private void Update()
{
Vector2 direction = lineEnd.position - lineStart.position;
//GeomUtil.Ray2DIntersectCircle(lineStart.position, direction, circleCenter.position, radius, out m_intersection1, out m_intersection2);
int intersectionCount = GeomUtil.LineSegmentIntersectCircle(lineStart.position, lineEnd.position, circleCenter.position, radius, out m_intersection1, out m_intersection2);
Debug.Log("线段与圆交点的数量：" + intersectionCount);
}