using System;
using System.Collections;
using System.Collections.Generic;/*** 向量的加法和减法运算*/
public class Vector3D
{public float x, y, z;public Vector3D(float x=0f,float y =0f,float z= 0f){this.x = x;this.y = y;this.z = z;}public Vector3D(Vector3D vec){this.x = vec.x;this.y = vec.y;this.z = vec.z;}public Vector3D add(Vector3D vec){Vector3D ret = new Vector3D(x, y, z);ret.x += vec.x;ret.y += vec.y;ret.z += vec.z;return ret;}public Vector3D sub(Vector3D vec){Vector3D ret = new Vector3D(x, y, z);ret.x -= vec.x;ret.y -= vec.y;ret.z -= vec.z;return ret;}//向量规范化(单位化),让向量的长度为1public void normalize(){float lenth = (float)Math.Sqrt(x * x + y * y + z * z);//取模x /= lenth;y /= lenth;z /= lenth;}public override string ToString(){return string.Format("(" + x + "," + y + "," + z + ")");}// 操作符重载public static Vector3D operator + (Vector3D lv,Vector3D rv){return lv.add(rv);}public static Vector3D operator - (Vector3D lv,Vector3D rv){return lv.sub(rv);}}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;/*** 自己写的Vector3D与u3d的Vector3比较验证是否正确*/
public class NewBehaviourScript : MonoBehaviour
{public bool isEqual(Vector3D ov,Vector3 uv){if (ov.x == uv.x && ov.y == uv.y && ov.z == uv.z){return true;}return false;}// Start is called before the first frame updatevoid Start(){Vector3D ov1 = new Vector3D(1.1f, 1.2f, 1.3f) + new Vector3D(1, 2, 3);Vector3 uv1 = new Vector3(1.1f, 1.2f, 1.3f) + new Vector3(1, 2, 3);if (isEqual(ov1, uv1)){Debug.Log("add equal...");}Vector3D ov2 = new Vector3D(1.1f, 1.2f, 1.3f) - new Vector3D(1, 2, 3);Vector3 uv2 = new Vector3(1.1f, 1.2f, 1.3f) - new Vector3(1, 2, 3);if (isEqual(ov1, uv1)){Debug.Log("sub equal...");}ov2.normalize();uv2.Normalize();if (isEqual(ov2, uv2)){Debug.Log("nrm equal...");}}// Update is called once per framevoid Update(){}
}