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use fdmath derivatives where possible

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This commit is contained in:
Jan Petykiewicz 2019-11-25 00:04:53 -08:00
parent e69b0f61ec
commit e5db39fd49
1 changed files with 3 additions and 6 deletions
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9
meanas/fdtd/energy.py
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@ -2,8 +2,7 @@
from typing import List, Callable, Tuple, Dict
import numpy
from .. import dx_lists_t, field_t, field_updater
from .. import dx_lists_t, field_t, field_updater, fdmath
def poynting(e: field_t,
h: field_t,
@ -35,10 +34,8 @@ def poynting_divergence(s: field_t = None,
if s is None:
s = poynting(e, h, dxes=dxes)
#TODO use deriv operators
ds = ((s[0] - numpy.roll(s[0], 1, axis=0)) +
(s[1] - numpy.roll(s[1], 1, axis=1)) +
(s[2] - numpy.roll(s[2], 1, axis=2)))
Dx, Dy, Dz = fdmath.functional.deriv_back()
ds = Dx(s[0]) + Dy(s[1]) + Dz(s[2])
return ds