## Summary of Changes
Optimized `do_intersect(polygon, polygon)`, `do_intersect(begin, end)`,
and `do_intersect(begin1, end1, begin2, end2)`:
(i) Terminated the execution once an intersection is detected. (In the
past, the intersection was computed in one phase and examined in a
subsequent phase.)
(ii) Made the variants of the free functions `do_intersect()` that apply
to linear polygons, robust even with an inexact-construction kernel. The
variants that apply to generalized polygons endure inexact constructions
much more than before; however, there are rare degenerate cases that are
still require an exact construction kernel.
In general, the changes described here do not affect the default
interface, so a small feature is not required. However, it is a major
impact, and it does affect the interface as described bellow, and even
somehow break backward compatibility.
Recently, the code of the package "2D Regularized Boolean Set
Operations" was optimized. In particular, a 3rd optional parameter was
introduced in the free functions. It determined whether the boundaries
of the input polygons are treated as cyclic sequences of single
(`x`-monotone) segments or as a cyclic sequences of (`x`-monotone)
polylines. The change described here eliminates this 3rd parameter, and
brings the interface of the `do_intersect() function back to the
original design with two input polygons.
## Release Management
* Affected package(s): Boolean_set_operations_2, Surface_sweep,
Arrangement_on_surface_2
* Feature/Small Feature (if any):
[here](https://cgalwiki.geometryfactory.com/CGAL/Members/wiki/Features/Small_Features/do_intersect_polygon_2_predicates_only)
* Link to compiled documentation (obligatory for small feature) [*wrong
link name to be changed*](httpssss://wrong_URL_to_be_changed/Manual/Pkg)
* License and copyright ownership: TAU
## Summary of Changes
For file formats that expect floating point coordinates we convert on
the fly so that `CGAL::io::write_polygon_soup()` also works for polygon
soups with ` FT` which are non-float/double, e.g.
`Exact_predicates_exact_constructions_kernel`.
Additionally, we document the named parameter `point_map` as it was
missing.
## Release Management
* Affected package(s): Stream_support
* Issue(s) solved (if any): fix#9071
* License and copyright ownership: unchanged
* upon integration update and test #9109
Make collapse able to handle non-triangular faces. The fix is easy as
you simply don't need to join faces in case the face won't disappear
after collapse
**TODO:**
update doc and constrained version
## Summary of Changes
fixed Metis/Eigen3/Qt6 links in Thirdparty
removed LEDA from doc as it is outdated
## Release Management
* Affected package(s): Documentation
## Summary of Changes
Changing the used cmake target for Ceres to Ceres::ceres.
## Release Management
* Affected package(s): Installation, Polygon_mesh_processing
## Summary of Changes
As reported in #7868 the function `CGAL::IO::write_PLY()` used in binary
mode does not correctly write the coordinates if the points are from a
kernel with exact constructions.
~~This PR applies `to_double()" to the coordinates.~~
~~After a discussion with @MaelRL we decided that the user is in charge
to pass a `vertex_point_map` as named parameter that does the
conversion. This is straightforward as we offer the
[`Cartesian_converter_property_map`](https://doc.cgal.org/latest/Property_map/structCGAL_1_1Cartesian__converter__property__map.html).~~
Moving back to the previous proposal: hardcode some to_double and
to_float casts such that we meet the requirements of the file format,
whatever the input.
As the problem is the same for the vertex normals we add a named
parameter `vertex_normal_map`.
### Todo
- [x] Fix the generic function `write_polygon_mesh()`. Currently it is
fixed for `Surface_mesh`
## Release Management
* Affected package(s): Stream_support
* Issue(s) solved (if any): fix#7868 and fix
https://github.com/CGAL/cgal/issues/7327
* License and copyright ownership: unchanged
* upcoming integration, update #9072 and test it
Sébastien Loriot
Laurent Rineau
Andreas Fabri
albert-github
Sven Oesau
Mael