On SMLib v1.1.0-alpha, 06/018 makes 597 or 594 edges from the same input:
the union's post-process keeps pointers to edges it has deleted. A golden
entry's `unstable` reason makes the gate compare that case's status only
and name it in its output; recording keeps the reason, and only an edit of
the golden removes it. v1.1.0-alpha.1 fixes the cause and removes the mark.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
Fixed (off the known-failing list): the Mixed corner's peg cases and the concave arc with the front top edge (smlib #123), and the 40° boss junction (smlib #124). Eight cases in all.
New failures, recorded as they are, each with its reason. They passed on f916a8d.
- **Six cases grade a blend seam G0 where G1 (or G2) is wanted,** at the end of the round's contact seam, after smlib #124's End at a smooth vertex. Two of them also shift in volume.
- **Four cases come back unsupported** after smlib #125, which leaves setbacks to the Setback's corners only.
- **Ladder 07/012** makes 9 faces, 20 edges and 13 vertices, where its golden had 8, 18 and 12. Its golden entry is the new result, with the reason added.
Whether each change is by design or a defect is being established. A defect is fixed in solidcore, where the End and the Setback are being brought over (#2364, #2365), not in the frozen SMLib.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
SMLib's flat arrays now carry the corner of three equal rounds as `SURFACE_BALL_PATCH` (kind 6): its net as a NURBS face's block, with its sphere's centre and radius as its definition (ids 36 and 166). The record reads it as `ball_patch {center, radius}`, a label like the analytic kinds, with the net as its `nurbs`. A plain sphere with a form won't do: the net is not a piece of SMLib's sphere NURBS, so SMLib's `IsNurbSurfaceSphere` would refuse it.
Written back, a ball patch is kind 6 with the same definition, which SMLib takes once its net is certified on that sphere. Elsewhere:
- Offsets classify it as its sphere, so its offsets stay exact and collapse at the centre.
- Face kinds count it as a sphere: fillet_three_edges_at_a_corner's corner is now `sphere`, no longer `other`.
- STEP, which has no ball-patch entity, gets the net as the face's B-spline surface, pcurves included.
- Iso curves and SSI of the label are refused; the face's form is what evaluates.
Test: a_rounded_cubes_ball_patches_go_round_with_their_spheres. The cube's eight corners are ball patches about the corners pulled in by r. Points of each patch lie on its sphere to 1e-12. The patches are kind 6 again after import, with the same definitions bit for bit, and the closed-form volume holds.
Format: pending/ball-patch-faces.rs. Docs: docs/native-brep.md and the rig README's `surface_types` (`ball_patch`).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
On the CI runners the boss root and the hole rim, both size-2/size-1 curvature rounds, build
correctly but take more than 180 s: the order-2 section's span certificate and the round's
definition are evaluated station by station. The per-case limit is the one the thread cases use.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
With the tangent chain on, 016's and 018's r3 runs on along the r5 round's end arc and down the
vertical edge, so the third pick (60, 40, 8) is 3 from both of that round's contact lines and
names no edge: refused, asking for a point along one edge. The corners they were made for are
020 and 021 (the r3 alone), whose golden entries are 016's and 018's (021 measured on f12a101).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
851-fillet-arc-then-top-front and 851-fillet-top-front-then-upright: with the tangent chain on,
each R2 chain runs along the end curve of an R2 round on a curved face (the arc round's end on the
front face; the first round's end on the wall), where the rolling ball sits on that round's own
centre line, so the piece is the ball about (39.2538, -19, 8): the three-edge rolling-ball corner.
SMLib fails with status 1001; the same piece on a plane end arc builds (front-left upright).
Expectations unchanged.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
- every-fillet-after-fillet-curvature-front-then-side-r3: the side edge's chain runs round the
first curvature round's end curve, whose radius of curvature has a weighted mean of 3 (its
setback) and is unbounded at the ends, so somewhere below 3: the size-3 blend's contact line
folds back on itself. Refused, "larger than the faces beside its edges allow", as ladder
07-fillets/016's r7 on the r5 arc. (It was solid or refused for running on tangentially.)
