unity摄像机跟随

using UnityEngine;
public class Test : MonoBehaviour
{
    public float distanceAway = 5;  //距离
    public float distanceHigh = 2;    //相对高度
    public float moveSpeed = 3;      //相机移动速度
    public Transform Target;
    void Start() { }
    void LateUpdate()
    {
        //Follow1();
        Follow2();
    }

//1、始终跟随在玩家后方
  void Follow1()
    {
        Vector3 targetPosition = Target.position + Vector3.up * distanceHigh - Target.forward * distanceAway;
        transform.position = Vector3.Lerp(transform.position, targetPosition, Time.deltaTime * moveSpeed);
        transform.LookAt(Target);
    }

//2、不根据玩家朝向改变，可以改变Angle选择观察角度

  public float rollAngle = 30f * Mathf.PI * 2 / 360;   //摄像机朝向与XZ平面角度
    public float Angle = 0;   //摄像机朝向与YZ平面角度
    void Follow2()
    {
        Vector3 cameraPos;

        float dis = distanceAway * Mathf.Cos(rollAngle);
        float height = distanceAway * Mathf.Sin(rollAngle);

        cameraPos.x = Target.position.x + dis * Mathf.Cos(Angle);
        cameraPos.z = Target.position.z + dis * Mathf.Sin(Angle);
        cameraPos.y = Target.position.y + height;
        transform.position = Vector3.Lerp(transform.position, cameraPos, Time.fixedDeltaTime * moveSpeed);

        transform.LookAt(Target);
    }
}