初始化

tangxu

2023-11-12 8e7279907bb106a103d764d87a9ecf6ea200c93b

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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
 
namespace Hydro.Model
{
 
    public class Vector2d
    {
        double _x, _y;
 
        public Vector2d(Point pt)
        {
            _x = pt.X;
            _y = pt.Y;
        }
 
        public Vector2d(double x, double y)
        {
            _x = x; _y = y;
        }
 
        public Point ToPoint()
        {
            return new Point( _x,  _y);
        }
 
        public double X
        {
            get { return _x; }
            set { _x = value; }
        }
 
        public double Y
        {
            get { return _y; }
            set { _y = value; }
        }
 
        public static Vector2d operator *(double c, Vector2d v)
        {
            return new Vector2d(c * v.X, c * v.Y);
        }
 
        public static Vector2d operator *(Vector2d v, double c)
        {
            return new Vector2d(c * v.X, c * v.Y);
        }
 
        public static Vector2d operator /(Vector2d v, double c)
        {
            return new Vector2d(v.X / c, v.Y / c);
        }
 
        public static Vector2d operator +(Vector2d v1, Vector2d v2)
        {
            return new Vector2d(v1.X + v2.X, v1.Y + v2.Y);
        }
 
        public static Vector2d operator -(Vector2d v1, Vector2d v2)
        {
            return new Vector2d(v1.X - v2.X, v1.Y - v2.Y);
        }
    }
 
}