The second floor covers one class: the multi-wall corridor eating a neighbouring
wall. The first floor brings what neither it nor any synthetic fixture has —
three virtual spans, two wall columns, two solid edges with no thickness record
at all, and 127 noisy coordinates.
The two plans pin opposite states, which is worth more than two plans with the
same defect: one records a known debt of 181 steps, the other records cleanliness
at zero. A regression is caught in both directions.
A declared virtual span is a declared break, not a defect, so the rule from #285
would have reddened on the first floor's own contract. Samples lying on
open_spans are now excluded: 830 of 6800 on that plan, and the remaining gap
count is zero.
The two zero-thickness solid edges are two grid steps long and covered by the
bodies of their neighbours, so the browser sees no break. Their count is
therefore pinned in the model test rather than the smoke — if it grows, or if the
neighbours stop covering them, that shows up before it becomes a hole.
Both fixtures must stay noisy: the project's synthetic models carry exactly zero
noise, which is why #258 and #248 are not reproducible on them. A profile check
asserts at least a hundred noisy coordinates each, so a future write barrier run
over the fixtures cannot quietly rob them of their purpose.
Privacy: names, ids, markers, device bindings and layout are gone; geometry
stays, coordinates unchanged, because they are the point.
Issue: #286
User-Visible: no
Eight closed issues on wall junctions — #271, #272, #275, #276, #277, #278,
\#279, #280 — shipped in beta.9, and the break in the owner's real plan
survived. Every one of them was accepted on synthetic fixtures: a cell-5
mixed-depth T, a rectilinear T with three equal half-depths. On those the fixes
work.
The smoke asks the product itself, through isPointInFill on the wall path,
whether masonry exists where the model promises it. That is independent of both
resolution and the pixel-diff thresholds which miss this class: a 45-step break
on a large plan is a fraction of a per cent of the frame, well under the 0.05
per cent scene tolerance.
Measured on the shipped code: four breaks, 181 grid steps in total, 45.25 each.
That number is derivable rather than incidental — the node joins a 30 cm
exterior wall, a 30 cm spur and an arm five steps long; half-depth 15,
MITRE_LIMIT 4, corridor radius 60, and 60 − 15 = 45 steps are cut out of the
neighbouring 20 cm wall. The corridor eats the masonry, which is what #271 and
\#275 describe.
The fixture is privacy-minimised — neutral room names and ids, no device
bindings — and keeps its coordinates, because they are the point. It lives in
test/fixtures rather than demo/fixtures on purpose: sourceFingerprint hashes the
.mjs of demo/fixtures and demo/golden, so anything added there staleizes the
committed bundle and the screenshot manifest at once. Verified after this
commit: bundle still fresh, screenshots still current.
The debt is recorded as numbers and compared exactly. Better and the test asks
for the numbers to be updated, which proves the improvement; worse and it
catches the regression. Verified by execution in both directions.
Issue: #285
User-Visible: no
Sergey Matyunin