# definition of the first brick
# vertex definition 
vertex 1 xyz 0.0 0.0 0.0 
vertex 2 xyz 1.0 0.0 0.0 
vertex 3 xyz 1.0 1.0 0.0 
vertex 4 xyz 0.0 1.0 0.0 
vertex 5 xyz 0.0 0.0 1.0 
vertex 6 xyz 1.0 0.0 1.0 
vertex 7 xyz 1.0 1.0 1.0 
vertex 8 xyz 0.0 1.0 1.0 
# definition of curves conecting verteces
curve 1 vertex 1 2 
curve 2 vertex 2 3 
curve 3 vertex 3 4 
curve 4 vertex 4 1 
curve 5 vertex 5 6 
curve 6 vertex 6 7 
curve 7 vertex 7 8 
curve 8 vertex 8 5 
curve 9 vertex 1 5 
curve 10 vertex 2 6 
curve 11 vertex 3 7 
curve 12 vertex 4 8 
# surface definition
surface 1 curve 1 2 3 4 
surface 2 curve 8 7 6 5 
surface 3 curve 1 9 5 10 
surface 4 curve 10 6 11 2 
surface 5 curve 11 7 12 3 
surface 6 curve 12 8 9 4 
# region definition
region 1 boundary surface 1 2 3 4 5 6 

# definition of the second brick 
vertex 101 xyz 0.0 0.0 1.0 
vertex 102 xyz 1.0 0.0 1.0 
vertex 103 xyz 1.0 1.0 1.0 
vertex 104 xyz 0.0 1.0 1.0 
vertex 105 xyz 0.0 0.0 2.0 
vertex 106 xyz 1.0 0.0 2.0 
vertex 107 xyz 1.0 1.0 2.0 
vertex 108 xyz 0.0 1.0 2.0 
# definition of curves conecting verteces
curve 101 vertex 101 102 
curve 102 vertex 102 103 
curve 103 vertex 103 104 
curve 104 vertex 104 101 
curve 105 vertex 105 106 
curve 106 vertex 106 107 
curve 107 vertex 107 108 
curve 108 vertex 108 105 
curve 109 vertex 101 105 
curve 110 vertex 102 106 
curve 111 vertex 103 107 
curve 112 vertex 104 108 
# surface definition
surface 101 curve 104 103 102 101 mirror 2 # mirror of surface 2 normal orientation must be same as surface 2 
surface 102 curve 108 107 106 105 
surface 103 curve 101 109 105 110 
surface 104 curve 110 106 111 102 
surface 105 curve 111 107 112 103 
surface 106 curve 112 108 109 104 
# region definition 
region 101 boundary surface -101 102 103 104 105 106

