You can rotate your square by defining how you draw your object.
您可以通过定义对象的绘制方式来旋转您的正方形。
That means you want to draw all the forces on that object.
你需要画出这个，物体所受的所有力。
To start with, all you need is the render method to draw the object.
要开始使用这个接口，您所需要做的就是使用render方法来画这个对象。
In the object Editor, create a Lathe object and draw the profile of the object.
在对象编辑器，创建一个车削对象并绘出对象的轮廓。
To display an object track, draw a map for the time and date of the start of the track, and locate the object on the map.
要显示一个物体的轨迹，按照你要观察的轨迹起点日期新建一张星图，并在星图上选择这个天体。
To display an object track, draw a map for the time and date of the start of the track, and locate the object on the map.
要显示一个物体的轨迹，按照你要观察的轨迹起点日期新建一张星图，并在星图上选择这个天体。
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