Nope, I'm talking about surfaces not shapes. When I use a planar on a polygon shape I won't get the control points correctly.

I do not understand. :-)

Do you have an example?

- Brian

Control points on a plane created with the Plane tool:


Control points on a plane created with the Polygon curve + Planar:


M.

Hi Max, well you can select your pentagon surface and use ShrinkTrimmedSrf (http://moi3d.com/3.0/docs/moi_command_reference10.htm#shrinktrimmedsrf) which will snug down the underlying surface's control points to hug the active trim boundary so the points are closer to the border.

But you can't have a 5 sided underlying surface itself - it's a fundamental thing to NURBS object structure that the underlying surface has a quad structure with control points arranged in a net of rows and columns.

- Michael

I see, thank you, I guess I can live without that.
Max.

You can join 2 planes together and still have access to the control points at the vertices...

Hi Burr, yes if all the underlying surfaces have matching control points at edges where they join up, it's then still possible to turn on control points for the joined object.

In the more general case where the joined edges are arbitrary trim edges rather than a "natural edge" of the underlying surface then you won't get control points for the joined object but in that case you can still get them by using Edit > Separate on it to break it apart into unjoined independent surfaces.

For others reading this, there is some more information on surface control points and how "underlying surfaces" work in this FAQ answer here:
http://moi3d.com/wiki/FAQ#Q:_Why_does_show_points_work_for_some_objects_but_not_others.3F

- Michael

Yes I know that's how I did it in certain cases, then exported in PDF with hidden tangents ;)
Thank you.
Max.