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// Copyright (C) 2020 Jørgen S. Dokken
//
// This file is part of DOLFINX-MPC
//
// SPDX-License-Identifier: MIT
#include <array>
#include <caster_petsc.h>
#include <dolfinx/common/IndexMap.h>
#include <dolfinx/fem/DirichletBC.h>
#include <dolfinx/fem/Form.h>
#include <dolfinx/fem/FunctionSpace.h>
#include <dolfinx/geometry/BoundingBoxTree.h>
#include <dolfinx/geometry/utils.h>
#include <dolfinx/la/petsc.h>
#include <dolfinx/mesh/MeshTags.h>
#include <dolfinx_mpc/ContactConstraint.h>
#include <dolfinx_mpc/MultiPointConstraint.h>
#include <dolfinx_mpc/PeriodicConstraint.h>
#include <dolfinx_mpc/SlipConstraint.h>
#include <dolfinx_mpc/assemble_matrix.h>
#include <dolfinx_mpc/assemble_vector.h>
#include <dolfinx_mpc/lifting.h>
#include <dolfinx_mpc/utils.h>
#include <memory>
#include <nanobind/nanobind.h>
#include <nanobind/ndarray.h>
#include <nanobind/stl/complex.h>
#include <nanobind/stl/function.h>
#include <nanobind/stl/map.h>
#include <nanobind/stl/pair.h>
#include <nanobind/stl/shared_ptr.h>
#include <nanobind/stl/string.h>
#include <nanobind/stl/tuple.h>
#include <nanobind/stl/vector.h>
#include <petsc4py/petsc4py.h>
#include <petscmat.h>
#include <petscvec.h>
namespace nb = nanobind;
using namespace nb::literals;
namespace
{
// Templating over mesh resolution
template <typename T, std::floating_point U>
void declare_mpc(nb::module_& m, std::string type)
{
std::string nbclass_name = "MultiPointConstraint_" + type;
// dolfinx_mpc::MultiPointConstraint
nb::class_<dolfinx_mpc::MultiPointConstraint<T, U>>(
m, nbclass_name.c_str(),
"Object for representing contact (non-penetrating) conditions")
.def("__init__",
[](dolfinx_mpc::MultiPointConstraint<T, U>* mpc,
std::shared_ptr<const dolfinx::fem::FunctionSpace<U>> V,
nb::ndarray<nb::numpy, std::int32_t, nb::ndim<1>>& slaves,
nb::ndarray<nb::numpy, std::int64_t, nb::ndim<1>>& masters,
nb::ndarray<nb::numpy, T, nb::ndim<1>>& coeffs,
nb::ndarray<nb::numpy, std::int32_t, nb::ndim<1>>& owners,
nb::ndarray<nb::numpy, std::int32_t, nb::ndim<1>>& offsets)
{
new (mpc) dolfinx_mpc::MultiPointConstraint(
V, std::span<const std::int32_t>(slaves.data(), slaves.size()),
std::span<const std::int64_t>(masters.data(), masters.size()),
std::span<const T>(coeffs.data(), coeffs.size()),
std::span<const std::int32_t>(owners.data(), owners.size()),
std::span<const std::int32_t>(offsets.data(), offsets.size()));
})
.def_prop_ro("masters", &dolfinx_mpc::MultiPointConstraint<T, U>::masters)
.def("coefficients",
[](dolfinx_mpc::MultiPointConstraint<T, U>& self)
{
std::shared_ptr<const dolfinx::graph::AdjacencyList<T>> adj
= self.coefficients();
const std::vector<std::int32_t>& offsets = adj->offsets();
const std::vector<T>& data = adj->array();
return std::make_pair(
nb::ndarray<nb::numpy, const T, nb::ndim<1>>(
data.data(), {data.size()}, nb::handle()),
nb::ndarray<nb::numpy, const std::int32_t, nb::ndim<1>>(
offsets.data(), {offsets.size()}, nb::handle()));
})
.def_prop_ro("constants",
[](dolfinx_mpc::MultiPointConstraint<T, U>& self)
{
const std::vector<T>& consts = self.constant_values();
