* WIP Clipper2 wrapper for 2d subsystem
* Working example in clippoly_test
* Add clean_ property to clippoly
* Square center=false by default
* Square defaults to center=false
* Shorten union example
* + simplification and minkowski functions
* + Circle and note on Minkowski
* + Offset (InflatePaths)
* Clippoly -> CrossSection renaming
* Switch from NonZero to Positive fill rule
* -(minkowski, simplifs, clean_) + pre-alloc vecs
Remove minkowski, simplification algorithms other than simplify,
clean (union) arbitrary contours on construction, and pre-allocate
vectors when length is known.
* - index from polygon conversion + missed vec prealloc
* Use Polygon shorthand over std::vector
* Update copyright date
* Add Rotate
* Update copyrights to 2023
* Extrude and Revolve accept CrossSection only
* Fix incorrect use of vector constructor
* Fix remaining incorrect vector construction
* Revert "Update copyrights to 2023"
This reverts commit af8f6c8c95135eb3376e1f150fe720fddea16f33.
* Re-update copyright notice in cross_section files
* Add missing precision_ argument to cleaning Unions
* Lift circular resolution globals into Quality
* Replace uses of Manifold globals with Quality
* + Ellipse, Mirror, Area
* Include mirror in Union example and test area
* + Rewind (reverse winding of all contours)
* + fillrule/IsEmpty - Ellipse/Rewind
* Move Quality into public.h
* Remove bad definition
* Replace manual circles with CrossSection::Circle
* Lists of empty contours are empty
* + Rect class, RectClip, + const params/methods
* Add Transform to CrossSection and Rect
Geoff deRosenroll