Trouble with extruded surface slice deconstructing

Dear All,

I would like to get some help regarding a problem I faced in slicing extruded surface.

Probably it is my fault, as I am new in Grasshopper, I just started to learn it few days ago.

I am willing to make a parametric industrial box building as an exercise.

The problem is that DeConstruct Brep fails for some of the polylines which are created by slicing an extruded surface by Contour.

This is how my extruded surface looks like.

After I sliced it with Contour I got all the cross sections.

When I want to DeConstruct Brep of result polylines some of them fails. (2 from 6 inputs).

Attached GH file contains the complete geometry, I modeled everything from GH, no input linked from Rhino model.

Learning_04.gh

Could you give me an advice where I made a mistake?

Thank you in advance for your replies.

Best regards,

Henrik Magyar

Attachments:

Learning_04.gh, 40 KB

Replies to This Discussion

Permalink Reply by Pieter Segeren on January 1, 2016 at 5:05am

Hi Henrik,

the DeconstructBrep component is meant to be used on breps, not on curves. The reason it does work for some curves is that the (planar) input curve gets cast to a brep (if possible) inside the DeconstructBrep component.
You could use Explode on the contours you found, and ShiftList (shift +1, wrap = False) on its vertices output. Another way would be to use BoundarySurface on the contour and then use the DeconstructBrep component on that.