def assemble(self, *args, **kwargs):
engine = self._engine()
direction = kwargs.pop("direction", 0)
self.process_kwargs(engine, kwargs)
x = args[0]
y = args[1] if len(args)>1 else 0
z = args[2] if len(args)>2 else 0
sdim = self.fes1.GetMesh().SpaceDimension()
if direction == 0:
if sdim == 3:
d = mfem.DeltaCoefficient(x, y, z, 1)
elif sdim == 2:
d = mfem.DeltaCoefficient(x, y, 1)
elif sdim == 1:
d = mfem.DeltaCoefficient(x, 1)
else:
assert False, "unsupported dimension"
intg = mfem.DomainLFIntegrator(d)
else:
dir = mfem.Vector(direction)
if sdim == 3:
d = mfem.VectorDeltaCoefficient(dir, x, y, z, 1)
elif sdim == 2:
d = mfem.VectorDeltaCoefficient(dir, x, y, 1)
elif sdim == 1:
d = mfem.VectorDeltaCoefficient(dir,x, 1)
else:
assert False, "unsupported dimension"
if self.fes1.FEColl().Name().startswith('ND'):
intg = mfem.VectorFEDomainLFIntegrator(d)
elif self.fes1.FEColl().Name().startswith('RT'):
intg = mfem.VectorFEDomainLFIntegrator(d)
else:
intg = mfem.VectorDomainLFIntegrator(d)
lf1 = engine.new_lf(self.fes1)
lf1.AddDomainIntegrator(intg)
lf1.Assemble()
from mfem.common.chypre import LF2PyVec, PyVec2PyMat, MfemVec2PyVec
v1 = MfemVec2PyVec(engine.b2B(lf1), None)
v1 = PyVec2PyMat(v1)
if not self._transpose:
v1 = v1.transpose()
return v1
def add_delta_contribution(obj, engine, a, real = True, is_trans=False, is_conj=False):
self = obj
c = self.vt_coeff.make_value_or_expression(self)
if isinstance(c, str): c = [c]
if real:
dprint1("Add "+self.integrator+ " delta (real)" + str(self._sel_index), "c", c)
else:
dprint1("Add "+self.integrator+ " delta(imag)" + str(self._sel_index), "c", c)
cotype = self.coeff_type[0]
if self.get_root_phys().vdim > 1:
dim = self.get_root_phys().vdim
else:
el_name = self.get_root_phys().element
dim = self.get_root_phys().geom_dim
sdim = self.get_root_phys().geom_dim
integrator = getattr(mfem, self.integrator)
adder = a.AddDomainIntegrator
for pos in self.pos_value:
args = list(pos[:sdim])
if cotype == 'S':
for b in self.itg_choice():
if b[0] == self.integrator: break
if not "S*2" in b[3]:
if real:
args.append(float(np.array(c[0])[0].real))
else:
args.append(float(np.array(c[0])[0].imag))
if args[-1] != 0:
d = mfem.DeltaCoefficient(*args)
adder(integrator(d))
else: # so far this is only for an elastic integrator
if real:
args.append(float(np.array(c[0])[0].real))
else:
args.append(float(np.array(c[0])[0].imag))
d1 = mfem.DeltaCoefficient(*args)
if real:
args.append(float(np.array(c[0])[1].real))
else:
args.append(float(np.array(c[0])[1].imag))
d2 = mfem.DeltaCoefficient(*args)
adder(integrator(d1, d2))
elif cotype == 'V':
if real:
direction = np.array(c[0]).real
else:
direction = np.array(c[0]).imag
args.append(1.0)
dir = mfem.Vector(direction)
d = mfem.VectorDeltaCoefficient(dir, *args)
adder(integrator(d))
else:
assert False, "M and D are not supported for delta coefficient"
def assemble(self, *args, **kwargs):
engine = self._engine()
direction = kwargs.pop("direction", None)
weight = kwargs.pop("weight", 1.0)
weight = np.atleast_1d(weight)
do_sum = kwargs.pop("sum", False)
info1 = engine.get_fes_info(self.fes1)
sdim = info1['sdim']
vdim = info1['vdim']
if (info1['element'].startswith('ND') or
info1['element'].startswith('RT')):
vdim = sdim
if vdim > 1:
if direction is None:
direction = [0]*vdim
direction[0] = 1
direction = np.atleast_1d(direction).astype(float, copy=False)
direction = direction.reshape(-1, sdim)
self.process_kwargs(engine, kwargs)
pts = np.array(args[0], copy = False).reshape(-1, sdim)
