hitTest method

@override bool hitTest(Offset point)

Implementation

@override
bool hitTest(Offset point) {
  if (startPoint == null || endPoint == null) return false;

  // 简单的线段点击检测
  const tolerance = 5.0;
  final distance =
      DrawingTool.distanceFromPointToLine(point, startPoint!, endPoint!);
  return distance <= tolerance;
}