def init_material_hy(self):
"""Set up the update mechanism for Hy field.
Set up the update mechanism for Hy field and stores the result
at self.pw_material[Hy].
"""
self.pw_material[Hy] = {}
shape = self.hy.shape
for idx in ndindex(shape):
spc = self.space.hy_index_to_space(*idx)
mat_obj, underneath = self.geom_tree.material_of_point(spc)
if idx[2] == 0 or idx[0] == 0:
mat_obj = Dummy(mat_obj.eps_inf, mat_obj.mu_inf)
pw_obj = mat_obj.get_pw_material_hy(idx, spc, underneath, self.cmplx)
if self.pw_material[Hy].has_key(type(pw_obj)):
self.pw_material[Hy][type(pw_obj)].merge(pw_obj)
else:
self.pw_material[Hy][type(pw_obj)] = pw_obj
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