s Tile Mesh
f nav_test.obj
rc  45.133884 -0.533207 -3.775568  47.078232 7.797605 14.293253  0xffef 0x0
rc  52.979847 -2.778793 -2.914886  50.628868 -2.350212 13.917850  0xffef 0x0
rc  45.209217 2.024442 1.838851  46.888412 7.797606 15.772338  0xffef 0x0
rc  45.388317 -0.562073 -3.673226  46.651001 7.797606 15.513507  0xffef 0x0