一、创建场景，且添加一些物体，还有搭建按钮面板及其按钮
二、创建基础的控制摄像机移动脚本
/***
* Title："测试" 项目
* 主题：测试摄像机的视角切换
* Description：
* 功能：XXX
* Date：2017
* Version：0.1版本
* Author：Coffee
* Modify Recoder：
*/
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
namespace SimpleUIFrame
{
public class Test_ViewChange : MonoBehaviour
{
public Camera MainCamera; //主摄像机
public Transform LookAtTarget; //摄像机看向的目标
public float CameraDistance = 6.0F; //摄像机与看向目标的距离
public float CameraHeight = 3.0F; //摄像机高度
public float CmaeraOffset = 1.0F; //摄像机的偏移
public float MainCameraMoveSpeed = 2F; //主摄像机移动的速度
public float waitTime=0F; //等待摄像机移动到设备附近的时间
private Vector3 LookAtTargetPosition; //看向目标时的位置
private Quaternion LookAtTargetRotation; //看向目标，且旋转
public bool IsLookAtAppointTarget=false; //是否看向指定的物体
public bool IsBack = false;
private Vector3 _MainCameraOriginalPosition; //主摄像机的原始位置
public IEnumerator Start()
{
yield return new WaitForSeconds(0.1F);
//记录主摄像机的原始位置
if (MainCamera!=null)
{
_MainCameraOriginalPosition = new Vector3(MainCamera.transform.localPosition.x, MainCamera.transform.localPosition.y, MainCamera.transform.localPosition.z);
print("主摄像机的原始位置的X="+_MainCameraOriginalPosition.x);
print("主摄像机的原始位置的Y=" + _MainCameraOriginalPosition.y);
print("主摄像机的原始位置的Z=" + _MainCameraOriginalPosition.z);
print("主摄像机的原始位置的Z=" + _MainCameraOriginalPosition.z);
}
}
private void FixedUpdate()
{
if (IsLookAtAppointTarget==true)
{
MainCamera.transform.position = Vector3.Lerp(MainCamera.transform.position, LookAtTargetPosition, Time.deltaTime * MainCameraMoveSpeed);
MainCamera.transform.LookAt(LookAtTarget);
// StartCoroutine(Stop(waitTime));
}
if (IsBack==true)
{
MainCamera.transform.position = Vector3.Lerp(MainCamera.transform.position, LookAtTargetPosition, Time.deltaTime * MainCameraMoveSpeed);
//StartCoroutine(Stop(waitTime));
}
}
/// <summary>
/// 摄像机看向指定物体的方法
/// </summary>
public void LookAtAppointTarget()
{
if (LookAtTarget != null)
{
LookAtTargetPosition = new Vector3(LookAtTarget.transform.position.x + CmaeraOffset, LookAtTarget.transform.position.y + CameraHeight, LookAtTarget.transform.position.z + CameraDistance);
IsLookAtAppointTarget = true;
}
else
{
Debug.LogError(GetType()+ "/LookAtAppointTarget()/看向的物体不存在，请检查！！！");
}
}
//摄像机返回原始位置
public void ReturnOriginalPosition()
{
LookAtTargetPosition = new Vector3(_MainCameraOriginalPosition.x, _MainCameraOriginalPosition.y, _MainCameraOriginalPosition.z);
IsBack = true;
}
IEnumerator Stop(float waitTime)
{
yield return new WaitForSeconds(waitTime);
if (IsLookAtAppointTarget==true)
{
IsLookAtAppointTarget = false;
print("IsLookAtAppointTarget=" + IsLookAtAppointTarget);
}
if (IsBack==true)
{
IsBack = false;
print("IsBack=" + IsBack);
}
}
}//class_end
}
三、创建控制摄像机移动到物体附近的脚本
/***
* Title："XXX" 项目
* 主题：XXX
* Description：
* 功能：XXX
* Date：2017
* Version：0.1版本
* Author：Coffee
* Modify Recoder：
*/
using kernal;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
namespace SimpleUIFrame
{
public class Test_SingleViewChange : Test_ViewChange
{
public Camera MainCamera1;
public Transform sphere;
public Transform cube;
private Button BtnSphere; //查看圆球按钮
private Button BtnCube; //查看Cube按钮
private void Awake()
{
//RigisterBtn1();
}
private void Start()
{
base.MainCamera = MainCamera1;
StartCoroutine(base.Start());
}
//靠近圆球方法
public void CloseShere()
{
base.LookAtTarget = sphere;
base.LookAtAppointTarget();
}
//靠近Cube方法
public void CloseCube()
{
base.LookAtTarget = cube;
base.LookAtAppointTarget();
}
}
}
四、将 Test_SingleViewChange 脚本挂载到脚本管理器上，然后指定对应的主摄像机、需要移动到的物体
五、然后分别给对应的查看圆球、看向Cube、返回原位的按钮指定对应的方法
六、运行场景，然后分别点击
查看圆球、看向Cube、摄像机就会移动到对应的物体附近，点击返回原位的按钮则摄像机返回初始位置
