Completes the port. mechcomp.profiles.build and ProfileRejected are live,
so all 123 oracle cases execute rather than skip.
_common.py assembly pipeline shared by both families, and the eight
base checks both generators declare identically
four_x.py five profiles, all direct library calls with N=4
three_x.py six profiles; four are library calls with N=3, while
A Frame and T are built from join-layer primitives
because they are specific arrangements rather than
instances of a family
466 tests: 436 pass, 30 fail. THE 30 FAILURES ARE EXPECTED. Do not treat a
red `make test` here as a broken port.
All 30 are test_accepted_case_matches_oracle, and all 30 breach on
SECTION_AREA_MM2 alone -- VOLUME_MM3 and MASS_G are that value times 100
and times density, so each case has one underlying discrepancy reported
three times. Worst relative error 2.24e-05.
Everything that positions material is exact. ENVELOPE_X_MM, ENVELOPE_Y_MM,
MIN_WALL_ACTUAL_MM and every profile extra (AF_*, FIN_*, SPOKE_*, RING_*,
T_*) pass at 1e-4 mm in all 123 cases. Every count is exact. All ten
rejections fire correctly, including the bespoke A Frame and T paths.
Cause is F-034, now characterised precisely: the port is exact and the
reference is noisy. _circlecorner computes (90-angle)/180*segs(), which at
$fn=48 on a 90-degree corner is exactly 12. The port lands on 12.0 every
time and takes ceil 12; OpenSCAD's arithmetic lands a hair under 45 degrees
at some corners, pushing the value fractionally above 12 and the ceiling to
13. Measured on Rectangle: reference envelope 50 vertices, port 48.
There is nothing to correct on this side. Both boundaries sit within
0.0027 mm (4x) and 0.0043 mm (3x) of a true arc and within ~0.4 um of each
other -- far inside the project's 0.01 mm criterion. The tests fail because
VOLUME_MM3 is compared at 1e-4 absolute against a magnitude near 20000,
demanding 5e-9 relative agreement from discretised geometry.
Resolving that means changing the comparison policy in test_oracle.py, not
the oracle: the tolerance block is inside the hashed document and editing
it would break test_integrity_hash by design. Deferred pending a decision.
See docs/PRECISION.md for what the 0.01 mm criterion means and what this
compiler does not do.
TheRON
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