Nurbs editor

[gara01]

This is a great news! What we can do for help you?

[gara01]

This is a link collection of NURBS editor, I Hope can help you https://www.blender.org/forum/viewtopic.php?t=18026

[keithsloan52]

Would those developing Nurb Editors please see viewtopic.php?f=8&t=18259
and post you views.

Thanks

[microelly2]

Some new generic surface types with random test data


examples here:
http://freecadbuch.de/doku.php?id=blog: ... _und_torus

[gara01]

Hi Microelly2, I have installed the Nurbs Editor plugin, but I wasen't able to use.

I have found a video where an important design Company uses the same workflow that i want create, but i want use only Blender and Freecad.
This is the Video: https://www.youtube.com/watch?v=vAONd8DydxA

I have find also how is possible import the obj/stl file from Blender to Alias for create a Nurbs surface and export file iges/step: https://www.youtube.com/watch?v=bzgIV3q ... 1LSzptm7C2

There is also a pluging for Moi3d that transform the polygon file in Nurbs, but it is not parametric and it works only with quad mesh: https://www.youtube.com/watch?v=8BhtWMy6A-4

I hope this information can help

[microelly2]

Hi Microelly2, I have installed the Nurbs Editor plugin, but I wasen't able to use.

To help you I need a description what fails.

I have found a video where an important design Company uses the same workflow that i want create, but i want use only Blender and Freecad.
This is the Video: https://www.youtube.com/watch?v=vAONd8DydxA

There is a method to import nurbs from Blender to FreeCAD.

I have find also how is possible import the obj/stl file from Blender to Alias for create a Nurbs surface and export file iges/step: https://www.youtube.com/watch?v=bzgIV3q ... 1LSzptm7C2

The main task will be to reduce triangle meshes to quad meshes. There is a lot of theory but still no running script.

There is also a pluging for Moi3d that transform the polygon file in Nurbs, but it is not parametric and it works only with quad mesh: https://www.youtube.com/watch?v=8BhtWMy6A-4

transform quad meshes to nurbs subfaces is not a problem.
the import of quad mesh structures is done in the geodat workbench

viewtopic.php?f=8&t=6973&start=110#p135536
viewtopic.php?f=3&t=18445

the main task is to split the surface into superquads that can be mappend 1:1 to nurbs.

what I want sometime in the future is to postprocess the objects of makehuman: http://www.makehuman.org/

I hope this information can help

yes, thank you for these links. good to know the direction where to go.
No time for boredom.

[gara01]

That is what I'm searching

How can I do transform the polygon quad mesh in nurbs?

[microelly2]

How can I do transform the polygon quad mesh in nurbs?

If you have a quad mesh detail in form of a 2d vector array pts=[[v1,v2,vn],[v21,v21,v2n], ...[..]]

you perform a

bs=Part.BSplineSurface()
bs.interpolate(pts)

and then you get the poles

bs.getPoles()

and you can start postprocessing

[gara01]

Sorry for my ignorance. I have created a Cube with Blender and export it in Obj format, but when i import the Cube, Freecad transform the Cube in triangle mesh. What am I doing wrong?

[bejant]

What am I doing wrong?

Probably nothing because the mesh is always made of triangles, so any flat rectangular face will always be composed of two triangular faces.

I think you posted your question in the wrong topic though...