- every-block-cylinder-tangent-concave-arc-r2-no-tangent-chain: the chain takes every piece of
the half circle and ends at the convex edges it runs on into; it builds the analytic 19091.9620,
so the outcome is solid (the refusal alternative was the chain-off one's).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
With the tangent chain on, two cases round more than the edge they pick, and their old
expectations were the single edge's:
- 1207-fillet-box-end-edge-into-unblended-round: the r1 chain is the end face's top edge, the r3
round's end arc and the back upright; 34 A + (pi/2) A (3 - c) by Pappus on the arc:
V = 7953.139216 (it built 7953.139216, the old 7957.505 passed only inside 1e-3), 10 faces.
- 851-fillet-top-front-then-front-left-upright: the upright's chain runs up the first round's
end arc on x = 0 and along the left top edge, so the corner becomes the R2 ball's eighth:
V0 less the first round's spandrel to the wall (35.344727) less 27 (4 - pi) + 2 pi/3:
V = 9530.777979 (built 9530.777987), 10 faces.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
fillets/every-block-cylinder-tangent-concave-arc-r2-partial-chain: the pick takes one piece of the
concave half circle, which SMLib splits; with the chain off its other pieces are left out, and the
blend is refused at the piece's end (the base gate's outcome). With the chain on the case rounds
the whole half circle. The copy keeps its expectation, to be re-derived.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
Where a case's point is one edge of a tangent chain rounded alone, a copy keeps tangent_chain
false as its own case (SMLib rounds exactly the picked edges, ending at the smooth vertex); their
expectations stay as they were, to be re-derived:
- fillets/1207-fillet-box-end-edge-into-unblended-round-partial-chain;
- fillets/every-fillet-after-fillet-curvature-front-then-side-r3-partial-chain;
- fillets/1207-fillet-bar-top-edge-after-boss-arc-round-partial-chain, renamed from
...-no-tangent-chain: with the chain on it is exactly 1207-fillet-bar-top-edge-after-boss-arc-round,
which the rig already has;
- ladder/07-fillets/020 and 021, the r5/r3/r7 and r5/r3/r2 corners (016 and 018) with the r3 on
its edge alone: with the chain on, the r3 runs on along the r5 round's end arc and down the
vertical edge the third round was to take.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
The owner's ruling of 2026-11-01: the rig and the ladder round with tangent_chain true, how a
user's default pick behaves. The 38 fillets-area recipes and the ladder's 07-fillets/016 and 018
that passed false now pass true. The shell recipes keep theirs: a shell's tangent_chain is its
open-face chain, a different feature.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DtL5M41G8Nua7HvuFPZkmJ
SMLib builds a variable round's law corners as its balls' union (the corner
ball's zone at a dip, the sides' crossing at a peak): the kernel's corner
through a middle point (39.5410) and the crate's 4 -> 2 -> 4 law (39.5421) pass.
Rig 1207 (the bar's top edge rounded after the boss's arc, r0.5) builds and
grades on the same SMLib; it failed on c820346.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
At the default 1e-3 the great circles' volumes (4e-6 off) passed too. SMLib builds each within
1.6e-7. The golden takes the new volumes and areas; counts unchanged. The G2 corner test listed
as failing passes on SMLib's step 3 and leaves the list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The smlib crate's laws and ladder 005, 006, 007 and 012 take the volumes the balls' envelope
removes; the law with a corner is its own test, listed as failing until the corner step.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Four are listed with their causes: the equal-pipe tee (its exact conic-pair rounds meet at the
ellipses' crossings in a corner the old corner code cannot join), the tilted bosses (1001, before the
blend rework too) and the Y junction (refused for room at its triple points).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A round's spandrel A = (1 - pi/4) r^2 and its first moment about its wall M = r^3 (5/6 - pi/4):
Mitre adds L A -+ 2 M per edge (cut at, or run on to, the corners' bisector planes), Swept turns
the section about a convex corner's edge, (pi/2) M a corner, and refuses a concave corner rounded
less than the ball. The pocket's tangent chain round its R3 corners is a torus each. Graded to
1e-7, where Mitre and Swept differ by 6.6e-6. The Swept cases are listed until solid.fillet
takes a turn.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
On the round's rails the order-2 section takes off what the ball's circle does: (1 - pi/4) s^2 at a
square corner, first moment 0.0474559669443 s^3 (w = -0.5252123889). The kernel and engine tests
and the curvature rig cases take their volumes from it by their own methods; the pipe on the plate
from its own wedge (70.52878 degrees, w = -0.8544103493). The G2 corner patch's seam test is listed
