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The ExtractMeshEdges command separates edges from the parent mesh determined by an angle between mesh face normals.
The command may help if you have a mesh that came from a polysurface but no longer have the polysurface. Using the command with the Unwelded option creates polyline approximations of where the edges of the polysurface were.
Command-line options | |
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Extract edges by |
UnweldedExtracts edges with coincident vertices. Break angleThe angle between the face normals of adjacent faces. Greater thanSpecify a minimum break angle. Select EdgeSpecify an example edge to set the minimum break angle. Less thanSpecify a maximum break angle Select EdgeSpecify an example edge to set the maximum break angle. |
Join results |
Joins the resulting curves. |
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The ExtractNonManifoldMeshEdges command separates from the parent mesh non-manifold faces.
Edges of polysurfaces or meshes that have more than two faces joined to a single edge are non-manifold.
The illustration shows polysurfaces with non-manifold edges highlighted with the ShowEdges command.
Collapse mesh faces and vertices
Rhino for Mac © 2010-2017 Robert McNeel & Associates. 24-Oct-2017