input segments
0/1 0/1 2/1 2/1
2/1 0/1 0/1 2/1

the output
Polyline number 1:
    (0.5:0.5)
    (1.5:1.5)
    (2.5:2.5)

Polyline number 2:
    (2.5:0.5)
    (1.5:1.5)
    (0.5:2.5)


testing sr
Polyline number 1:
    (0.5:0.5)
    (1.5:1.5)
    (2.5:2.5)

Polyline number 2:
    (2.5:0.5)
    (1.5:1.5)
    (0.5:2.5)

