'宣言 Public Shared Function GetCircleIntersection( _ ByVal startPoint As Point, _ ByVal endPoint As Point, _ ByVal circleCenter As Point, _ ByVal circleRadius As Double _ ) As Tuple(Of Point,Point)
public static Tuple<Point,Point> GetCircleIntersection( Point startPoint, Point endPoint, Point circleCenter, double circleRadius )