def __init__(self, shape, extent=None, origin=None, dimensions=None,
time_dimension=None, dtype=np.float32, subdomains=None,
comm=None, topology=None):
shape = as_tuple(shape)
# Create or pull the SpaceDimensions
if dimensions is None:
ndim = len(shape)
assert ndim <= 3
dim_names = self._default_dimensions[:ndim]
dim_spacing = tuple(Scalar(name='h_%s' % n, dtype=dtype, is_const=True)
for n in dim_names)
dimensions = tuple(SpaceDimension(name=n, spacing=s)
for n, s in zip(dim_names, dim_spacing))
else:
for d in dimensions:
if not d.is_Space:
raise ValueError("Cannot create Grid with Dimension `%s` "
"since it's not a SpaceDimension" % d)
if d.is_Derived and not d.is_Conditional:
raise ValueError("Cannot create Grid with derived Dimension `%s` "
"of type `%s`" % (d, type(d)))
dimensions = dimensions
super().__init__(shape, dimensions, dtype)
# Create a Distributor, used internally to implement domain decomposition
# by all Functions defined on this Grid
self._distributor = Distributor(shape, dimensions, comm, topology)
# The physical extent
self._extent = as_tuple(extent or tuple(1. for _ in self.shape))
# Initialize SubDomains
subdomains = tuple(i for i in (Domain(), Interior(), *as_tuple(subdomains)))
for counter, i in enumerate(subdomains):
i.__subdomain_finalize__(self, counter=counter)
self._subdomains = subdomains
self._origin = as_tuple(origin or tuple(0. for _ in self.shape))
self._origin_symbols = tuple(Scalar(name='o_%s' % d.name, dtype=dtype,
is_const=True)
for d in self.dimensions)
# Sanity check
assert (self.dim == len(self.origin) == len(self.extent) == len(self.spacing))
# Store or create default symbols for time and stepping dimensions
if time_dimension is None:
spacing = Scalar(name='dt', dtype=dtype, is_const=True)
self._time_dim = TimeDimension(name='time', spacing=spacing)
self._stepping_dim = SteppingDimension(name='t', parent=self.time_dim)
elif isinstance(time_dimension, TimeDimension):
self._time_dim = time_dimension
self._stepping_dim = SteppingDimension(name='%s_s' % self.time_dim.name,
parent=self.time_dim)
else:
raise ValueError("`time_dimension` must be None or of type TimeDimension")
def __init__(self,
shape,
extent=None,
origin=None,
dimensions=None,
time_dimension=None,
dtype=np.float32,
subdomains=None,
comm=None):
self._shape = as_tuple(shape)
self._extent = as_tuple(extent or tuple(1. for _ in self.shape))
self._dtype = dtype
if dimensions is None:
# Create the spatial dimensions and constant spacing symbols
assert (self.dim <= 3)
dim_names = self._default_dimensions[:self.dim]
dim_spacing = tuple(
self._const(name='h_%s' % n, value=v, dtype=self.dtype)
for n, v in zip(dim_names, self.spacing))
self._dimensions = tuple(
SpaceDimension(name=n, spacing=s)
for n, s in zip(dim_names, dim_spacing))
else:
self._dimensions = dimensions
# Initialize SubDomains
subdomains = tuple(i for i in (Domain(), Interior(),
*as_tuple(subdomains)))
for i in subdomains:
i.__subdomain_finalize__(self.dimensions, self.shape)
self._subdomains = subdomains
origin = as_tuple(origin or tuple(0. for _ in self.shape))
self._origin = tuple(
self._const(name='o_%s' % d.name, value=v, dtype=self.dtype)
for d, v in zip(self.dimensions, origin))
# Sanity check
assert (self.dim == len(self.origin) == len(self.extent) == len(
self.spacing))
# Store or create default symbols for time and stepping dimensions
if time_dimension is None:
spacing = self._const(name='dt', dtype=self.dtype)
self._time_dim = TimeDimension(name='time', spacing=spacing)
self._stepping_dim = self._make_stepping_dim(self.time_dim,
name='t')
elif isinstance(time_dimension, TimeDimension):
self._time_dim = time_dimension
self._stepping_dim = self._make_stepping_dim(self.time_dim)
else:
raise ValueError(
"`time_dimension` must be None or of type TimeDimension")
self._distributor = Distributor(self.shape, self.dimensions, comm)
def _make_time_dim(self, spacing):
"""Create a TimeDimension for this Grid."""
return TimeDimension(name='time', spacing=spacing)