fix(viewer2d): show lineweight at AutoCAD's display scale (20 px/mm)

Hand test against an AutoCAD capture: the 0.50mm road edge is ~10px there but only ~4px here. Lineweight is zoom-independent screen pixels, so the two captures compare directly - the 8 px/mm mapping was 2.5x too small. AutoCAD's default display scale is one pixel per 0.05mm, so use 20 px/mm (0.35mm = 7px, 0.50mm = 10px, 2.11mm = 42px) and raise the clamp to 48px. Add setLineweightScale()/getLineweightScale() so a host can retune it - AutoCAD exposes the same thing as the Adjust Display Scale slider. Re-measured headless: the 0.35mm road-gutter line now renders ~7px, so both weight classes land on the same scale. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 20:34:27 +09:00
parent ce3859c487
commit cf1298749b
5 changed files with 6051 additions and 11 deletions
@@ -198,7 +198,7 @@
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