Near-zero-sweep arcs with large radius (e.g. from ellipse converter) have
nearly-coincident start/end points. Downstream code (ConvertProgram, Program
BoundingBox) treats coincident start/end as a full 360° circle, inflating the
bounding box and rendering wrong geometry. Emit a LinearMove when sweep is
negligible — geometrically equivalent and avoids the ambiguity. Also fix the
ellipse converter to produce lines instead of degenerate arcs at the source.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Circle.Rotation was lost in three places, causing reversed circles to
still offset inward instead of outward:
- ConvertGeometry.AddCircle hardcoded CCW instead of using circle.Rotation
- ConvertProgram.AddArcMove created Circle without setting Rotation from arc
- Shape.OffsetOutward/OffsetInward copied Circle without setting Rotation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Etch marks for up bends are now real geometry entities on an ETCH layer
instead of being drawn dynamically. They flow through the full pipeline:
entities → FilterPanel layers → ConvertGeometry (tagged as Scribe) →
post-processor sequencing before cut geometry.
Also includes ShapeProfile normalization (CW perimeter, CCW cutouts)
applied consistently across all import paths, and inward offset support
for cutout shapes in overlap/offset polygon calculations.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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