Unity设备展示中使用鼠标对摄像机画面的控制及镜头复位

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前言

日常开发中，模型的展示需要使摄像机画面聚焦在模型上，分享下鼠标控制的方法。代码中用到了DoTween插件的功能，大家自行下载导入。

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一、控制代码

using DG.Tweening;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CameraControlObj : MonoBehaviour
{
   
    public bool isControl=false;
    private Vector3 v3init;
    public float xMinLimit = -360f;
    public float xMaxLimit = 360f;
    public float yMinLimit = 0f;
    public float yMaxLimit = 80f;
    public float xSpeed = 50.0f;
    public Transform target;
    public float distance = 10.0f;
    public float nearLimit = 1.0f;
    public float farLimit = 80.0f;
    public float movSpeedScroll = 5.0f;
    public float movSpeed = 0.005f;
    public float x;
    public float y;
    public float z;

    Vector3 v3Pos;
    float v3Distance;

    Quaternion rotation;
    Vector3 position;
    // Use this for initialization
    void Start()
    {
   
          ParamInit();

    }

    private bool bFstTouch;
    private Vector3 vCurPos;
    private Vector3 vOrgPos;
    private float yDis;
    private float xDis;
    private Touch touch1;
    private Touch touch2;
    private Touch touch3;
    private float touchDistance;
    private float lastTouchDistance;
    private float deltaDistance;
    public void ParamInit()
    {
   
        //v3init = target.position;
        //v3Pos = new Vector3(x, y, z);
        //v3Distance = distance;

    }
   

    // Update is called once per frame
    public void Update()
    {
   
       
        if (target==null|| !isControl)
        {
   
            return;
        }
        //if (Input.GetMouseButtonDown(0))
        //{
   
        //    target.position= v3init;
        //    distance = v3Distance;
        //    x = v3Pos.x;
        //    y = v3Pos.y;
        //    z = v3Pos.z;
        //}

        if (Application.platform == RuntimePlatform.WindowsEditor || Application.platform == RuntimePlatform.WebGLPlayer || Application.platform == RuntimePlatform.WindowsPlayer)
        {
   
            if (Input.GetMouseButton(1))
            {
   
                x += Input.GetAxis("Mouse X") * xSpeed * 0.02f;
                x = ClampAngle(x, xMinLimit, xMaxLimit);
                y -= Input.GetAxis("Mouse Y") * xSpeed * 0.02f;
                y = ClampAngle(y, yMinLimit, yMaxLimit);

            }
            else if (Input.GetMouseButton(0))