Gsoc2023, stand-alone interactive program that demonstrates 2D arrangements embedded on the sphere

[efifogel]

Summary of Changes

A stand-alone interactive program that demonstrates 2D arrangements embedded on the sphere. In particular, the program (i) reads a database of all administrative boundaries of the countries in the world, (ii) displays the globe with all countries and land covered by water (which is land not covered by countries) on a window, and (ii) enables interaction with the user. The user can rotate the globe and zoom in and out, and she or he can perform point-location queries to select countries. When a country is selected, it is highlighted.

This program has potential to grow and support many more features.

This program was developed by Deniz Diktas as part of the Google Summer of Code 2023.

Release Management

• Affected package(s): Aos_2
• Issue(s) solved (if any): Demonstrating 2D Arrangements Embedded on the Sphere #7656 , Demonstrating 2D Arrangements Embedded on the Sphere
• Feature/Small Feature (if any):
• Link to compiled documentation (obligatory for small feature) wrong link name to be changed
• License and copyright ownership: TAU

TODO:

• check branch size (a task for @sloriot)

[sloriot]

Successfully tested in CGAL-6.0-Ic-21[56].

However the size of the branch is 11MB. I need to have a closer look

[github-actions]

This pull-request was previously marked with the label Tested, but has been modified with new commits. That label has been removed.

[sloriot]

@lrineau ne_110m_admin_0_countries.json is 7.7M, (929K compressed) and the branch is 1.2M.

[sloriot]

/mnt/testsuite/test/Arrangement_on_surface_2_earth_Demo/Aos.cpp:1333:9: warning: typedef ‘using Point_2 = CGAL::Arrangement_on_surface_2, CGAL::Arr_spherical_topology_traits_2, CGAL::Arr_face_extended_dcel, std::__cxx11::basic_string > > >::Point_2’ locally defined but not used [-Wunused-local-typedefs]
/mnt/testsuite/test/Arrangement_on_surface_2_earth_Demo/Aos_triangulator.cpp:224:11: warning: typedef ‘using Faces_ = class std::vector >’ locally defined but not used [-Wunused-local-typedefs]

[efifogel]

Regarding my previous commit, I had a moment and tried the demo on a much more simple faked map, and noticed that the rendering was busted, so I fixed it.
I don't plan to make more changes in this PR.
Thanks for your last fix of the warnings.

[sloriot]

Successfully tested in CGAL-6.0-Ic-228

(@lrineau you did not react to #7678 (comment))

[lrineau]

@lrineau ne_110m_admin_0_countries.json is 7.7M, (929K compressed) and the branch is 1.2M.

Well, as far as I understand, there is nothing we can do. We will keep it as it is.