A scale across a revolution's axis keeps the face a surface of revolution and is written as one; any other refusal from the writer is an export error, not a panic.
* Chamfer: refuse a result that grew a convex edge's part (or shrank a concave one's)
A chamfer of a curved edge that runs off a face it skims (robustness seed 57's
ball rim) built a part bigger than before. Checked from the two faces' normals
at the edge; rounds and unclear angles are left to the wedge bound.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Action matrix: the sheet metal tray's relief corners refuse a 0.25 mm chamfer
Each is a 2.5 mm concave edge (the corner of a corner relief, between two
planes at right angles): a chamfer there fills at most 0.25²/2 × 2.5 = 0.08
mm³. What was built took 0.95 mm³ away; the chamfer guard now refuses it.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Robustness goldens: seed 57's wrong-way chamfer is now refused (#1390)
On main with #391, seed 57's chamfer grew the part; this refuses it, so the run goes on
to its later steps and ends ok.
---------
Co-authored-by: Phanoob <[email protected]>
Co-authored-by: Claude Opus 5.5 <[email protected]>
Co-authored-by: bherbruck <[email protected]>
The continuity core (kernel bridge: Hermite control rows reproducing a support surface's position, tangent, curvature and change of curvature, G0 to G3), surface.blend between two edge chains (#764), and a crown for fitted patches. Existing patches and fillets are unchanged by default (crown 0 is the plain patch bit for bit). SurfaceBlend and Patch.crown are noted under format 22.
A curved chamfer chain with straight planar ends can end across two earlier planar bevel faces, shortening their shared seam to where the new chamfer plane crosses it; picks on one tangent chain are applied once. Fixes#1303.
The mesher samples edges through a fallible evaluation, so an intersection curve whose projection fails to converge no longer panics; a boolean result with an edge that does not evaluate is refused with an error. Fixes#1252.
* Web app: read a STEP file a piece per frame, with progress and Cancel (#1376)
The kernel's STEP reader walks the file first and converts its solids afterwards,
and StepReading exposes those stages: parse and walk, then convert a solid (or a
batch) per step, then finish into the shared import cache. The web app's file
load drives it from the frame loop for about 30 ms a frame, shows the same
progress card and Cancel as the desktop, and then runs the insert or open, which
finds the file already read. The desktop path is unchanged in behaviour.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Web app: make the imported bodies' meshes a few per frame too (#1376)
After the read, the insert or open runs, and then the bodies' display meshes are
made a frame's worth at a time ("Preparing the view"), as the desktop worker
warms them, instead of all in the first frame that draws the design.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
---------
Co-authored-by: Claude Opus 5.5 <[email protected]>
Measure now reads the picked item's exact shape (cylindrical faces, circular and arc edges,
sketch circles, arcs and lines, profiles, planes, points):
- A circle, hole or arc shows Ø, R and its length (circumference, or arc length and angle).
- A slot (a sketch profile, or a half-cylinder end of a slot in a solid) shows its width,
centre-to-centre length and overall length.
- Two items where one is round measure from the centre or axis by default (axis to axis,
axis to plane, edge or point), with the closest and farthest distances listed too; the
panel switches between centre, min and max, and the canvas line follows.
- inspect.measure and MCP `measure` (new `items` argument) add diameter, radius,
center_distance, min and max; existing fields are unchanged.
Co-authored-by: Claude Opus 5.5 <[email protected]>
The groove's facets came in sweep order, and the BSP takes each list's first
polygon as its splitter, so the tree was as deep as the list: quadratic time and
memory. An M8 x 60 mm thread ran out of tree depth after 12.9 GB. A fixed shuffle
gives a shallow tree and the same result (volume and faces equal to 1e-9).
Co-authored-by: Claude Opus 5.5 <[email protected]>
Part of #771 and #772. solid.sweep and surface.sweep take orientation (perpendicular, parallel or a direction), twist (up to 4 turns) and end scale (0.01 to 100), applied about the profile's normal through the path's start; default options run the old sweep, so existing sweeps are unchanged. New fields are optional, left out when unset and noted under format 21; twist and scale are model parameters. Both sweep dialogs get Orientation, Twist and End Scale rows; labels in every catalog. Checked on main + this branch: cargo check --workspace, kernel/engine/UI sweep tests, the doc suite and the robustness goldens.
file.insert_step and doc.open on a STEP file take `up` (turn a Y-up file so its up is +Z) and `names` (names for the imported bodies). The MCP tool and the app's control requests pass them through; an import without them works as before. Tests in the kernel's STEP reader, the engine, MCP and the file-load UI; docs/step-import.md and docs/mcp.md describe both.
A fillet or chamfer on a cylindrical boss's bottom arc now builds with a closed display mesh: the seam-extension containment ray counts a shared curved-boundary endpoint once. Merging the split faces of a three-edge arc corner rebuilds the face on the original input face's full surface instead of a piece's restricted patch, and runs under the kernel's panic guard. Fixes#1262 and #1263.
Co-authored-by: Karl-VonRichter <[email protected]>
A round or chamfer whose edge chain runs on across a curved seam (the end circle of a lofted tube whose axis bends) is now built: the section solve keeps its contact on the seam through a plane taken afresh at the seam's nearest point at each step. Straight seams are unchanged. Robustness seed 41 is re-recorded: its second fillet, refused before, now builds. Fixes#1213.
Co-authored-by: gvocale <[email protected]>
A fillet or chamfer that consumes both seams of a side, leaving its old boundary and the fitted contact on the same curve, now returns TooLarge ("the blend would consume a neighbouring face") instead of a zero-area face that doesn't mesh. Genuine two-edge faces are kept. Fixes#1113.
