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Update reading initial boundary data from .bf instead of deprecated .bnd #79

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Update reading initial boundary data from .bf instead of deprecated .bnd #79

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39 changes: 20 additions & 19 deletions fdsreader/simulation.py
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Original file line number Diff line number Diff line change
Expand Up @@ -630,27 +630,12 @@ def _load_boundary_data(self, smv_file: TextIO, line: str, cell_centered: bool):
patches = dict()
mesh_patches = dict()

if os.path.exists(file_path + ".bnd"):
times = list()
lower_bounds = list()
upper_bounds = list()
with open(file_path + ".bnd", 'r') as bnd_file:
for line in bnd_file:
splits = line.split()
times.append(float(splits[0]))
lower_bounds.append(float(splits[1]))
upper_bounds.append(float(splits[2]))
times = np.array(times)
lower_bounds = np.array(lower_bounds, dtype=np.float32)
upper_bounds = np.array(upper_bounds, dtype=np.float32)
n_t = times.shape[0]
else:
times = None
n_t = -1
lower_bounds = np.array([0.0], dtype=np.float32)
upper_bounds = np.array([np.float32(-1e33)], dtype=np.float32)
lower_bounds = np.array([np.float32(1e32)], dtype=np.float32)
upper_bounds = np.array([np.float32(-1e33)], dtype=np.float32)

file_size_bytes = os.stat(file_path).st_size
with open(file_path, 'rb') as infile:

# Offset of the binary file to the end of the file header.
offset = 3 * fdtype.new((('c', 30),)).itemsize
infile.seek(offset)
Expand All @@ -662,6 +647,22 @@ def _load_boundary_data(self, smv_file: TextIO, line: str, cell_centered: bool):
offset += fdtype.INT.itemsize + dtype_patches.itemsize * n_patches
patch_offset = fdtype.FLOAT.itemsize

time_bytes = fdtype.FLOAT.itemsize
patch_data_bytes = 0
for patch_info in patch_infos:
patch_info = patch_info[0]
extent, dimension = self._indices_to_extent(patch_info[:6], mesh)
patch_data_bytes += fdtype.new((('f', str(dimension.shape(cell_centered=False))),)).itemsize

n_t = (file_size_bytes - offset) // (time_bytes + n_patches * patch_data_bytes)

times = []
for _ in range(n_t):
time = fdtype.read(infile, fdtype.FLOAT, 1)[0][0][0]
times.append(time)
offset += time_bytes + patch_data_bytes
infile.seek(offset)

for patch_info in patch_infos:
patch_info = patch_info[0]

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