import dolfin

import dolfin_navier_scipy.problem_setups as dnsps

N = 10

mesh = dolfin.UnitSquareMesh(N, N)

edgepoint = dolfin.Point(1., 1.)

aaa = mesh.bounding_box_tree().compute_first_entity_collision(edgepoint)

femp, stokesmatsc, rhsd_vfrc, rhsd_stbc \

= dnsps.get_sysmats(problem='cylinderwake', N=4, Re=2, scheme='CR')

mesh = femp['mesh']

edgepoint = dolfin.Point(2.5, .2)

aaac = mesh.bounding_box_tree().compute_first_entity_collision(edgepoint)

print 'Cell id at boundary: ', aaac

dolfin.plot(mesh)

dolfin.interactive(True)