UV on a Brep

Hello, can anyone help me get the UV on this mushroom?

I know it has to be a surface, but the loft command gives a Brep which I can’t turn to a Srf.

I manage to get the points on the Brep, but I can’t go any further

Any help is most welcome

Thanks a lot

Attachments:

Test Brep to SRF.gh, 12 KB
Mashroom Srf_01.3dm, 318 KB

Replies to This Discussion

Permalink Reply by Jens Pedersen on April 9, 2015 at 5:18am

A slightly silly suggestion and question, are you using circles or curves to build your mushroom?

Because if you are then try and either rebuild the circles or divide the circles with a high number and then do a periodic interp curve through the points and the loft again... Might fix the problem, I know that if you are using arcs they need to be rebuild, cant remember if that goes for circles as well... or at least it used to be like this back in the days... hehe

Permalink Reply by Chris on April 9, 2015 at 6:29am

I use ellipses.

I rebuilt them & the loft now is a surface. That’s great!

I need to change the UV direction though & the Flip Matrix doesn’t seem to work properly.

When I interchange the imputes for U & V, there’s only 1 curve produced in V direction

Attachments:

Test Brep to SRF_02.gh, 14 KB

Permalink Reply by Pieter Segeren on April 9, 2015 at 5:25am

Hi Chris, I would advise you to figure out a way to align the curves to loft beforehand. Then you don't need the Align option in the LoftOptions, which seems to cause the Brep output (instead of untrimmed surface)

Permalink Reply by Chris on April 9, 2015 at 6:50am

Hello Pieter,

You are right, with the Align Sections option unticked, I get an untrimmed Srf.

Any idea how I can change the UV direction of the Srf? Flip Matrix doesn’t seem to work.

Permalink Reply by Pieter Segeren on April 9, 2015 at 8:02am

If you have Lunchbox, you could use its ReverseSurfaceDirection component. (With ReverseOption = 3)

You can also take a VB scriptable component and use:

Private Sub RunScript(ByVal S As Surface, ByRef A As Object)
A = S.Transpose()
End Sub

Permalink Reply by Chris on April 9, 2015 at 8:29am

Hello,

I don't have Lunchbox & i've never used a VB component before.

Is it too much to ask for extra help ?

Permalink Reply by Pieter Segeren on April 9, 2015 at 8:42am

Well, you could download Lunchbox...

or use the attached.

Attachments: