Point origin = new Point();
 Point bottom = new Point(1, 2);
书上例子的一部分，不太明白，左边是创建对象，右边是
调用函数，怎么是等价呢？

原程序是：
using System;
class Point
{
    public Point()
    {
        this.x = 1;
        this.y = 1;
    }
    public Point(int x, int y)
    {
        this.x = x;
        this.y = y;
    }
    public double Distance(Point other)
    {
        int xDiff = this.x - other.x;
        int yDiff = this.y - other.y;
        return Math.Sqrt(xDiff * xDiff + yDiff * yDiff);   
    }
    private int x,y;
}

class Program
{
    static void Main()
    {
        Point origin = new Point();
        Point bottom = new Point(1, 2);
        double distance = origin.Distance(bottom);
        Console.WriteLine("Distance is:{0}", distance);
    }
}
本人刚学，还在模仿阶段，请指教。

这个new Point()的Point到底是调用构建函数还是新建一个Point的类