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。

youdao

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。

youdao

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。

youdao