using UnityEngine;

using System.Collections;

[RequireComponent(typeof(Camera))]

public class UIModelCamera : MonoBehaviour {

    //Render Texture属性

    public int Width=;

    public int Height = ;

    public int Depth = ;

    //所要观看的模型

    public GameObject Model;

    //距离模型所在位置的偏移

    public Vector3 Offset;

    //观看模型所在位置的偏移

    public Vector3 LookAtOffset;

    //哪个UITexture要使用这个相机所渲染的Render Texture

    public UITexture Texture;

    private RenderTexture mRenderTexture;

    private Camera mCamera;

    void Awake()

    {

        mCamera = gameObject.GetComponent<Camera>();

        mRenderTexture = new RenderTexture(Width, Height, Depth);

        mCamera.targetTexture = mRenderTexture;

    }

    // Use this for initialization

    void Start () {

        SetModel(Model);

        SetTexture(Texture);

    }

    void OnDestroy()

    {

        Destroy(mRenderTexture);

    }

    //设置所有观看的模型

    public void SetModel(GameObject obj)

    {

        Model = obj;

        if(null!=Model)

        {

            gameObject.transform.position = Model.transform.position + Offset;

            gameObject.transform.forward = Model.transform.position + LookAtOffset - gameObject.transform.position;

            mCamera.cullingMask = <<Model.layer;

        }

    }

    //

    public void SetTexture(UITexture texture)

    {

        Texture = texture;

        if (null != Texture)

        {

            Texture.mainTexture = GetRenderTexture();

        }

    }

    public RenderTexture GetRenderTexture()

    {

        return mRenderTexture;

    }

#if UNITY_EDITOR

    void Update()

    {

        SetModel(Model);

        SetTexture(Texture);

    }

#endif

}