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Re: [cgal-discuss] Have trouble using Named Parameters "face_index_map" in "corefine_and_compute_intersection"


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  • From: Sebastien Loriot <>
  • To:
  • Subject: Re: [cgal-discuss] Have trouble using Named Parameters "face_index_map" in "corefine_and_compute_intersection"
  • Date: Wed, 10 May 2023 08:48:47 +0200
  • Authentication-results: mail3-smtp-sop.national.inria.fr; spf=None ; spf=Pass ; spf=None
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face_index_map is not an output parameter. It is used internally by the code to avoid using a hash map. If you want to track correspondance
between input and output, you should use the visitor:

https://doc.cgal.org/latest/Polygon_mesh_processing/classPMPCorefinementVisitor.html

https://github.com/CGAL/cgal/blob/master/Polygon_mesh_processing/examples/Polygon_mesh_processing/corefinement_mesh_union_with_attributes.cpp

Best,

Sebastien.

On 5/9/23 21:43, "蓝色追风" ( via cgal-discuss Mailing List) wrote:
Hi, all,

I am currently using the CGAL command "corefine_and_compute_intersection" to compute the intersection between two surface meshes. At the same time, I want to determine the face index of the intersection mesh in the original mesh. I noticed that the "face_index_map" in the Named Parameters of "corefine_and_compute_intersection" seems to be able to achieve this functionality, but I am having trouble using it. Could you please provide me with an example code to help me use the "face_index_map" feature?

Thank you for your time and help!

Best wishes,
Daye

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