Get the last picked item

[sloriot]

You can now do:

  Random_points_in_triangle_mesh_3<TriangleMesh> g(mesh, r);
  Point c = *g;
  face_descriptor fc = g.last_item_picked();

to get the normal of the picked point

cc @huang46u

[afabri]

"picked_item" sounds strange. Could the value type be a struct with a conversion operator to point/face_descriptor/pair<point/face_descriptor> ?

[afabri]

Do we want the equivalent functionality for tetrahedral mesh boundaries ?
On this page the word Mesh_complex_3_in_triangulation_3 should be replaced with MeshComplexWithFeatures_3

[sloriot]

"picked_item" sounds strange. Could the value type be a struct with a conversion operator to point/face_descriptor/pair<point/face_descriptor> ?

what's the problem with the value type?

The function is available only for generators that first need to select an item within a range and then sample the point in the picked item. I'm OK with whatever better name you could come up with.

[sloriot]

Do we want the equivalent functionality for tetrahedral mesh boundaries ? On this page the word Mesh_complex_3_in_triangulation_3 should be replaced with MeshComplexWithFeatures_3

It is already here. See https://github.com/CGAL/cgal/pull/9066/files#diff-0d2d36f802470003ce212fc13d25eddff587acac6c3864488f104e31aaec8f75R692

[sloriot]

what @afabri meant is to make operator* return a struct that will have an operator to convert to Point type.

[sloriot]

In Munich, we agreed to keep it that way.

[sloriot]

Successfully tested in CGAL-6.2-Ic-82

[afabri]

What about the generator returning a pair of face descriptor and point?

[sloriot]

not in operator(), could be done by another function

[sloriot]

If you are worried of multithread usage, you would anyway get a different generator per thread (I don't think they are threadsafe currently)