X,Y,Z,a,b,c
0,0,0,0,0.5,1
0,0,1,0,0.5,1
0,1,0,0,0.5,1
0,1,1,0,0.5,1
1,0,0,0,0.5,1
1,0,1,0,0.5,1
1,1,0,0,0.5,1
1,1,1,0,0.5,1