return nb::ndarray<nb::numpy, const T, nb::ndim<1>>(
consts.data(), {consts.size()}, nb::handle());
})
.def_prop_ro("owners", &dolfinx_mpc::MultiPointConstraint<T, U>::owners)
.def_prop_ro(
"slaves",
[](dolfinx_mpc::MultiPointConstraint<T, U>& self)
{
const std::vector<std::int32_t>& slaves = self.slaves();
return nb::ndarray<nb::numpy, const std::int32_t, nb::ndim<1>>(
slaves.data(), {slaves.size()}, nb::handle());
})
.def_prop_ro(
"is_slave",
[](dolfinx_mpc::MultiPointConstraint<T, U>& self)
{
std::span<const std::int8_t> slaves = self.is_slave();
return nb::ndarray<nb::numpy, const std::int8_t, nb::ndim<1>>(
slaves.data(), {slaves.size()}, nb::handle());
})
.def_prop_ro("cell_to_slaves",
&dolfinx_mpc::MultiPointConstraint<T, U>::cell_to_slaves)
.def_prop_ro("num_local_slaves",
&dolfinx_mpc::MultiPointConstraint<T, U>::num_local_slaves)
.def_prop_ro("function_space",
&dolfinx_mpc::MultiPointConstraint<T, U>::function_space)
.def_prop_ro("owners", &dolfinx_mpc::MultiPointConstraint<T, U>::owners)
.def(
"backsubstitution",
[](dolfinx_mpc::MultiPointConstraint<T, U>& self,
nb::ndarray<T, nb::ndim<1>, nb::c_contig> u)
{ self.backsubstitution(std::span<T>(u.data(), u.size())); },
"u"_a, "Backsubstitute slave values into vector")
.def(
"homogenize",
[](dolfinx_mpc::MultiPointConstraint<T, U>& self,
nb::ndarray<T, nb::ndim<1>, nb::c_contig> u)
{ self.homogenize(std::span<T>(u.data(), u.size())); },
"u"_a, "Homogenize (set to zero) values at slave DoF indices");
// .def("ghost_masters", &dolfinx_mpc::mpc_data::ghost_masters);
}
template <typename T, std::floating_point U>
void declare_functions(nb::module_& m)
{
m.def("compute_shared_indices", &dolfinx_mpc::compute_shared_indices<U>);
m.def("create_sparsity_pattern", &dolfinx_mpc::create_sparsity_pattern<T, U>);
m.def("create_contact_slip_condition",
&dolfinx_mpc::create_contact_slip_condition<T, U>);
m.def("create_slip_condition", &dolfinx_mpc::create_slip_condition<T, U>);
m.def("create_contact_inelastic_condition",
&dolfinx_mpc::create_contact_inelastic_condition<T, U>);
m.def(
"create_periodic_constraint_geometrical",
[](std::shared_ptr<const dolfinx::fem::FunctionSpace<U>> V,
const std::function<nb::ndarray<bool, nb::ndim<1>, nb::c_contig>(
nb::ndarray<const U, nb::ndim<2>, nb::numpy>&)>& indicator,
const std::function<nb::ndarray<U, nb::ndim<2>, nb::numpy>(
nb::ndarray<const U, nb::ndim<2>, nb::numpy>&)>& relation,
const std::vector<std::shared_ptr<const dolfinx::fem::DirichletBC<T>>>&
bcs,
T scale, bool collapse)
{
auto _indicator
= [&indicator](MDSPAN_IMPL_STANDARD_NAMESPACE::mdspan<
const U,
MDSPAN_IMPL_STANDARD_NAMESPACE::extents<
std::size_t, 3,
MDSPAN_IMPL_STANDARD_NAMESPACE::dynamic_extent>>
x) -> std::vector<std::int8_t>
{
assert(x.size() % 3 == 0);
nb::ndarray<const U, nb::ndim<2>, nb::numpy> x_view(
x.data_handle(), {3, x.size() / 3}, nb::handle());
auto m = indicator(x_view);
std::vector<std::int8_t> s(m.data(), m.data() + m.size());
return s;
};
auto _relation = [&relation](std::span<const U> x) -> std::vector<U>
{
assert(x.size() % 3 == 0);
