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。

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To draw an object calling itself, you draw a message as you would normally, but instead of connecting it to another object, you connect the message back to the object itself.

为了要画一个调用本身的对象，如你平时所作的，画一条消息，但是不是连接它到另外的一个对象，而是你把消息连接回对象本身。

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They begin, in other words, with the object in question and then draw conclusions from it.

换句话说，他们从有问题的物体入手，然后从它得出结论。

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When objects are made up of a set number of polygons, the computer usually has to draw them all regardless of whether the object is right up front or a mile away.

ECONOMIST: Smooth operator | The

When objects are described with mathematically defined curves, however, the computer can decide how many polygons to draw, depending on how far away the object is meant to be.

ECONOMIST: Smooth operator | The

You just draw a sketch on a computer or tablet, click print, and the attached printer turns it into a 3D object.

FORBES: My Kindergartner Can 3D Print. So Can Yours.