Co-authored-by: Karl-VonRichter <[email protected]>
A modelled thread as other CAD systems write it to STEP has cylinder faces trimmed by helices
that turn several times around the shaft, and cylinder faces bounded by two circles with no
seam edge. The display planner refused any face whose boundary winds around its surface, so
the whole body fell back to the reference mesher, which drew those faces with triangles across
the solid.
The planner now cuts such a face along a parameter line into one period: every loop and its
copies a period apart are clipped to the strip, and the parts of the cut line inside the face
join the pieces into closed loops, with the seam nodes made once for both sides. The cut face
is meshed by Delaunay with sag refinement, and the sag check runs once more after shaping.
Bodies with a face trimmed by more than one turn take their reference mesh (picking, measuring,
the CPU viewport) from the plan too.
Tests: an ISO M10x1.5 and M12x1.75 thread built from helices, as made and after a STEP round
trip: the display mesh stays within the tolerance of its surfaces and the thread's volume, and
has no degenerate, sliver or flipped triangles.
Co-authored-by: Claude Opus 5.5 <[email protected]>
* Action matrix regressions of #1255: knuckle rounds, thin holes, a 45° flange hole, an axis after an edit
- Curve blends: past the end of a curved edge the run of sections along the end
tangent wrapped round the ring of centres; it is shortened while it still
crosses the end face (the hinge knuckle's cap rounds at 0.728 mm).
- Boolean retry guard: each body's volume is measured finer than its smallest
radius, and a volume out of bounds is measured again ten times finer before
it refuses (a 0.133 mm drill measured -30272 mm³; a plastic part's coarse
mesh was off by more than the slack).
- Sheet metal: a drill cap's certificate allows the evaluation noise its fitted
tilt shows (a hole square to a 45° flange).
- Construction geometry on a named face uses the face found by name, not a
second pick at its nearest point (an axis through a corner round after a
parameter moved it).
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Retry guard: measure the target, tool and result at one tolerance
Measured at different tolerances, the chords' error on the faces they share
didn't cancel: a blind hole in a long D-profile bar measured 20 mm³ more than
the bar.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Action matrix baseline from this branch's full run: 37 actions pass again, none fewer
Blessed with cargo xtask action-matrix --from DIR --bless from the 16 shards of
run 38673859774.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
---------
Co-authored-by: Claude Opus 5.5 <[email protected]>
Extend works on any surface: natural (continuing the face's own surface), tangent (G1 run-off) or curvature (G2 run-off), by a distance, up to a plane or face, or back to the surface's bounds, with neighbouring edges lengthened to meet. Untrim and Extend share face parameter-loop helpers. The new SurfaceExtend fields are noted under format 21. Closes#760.
Ruled Surface: strips off an edge chain in normal, tangent, angle or direction mode, exact planes/cylinders/cones where possible, mitred or round corners, stitched into one surface body. SurfaceRuled is noted under format 21. Closes#762.
A design carries metadata (format 21): project, part number, revision, author, organization, description and license, plus other tools' data under reverse-DNS keys, kept as written. Edited in the Design Properties window (Document Settings), set by document.metadata.set, reported by inspect_design, and written into STEP, IGES and 3MF where the format has a place for them. Translated, with tests.
Trimmed faces are cut into four-sided patches (squares around holes, butterflies for round faces, motorcycle traces from concave corners) and each is meshed as a Coons grid, with a cut grid as the fallback; cells are at most 2:1 along straight directions. Folded blends are refused rather than overlapped. The README lists display meshes and the gpu crate.
The reader converts each item once, but every instance made its own display mesh
(tessellation, seam and tangent flags), the most expensive step of opening a large
assembly. A later instance of an item now shows its first instance's mesh, placed by
the difference of the two placements. Only rigid placements share; split lines and
any operation drop the link. Measurements and export read each instance's own
geometry, so eval output is unchanged.
Generated assemblies: mesh phase 2,215 -> 139 ms (901 bodies) and 1,028 -> 85 ms
(5,401 bodies), with the same triangle counts.
Co-authored-by: Claude Opus 5.5 <[email protected]>
Edges shorter than the model tolerance are dropped from the flat cells, and the refold sews touching corners, so a cut-out across a bend line no longer fails with a degenerate edge.
Ruled B-spline sheets that are circular cylinders or cones are written as CYLINDRICAL_SURFACE and CONICAL_SURFACE, so other readers no longer bound the part by sheets that reach past its faces.
* Refuse fillets and chamfers that run past their faces or cross each other (#1080)
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Blend fit: chamfers keep their old acceptance of crossed loops; skip the volume bound along tangent chains
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Blend fit: one selection per check, a coarse volume pass first; record the refused oversize blends in the action matrix baseline
Co-Authored-By: Claude Opus 5.5 <[email protected]>
---------
Co-authored-by: Claude Opus 5.5 <[email protected]>
* Straight edges stay one edge after cuts (#1049)
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Robustness goldens: cuts join straight edges along untouched walls (#1049)
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* fmt
Co-Authored-By: Claude Opus 5.5 <[email protected]>
* Robustness goldens note: what each changed seed shows when replayed on both builds
Co-Authored-By: Claude Opus 5.5 <[email protected]>
---------
Co-authored-by: Claude Opus 5.5 <[email protected]>
A tapered extrude now offsets spline and conic curves as well as lines and arcs, so sketch text and any other profile can take a taper, and the join of tapered letters onto a face finds its boolean result.
A chamfer of a hole corner, where the mitre extension runs into the wall, now takes the local blend and comes out as one bevel instead of a notched cut; where that blend can't build the edge, the cutters that used to succeed are kept (#814).
A planar union no longer leaves a sliver where an edge crosses its neighbour, so a sheet whose outline runs on past a flange's edge with a slight bend unfolds again.
bherbruck