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pybind11_akantu.cc
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Fri, Jul 12, 19:08

pybind11_akantu.cc
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/* -------------------------------------------------------------------------- */
#include "pybind11_akantu.hh"
/* -------------------------------------------------------------------------- */
#include <pybind11/numpy.h>
#include <pybind11/pybind11.h>
/* -------------------------------------------------------------------------- */
namespace py = pybind11;
namespace akantu {
PYBIND11_MODULE(aka_test, m) {
m.doc() = "Module for the tests of akantu";
py::class_<ArrayProxy<Real>>(m, "ArrayProxy", py::buffer_protocol())
.def_buffer([](ArrayProxy<Real> & a) {
return py::buffer_info(
a.storage(), /* Pointer to buffer */
sizeof(Real), /* Size of one scalar */
py::format_descriptor<Real>::format(), /* Python struct-style
format descriptor */
2, /* Number of dimensions */
{a.size(), a.getNbComponent()}, /* Buffer dimensions */
{sizeof(Real) *
a.getNbComponent(), /* Strides (in bytes) for each index */
sizeof(Real)});
})
.def(py::init([](py::array & n) {
/* Request a buffer descriptor from Python */
py::buffer_info info = n.request();
/* Some sanity checks ... */
if (info.format != py::format_descriptor<Real>::format())
throw std::runtime_error(
"Incompatible format: expected a double array!");
if (info.ndim != 2)
throw std::runtime_error("Incompatible buffer dimension!");
return std::make_unique<ArrayProxy<Real>>(static_cast<Real *>(info.ptr),
info.shape[0], info.shape[1]);
}));
py::class_<MatrixProxy<Real>>(m, "Matrix", py::buffer_protocol())
.def_buffer([](MatrixProxy<Real> & a) {
return py::buffer_info(
a.storage(), /* Pointer to buffer */
sizeof(Real), /* Size of one scalar */
py::format_descriptor<Real>::format(), /* Python struct-style
format descriptor */
2, /* Number of dimensions */
{a.size(0), a.size(1)}, /* Buffer dimensions */
{sizeof(Real), a.size(0)*sizeof(Real)} /* Strides (in bytes) for each index */
);
})
.def(py::init([](py::array & n) {
/* Request a buffer descriptor from Python */
py::buffer_info info = n.request();
/* Some sanity checks ... */
if (info.format != py::format_descriptor<Real>::format())
throw std::runtime_error(
"Incompatible format: expected a double array!");
if (info.ndim != 2)
throw std::runtime_error("Incompatible buffer dimension!");
return std::make_unique<MatrixProxy<Real>>(static_cast<Real *>(info.ptr),
info.shape[0], info.shape[1]);
}));
} // Module aka test
} // namespace akantu

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