nb::ndarray<const U, nb::ndim<2>, nb::numpy> x_view(
x.data(), {3, x.size() / 3}, nb::handle());
auto v = relation(x_view);
std::vector<U> output(v.data(), v.data() + v.size());
return output;
};
return dolfinx_mpc::create_periodic_condition_geometrical(
V, _indicator, _relation, bcs, scale, collapse);
},
"V"_a, "indicator"_a, "relation"_a, "bcs"_a, nb::arg("scale").noconvert(),
nb::arg("collapse").noconvert());
m.def(
"create_periodic_constraint_topological",
[](std::shared_ptr<const dolfinx::fem::FunctionSpace<U>>& V,
std::shared_ptr<const dolfinx::mesh::MeshTags<std::int32_t>>& meshtags,
const int dim,
const std::function<nb::ndarray<U, nb::ndim<2>, nb::numpy>(
nb::ndarray<const U, nb::ndim<2>, nb::numpy>&)>& relation,
const std::vector<std::shared_ptr<const dolfinx::fem::DirichletBC<T>>>&
bcs,
T scale, bool collapse)
{
auto _relation = [&relation](std::span<const U> x) -> std::vector<U>
{
nb::ndarray<const U, nb::ndim<2>, nb::numpy> x_view(
x.data(), {3, x.size() / 3}, nb::handle());
auto v = relation(x_view);
std::vector<U> output(v.data(), v.data() + v.size());
return output;
};
return dolfinx_mpc::create_periodic_condition_topological(
V, meshtags, dim, _relation, bcs, scale, collapse);
},
"V"_a, "meshtags"_a, "dim"_a, "relation"_a, "bcs"_a,
nb::arg("scale").noconvert(), nb::arg("collapse").noconvert());
}
template <typename T, std::floating_point U>
void declare_mpc_data(nb::module_& m, std::string type)
{
std::string nbclass_name = "mpc_data_" + type;
nb::class_<dolfinx_mpc::mpc_data<T>>(m, nbclass_name.c_str(),
"Object with data arrays for mpc")
.def_prop_ro(
"slaves",
[](dolfinx_mpc::mpc_data<T>& self)
{
const std::vector<std::int32_t>& slaves = self.slaves;
return nb::ndarray<nb::numpy, const std::int32_t, nb::ndim<1>>(
slaves.data(), {slaves.size()}, nb::handle());
})
.def_prop_ro(
"masters",
[](dolfinx_mpc::mpc_data<T>& self)
{
const std::vector<std::int64_t>& masters = self.masters;
return nb::ndarray<nb::numpy, const std::int64_t, nb::ndim<1>>(
masters.data(), {masters.size()}, nb::handle());
})
.def_prop_ro("coeffs",
[](dolfinx_mpc::mpc_data<T>& self)
{
const std::vector<T>& coeffs = self.coeffs;
return nb::ndarray<nb::numpy, const T, nb::ndim<1>>(
coeffs.data(), {coeffs.size()}, nb::handle());
})
.def_prop_ro(
"owners",
[](dolfinx_mpc::mpc_data<T>& self)
{
const std::vector<std::int32_t>& owners = self.owners;
return nb::ndarray<nb::numpy, const std::int32_t, nb::ndim<1>>(
owners.data(), {owners.size()}, nb::handle());
})
.def_prop_ro(
"offsets",
[](dolfinx_mpc::mpc_data<T>& self)
{
const std::vector<std::int32_t>& offsets = self.offsets;
return nb::ndarray<nb::numpy, const std::int32_t, nb::ndim<1>>(
offsets.data(), {offsets.size()}, nb::handle());
});
}
template <typename T = PetscScalar, std::floating_point U>
void declare_petsc_functions(nb::module_& m)
{
import_petsc4py();
m.def("create_normal_approximation",
[](std::shared_ptr<dolfinx::fem::FunctionSpace<U>> V, std::int32_t dim,
const nb::ndarray<std::int32_t, nb::ndim<1>, nb::c_contig>& entities)
{
return dolfinx_mpc::create_normal_approximation(
V, dim,
std::span<const std::int32_t>(entities.data(), entities.size()));
