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// Copyright (C) 2017 Chris N. Richardson and Garth N. Wells
//
// This file is part of DOLFINx (https://www.fenicsproject.org)
//
// SPDX-License-Identifier: LGPL-3.0-or-later
#include "array.h"
#include "caster_mpi.h"
#include <dolfinx/common/utils.h>
#include <dolfinx/geometry/BoundingBoxTree.h>
#include <dolfinx/geometry/gjk.h>
#include <dolfinx/geometry/utils.h>
#include <dolfinx/mesh/Mesh.h>
#include <memory>
#include <nanobind/nanobind.h>
#include <nanobind/ndarray.h>
#include <nanobind/stl/array.h>
#include <nanobind/stl/tuple.h>
#include <nanobind/stl/vector.h>
#include <span>
namespace nb = nanobind;
namespace
{
template <typename T>
void declare_bbtree(nb::module_& m, std::string type)
{
// dolfinx::geometry::BoundingBoxTree
std::string pyclass_name = "BoundingBoxTree_" + type;
nb::class_<dolfinx::geometry::BoundingBoxTree<T>>(m, pyclass_name.c_str())
.def(
"__init__",
[](dolfinx::geometry::BoundingBoxTree<T>* bbt,
const dolfinx::mesh::Mesh<T>& mesh, int dim,
nb::ndarray<const std::int32_t, nb::ndim<1>, nb::c_contig>
entities,
double padding)
{
new (bbt) dolfinx::geometry::BoundingBoxTree<T>(
mesh, dim,
std::span<const std::int32_t>(entities.data(), entities.size()),
padding);
},
nb::arg("mesh"), nb::arg("dim"), nb::arg("entities"),
nb::arg("padding") = 0.0)
.def_prop_ro("num_bboxes",
&dolfinx::geometry::BoundingBoxTree<T>::num_bboxes)
.def(
"get_bbox",
[](const dolfinx::geometry::BoundingBoxTree<T>& self,
const std::size_t i)
{
std::array<T, 6> bbox = self.get_bbox(i);
return dolfinx_wrappers::as_nbarray_copy(bbox, {2, 3});
},
nb::arg("i"))
.def("__repr__", &dolfinx::geometry::BoundingBoxTree<T>::str)
.def(
"create_global_tree",
[](const dolfinx::geometry::BoundingBoxTree<T>& self,
const dolfinx_wrappers::MPICommWrapper comm)
{ return self.create_global_tree(comm.get()); },
nb::arg("comm"));
m.def(
"compute_collisions_points",
[](const dolfinx::geometry::BoundingBoxTree<T>& tree,
nb::ndarray<const T, nb::shape<3>, nb::c_contig> points)
{
return dolfinx::geometry::compute_collisions<T>(
tree, std::span(points.data(), 3));
},
nb::arg("tree"), nb::arg("points"));
m.def(
"compute_collisions_points",
[](const dolfinx::geometry::BoundingBoxTree<T>& tree,
nb::ndarray<const T, nb::shape<-1, 3>, nb::c_contig> points)
{
return dolfinx::geometry::compute_collisions<T>(
tree, std::span(points.data(), points.size()));
},
nb::arg("tree"), nb::arg("points"));
m.def(
"compute_collisions_trees",
[](const dolfinx::geometry::BoundingBoxTree<T>& treeA,
const dolfinx::geometry::BoundingBoxTree<T>& treeB)
{
std::vector coll
= dolfinx::geometry::compute_collisions<T>(treeA, treeB);
return dolfinx_wrappers::as_nbarray(std::move(coll),
{coll.size() / 2, 2});
},
nb::arg("tree0"), nb::arg("tree1"));
m.def(
"compute_closest_entity",
[](const dolfinx::geometry::BoundingBoxTree<T>& tree,
const dolfinx::geometry::BoundingBoxTree<T>& midpoint_tree,
const dolfinx::mesh::Mesh<T>& mesh,
nb::ndarray<const T, nb::shape<3>, nb::c_contig> points)
{
return dolfinx_wrappers::as_nbarray(
dolfinx::geometry::compute_closest_entity<T>(
tree, midpoint_tree, mesh,
std::span(points.data(), points.size())));
},
nb::arg("tree"), nb::arg("midpoint_tree"), nb::arg("mesh"),
nb::arg("points"));
m.def(
"compute_closest_entity",
[](const dolfinx::geometry::BoundingBoxTree<T>& tree,
const dolfinx::geometry::BoundingBoxTree<T>& midpoint_tree,
const dolfinx::mesh::Mesh<T>& mesh,
nb::ndarray<const T, nb::shape<-1, 3>, nb::c_contig> points)
{
return dolfinx_wrappers::as_nbarray(
dolfinx::geometry::compute_closest_entity<T>(
tree, midpoint_tree, mesh,
std::span(points.data(), points.size())));
},
nb::arg("tree"), nb::arg("midpoint_tree"), nb::arg("mesh"),
nb::arg("points"));
m.def(
"create_midpoint_tree",
[](const dolfinx::mesh::Mesh<T>& mesh, int tdim,
nb::ndarray<const std::int32_t, nb::ndim<1>, nb::c_contig> entities)
{
return dolfinx::geometry::create_midpoint_tree(
mesh, tdim,
std::span<const std::int32_t>(entities.data(), entities.size()));
},
nb::arg("mesh"), nb::arg("tdim"), nb::arg("entities"));
m.def(
"compute_colliding_cells",
[](const dolfinx::mesh::Mesh<T>& mesh,
const dolfinx::graph::AdjacencyList<int>& candidate_cells,
