::::::::
points_and_faces/faces.txt
::::::::
0 1 2 0
0 2 3 1
0 3 4 0
0 4 5 1
0 5 6 0
0 6 1 1
1 7 8 0
1 8 2 1
2 8 3 0
3 8 9 1
3 9 10 0
4 3 10 1
5 4 10 0
5 10 11 1
6 5 12 1
5 11 12 0
1 12 7 1
1 6 12 0
13 7 12 0
13 8 7 1
13 9 8 0
13 10 9 1
13 11 10 0
13 12 11 1
::::::::
points_and_faces/points.txt
::::::::
0	0	-100
100	0	-50
50	86.6	-50
-50	86.6	-50
-100	0	-50
-50	-86.6	-50
50	-86.6	-50
100	0	50
50	86.6	50
-50	86.6	50
-100	0	50
-50	-86.6	50
50	-86.6	50
0	0	100