建立一个类，可以实现画斜椭圆，里面重载多个函数，可以根据你的需要进行绘制斜椭圆！

建立一个类，可以实现画斜椭圆，里面重载多个函数，可以根据你的需要进行绘制斜椭圆！-The establishment of a category, you can realize oblique oval painting, which more than overloaded function, according to your need for rendering oblique elliptical!