Group all the shapes used to compose the robot and Add a Layer Mask, as previously done, to obtain the following result.

把这些形状归成一组，组成机器人，并添加一个图层蒙版，以前也做过，得到以下结果。

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In both 2D and 3D, when we draw an object we compose it with several smaller shapes called primitives which as 1 or 2 dimensional entities such as points, lines, and polygons.

在二维或三维中，当我们用他们构建了一些斗劲小的图像，比如点线和多边形，这些被称为根蒂根基图元，一个物体的每一个角落构成的元素是一个顶点。

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