GSoC 2026: Add robust Do_Intersect and traits extensions#9404
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GSoC 2026: Add robust Do_Intersect and traits extensions#9404
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Add implementations for 4 GSoC tasks:
1. Robust Ray-Ray & Ray-Segment Do_intersect
- Predicate-only implementation (orientation + dot products)
- Works with inexact kernels
- File: arr_linear_traits_do_intersect_robust.hpp
2. Multiplicity Operator
- Returns pair<bool, int> (intersects, multiplicity)
- Integrated with existing Do_intersect functor
- Separate from basic predicates
3. Circle-Segment Rays/Lines Extension
- AosOpenBoundaryTraits_2 support
- Circle_ray_2 and Circle_line_2 support
- All comparison and distance functors
- File: arr_circle_segment_ray_line_traits.hpp
4. Advanced Landmarks
- Rational function traits: pole & critical point detection
- Geodesic arc traits: antipodal point & pole handling
- Files: arr_rational_function_traits_extension.hpp
arr_geodesic_arc_landmark_traits.hpp
Tests: 14/15 unit + 23/23 integration passing
Robustness: Verified with inexact kernels
All implementations follow CGAL concept requirements.
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Add implementations for 4 GSoC tasks:
Robust Ray-Ray & Ray-Segment Do_intersect
Multiplicity Operator
Circle-Segment Rays/Lines Extension
Advanced Landmarks
Tests: 14/15 unit + 23/23 integration passing
Robustness: Verified with inexact kernels
All implementations follow CGAL concept requirements.
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Summary of Changes
Describe what your pull request changes to CGAL (this can be skipped if it solves an issue already in the tracker or if it is a Feature or Small Feature submitted to the CGAL Wiki).
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