Accordingly, if you want to map the lower left corner (-1, -1) of the cube's front face to the texture's lower left corner, you must assign the texture coordinates (0, 1) to vertex 0.
相应地,如果您需要将立方体正面的左下角映射到纹理的左下角,必须将纹理坐标(0,1)指派给顶点0。
For a triangle in a given 3-d mesh, the order in which the triangle's vertex positions are specified determines whether the triangle face is a front or back face.
如果是指定的3 - d网状结构中的三角形,三角形顶点位置的指定顺序会决定三角形表面是正对面或背对面。
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