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 <[email protected]>
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 <[email protected]>
Claude-Session: https://claude.ai/code/session_01J53sR6gEaVt56soFDpTck8
Record ownership transfers in the timeline so earlier Join/Cut membership,
world placement, machining data and styles survive component moves, edits,
independent copying, undo and reopening. Preserve pending positions in history
snapshots and keep constructor transfers ordered during feature redefinition.
Retain shallow sheet pockets and exact planar intersection islands through
unfold/refold, with depth-aware flat previews and DXF export. Store explicit
3D wire coordinate spaces and migrate known legacy provenance without moving
saved points or analytic fits.
Infer unique eligible cylindrical Emboss targets, align Revolve manipulators
with actual extent geometry, and discard obsolete preview errors after input
correction. Certify constructed and immutable imported face styles using exact
source metadata while preserving legacy face names. Upgrade designs to format10
with bounded validation and geometry-preserving legacy migration.
Persist typed sketch dimensions and bounded ordered configuration rules in format 8. Use exact occurrence paths and source identity for editing, movement, appearance, and mass. Preserve sheet material regions through cutting, folding, and exact DXF export; retain nested cavities and material islands.
Validation: cargo xtask ci passed, including 368 engine tests, 178 UI tests, 68 UI scenarios, 136 kernel tests, and the 10-crate wasm check. Actual preview workflows and legacy format-7 origin-corner reopening were inspected.
