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Tommaso Bianchi
b5ead4b29f
Port of snaporca e635627b81. Parity OK: 17 files identical, 8 diverging at their expected counts. The last reference an industrial sketcher offers that this one did not: Onshape's Use, SolidWorks' Convert Entities. Project already turned a body's 3D edges into 2D Lines, Circles and Arcs on a plane, but the result landed in its OWN feature, so while drawing in one sketch you could not borrow an existing body's edge and constrain to it. No new geometry code: Project's per-edge conversion loop is factored into project_edges_to_entities() and called from a second entry point that appends into an EXISTING sketch with construction = true. The loop appears once now, not twice. Construction is what makes it cheap and safe: SketchEngine already skips construction entities when building wires, so the references guide without being built, and being otherwise ordinary entities every constraint from this epic -- Collinear, EqualRadius, the axis-projected distances, PointOnLine, Symmetric -- works against them for free. Part of this refactors working code, so Project's behaviour identity is the invariant; the existing [CadDocument][project] cases guard it and a new case asserts a Project feature still emits construction == false. project_edges_into_sketch returns the number of entities appended, or -1 on a bad reference rather than throwing. VERIFICATION LIMIT, as with the previous four commits: this fork's kernel suite still cannot run (find_package(assimp) at configure time, snaporca-w80c). Shared sources are byte-identical to snaporca's, where kernel is 7700 assertions / 270 cases and ALL LADDERS HELD 7/7.
OrcaSlicer tests
Building, running and writing tests is documented on the wiki, under How to Test.
Two files here rather than there, because coding agents only read what is in the repository: