[Unity實戰]相機觀察物體，unity觀察物體

[Unity實戰]相機觀察物體，unity觀察物體

在原有的旋轉、縮放的基礎上加上了“慣性”。

using UnityEngine;using System.Collections;public class CameraObserve : MonoBehaviour {    public Transform targetObj;    public float rotateSpeed = 100f;    public float translateSpeed = 10f;    public float minDistance = 3f;//縮放觀察的最小距離    public float maxDistance = 15f;//縮放觀察的最大距離    public bool isInertiaRot = false;//鬆開左鍵後是否會繼續旋轉少量角度    public bool isInertiaTra = false;//不滾滾輪後是否會繼續前進少量距離    private float mouseXRecord;    private float mouseScrollRecord;// Update is called once per framevoid Update ()     {        float mouseX = Input.GetAxis("Mouse X");        float mouseScroll = Input.GetAxis("Mouse ScrollWheel");        if (Input.GetMouseButton(0))        {            if (mouseX != 0)            {                transform.RotateAround(targetObj.position, targetObj.up, mouseX * rotateSpeed * Time.deltaTime);                mouseXRecord = mouseX;            }        }        if (mouseScroll != 0)        {            //print(Vector3.Distance(targetObj.position,transform.position));            Vector3 a = transform.position + (targetObj.position - transform.position) * mouseScroll * translateSpeed * Time.deltaTime;            float distance = Vector3.Distance(targetObj.position, a);            if ((distance > minDistance) && (distance < maxDistance))                transform.position = a;            mouseScrollRecord = mouseScroll;        }         }    void LateUpdate()    {        if (isInertiaRot && Input.GetMouseButtonUp(0))        {            InvokeRepeating("Rotate",0,Time.deltaTime);            StartCoroutine(StopRotate(0.5f));        }        if (isInertiaTra && (Input.GetAxis("Mouse ScrollWheel") == 0) && (mouseScrollRecord != 0))        {            InvokeRepeating("Translate", 0, Time.deltaTime);            StartCoroutine(StopTranslate(2f));            isInertiaTra = false;        }    }    void Rotate()    {        transform.RotateAround(targetObj.position, targetObj.up, mouseXRecord * rotateSpeed * Time.deltaTime);    }    void Translate()    {        Vector3 a = transform.position + (targetObj.position - transform.position) * mouseScrollRecord * translateSpeed * Time.deltaTime;        float distance = Vector3.Distance(targetObj.position, a);        if ((distance > minDistance) && (distance < maxDistance))            transform.position = a;    }    IEnumerator StopRotate(float time)    {        yield return new WaitForSeconds(time);        CancelInvoke("Rotate");        mouseXRecord = 0;    }    IEnumerator StopTranslate(float time)    {        yield return new WaitForSeconds(time);        CancelInvoke("Translate");        mouseScrollRecord = 0;        isInertiaTra = true;    }}