设置texture

//获取内部资源贴图

    public void setInsideTexture()

    {

        Texture2D texture = Resources.Load(texture_url) as Texture2D;

        Renderer renderer = GetComponent<Renderer>();

        renderer.material.mainTexture = texture;

    }

    //获取外部资源贴图(本地路径)

    public void setExternalTextureByIO()

    {

        //创建文件读取流

        FileStream fileStream = new FileStream(texture_url, FileMode.Open,

            FileAccess.Read);

        fileStream.Seek(, SeekOrigin.Begin);

        //创建文件长度缓冲区

        byte[] bytes = new byte[fileStream.Length];

        //读取文件

        fileStream.Read(bytes, , (int) fileStream.Length);

        //释放文件读取流

        fileStream.Close();

        fileStream.Dispose();

        fileStream = null;

        //创建Texture

        int width = ;

        int height = ;

        Texture2D texture = new Texture2D(width, height);

        texture.LoadImage(bytes);

        Renderer renderer = GetComponent<Renderer>();

        renderer.material.mainTexture = texture;

    }

    /// <summary>

    /// 以WWW方式进行加载

    /// </summary>

    private void setExternalTextureByWWW()

    {

        StartCoroutine(LoadWWW());

    }

    IEnumerator LoadWWW()

    {

        //请求WWW

        WWW www = new WWW(texture_url);

        yield return www;

        Renderer renderer = GetComponent<Renderer>();

        renderer.material.mainTexture = www.texture;

        Debug.Log(www.ToString());

        Stream outStream = File.Create(ExportClass.prePath + "test.png");

        byte[] buffer = www.bytes;

        outStream.Write(buffer, , buffer.Length);

        outStream.Close();

    }

/// <summary>
/// 根据json image中的base64数据还原贴图.
/// </summary>
/// <param name="imageStr"></param>
private void setTextureByJsonData(string imageStr)
{
    Debug.Log("开始 设置 材质球 来自json的贴图...");
    var base64Data = Regex.Match(imageStr, @"data:image/(?<type>.+?),(?<data>.+)").Groups["data"].Value;
    byte[] bytes = Convert.FromBase64String(base64Data);
    Texture2D tex = new Texture2D(100,100);
    tex.LoadImage(bytes);
    Renderer renderer = game.GetComponent<Renderer>();
    renderer.material.SetTexture("_MainTex",tex);
}