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[cgal-discuss] read_ply manifold restriction


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  • From: Sebastien Tourneux <>
  • To:
  • Subject: [cgal-discuss] read_ply manifold restriction
  • Date: Thu, 11 Jan 2024 12:37:45 +0100
  • Authentication-results: mail2-smtp-roc.national.inria.fr; spf=None ; spf=Pass ; spf=Pass
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Hello,

I was wondering why is there a condition about the manifoldness of the mesh when reading a PLY file using `CGAL::IO::read_PLY` ?

From the documentation : "Precondition The data in the stream must represent a two-manifold. If this is not the case the failbit of is is set and the mesh cleared."

If I skip the checks (such as `fi == Surface_mesh::null_face()`) in the reader code, the model load just fine, but I don't see a parameter to bypass this restriction without patching the code.

Example PLY file : https://people.sc.fsu.edu/~jburkardt/data/ply/airplane.ply

Thank you

-- 
Sebastien Tourneux



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