis line.

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