Unity/c#鼠标右键控制相机围绕物体旋转/滚轮控制远近

鼠标右键控制相机围绕物体旋转/滚轮控制远近

#c#代码`
鼠标右键控制相机围绕物体旋转/滚轮控制远近

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MoveModel : MonoBehaviour
{
    public Camera cam;//相机
    public float spee = 10;//速度
    float x = 0, y = 0;
    public float m_camFieldOfViewMin;
    public float m_camFieldOfViewMax;
    private void Awake()
    {
        m_camFieldOfViewMin = 15;
        m_camFieldOfViewMax = 100;
    }
    void move()
    {
        
        x= Input.GetAxis("Mouse X") * spee;
        y += Input.GetAxis("Mouse Y") * spee;//定义在x,y轴上移动
        cam.transform.RotateAround(transform.position, Vector3.up, x);
        cam.transform.localEulerAngles = new Vector3(-y, cam.transform.localEulerAngles.y, 0);//相机移动（旋转角度）
    }
    // Update is called once per frame
    void Update()
    {
        if (Input.GetMouseButton(1))
        {
            move();
        }
        if (Input.GetAxis("Mouse ScrollWheel") < 0)
        {
            if (cam.fieldOfView < m_camFieldOfViewMax)
            {
                cam.fieldOfView += 2;
            }
            if (cam.orthographicSize <= 10)
            {
                cam.orthographicSize += 1f;
            }
        }
        if (Input.GetAxis("Mouse ScrollWheel") > 0)
        {
            if (cam.fieldOfView > m_camFieldOfViewMin)
            {
                cam.fieldOfView -= 2;
            }
            if (cam.orthographicSize >= 1)
            {
                cam.orthographicSize -= 1f;
            }
        }
    }
}

代码给物体，把相机拖到cam
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