/// <summary>
/// 判断点是否在轮廓里面
/// </summary>
/// <param name="pos"></param>
/// <returns></returns>
public bool CheckIn(Float2 pos)
{
Polygon2D poly = new Polygon2D(pts.ToArray());
bool ret = poly.CheckIn(new Double2(pos.x, pos.y));
return(ret);
}