def _load_data(self):
"""Function to read in all particle data for a simulation.
"""
particles = self
pointer_location = {particle: [0] * len(self.times) for particle in particles}
for particle in particles:
if len(particle._positions) == 0 and len(particle._tags) == 0:
for t in range(len(self.times)):
size = 0
for mesh in self._file_paths.keys():
size += particle.n_particles[mesh][t]
for quantity in particle.quantities:
particle._data[quantity.quantity].append(np.empty((size,), dtype=np.float32))
particle._positions.append(np.empty((size, 3), dtype=np.float32))
particle._tags.append(np.empty((size,), dtype=int))
for mesh, file_path in self._file_paths.items():
with open(file_path, 'rb') as infile:
# Initial offset (ONE, fds version and number of particle classes)
offset = 3 * fdtype.INT.itemsize
# Number of quantities for each particle class (plus an INTEGER_ZERO)
offset += fdtype.new((('i', 2),)).itemsize * len(particles)
# 30-char long name and unit information for each quantity
offset += fdtype.new((('c', 30),)).itemsize * 2 * sum(
[len(particle.quantities) for particle in particles])
infile.seek(offset)
for t in range(len(self.times)):
# Skip time value
infile.seek(fdtype.FLOAT.itemsize, 1)
# Read data for each particle class
for particle in particles:
# Read number of particles in each class
n_particles = fdtype.read(infile, fdtype.INT, 1)[0][0][0]
offset = pointer_location[particle][t]
# Read positions
dtype_positions = fdtype.new((('f', 3 * n_particles),))
pos = fdtype.read(infile, dtype_positions, 1)[0][0]
particle._positions[t][offset: offset + n_particles] = pos.reshape((n_particles, 3),
order='F').astype(float)
# Read tags
dtype_tags = fdtype.new((('i', n_particles),))
particle._tags[t][offset: offset + n_particles] = \
fdtype.read(infile, dtype_tags, 1)[0][0]
# Read actual quantity values
if len(particle.quantities) > 0:
dtype_data = fdtype.new(
(('f', str((n_particles, len(particle.quantities)))),))
data_raw = fdtype.read(infile, dtype_data, 1)[0][0].reshape(
(n_particles, len(particle.quantities)), order='F')
for q, quantity in enumerate(particle.quantities):
particle._data[quantity.quantity][t][
offset:offset + n_particles] = data_raw[:, q].astype(float)
pointer_location[particle][t] += particle.n_particles[mesh][t]
class SubPlot3D:
"""Subplot of a pl3d output for a single mesh.
:ivar mesh: The mesh containing the data.
"""
# Offset of the binary file to the end of the file header.
_offset = fdtype.new((('i', 3), )).itemsize + fdtype.new(
(('i', 4), )).itemsize
def __init__(self, file_path: str, mesh: Mesh):
self.file_path = file_path # Path to the binary data file
self.mesh = mesh
@property
def data(self) -> np.ndarray:
"""Method to lazy load the 3D data for each quantity of a single mesh.
:returns: 4D numpy array with (x,y,z,q) as dimensions, while q represents the 5 quantities.
"""
if not hasattr(self, "_data"):
with open(self.file_path, 'rb') as infile:
dtype_data = fdtype.new(
(('f', self.mesh.dimension.size() * 5), ))
infile.seek(self._offset)
self._data = fdtype.read(infile, dtype_data, 1)[0][0].reshape(
self.mesh.dimension.shape() + (5, ), order='F')
return self._data
def clear_cache(self):
"""Remove all data from the internal cache that has been loaded so far to free memory.
"""
if hasattr(self, "_data"):
del self._data
def __init__(self,
mesh: Mesh,
iso_filepath: str,
times: List,
viso_filepath: str = ""):
self.mesh = mesh
self.file_path = iso_filepath
if viso_filepath != "":
self.v_file_path = viso_filepath
with open(self.file_path, 'rb') as infile:
nlevels = fdtype.read(infile, fdtype.INT, 3)[2][0][0]
dtype_header_levels = fdtype.new((('f', nlevels), ))
dtype_header_zeros = fdtype.combine(fdtype.INT,
fdtype.new((('i', 2), )))
self._offset = fdtype.INT.itemsize * 3 + dtype_header_levels.itemsize + \
dtype_header_zeros.itemsize
self.times = times
self.n_vertices = list()
self.n_triangles = list()
if not settings.LAZY_LOAD:
self._load_data(infile)
if self.has_color_data:
if not settings.LAZY_LOAD:
with open(self.v_file_path, 'rb') as infile:
self._load_vdata(infile)
def _load_vdata(self, infile: BinaryIO):
"""Loads all color data for all isosurfaces in a given viso file.
"""
self._colors = np.empty((self.n_t, ), dtype=object)
dtype_nverts = fdtype.new((('i', 4), ))
infile.seek(fdtype.INT.itemsize * 2)
t = fdtype.read(infile, fdtype.FLOAT, 1)
while t.size != 0:
time_index = self.times.index(t[0][0][0])
n_vertices = fdtype.read(infile, dtype_nverts, 1)[0][0][2]
if n_vertices > 0:
self._colors[time_index] = fdtype.read(
infile, fdtype.new((('f', n_vertices), )), 1)
t = fdtype.read(infile, fdtype.FLOAT, 1)
def _load_data(self, infile: BinaryIO):
"""Loads data for the subsurface which is given in an iso file.
