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Reaction / network edge shafts in document space.

Ports the Python draw/arrows.py route cleanup + paint helpers so hosts share one implementation (orthogonal stays axis-aligned; polyline fillets).

Structs

EdgePaintIn

Minimal shaft/head paint request (host supplies resolved route points).

Enums

EdgePrim

One SVG-ish path or text fragment for overlays.

Constants

ANCHOR_GAP

Gap from molecule viewport edge to shaft anchors (document px).

KINK_PX

Flatten tiny orthogonal/polyline jogs under this length (px).

TURN_RADIUS

Corner fillet radius for non-orthogonal (polyline) bends (px).

Functions

axis_aligned

True when every segment is horizontal or vertical.

clip_box_edge

Axis-aligned box around (cx,cy) clipped toward (tx,ty).

edge_anchors

Viewport-boundary anchors between two molecule boxes.

edge_primitives

Build overlay primitives for one edge given a resolved route.

filleted_path_d

Polyline with quadratic fillets at corners (larger radius → softer turns).

shaft_path_d

Path d for a shaft: fillet polyline turns; keep orthogonal H/V sharp.

should_fillet

Fillet soft polyline turns; keep orthogonal shafts axis-aligned.

simplify_route

Drop near-duplicates and flatten kinks under kink_px.

Type Aliases

Pt

Document-space point.