Mesh Normals

Hi,

is there a way to flip mesh normals in grasshopper? Or something like unify mesh normals?

Thanks, Wieland

Tags: normals

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Permalink Reply by taz on November 27, 2011 at 12:33pm

Wieland,

uto's Mesh Tools have a [Unify Vertex Normals]... Mesh faces, by definition, don't have face normals.

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Permalink Reply by David Rutten on November 27, 2011 at 12:59pm

Actually mesh faces do have normals. It's a bit ambiguous in case of quads, but Rhino relies on face normals for display purposes. There is a Face Normal component in the standard grasshopper component set, but I haven't made anything that allows you to change face normals.

Do note that often face normals are computed by Rhino because they follow from the shape of the mesh, you typically don't manually assign them.

David Rutten

david@mcneel.com

Poprad, Slovakia

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Permalink Reply by Wieland Schmidt on November 27, 2011 at 4:35pm

@ taz

Thank you, I totally forgot about uto's very helpful Mesh Tools...

@david

yes, I mainly need to unify the normals for display purposes. If I mirror a mesh I get a strange looking model.. its not dramatic, I can unify the mesh normals in rhino. Would be nice, to do this in grasshopper though.