Files
houseplan-card/docs
Matysh 5e5c06f126 OPENING DRAG: shoulder rulers + center tick with a soft magnet (owner 2026-08-03)
While an opening is dragged along a wall, a measure badge sits on the middle
of EACH shoulder: the along-the-wall distance from the wall end to the nearest
opening edge, live (segmentCm/formatLength, so metric/imperial and cell_cm are
honoured). Collinear touching room edges count as ONE physical wall — a user
thinks in whole walls, not the fragments roomEdges derives. When the opening's
center reaches the wall's center (±half a grid step) a perpendicular dashed
tick (alignment-guide look) appears through the wall center and the center
magnet-snaps; Shift disables the magnet. Everything vanishes on release.
Angled walls work: distances run along the wall, the tick is perpendicular.

- src/logic.ts: openingShoulders() — pure shoulder/centered math (unit-tested)
- src/houseplan-card.ts: _opMeasure state fed by _opPointerMove, badge layer
  next to the resize badges, _renderOpeningCenterTick in the SVG
- demo/smoke_opening_measure.mjs: real-pointer drag; numbers checked against
  the demo geometry (4.56/5.52 m, 5.04/5.04 m at center), magnet == 0.5,
  Shift keeps 0.4987, everything gone after drop (was red without the feature)
- docs/TESTING.md: checklist line
2026-08-03 11:59:57 +03:00
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