[Unity菜鸟] 摄像机视角控制

1. 摄像机预览物体 上下左右远近

    把CameraFollow脚本赋给Camera，把要观察的对象赋给target 

using UnityEngine;

using System.Collections;



public class CameraFollow : MonoBehaviour

{

	public Transform target;

	public float targetHeight;

	public float distance;

	public int maxDistance;

	public float minDistance;

	public float xSpeed;

	public float ySpeed;

	public int yMinLimit;

	public int yMaxLimit;

	public int zoomRate;

	public float rotationDampening;

	private float x;

	private float y;



	public CameraFollow()

	{

		this.targetHeight = 2f;

		this.distance = 5f;

		this.maxDistance = 20;

		this.minDistance = 2.5f;

		this.xSpeed = 250f;

		this.ySpeed = 120f;

		this.yMinLimit = -20;

		this.yMaxLimit = 80;

		this.zoomRate = 20;

		this.rotationDampening = 3f;

	}

	public void Start()

	{

		Vector3 eulerAngles = this.transform.eulerAngles;

		this.x = eulerAngles.y;

		this.y = eulerAngles.x;

		if (this.rigidbody)

		{

			this.rigidbody.freezeRotation = true;

		}

	}

	public void LateUpdate()

	{

		if (this.target)

		{

			if (Input.GetMouseButton(1) || Input.GetMouseButton(1))

			{

				this.x += Input.GetAxis("Mouse X") * this.xSpeed * 0.02f;

				this.y -= Input.GetAxis("Mouse Y") * this.ySpeed * 0.02f;

			}

			else

			{

				if (Input.GetAxis("Vertical") != (float)0 || Input.GetAxis("Horizontal") != (float)0)

				{

					float num = this.target.eulerAngles.y;

					float num2 = this.transform.eulerAngles.y;

					this.x = Mathf.LerpAngle(num2, num, this.rotationDampening * Time.deltaTime);

				}

			}

			this.distance -= Input.GetAxis("Mouse ScrollWheel") * Time.deltaTime * (float)this.zoomRate * Mathf.Abs(this.distance);

			this.distance = Mathf.Clamp(this.distance, this.minDistance, (float)this.maxDistance);

			this.y = ClampAngle(this.y, (float)this.yMinLimit, (float)this.yMaxLimit);

			Quaternion quaternion = Quaternion.Euler(this.y, this.x, (float)0);

			Vector3 position = this.target.position - (quaternion * Vector3.forward * this.distance + new Vector3((float)0, -this.targetHeight, (float)0));

			this.transform.rotation = quaternion;

			this.transform.position = position;

		}

	}

	public  float ClampAngle(float angle, float min, float max)

	{

		if (angle < (float)-360)

		{

			angle += (float)360;

		}

		if (angle > (float)360)

		{

			angle -= (float)360;

		}

		return Mathf.Clamp(angle, min, max);

	}

	

}

　　

 

2. 摄像机围绕物体旋转

using UnityEngine;

using System.Collections;



public class CameraVirtual : MonoBehaviour

{

    //旋转的物体

    public GameObject building;



    //用来记录鼠标的位置，以便计算旋转幅度

    Vector2 p1, p2; 



    // Update is called once per frame

    void Update()

    {

        if (Input.GetMouseButtonDown(1))

        {

            p1 = new Vector2(Input.mousePosition.x, Input.mousePosition.y);//鼠标右键按下时记录鼠标位置p1

        }

        if (Input.GetMouseButton(1))

        {

            p2 = new Vector2(Input.mousePosition.x, Input.mousePosition.y);//鼠标右键拖动时记录鼠标位置p2

            //下面开始旋转，仅在水平方向上进行旋转

            float dx = p2.x - p1.x;

            transform.RotateAround(building.transform.position, Vector3.up, dx * Time.deltaTime);

        }

    }



}

 

 

 

 

 

 

 

 

参考： 1