unity学习知识（2）--镜头的远近变化代码（狙击镜）

设置Camera的FOV属性实现：

按下镜头拉近，再按下拉远

逐渐拉近

缩放等级变化

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class CareamZoom : MonoBehaviour
{// Start is called before the first frame updateprivate Camera camera;void Start(){camera = GetComponent<Camera>();}private bool isFar =true;// Update is called once per framevoid Update(){plan1();}private void plan1(){if (Input.GetMouseButtonDown(1)){//拉远60isFar = !isFar;if (isFar){camera.fieldOfView = 60;}//拉近20elsecamera.fieldOfView = 20;}}private void plan2(){if (Input.GetMouseButtonDown(1)){//拉远60isFar = !isFar;if (isFar){//if(camera.fieldOfView<60)//camera.fieldOfView += 2;camera.fieldOfView= Mathf.Lerp(camera.fieldOfView, 60, 0.1f);//起点，终点，比例 但不会等于终点if (Mathf.Abs(camera.fieldOfView - 60) < 0.1f)camera.fieldOfView = 60;}//拉近20elseif (camera.fieldOfView >20)camera.fieldOfView -= 2;/* camera.fieldOfView = Mathf.Lerp(camera.fieldOfView, 20, 0.1f);if (Mathf.Abs(camera.fieldOfView - 20) < 0.1f)camera.fieldOfView = 20;*/}}
}