This patch refactors most of the code of the hard eraser, both for readability purpose, and to prepare the integration of the soft mode of the eraser.
The refactoring includes :
- the use of specific structures and enum types `SegmentCircleIntersection`, `PointCircleSide`, and `PointTransferData` to handle the data more easily,
- improve readability of the intersections functions (better naming, and more accurate and generic comments),
- definition of a more generic `compute_topology_change` function that handles point insertion, removal, and curve splitting for curves geometry.
Pull Request: https://projects.blender.org/blender/blender/pulls/111390
1193f2d7ec