ply
format ascii 1.0
element vertex 21           { define "vertex" element, 8 of them in file }
property float x           { vertex contains float "x" coordinate }
property float y           { y coordinate is also a vertex property }
property float z           { z coordinate, too }
property float nx
property float ny
property float nz
element edge 24            { there are 6 "face" elements in the file }
property int vertex1
property int vertex2
property list uchar float beam_dimensions
property list uchar float beam_material {poissons ratio , young's modulus in GPascal}
end_header

0 0 0 0 0 1
1 0 0 0 0 1
2 0 0 0 0 1
3 0 0 0 0 1
4 0 0 0 0 1
0 1 0 0 0 1
2 1 0 0 0 1
4 1 0 0 0 1
0 2 0 0 0 1
1 2 0 0 0 1
2 2 0 0 0 1
3 2 0 0 0 1
4 2 0 0 0 1
0 3 0 0 0 1
2 3 0 0 0 1
4 3 0 0 0 1
0 4 0 0 0 1
1 4 0 0 0 1
2 4 0 0 0 1
3 4 0 0 0 1
4 4 0 0 0 1

0 1 2 0.03 0.026 2 0.3 200
1 2 2 0.03 0.026 2 0.3 200
2 3 2 0.03 0.026 2 0.3 200
3 4 2 0.03 0.026 2 0.3 200

0 5 2 0.03 0.026 2 0.3 200
2 6 2 0.03 0.026 2 0.3 200
4 7 2 0.03 0.026 2 0.3 200


8 9 2 0.03 0.026 2 0.3 200
9 10 2 0.03 0.026 2 0.3 200
10 11 2 0.03 0.026 2 0.3 200
11 12 2 0.03 0.026 2 0.3 200

8 5 2 0.03 0.026 2 0.3 200
10 6 2 0.03 0.026 2 0.3 200
12 7 2 0.03 0.026 2 0.3 200

8 13 2 0.03 0.026 2 0.3 200
10 14 2 0.03 0.026 2 0.3 200
12 15 2 0.03 0.026 2 0.3 200

16 13 2 0.03 0.026 2 0.3 200
18 14 2 0.03 0.026 2 0.3 200
20 15 2 0.03 0.026 2 0.3 200

16 17 2 0.03 0.026 2 0.3 200
17 18 2 0.03 0.026 2 0.3 200
18 19 2 0.03 0.026 2 0.3 200
19 20 2 0.03 0.026 2 0.3 200