Mesh Differance

I'm trying to create a workflow to replicate a fabrication technique. What I'm doing at the moment is drawing a shape in Maya, I export the curves from this shape and the mesh into rhino which i then reference.

I want to ultimately end up with the negative of the pipes as shown in the third picture with the gaps between them infilled with the original mesh. Can anybody offer a solution?

Attachments:

Detail component 1.3dm, 5 MB
Detail Compnent 1.gh, 7 KB

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Permalink Reply by martyn hogg on February 22, 2015 at 1:35pm

I'm not sure why this doesn't work. I tried just doing a Rhino Mesh Boolean with the big mesh and one of the pipes and this doesn't work either... you get the same sort of shattered effect along the edges of the pipe.

When I've had problems with mesh boolean in the past, I have had to make sure that all meshes are valid... i.e. no inverted mesh faces, no naked edges, no non-manifold edges etc.

The mesh face normals for both the main mesh and the one pipe mesh I looked at seem good. And there doesn't seem to be any non-manifold edges, naked edges or anything else obviously wrong with the meshes.

I also tried doing a meshsplit with the maya mesh and a simple spherical mesh. This gives the same strange shattered effect.

Then I tried splitting the pipe with the sphere... same shattered effect!

Then I tried splitting the sphere with the pipe and this worked!

Tried splitting the sphere with the maya mesh... this worked also!

I'm stuck now! But this might be a clue... why can you split the sphere with either the pipe or the maya mesh but not split the maya mesh or the pipe with anything???

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