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BUG: correct vtk reader when 2D vtk_slice in spherical geometry #265

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BUG: correct vtk reader when 2D vtk_slice in spherical geometry #265

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ec0cec7
BUG: correct vtk reader when 2D vtk_slice in spherical geometry
volodia99 Sep 25, 2024
2e30052
BUG: small correction in vtk reader
volodia99 Sep 25, 2024
bd11e8b
vtk io add new vtk format
volodia99 Oct 11, 2024
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30 changes: 22 additions & 8 deletions pytools/vtk_io.py
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Original file line number Diff line number Diff line change
Expand Up @@ -68,6 +68,7 @@ def _load_header(self, fh, geometry=None):
elif line.startswith("FIELD"):
# Idefix >= 0.8
nfield = int(line.split()[2])
self.idefix_vtk_format = 0
for _ in range(nfield):
d = fh.readline().decode("utf-8")
if d.startswith("GEOMETRY"):
Expand All @@ -88,6 +89,8 @@ def _load_header(self, fh, geometry=None):
self.t = np.fromfile(fh, dt, 1)
elif d.startswith("PERIODICITY"):
self.periodicity = np.fromfile(fh, dtype=dint, count=3).astype(bool)
elif d.startswith("IDEFIX_VTK_FORMAT"):
self.idefix_vtk_format = np.fromfile(fh, dtype=dint, count=1).item()
else:
warnings.warn("Found unknown field %s" % d)
fh.readline() # skip extra linefeed (empty line)
Expand Down Expand Up @@ -243,14 +246,25 @@ def _load_hydro(self, fh):
# Reconstruct the spherical coordinate system
if self.geometry == "spherical":
if is2d:
r = np.sqrt(xcart[:, 0, 0] ** 2 + ycart[:, 0, 0] ** 2)
phi = np.unwrap(
np.arctan2(zcart[0, self.ny // 2, :], xcart[0, self.ny // 2, :])
)
theta = np.arccos(
ycart[0, :, 0]
/ np.sqrt(xcart[0, :, 0] ** 2 + ycart[0, :, 0] ** 2)
)
if self.idefix_vtk_format>=1:
r = np.sqrt(xcart[:, 0, 0] ** 2 + zcart[:, 0, 0] ** 2)
phi = np.unwrap(
np.arctan2(ycart[0, self.ny // 2, :], xcart[0, self.ny // 2, :])
)
theta = np.arccos(
zcart[0, :, 0]
/ np.sqrt(xcart[0, :, 0] ** 2 + zcart[0, :, 0] ** 2)
)
else:
r = np.sqrt(xcart[:, 0, 0] ** 2 + ycart[:, 0, 0] ** 2)
phi = np.unwrap(
np.arctan2(zcart[0, self.ny // 2, :], xcart[0, self.ny // 2, :])
)
theta = np.arccos(
ycart[0, :, 0]
/ np.sqrt(xcart[0, :, 0] ** 2 + ycart[0, :, 0] ** 2)
)

else:
r = np.sqrt(
xcart[:, 0, 0] ** 2 + ycart[:, 0, 0] ** 2 + zcart[:, 0, 0] ** 2
Expand Down