until the corner step.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
SMLIB_BLEND_CURVATURE's section is now the order-2 G^n section at thumbweight 0. Between two
planes square to each other it cuts A = 0.154192655384275 s^2 off the corner, its first moment
about either face 0.0291753295725360 s^3 (Green's theorem on the section): the curvature cases
built on that corner (862, 2708, every-box-edge, every-hole-top-rim, every-l-bracket,
every-block-cylinder-crease, the three-edges-at-bar-corner reports, 3604's fillet) take their
volumes from it by their own methods, the peg's front blend 23.3237146876 (its section along x
up to the wall). Between planes the section's t^3 term vanishes (their feet are linear in the
distance): the box edge case is exactly G3. The boss root is a certified fit, G3 to the plate and
G2 to the wall at Continuity Analysis's tolerances: at least G2. The boss root and the pipe on
the plate pass on SMLib's section and leave the known-failing list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Eight fillet cases for the blend's cross-section by its order of contact with the faces, each
graded on its analytic volume at rel 1e-7 and its exact continuity (the order, and not the next):
- a box's top back edge chamfered 3 (G0), rounded r3 (G1) and curvature-rounded 3 (G2): the
areas cut off the corner s^2/2, (1 - pi/4) s^2 and 113/756 s^2, the last by the default
thumbweight's definition;
- a pipe R10 dipping into a plate, its concave edge chamfered 2 (the chord between the contacts of
the ball SMLib rolls for that setback, radius 1), rounded r2 and curvature-rounded 2, each
section's added area by Green's theorem along the plate, the section and the pipe's arc; the
order-2 section is built from the faces' feet of the point at distance d from both, which on
the pipe are not linear in d;
- a boss root curvature-rounded 2, the square corner's section revolved (Pappus);
- a variable round r1 to r5 along a box edge (rel 1e-5): the balls' envelope is a circular cone,
and the volume is the cone's sections integrated along the edge.
Three fail today and are listed: the two curvature rounds whose faces are not a square corner of
planes (SMLib's quintic blend curve, not the order-2 section: rel 6.5e-7 and 1.2e-5) and the
variable round (great circles, not the envelope's: rel 4.8e-5). The other five pass on SMLib
7ac037e.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Where the round meets the open bottom the cavity's wall steps down along the bottom's normal, so the
round meets it at 90 degrees and the opening is exactly the picked face. The cases are renamed and
graded on the exact volumes, and come off the shell known-failing list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Twelve listed cases build on the new blend's end event and exact classes, or were already
built on develop: they come off the list.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The rounds now come as the rational surfaces their classes give, closed ones as two faces split
at their seams, the touching pipes' as four: one splines entry a face, each of the class's degrees.
Their KNOWN_FAILING lines go.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A plane cutting a cylinder or a cone at an angle, a sphere or a cone coaxial with the other face, a
cone and a cylinder touching one ball, two pipes touching at a point: their rounds' centre lines
are rational, so the rounds are rational surfaces of degrees fixed by the construction ((4, 2),
(2, 2) revolved, (6, 2), (12, 2)). The tee's centre line is not rational; its round is graded on
its volume. Volumes from the divergence theorem over the exact pieces, at rel 1e-6. The six that
SMLib 0cc48bd traces are listed in KNOWN_FAILING with what they come out as.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With SMLib's tangent end as an event of the fillet's trace (blend-end-event 6d73e4f), the
concave chamfer's rail on the cylinder ends where it crosses the seam along which the front
face runs tangent into the cylinder, continued past the vertex, and its end rib on the front
face is built from there. report-peg-concave-chamfer-d2 and
report-peg-front-chamfer-d1-then-concave-chamfer-d2 pass and leave KNOWN_FAILING. The two
chamfers together still fail, now at the mixed-convexity corner where they meet: its line says
so. Rig against SMLib 0cc48bd: no area regresses (963/993 pass, 961 on a87c502), ladder 168/168,
kernel lib only its listed failures.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The six corner cases added in 3a854104a took the fillet's default type, on the premise that the
default would become curvature-continuous. The default stays the circular round, so each case
now asks for the curvature fillet itself (type curvature: curvature-continuous sections and
corner patches) and keeps its grading: every seam of the rounds and of the corner patch G2, one
valid body. They are renamed from cov-fillet-g2-default-* to cov-fillet-g2-*.
