Add CGAL to users.adoc

[afabri]

Before submitting

• This PR targets the develop branch.
• I searched for an existing PR or issue covering the same change.
• My contribution is licensed under the Boost Software License 1.0.

Type of change

• Bug fix
• New feature or API addition
• Refactor (no behavior change)
• Documentation
• Build, CI, or tooling
• Other (specify below)

Does this PR introduce a breaking change?

• Yes (describe migration impact below)
• No

What this PR does

This PR adds a link to the chapter of the documentation of the CGAL Library to the list of projects using the BGL

Motivation

First, CGAL provides models to the boost concept Graph. This enables to run any BGL algorithm directly on a triangle mesh.
Second, inspired by the design of the BGL, we add the concept FaceGraph which has a face_descriptor. As meshes have an embedding, we exploit that edges are sorted around vertices.

Testing

I only added a URL

Checklist

• Existing tests pass (b2 in the test/ directory).
• New behavior is covered by a test, or this is a docs / build / refactor change.
• Documentation was updated if user-facing behavior changed.
• No new compiler warnings on the platforms I built against.

[cppalliance-bot]

An automated preview of the documentation is available at https://594.graph.prtest3.cppalliance.org/libs/graph/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-09-08 07:07:04 UTC

[afabri]

If the maintainers were interested, we can also provide a page similar to the page concerning LEDA. Although, I must say that I do not like the word "conversion", but prefer "adaption", as conversion sounds like creating a new representation.

[Becheler]

Hi @afabri ! Good to hear from you !
I hope you're well ! We would be happy to see a page similar to LEDA or Stanford Graphs !
If you don't like the word conversion, maybe the Stanford page rewrite is a bit more clear.
Let us know if you need help in any way 😄

[github-actions]

Boost dependency footprint vs develop (auto-generated).
PR run 34197171894 vs develop run 34059816381 (05e34114d4).

Header-inclusion weights (graph files pulling each direct dependency in):

No header-inclusion-weight changes.

Transitive Boost modules: 47 → 47 (0)

[github-actions]

Compiler-warning counts vs develop (auto-generated).
PR run 34197171767 vs develop run 34059816363 (05e34114d4).

Job	Baseline	After	Delta
macos (clang, 14)	444	444	0
macos (clang, 17)	407	407	0
macos (clang, 20)	407	407	0
ubuntu (clang-19, 14)	444	444	0
ubuntu (clang-19, 17)	407	407	0
ubuntu (clang-19, 20)	407	407	0
ubuntu (clang-19, 23)	407	407	0
ubuntu (gcc-14, 14)	373	373	0
ubuntu (gcc-14, 17)	369	369	0
ubuntu (gcc-14, 20)	369	369	0
ubuntu (gcc-14, 23)	369	369	0
windows_msvc_14_3 (msvc-14.3)	961	961	0

[codecov]

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