A cut of stepped prisms sews a wall over one segment through successive
slabs as one face, and the generated planar walls are then joined on
their common supports. Until now such a piece carried no history.
- prism_lineage: a sewn wall records what it is over in each slab it
spans (Spec::Wall { levels, slabs }), so a coalesced wall comes from
the operand walls under it in every slab
- the sewn piece's history is attached before the joining and carried
through it (Built::Traced); planar_regularize composes the history of
the body it joins with the join itself
- a composed face is Split only where record::mark_shared_split finds an
origin under several faces; an inner Split alone no longer makes one
- Body::same ignores history: an operation that leaves a body as it is
gives the same body, carrying that operation's history
The two boolean history tests that waited for this run again, and the
coalesced and regularized step cuts are covered.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J53sR6gEaVt56soFDpTck8
Chamfer is one of the most common features and is usually applied right
after a cut. A chamfer cuts with a prism cutter, and its history came out
None after four of the six common box cuts. Without exact history, any
reference to a chamfer face (or a face it trimmed) falls back to geometric
guessing in naming, which can silently re-attach to the wrong face.
Two gaps in the stepped-prism section tags caused it, both now closed by
bookkeeping at construction, never by sampling or geometric tie-breaks:
- Cap edge at the far end of a slab. A slab's section is read off the cap
where it starts and carried up to the cap where it ends; that cap's
outline can run along one wall in several collinear edges, so which one
a result edge lies on was unknown. When the stack is read, each slab
segment that runs end to end along one segment of an ending cap's
outline (beside the same wall) records that cap edge as `far`; the
lineage takes it when it bounds the wall and the result cap.
- Walls an earlier cut left in coplanar pieces. A segment carried through
a level kept the wall it was read beside, even where that wall gives
way to another piece at the level (or within the slab), so the tag named
the wrong face. `Stations` records the operand's edges across walls;
at each level a carried segment keeps its wall when nothing crosses it
there, moves to the one wall across it when it ends there, and is
otherwise unknown (no history). A wall crossed inside a slab is unknown
too, for simple and stepped prisms alike.
chamfer_after_box_cuts now covers all six cuts (notch, pocket, step,
slot, hole, bite), each verified against geometry and composed through
the cut over [block, tool]. The layered partial-depth cut test now
verifies its second cut, whose history was None before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J53sR6gEaVt56soFDpTck8
EdgeOrigin::Meet now names each side as a Side: the sorted, de-duplicated
origins of the face there. substitute maps a side to the union of the inner
faces' origins, so a meeting with a face an inner operation merged keeps its
lineage; meeting() derives sides from whole faces. Fillets after box cuts
that leave coplanar pieces now report exact history. Prism lineage meets a
cap of several origins and resolves wall junctions away from shared
vertices by the operand's one edge between the walls. bore_union's recut
reports history only for a one-face bore (pieces of a two-arc bore's recut
wall were given both arcs).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J53sR6gEaVt56soFDpTck8
ops::boolean's result carries its history over [a, b] whichever path made
it, recorded by the code that builds the faces:
- truck path (incl. jitter retries): shapeops history mapped through the
order-preserving copies and the cut's turned tool, then through healing
- heal records which input faces each healed face merges and which input
edges each joined or exact edge replaces (HealMap); opt-in, so heal_keep
callers pay nothing
- trivial shortcuts, the void, glue, faces pushed apart (push_faces records
its own history; the slab cut back on a union maps to the operands'
faces in that plane), the nudged retry, by_lumps and join composition
- prism booleans: section segments carry tags (operand cap edge, the wall
beside it, its vertices) through the 2D boolean; walls, caps and edges of
the extruded or sewn result follow from them
- planar and faceted polygon booleans: polygons carry their operand face;
faces join the pieces across edges, edges come from the pieces either side
History gains renumber/over (and consuming forms) for composition;
record gains regions/traced/build helpers. truck-shapeops
*_with_history now return the solid with an Option history. Paths that
cannot report (bore narrowing via offset, inexpressible lineage) leave the
result without history. Boolean results, tolerances and fallback order are
unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J53sR6gEaVt56soFDpTck8