nb::ndarray<const T, nb::shape<3>, nb::c_contig> points)
{
return dolfinx::geometry::compute_colliding_cells<T>(
mesh, candidate_cells, std::span(points.data(), points.size()));
},
nb::arg("mesh"), nb::arg("candidate_cells"), nb::arg("points"));
m.def(
"compute_colliding_cells",
[](const dolfinx::mesh::Mesh<T>& mesh,
const dolfinx::graph::AdjacencyList<int>& candidate_cells,
nb::ndarray<const T, nb::shape<-1, 3>, nb::c_contig> points)
{
return dolfinx::geometry::compute_colliding_cells<T>(
mesh, candidate_cells, std::span(points.data(), points.size()));
},
nb::arg("mesh"), nb::arg("candidate_cells"), nb::arg("points"));
std::string gjk_name = "compute_distance_gjk_" + type;
m.def(
gjk_name.c_str(),
[](nb::ndarray<const T, nb::c_contig> p,
nb::ndarray<const T, nb::c_contig> q)
{
std::size_t p_s0 = p.ndim() == 1 ? 1 : p.shape(0);
std::size_t q_s0 = q.ndim() == 1 ? 1 : q.shape(0);
std::span<const T> _p(p.data(), 3 * p_s0), _q(q.data(), 3 * q_s0);
// Use double when T==float, and double_extended when T==double
using U = std::conditional<
std::is_same_v<T, float>, double,
boost::multiprecision::cpp_bin_float_double_extended>::type;
std::array<T, 3> d
= dolfinx::geometry::compute_distance_gjk<T, U>(_p, _q);
return dolfinx_wrappers::as_nbarray_copy(d, {d.size()});
},
nb::arg("p"), nb::arg("q"));
m.def(
"squared_distance",
[](const dolfinx::mesh::Mesh<T>& mesh, int dim,
nb::ndarray<const std::int32_t, nb::ndim<1>, nb::c_contig> indices,
nb::ndarray<const T, nb::c_contig> points)
{
const std::size_t p_s0 = points.ndim() == 1 ? 1 : points.shape(0);
std::span<const T> _p(points.data(), 3 * p_s0);
return dolfinx_wrappers::as_nbarray(
dolfinx::geometry::squared_distance<T>(
mesh, dim, std::span(indices.data(), indices.size()), _p));
},
nb::arg("mesh"), nb::arg("dim"), nb::arg("indices"), nb::arg("points"));
m.def("determine_point_ownership",
[](const dolfinx::mesh::Mesh<T>& mesh,
nb::ndarray<const T, nb::c_contig> points, const T padding)
{
const std::size_t p_s0 = points.ndim() == 1 ? 1 : points.shape(0);
std::span<const T> _p(points.data(), 3 * p_s0);
return dolfinx::geometry::determine_point_ownership<T>(mesh, _p,
padding);
});
std::string pod_pyclass_name = "PointOwnershipData_" + type;
nb::class_<dolfinx::geometry::PointOwnershipData<T>>(m,
pod_pyclass_name.c_str())
.def(
"__init__",
[](dolfinx::geometry::PointOwnershipData<T>* self,
nb::ndarray<const std::int32_t, nb::ndim<1>, nb::c_contig>
src_owner,
nb::ndarray<const std::int32_t, nb::ndim<1>, nb::c_contig>
dest_owners,
nb::ndarray<const T, nb::ndim<1>, nb::c_contig> dest_points,
nb::ndarray<const std::int32_t, nb::ndim<1>, nb::c_contig>
dest_cells)
{
new (self) dolfinx::geometry::PointOwnershipData<T>{
.src_owner = std::vector(src_owner.data(),
src_owner.data() + src_owner.size()),
.dest_owners
= std::vector(dest_owners.data(),
dest_owners.data() + dest_owners.size()),
.dest_points
= std::vector(dest_points.data(),
dest_points.data() + dest_points.size()),
.dest_cells = std::vector(
dest_cells.data(), dest_cells.data() + dest_cells.size())};
},
nb::arg("src_owner"), nb::arg("dest_owners"), nb::arg("dest_points"),
nb::arg("dest_cells"))
.def_prop_ro("src_owner",
[](const dolfinx::geometry::PointOwnershipData<T>& self)
{
return nb::ndarray<const int, nb::numpy>(
self.src_owner.data(), {self.src_owner.size()},
nb::handle());
})
.def_prop_ro("dest_owners",
[](const dolfinx::geometry::PointOwnershipData<T>& self)
{
return nb::ndarray<const int, nb::numpy>(
self.dest_owners.data(), {self.dest_owners.size()},
nb::handle());
})
.def_prop_ro("dest_points",
[](const dolfinx::geometry::PointOwnershipData<T>& self)
{
return nb::ndarray<const T, nb::numpy>(
self.dest_points.data(),
{self.dest_points.size() / 3, 3}, nb::handle());
})
.def_prop_ro("dest_cells",
[](const dolfinx::geometry::PointOwnershipData<T>& self)
{
return nb::ndarray<const std::int32_t, nb::numpy>(
self.dest_cells.data(), {self.dest_cells.size()},
nb::handle());
});
}
} // namespace
namespace dolfinx_wrappers
{
void geometry(nb::module_& m)
{
declare_bbtree<float>(m, "float32");
declare_bbtree<double>(m, "float64");
}
} // namespace dolfinx_wrappers
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