});
m.def(
"assemble_matrix",
[](Mat A, const dolfinx::fem::Form<T>& a,
const std::shared_ptr<const dolfinx_mpc::MultiPointConstraint<T, U>>&
mpc0,
const std::shared_ptr<const dolfinx_mpc::MultiPointConstraint<T, U>>&
mpc1,
const std::vector<std::shared_ptr<const dolfinx::fem::DirichletBC<T>>>&
bcs,
const T diagval)
{
dolfinx_mpc::assemble_matrix(
dolfinx::la::petsc::Matrix::set_block_fn(A, ADD_VALUES),
dolfinx::la::petsc::Matrix::set_fn(A, ADD_VALUES), a, mpc0, mpc1,
bcs, diagval);
});
m.def(
"assemble_vector",
[](nb::ndarray<T, nb::ndim<1>, nb::c_contig> b,
const dolfinx::fem::Form<T>& L,
const std::shared_ptr<const dolfinx_mpc::MultiPointConstraint<T, U>>&
mpc)
{ dolfinx_mpc::assemble_vector(std::span(b.data(), b.size()), L, mpc); },
"b"_a, "L"_a, "mpc"_a, "Assemble linear form into an existing vector");
m.def(
"apply_lifting",
[](nb::ndarray<T, nb::ndim<1>, nb::c_contig> b,
std::vector<std::shared_ptr<const dolfinx::fem::Form<T>>>& a,
const std::vector<std::vector<
std::shared_ptr<const dolfinx::fem::DirichletBC<T, U>>>>& bcs1,
const std::vector<nb::ndarray<const T, nb::ndim<1>, nb::c_contig>>& x0,
T scale,
std::shared_ptr<const dolfinx_mpc::MultiPointConstraint<T, U>>& mpc)
{
std::vector<std::span<const T>> _x0;
for (const auto& x : x0)
_x0.emplace_back(x.data(), x.size());
dolfinx_mpc::apply_lifting(std::span(b.data(), b.size()), a, bcs1, _x0,
scale, mpc);
},
nb::arg("b"), nb::arg("a"), nb::arg("bcs"), nb::arg("x0"),
nb::arg("scale"), nb::arg("mpc"),
"Assemble apply lifting from form a on vector b");
m.def(
"create_matrix",
[](const dolfinx::fem::Form<T>& a,
const std::shared_ptr<dolfinx_mpc::MultiPointConstraint<T, U>>& mpc)
{
auto A = dolfinx_mpc::create_matrix(a, mpc);
Mat _A = A.mat();
PetscObjectReference((PetscObject)_A);
return _A;
},
nb::rv_policy::take_ownership, "Create a PETSc Mat for bilinear form.");
m.def(
"create_matrix",
[](const dolfinx::fem::Form<T>& a,
const std::shared_ptr<dolfinx_mpc::MultiPointConstraint<T, U>>& mpc0,
const std::shared_ptr<dolfinx_mpc::MultiPointConstraint<T, U>>& mpc1)
{
auto A = dolfinx_mpc::create_matrix(a, mpc0, mpc1);
Mat _A = A.mat();
PetscObjectReference((PetscObject)_A);
return _A;
},
nb::rv_policy::take_ownership, "Create a PETSc Mat for bilinear form.");
}
} // namespace
namespace dolfinx_mpc_wrappers
{
void mpc(nb::module_& m)
{
declare_mpc<float, float>(m, "float");
declare_mpc<std::complex<float>, float>(m, "complex_float");
declare_mpc<double, double>(m, "double");
declare_mpc<std::complex<double>, double>(m, "complex_double");
declare_functions<float, float>(m);
declare_functions<std::complex<float>, float>(m);
declare_functions<double, double>(m);
declare_functions<std::complex<double>, double>(m);
declare_mpc_data<float, float>(m, "float");
declare_mpc_data<std::complex<float>, float>(m, "complex_float");
declare_mpc_data<double, double>(m, "double");
declare_mpc_data<std::complex<double>, double>(m, "complex_double");
declare_petsc_functions<PetscScalar, PetscReal>(m);
}
} // namespace dolfinx_mpc_wrappers
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