向3D进军 1) 生成一个3D的四棱锥；对其进行平滑着色；3D的立方体，对其进行单调着色，并使立方体的每个面着上不同的颜色。 -To the 3D into one) to generate a 3D four-pyramid its smooth shading 3D cube, rendering them monotonous and cube of each face a different color.