from mfem.common.chypre import LF2PyVec, PyVec2PyMat, MfemVec2PyVec, HStackPyVec
vecs = []
for k, pt in enumerate(pts):
w = float(weight[0] if len(weight) == 1 else weight[k])
if vdim == 1:
if sdim == 3:
x, y, z = pt
d = mfem.DeltaCoefficient(x, y, z, w)
elif sdim == 2:
x, y = pt
print("DeltaCoefficient call", type(x), type(y), type(x))
d = mfem.DeltaCoefficient(x, y, w)
elif sdim == 1:
x = pt
d = mfem.DeltaCoefficient(x, w)
else:
assert False, "unsupported dimension"
intg = mfem.DomainLFIntegrator(d)
else:
dir = direction[0] if len(direction) == 1 else direction[k]
dd = mfem.Vector(dir)
if sdim == 3:
x, y, z = pt
d = mfem.VectorDeltaCoefficient(dd, x, y, z, w)
elif sdim == 2:
x, y = pt
d = mfem.VectorDeltaCoefficient(dd, x, y, w)
elif sdim == 1:
x = pt
d = mfem.VectorDeltaCoefficient(dd,x, w)
else:
assert False, "unsupported dimension"
if self.fes1.FEColl().Name().startswith('ND'):
intg = mfem.VectorFEDomainLFIntegrator(d)
elif self.fes1.FEColl().Name().startswith('RT'):
intg = mfem.VectorFEDomainLFIntegrator(d)
else:
intg = mfem.VectorDomainLFIntegrator(d)
if do_sum:
if k == 0:
lf1 = engine.new_lf(self.fes1)
lf1.AddDomainIntegrator(intg)
else:
lf1 = engine.new_lf(self.fes1)
lf1.AddDomainIntegrator(intg)
lf1.Assemble()
vecs.append(LF2PyVec(lf1))
if do_sum:
lf1.Assemble()
v1 = MfemVec2PyVec(engine.b2B(lf1), None)
v1 = PyVec2PyMat(v1)
else:
v1 = HStackPyVec(vecs)
if not self._transpose:
v1 = v1.transpose()
return v1
def add_delta_contribution(obj,
engine,
a,
real=True,
is_trans=False,
is_conj=False):
self = obj
c = self.vt_coeff.make_value_or_expression(self)[0]
if isinstance(c, str): c = [c]
if real:
dprint1(
"Add " + self.integrator + " delta (real)" + str(self._sel_index),
"c", c)
else:
dprint1(
"Add " + self.integrator + " delta (imag)" + str(self._sel_index),
"c", c)
cotype = self.coeff_type[0]
if self.get_root_phys().vdim > 1:
dim = self.get_root_phys().vdim
else:
el_name = self.get_root_phys().element
dim = self.get_root_phys().geom_dim
sdim = self.get_root_phys().geom_dim
integrator = getattr(mfem, self.integrator)
adder = a.AddDomainIntegrator
for pos in self.pos_value:
args = list(pos[:sdim])
if cotype == 'S':
for b in self.itg_choice():
if b[0] == self.integrator: break
if not "S*2" in b[3]:
if isinstance(c[0], str):
c_coeff = None
#c_coeff = SCoeff(c[0], self.get_root_phys().ind_vars,
# self._local_ns, self._global_ns,
# real = real, conj=is_conj)
value = eval(c[0], self._global_ns, self._local_ns)
dprint1("time dependent delta", value)
args.append(float(value))
else:
c_coeff = None
if real:
args.append(float(np.array(c)[0].real))
else:
args.append(float(np.array(c)[0].imag))
if args[-1] != 0:
d = mfem.DeltaCoefficient(*args)
if c_coeff is not None:
assert False, "This option needs update of PyMFEM"
d2 = mfem.ProductCoefficient(c_coeff, d)
d2._linked_c = (c_coeff, d)
adder(integrator(d2))
else:
adder(integrator(d))
else: # so far this is only for an elastic integrator
if real:
args.append(float(np.array(c)[0].real))
else:
args.append(float(np.array(c)[0].imag))
d1 = mfem.DeltaCoefficient(*args)
if real:
args.append(float(np.array(c)[1].real))
else:
args.append(float(np.array(c)[1].imag))
d2 = mfem.DeltaCoefficient(*args)
adder(integrator(d1, d2))
elif cotype == 'V':
if real:
direction = np.array(c).real
else:
direction = np.array(c).imag
args.append(1.0)
dir = mfem.Vector(direction)
d = mfem.VectorDeltaCoefficient(dir, *args)
adder(integrator(d))
else:
assert False, "M and D are not supported for delta coefficient"