'宣言 Public Shared Function IsPointNearSegment( _ ByVal targetPoint As Point, _ ByVal currStart As Point, _ ByVal currSegment As PathSegment, _ ByVal closeness As Double _ ) As Tuple(Of Boolean,Point)
public static Tuple<bool,Point> IsPointNearSegment( Point targetPoint, Point currStart, PathSegment currSegment, double closeness )