Port the WinForms GraphicsHelper program walker to a toolkit-neutral
figure list (move/line/arc) with its layer routing: cuts without tabs,
leads, etches, and a material fill without break cuts whose tab-gapped
pieces are bridged. Suppressed moves are skipped and marks never bound
the fill. PartDisplayGeometry picks the fill as LayoutPart does
(common-line members, break cuts, open cuts) and keeps display-only
entities; PartLabels ports the label points.
ViewTransform carries DrawControl's world/screen mapping and zoom rules.
PlateOverlays computes what the view draws around parts (sheet, edge
spacing, irregular usable area, clamps, cut-off strokes, rapids, pierce
points, cut direction, offset outline, support) through the existing
Core code. PlateViewOptions reads and writes the View toggles under the
WinForms PlateViewDrawRapid/PlateViewDrawBounds names.
WinForms still draws with GraphicsHelper; nothing there changes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>