"""
dtype_time = fdtype.new((('f', 1), ('i', 1)))
dtype_dims = fdtype.new((('i', 2), ))
self._vertices = list()
self._triangles = list()
self._surfaces = list()
infile.seek(self._offset)
time_data = fdtype.read(infile, dtype_time, 1)
while time_data.size != 0:
self.times.append(time_data[0][0][0])
dims_data = fdtype.read(infile, dtype_dims, 1)
n_vertices = dims_data[0][0][0]
n_triangles = dims_data[0][0][1]
if n_vertices > 0:
dtype_vertices = fdtype.new((('f', 3 * n_vertices), ))
dtype_triangles = fdtype.new((('i', 3 * n_triangles), ))
dtype_surfaces = fdtype.new((('i', n_triangles), ))
self._vertices.append(
fdtype.read(infile, dtype_vertices, 1)[0][0].reshape(
(n_vertices, 3)).astype(float))
self._triangles.append(
fdtype.read(infile, dtype_triangles, 1)[0][0].reshape(
(n_triangles, 3)).astype(int) - 1)
self._surfaces.append(
fdtype.read(infile, dtype_surfaces, 1)[0][0].astype(int) -
1)
self.n_vertices.append(n_vertices)
self.n_triangles.append(n_triangles)
else:
self._vertices.append(np.empty((0, 3)))
self._triangles.append(np.empty((0, 3)))
self._surfaces.append(np.empty((0, )))
self.n_vertices.append(0)
self.n_triangles.append(0)
time_data = fdtype.read(infile, dtype_time, 1)
self.n_t = len(self.times)
def data(self) -> np.ndarray:
"""Method to lazy load the 3D data for each quantity of a single mesh.
:returns: 4D numpy array with (x,y,z,q) as dimensions, while q represents the 5 quantities.
"""
if not hasattr(self, "_data"):
with open(self.file_path, 'rb') as infile:
dtype_data = fdtype.new(
(('f', self.mesh.dimension.size() * 5), ))
infile.seek(self._offset)
self._data = fdtype.read(infile, dtype_data, 1)[0][0].reshape(
self.mesh.dimension.shape() + (5, ), order='F')
return self._data
def _load_isosurface(self, smv_file: TextIO, line: str):
"""Loads the isosurface at current pointer position.
"""
double_quantity = line[0] == 'T'
mesh_index = int(line.strip().split()[1]) - 1
iso_filename = smv_file.readline().strip()
iso_id = int(iso_filename.split('_')[-1][:-4])
iso_file_path = os.path.join(self.root_path, iso_filename)
if double_quantity:
viso_file_path = os.path.join(self.root_path,
smv_file.readline().strip())
quantity = smv_file.readline().strip()
label = smv_file.readline().strip()
unit = smv_file.readline().strip()
if double_quantity:
v_quantity = smv_file.readline().strip()
v_label = smv_file.readline().strip()
v_unit = smv_file.readline().strip()
if iso_id not in self.isosurfaces:
with open(iso_file_path, 'rb') as infile:
nlevels = fdtype.read(infile, fdtype.INT, 3)[2][0][0]
dtype_header_levels = fdtype.new((('f', nlevels), ))
levels = fdtype.read(infile, dtype_header_levels, 1)[0]
if double_quantity:
if iso_id not in self.isosurfaces:
self.isosurfaces[iso_id] = Isosurface(iso_id,
double_quantity,
quantity,
label,
unit,
levels,
v_quantity=v_quantity,
v_label=v_label,
v_unit=v_unit)
self.isosurfaces[iso_id]._add_subsurface(
self.meshes[mesh_index],
iso_file_path,
viso_file_path=viso_file_path)
else:
if iso_id not in self.isosurfaces:
self.isosurfaces[iso_id] = Isosurface(iso_id, double_quantity,
quantity, label, unit,
levels)
self.isosurfaces[iso_id]._add_subsurface(self.meshes[mesh_index],
iso_file_path)
def _load_boundary_data(self, smv_file: TextIO, line: str,
cell_centered: bool):
"""Loads the boundary data at current pointer position.
"""
line = line.split()
mesh_index = int(line[1]) - 1
mesh = self.meshes[mesh_index]
filename = smv_file.readline().strip()
quantity = smv_file.readline().strip()
label = smv_file.readline().strip()
unit = smv_file.readline().strip()
bid = int(filename.split('_')[-1][:-3]) - 1
file_path = os.path.join(self.root_path, filename)
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)
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)
n_patches = fdtype.read(infile, fdtype.INT, 1)[0][0][0]
dtype_patches = fdtype.new((('i', 9), ))
patch_infos = fdtype.read(infile, dtype_patches, n_patches)
offset += fdtype.INT.itemsize + dtype_patches.itemsize * n_patches
patch_offset = fdtype.FLOAT.itemsize
for patch_info in patch_infos:
patch_info = patch_info[0]
extent, dimension = self._indices_to_extent(
patch_info[:6], mesh)
orientation = patch_info[6]
obst_index = patch_info[7]
p = Patch(file_path, dimension, extent, orientation,
cell_centered, patch_offset, offset, n_t)
# Skip obstacles with index 0, which just gives the extent of the (whole) mesh faces
# These might be needed in case of "closed" mesh faces
if obst_index != 0:
obst_index -= 1 # Account for fortran indexing
if obst_index not in patches:
patches[obst_index] = list()
patches[obst_index].append(p)
patch_offset += fdtype.new(
(('f',
str(p.dimension.shape(cell_centered=False))), )).itemsize
for obst_index, p in patches.items():
for patch in p:
patch._post_init(patch_offset)
self._subobstructions[mesh][obst_index]._add_patches(
bid, cell_centered, quantity, label, unit, p, times, n_t,
lower_bounds, upper_bounds)
