Akiba So b359000991 feat: stroke spatial bounds + broad-phase visibility (board culling) ...

strokeBounds (tight AABB over normalized points, null for empty, zero-size for a
single point), strokesBounds (union), and strokeIntersects (does a stroke's box
overlap a viewport rect — touching edges count). Broad-phase primitive for the
infinite board: skip painting/erasing/hit-testing strokes off-screen (R1 perf),
and a cheap pre-filter before the exact per-point eraser test.

Pure geometry over EditorStroke; fully unit-tested.

flutter analyze lib/editor clean; 191/191 tests (+10).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-23 03:31:54 +08:00

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