def decouple_outout_cutin_fn(outer_mesh, inner_mesh):
from forward.mesh import (check_intersecting_fn,
cut_inner_fn, decouple_outout_fn, clean_mesh_fn)
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
while(intersections):
outer_mesh = decouple_outout_fn(outer_mesh, inner_mesh)
outer_mesh = cut_inner_fn(outer_mesh, inner_mesh)
outer_mesh = clean_mesh_fn(outer_mesh)
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
return outer_mesh
def decouple_ventricles_fn(ventricles, white_matter):
from forward.mesh import (check_intersecting_fn,
cut_outer_fn, decouple_inin_fn, clean_mesh_fn)
intersections = check_intersecting_fn(white_matter, ventricles)
while(intersections):
ventricles = decouple_inin_fn(ventricles, white_matter)
ventricles = cut_outer_fn(ventricles, white_matter)
ventricles = clean_mesh_fn(ventricles)
intersections = check_intersecting_fn(white_matter, ventricles)
return ventricles
def decouple_input_from_GM_fn(mesh_file, gray_matter):
from forward.mesh import (check_intersecting_fn,
cut_outer_fn, decouple_outin_fn, clean_mesh_fn)
intersections = check_intersecting_fn(gray_matter, mesh_file)
while(intersections):
mesh_file = decouple_outin_fn(mesh_file, gray_matter)
mesh_file = cut_outer_fn(mesh_file, gray_matter)
mesh_file = clean_mesh_fn(mesh_file)
intersections = check_intersecting_fn(gray_matter, mesh_file)
return mesh_file
def iter_decoupling_fn(outer_mesh, inner_mesh):
from forward.mesh import (check_intersecting_fn,
cut_inner_fn, decouple_outout_fn, clean_mesh_fn)
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
while(intersections):
for i in range(0, 3):
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
if intersections:
outer_mesh = decouple_outout_fn(outer_mesh, inner_mesh)
else:
break
outer_mesh = cut_inner_fn(outer_mesh, inner_mesh)
outer_mesh = clean_mesh_fn(outer_mesh)
return outer_mesh
def iter_remove_throats_fn(outer_mesh, inner_mesh, iterations=5):
# This function loops until there are no
# intersections between two surfaces.
# It cuts away the inner surface and
# uses decouple_outout:
#
# "Treat 1st file as outer, 2nd file as inner component.
## "Resolve overlaps by moving outers triangles outwards."
## "Constrain the min distance between the components > d."
#
# and cut-inner:
#
## "Remove triangles of 1st that are inside of the 2nd shell."
## "Dilate 2nd by d; Fill holes and keep only 1st afterwards."
#
# at each iteration.
from forward.mesh import (check_intersecting_fn,
decouple_and_cut_inner_fn)
for i in range(0, iterations):
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
if intersections:
outer_mesh = decouple_and_cut_inner_fn(outer_mesh, inner_mesh)
else:
break
return outer_mesh
def remove_spikes_fn(outer_mesh, inner_mesh):
from forward.mesh import (check_intersecting_fn,
cut_outer_fn, decouple_inin_fn, clean_mesh_fn)
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
if intersections:
inner_mesh = cut_outer_fn(inner_mesh, outer_mesh)
inner_mesh = clean_mesh_fn(inner_mesh)
for i in xrange(0, 3):
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
if intersections:
inner_mesh = decouple_inin_fn(inner_mesh, outer_mesh)
inner_mesh = clean_mesh_fn(inner_mesh)
else:
break
return inner_mesh
def iter_push_out_fn(outer_mesh, inner_mesh, iterations=5):
# This function loops until there are no
# intersections between two surfaces.
# It cuts away the inner surface and
# uses decouple_outout:
#
# "Treat 1st file as outer, 2nd file as inner component.
## "Resolve overlaps by moving outers triangles outwards."
## "Constrain the min distance between the components > d."
#
# at each iteration.
from forward.mesh import (check_intersecting_fn,
decouple_outout_fn)
for i in range(0, iterations):
intersecting = check_intersecting_fn(outer_mesh, inner_mesh)
if intersecting:
outer_mesh = decouple_outout_fn(outer_mesh, inner_mesh)
else:
break
return outer_mesh
def decouple_surfaces_fn(outer_mesh, inner_mesh):
# This function loops until outer_mesh and inner_mesh
# have no intersections.
# At each iteration it pushes outer_mesh out, cuts parts of
# the inner_mesh away, and cleans the mesh.
# The pushing out is also iterative.
#
from forward.mesh import (
iter_push_out_fn, check_intersecting_fn,
cut_inner_fn, clean_mesh_fn)
for i in range(0, 2):
intersections = check_intersecting_fn(outer_mesh, inner_mesh)
if intersections:
outer_mesh = iter_push_out_fn(outer_mesh, inner_mesh, iterations=3)
outer_mesh = cut_inner_fn(outer_mesh, inner_mesh)
outer_mesh = clean_mesh_fn(outer_mesh)
else:
break
return outer_mesh