number of obstructions: 4
Obstruction (obstr_1) #: 1 [n/a]
 vertex:1 -3.750000 0.000000 2.047000
 vertex:2 -3.750000 0.750000 2.047000
 vertex:3 -7.750000 0.750000 2.047000
 vertex:4 -7.750000 -0.000000 2.047000
Obstruction (obstr_2) #: 2 [n/a]
 vertex:1 -10.746000 4.750000 2.397000
 vertex:2 -10.746000 8.750000 2.397000
 vertex:3 -11.746000 8.750000 2.397000
 vertex:4 -11.746000 4.750000 2.397000
Obstruction (obstr_3) #: 3 [n/a]
 vertex:1 -5.246000 10.496000 2.630000
 vertex:2 -5.246000 10.996000 2.630000
 vertex:3 -5.746000 10.996000 2.630000
 vertex:4 -5.746000 10.496000 2.630000
Obstruction (obstr_4) #: 4 [n/a]
 vertex:1 -0.000000 4.062000 2.597000
 vertex:2 -0.000000 5.262000 2.597000
 vertex:3 -1.000000 5.262000 2.597000
 vertex:4 -1.000000 4.062000 2.597000
