hitTest method

@override bool hitTest(DiagramPoint point, { required double tolerance, })

Picking with a caller tolerance. Closed outlines pick their interior only; stroke-like outlines widen their stroke to tolerance instead of the fixed diagramStrokeHitTolerance used by contains.

Implementation

@override
bool hitTest(DiagramPoint point, {required double tolerance}) =>
    (closed && pointInPolygon(point, points)) ||
    _nearPolyline(point, points, tolerance);