鼠标事件

    // Update is called once per frame
    //鼠标事件
    //1.当鼠标点击下去时调用,事件方法。点击Cube
    public void OnMouseDown()
    {
        print("Mouse Down");
    }

    //3. 当鼠标持续按下左键不放时调用
    public void OnMouseDrag()
    {
        print("Mouse Drag");
    }

    //2.当鼠标取消点击时调用
    public void OnMouseUp()
    {
        print("Mouse up");
    }

    //4.当鼠标进入到内部时调用
    public void OnMouseEnter()
    {
        print("Mouse enter");
    }

    //6.鼠标持续停留在游戏对象上调用
    public void OnMouseOver()
    {
        print("Over");
    }

    //5.当鼠标离开时调用
    public void OnMouseExit()
    {
        print("Mouse Exit");
    }

    //7. 当我们像点击按钮一样点击游戏对象，会触发UpAsButton。首先点击 松开鼠标时鼠标还在对象范围内才会执行UpAsButton
    public void OnMouseUpAsButton()
    {
        print("UpAsButton");    
    }