How to detect the closed body?
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I would like to detect if a body is closed,so all the faces are connected.For example,if I check the cube with additional unconnected line or face,I should detect the cube.So how to loop faces and edges to find that the body has no holes?
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Solid Inspector by Thomthom ?
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Thank Pilou.
I have fount this interesting in the Solid Inspector plugin:# Any edge without two faces means an error in the surface of the solid.But this is not enough to detect a potential solid, because not all edges with two faces means the solid.
There is still a definition missing,what combination of edges and faces makes a solid.
Any tips?
The award will be a useful and free plugin
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@voljanko said:
But this is not enough to detect a potential solid, because not all edges with two faces means the solid.
I thought this was enough? If there is an Edge with only 1 Face, then there is a hole in the solid. If there is an Edge that has 3 or more Faces, then there is an internal Face.
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I have difficulty conceiving some 3d geometry where all edges do have two faces but it isn't a solid ?? As Jim says a tetrahedron is the simplest form buy if you add any internal partitions or have 'flaps' then there will always be some edges which have <>2 faces!
Doesn'tgroup.manifold?also return false if the group is NOT 'solid' ? [there's a similar test withcomponent_instance.manifold?] Then you don't need to worry about testing edges/faces ?
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Ok,I like this definition:If all the edges in the geometry have 2 faces ,it is a solid.
Maybe I have complicated a little
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