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Re: [cgal-discuss] Question about 2D Visibility


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  • From: "Sebastien Loriot (GeometryFactory)" <>
  • To:
  • Subject: Re: [cgal-discuss] Question about 2D Visibility
  • Date: Fri, 24 May 2019 09:28:50 +0200
  • Authentication-results: mail2-smtp-roc.national.inria.fr; spf=None ; spf=Pass ; spf=None
  • Ironport-phdr: 9a23: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

In this example:


https://doc.cgal.org/latest/Visibility_2/Visibility_2_2simple_polygon_visibility_2_8cpp-example.html

the query is q a user given point.

Sebastien.

On 5/21/19 12:03 PM, Andy Li wrote:
Hi there,

The example file of "Visibility_2/general_polygon_example.cpp " shows the
visibility of a vertex which is on the polygon. Could you please give me an
example of how to judge visibility of a vertex which is in the polygon area?

Best regards,
Andy Li.



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