WeiBlog

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

public bool isFar = true;
private Camera camera;

public int[] zoomLevel;
private int index;
private Vector3 lo;
private Quaternion ro;



private void Start()
{
    camera = GetComponent<Camera>();
    lo = this.transform.position;
    ro = this.transform.rotation;
}

private void Update()
{
    isDown = Input.GetMouseButton(0);//左键

    keyDown = Input.GetKey(KeyCode.Q);

    CamerPosition();

    if (keyDown)
        Zoom4();


    cvDown = Input.GetKey(KeyCode.C) && Input.GetKey(KeyCode.V);


}

private void CamerPosition()
{

    if (keyDown)
    {
        this.transform.position = this.transform.parent.position;
        this.transform.rotation = this.transform.parent.rotation;
    }
    else
    {
        this.transform.position = l1.position;
        this.transform.rotation = l1.rotation;
        index = 0;
        camera.fieldOfView = zoomLevel[index ];
    }
}

private void Zoom1()
{
    if (Input.GetMouseButtonDown(1))
    {
        //拉近：10
        isFar = !isFar;

        if (isFar)
        {
            camera.fieldOfView = 50;
            //拉远：50
        }
        else
        {
            camera.fieldOfView = 10;
        }

    }
}

private void Zoom2()
{
    if (Input.GetMouseButtonDown(1))
    {
        isFar = !isFar;
    }
    if (isFar)
    {
        if (camera.fieldOfView < 50)
            camera.fieldOfView += 2;
        //拉远：10-->50
    }
    else
    {
        //拉近：50-->10
        if (camera.fieldOfView > 10)
            camera.fieldOfView -= 2;
    }
}

private void Zoom3()//先快后慢 Lerp (起点，终点，比例0.1)第一次返回起点到终点0.1的值
{
    if (Input.GetMouseButtonDown(1))
    {
        isFar = !isFar;
    }
    if (isFar)
    {
        //拉远：10-->50
        camera.fieldOfView = Mathf.Lerp(camera.fieldOfView, 50, 0.1f);//无限接近50，不等于
        if (Mathf.Abs(camera.fieldOfView - 50) < 0.1) camera.fieldOfView = 50;//使无限接近时，等于
    }
    else
    {
        //拉近：50-->10
        camera.fieldOfView = Mathf.Lerp(camera.fieldOfView, 10, 0.1f);
        if (Mathf.Abs(camera.fieldOfView - 10) < 0.1) camera.fieldOfView = 10;
    }
}

private void Zoom4()//
{
    if (Input.GetMouseButtonDown(1))
    {
        //index = index < zoomLevel.Length - 1 ? index + 1 : 0;
        index = (index + 1) % zoomLevel.Length;
        //index++;
        //if (index >= zoomLevel.Length)
        //index = 0;
    }

    camera.fieldOfView = Mathf.Lerp(camera.fieldOfView, zoomLevel[index], 0.1f);//无限接近50，不等于
    if (Mathf.Abs(camera.fieldOfView - zoomLevel[index]) < 0.1) camera.fieldOfView = zoomLevel[index];//使无限接近时，等于

}

}