我们要创建我们的第一个3D对象：立方体。为了要显示它是真正的3D对象，呵呵，我们要旋转它，这样，你将会看到它的各个面。记住：所有的3D对象都是由三角形构成的（译者：神奇的三角形啊…读者：又来了），所以，我们的立方体是由12个三角形构成的（6个面，每个面需要2个三角形，二六一十二，乘法口诀，会不？）。-we must establish our first 3D objects : cube. To show that i s true 3D objects, huh, we should rotating it, then you will see all its surface. Remember : All 3D objects are constituted by the triangle (Translator : magic triangle ah ... Readers : Here we go again), so we are the cube 12 by the triangular composition (six surface, each side needs two triangles, Erliuyishier, multiplication traditional formulas, will not?) .