The BoxObject handles the viewport translation in the render method and calls the draw method with the physical coordinates.

BoxObject在render方法中实现viewport的转换，并使用物理坐标来调用draw方法。

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The BoxObject handles the viewport translation in the render method and calls the draw method with the physical coordinates.

BoxObject在render方法中实现viewport的转换，并使用物理坐标来调用draw方法。

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