can gh help with this ?

Replies to This Discussion

Permalink Reply by David Rutten on December 1, 2015 at 6:20am

Your shapes intersect and they are not closed, so without substantially fixing the geometry first I doubt you'll be able to get a good skin mesh.

Permalink Reply by Fabrice on December 1, 2015 at 7:07am

you're right

but with this approch, i expect to have a good mesh

by extruding all triangles and merging every polygon

the problem is that cleaning with automatic software put some impredictable holes in the model. i'm searching a way to avoid this

maybe i'm not in the right path!

Permalink Reply by Amir Soltani on December 1, 2015 at 7:21am

You can try the beta version of Autodesk Memento:

https://memento.autodesk.com/about

Permalink Reply by Fabrice on December 1, 2015 at 8:21am

thanks i will try

but i don't want to miss the occasion to learn GH

can someone tell me how to take a mesh

select all non vertical surface

extrude to the ground

thanks

Permalink Reply by martyn hogg on December 1, 2015 at 12:16pm

You could use the Rhino drape feature (possibly) to drape a surface ove the top or there are similar shrinkwrap functions in some mesh software (such as Magics by Materialise - expensive)

People have done some mesh shrinkwrapping in GH so if you really did want to learn GH then this might be one approach.

Your approach might work... I don't have time to look at this right now but in simple instructions...

Get all mesh face normals using DeconstructMesh

Work out the dot product of these vectors with the unit Z vector

Cull the mesh faces that have a dot product = 0

I'm not sure how you then extrude the mesh faces to make a solid... Also I don't think this is the best way to do what you need to 3d print.

Permalink Reply by Fabrice on December 1, 2015 at 8:46pm

i tried memento and it failed!

thanks martin

i will try to devellop your definition (if i can! )

amazing, never heard of this shrink wrapping

it is certainly the best solution

i will try to learn more on this

thanks