The oblique three-edge corner (a block drafted 15 deg) and the pocket corner pass. Four fail, as
KNOWN_FAILING now says:
- the corner beside a cylinder: the curvature fillet builds its sections only between planar
faces;
- the four- and five-edge apex corners: refused because the default setback is shorter than
where the rounds' contact lines meet (3.90 and 3.51 mm from the apex);
- the mixed corner: SMLib sets back a corner only where its edges are all convex or all
concave.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
With the SMLib fork's smlib-tangent-ends (a rail's end on its side edge is the rail/edge
crossing), report-peg-front-chamfer-d2 passes. Its line leaves KNOWN_FAILING, for the pin that
carries that fix.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Six fillet cases that pick their edges with no type, so they take the fillet's default, which the
owner has ruled is to be curvature-continuous (G2) at every corner, with circular rounds kept as
an option. Each grades every seam of the rounds and of the corner patch G2, on one valid body:
- an oblique convex corner (a block drafted 15 deg);
- a four-edge and a five-edge apex corner (pyramids lofted to a point);
- a pocket's concave corner;
- a mixed corner (a step: one concave edge, two convex);
- a corner beside a cylinder (the top corner of a half cylinder).
All six fail on SMLib 2fc375f, listed in KNOWN_FAILING: today's default is the circular round,
whose seams jump in curvature by 1/r. On the five-edge apex the corner patch also meets two
rounds at 8.45 degrees (G0).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Fifteen fillet cases on the test-peg's shape with clean numbers: a bar 40 x 16 x 10 whose far
end is a half disc R8, a disc R8 standing 10 on its top, joined, so the front face runs tangent
into the cylinder along x = 40 and the front top edge (convex) meets the concave arc of the top
tangentially there. Each blend ends on a face tangent to the one it rolls on.
- Rounds: both edges together at r2 and r5; one after the other in either order at r2, and at
r1.5 and r3; the front edge alone as a curvature round, whose end on the cylinder is a
semicubical cusp. The containment invariant (the unblended body's exact box, to 4e-5) and
G1 seams, or the analytic volume where the blend has a closed section.
- Chamfers: the front edge alone and the concave arc alone (analytic volumes: the section along
x up to the wall, the cone's spandrel ring clipped by the sides), both together, and one after
the other (1 then 2).
- STEP: the peg written to STEP and read back, its front edge rounded (analytic) and both edges
rounded together.
- A cone: the peg drafted 5 deg, whose front face runs tangent into a cone along a generator,
its front edge alone and both edges together.
The quadratures are tanh-sinh, converged to 1e-13; SMLib's own volumes of the passing analytic
cases agree to 4e-9. A sphere is left out: a plane meets a sphere tangentially at a point, not
along a seam, so it is not this ending.
On SMLib 2fc375f eight fail, listed in KNOWN_FAILING: every chamfer that ends tangent (status
1001, SmFilletNx1Corner), the two rounds together (the corner patch 0.0374 at r2 and 0.128 at r5
out of the front face, and the rounds meeting with normals 180 degrees apart where their
contact lines on the top cross), the same on the STEP-read peg (status 1001) and on the drafted
peg (its corner refused as unsupported).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Two more fillet cases, the reported part's concave arc and front top edge rounded together at
r5 and r7, with the same exact-box containment check (graded to 4e-5, the corner patch's
tolerance). On SMLib 2fc375f the corner patch stands 0.128 (r5) and 0.230 (r7) out of the
bar's front face (box y min -0.0699 and -0.1723): listed in KNOWN_FAILING.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A new fillet case, report-fillet-concave-arc-and-front-top-edge-together-solver-residues:
the reported part's bar (with the sketch solver's residues) whose sides run tangent into the
cylinder, its concave arc and front top edge rounded r2 together. The plane of the front face
bounds the whole body, so every blend lies within the unblended body's exact box (SMLib's tight
box); graded to 4e-5, the corner patch's own tolerance. On SMLib 2fc375f the corner patch
stands 0.0374 out of the front face (box y min 0.0205): listed in KNOWN_FAILING.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Its seams grade needs the continuity check to skip the body the round is not on. Fillet cases
wait for the new algorithm.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
jyviko