But because your visual system interprets the two-dimensional drawing as three-dimensional reality, you see the right side "in shade" and so perceive the right-side dot as bright, even glowing.

但是由于视觉系统将二维的图像转译为真实的三维，因此你会觉得右边的圆点会更亮更闪。

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Other examples of direct manipulation are the resizing of a graphic object in a drawing application and the positioning of an object or camera view in a three-dimensional scene.

其他的一些直接操作的例子如在画图类的程序中调整图像的大小，在三维场景中移动对象和视角等。

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In this thesis, the designing method of computer-controlled system in three-dimensional drawing bed was discussed and a simple computer-controlled system was developed.

本文对三维牵引床计算机控制系统设计方法进行了探讨，并设计出一套简单的控制系统。

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