cube_none.api_test

-1  1  1
 0  1  1
 1  1  1
-1  0  1
 0  0  1
 1  0  1
-1 -1  1
 0 -1  1
 1 -1  1
-1  1  0
 0  1  0
 1  1  0
-1  0  0
 0  0  0
 1  0  0
-1 -1  0
 0 -1  0
 1 -1  0
-1  1 -1
 0  1 -1
 1  1 -1
-1  0 -1
 0  0 -1
 1  0 -1
-1 -1 -1
 0 -1 -1
 1 -1 -1