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[fdtd.boundaries] use tuples for indexing

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This commit is contained in:
Jan Petykiewicz 2026-04-17 19:38:31 -07:00
commit 7eea919f94
1 changed files with 20 additions and 15 deletions
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35
meanas/fdtd/boundaries.py
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@ -28,17 +28,19 @@ def conducting_boundary(
shifted1_slice = [slice(None)] * 3
boundary_slice[direction] = 0
shifted1_slice[direction] = 1
boundary = tuple(boundary_slice)
shifted1 = tuple(shifted1_slice)
def en(e: fdfield_t) -> fdfield_t:
e[direction][boundary_slice] = 0
e[u][boundary_slice] = e[u][shifted1_slice]
e[v][boundary_slice] = e[v][shifted1_slice]
e[direction][boundary] = 0
e[u][boundary] = e[u][shifted1]
e[v][boundary] = e[v][shifted1]
return e
def hn(h: fdfield_t) -> fdfield_t:
h[direction][boundary_slice] = h[direction][shifted1_slice]
h[u][boundary_slice] = 0
h[v][boundary_slice] = 0
h[direction][boundary] = h[direction][shifted1]
h[u][boundary] = 0
h[v][boundary] = 0
return h
return en, hn
@ -50,20 +52,23 @@ def conducting_boundary(
boundary_slice[direction] = -1
shifted1_slice[direction] = -2
shifted2_slice[direction] = -3
boundary = tuple(boundary_slice)
shifted1 = tuple(shifted1_slice)
shifted2 = tuple(shifted2_slice)
def ep(e: fdfield_t) -> fdfield_t:
e[direction][boundary_slice] = -e[direction][shifted2_slice]
e[direction][shifted1_slice] = 0
e[u][boundary_slice] = e[u][shifted1_slice]
e[v][boundary_slice] = e[v][shifted1_slice]
e[direction][boundary] = -e[direction][shifted2]
e[direction][shifted1] = 0
e[u][boundary] = e[u][shifted1]
e[v][boundary] = e[v][shifted1]
return e
def hp(h: fdfield_t) -> fdfield_t:
h[direction][boundary_slice] = h[direction][shifted1_slice]
h[u][boundary_slice] = -h[u][shifted2_slice]
h[u][shifted1_slice] = 0
h[v][boundary_slice] = -h[v][shifted2_slice]
h[v][shifted1_slice] = 0
h[direction][boundary] = h[direction][shifted1]
h[u][boundary] = -h[u][shifted2]
h[u][shifted1] = 0
h[v][boundary] = -h[v][shifted2]
h[v][shifted1] = 0
return h
return ep, hp