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ajandClaude Opus 5.5
9b9386b029
Per-entity offsetting left spikes and inverted loops wherever a feature is narrower than the spacing (1.nest), and RemoveSelfIntersections only caught proper crossings. The callers that already flatten to polygons now take a single Clipper region offset instead: - PolygonHelper (BestFit) and PartBoundary use the conservative mode, which keeps their never-under-estimate guarantee. PartBoundary also keeps holes that appear when a perimeter curls back on itself. - NestValidator offsets perimeter and cutouts in one region; Clipper drops collapsed cutouts, so the collapsed-or-flipped heuristic goes away. - CutOff.IntersectPerimeter offsets through the bridge. The old OffsetEntity(Left) grew CW perimeters but shrank CCW ones, so with the plate's perimeter cache a cut-off ran through the part; slots narrower than twice the clearance now close up instead of leaving a gap. - GetOffsetPartLines (3 overloads) and the AddOffset* helpers had no callers and are removed, as is EntityView's never-defined DRAW_OFFSET block. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>