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aka_array.i
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Thu, Jun 20, 09:04

aka_array.i
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%{
#define SWIG_FILE_WITH_INIT
#include "aka_array.hh"
%}
%include "typemaps.i"
namespace akantu {
%ignore Array::operator=;
%ignore Array::operator[];
%ignore Array::operator();
%ignore Array::set;
%ignore Array::begin;
%ignore Array::end;
%ignore Array::begin_reinterpret;
%ignore Array::end_reinterpret;
};
%include "aka_array.hh"
namespace akantu {
%template(RArray) Array<akantu::Real, true>;
%template(UArray) Array<akantu::UInt, true>;
%template(BArray) Array<bool, true>;
}
%include "numpy.i"
%init %{
import_array();
%}
%define %akantu_array_typemaps(DATA_TYPE, DATA_TYPECODE)
%typemap(out, fragment="NumPy_Fragments") (akantu::Array< DATA_TYPE > &)
{
npy_intp dims[2] = {$1->getSize(), $1->getNbComponent()};
PyObject* obj = PyArray_SimpleNewFromData(2, dims, DATA_TYPECODE, $1->storage());
PyArrayObject* array = (PyArrayObject*) obj;
if (!array) SWIG_fail;
$result = SWIG_Python_AppendOutput($result, obj);
}
%enddef
%akantu_array_typemaps(double, NPY_DOUBLE)
%akantu_array_typemaps(float, NPY_FLOAT )
%akantu_array_typemaps(unsigned int, NPY_UINT )
%typemap(out, fragment="NumPy_Fragments") (akantu::Array< bool > &)
{
npy_intp dims[2] = {$1->getSize(), $1->getNbComponent()};
int data_typecode = NPY_NOTYPE;
size_t s = sizeof(bool);
switch(s) {
case 1: data_typecode = NPY_BOOL; break;
case 2: data_typecode = NPY_UINT8; break;
case 4: data_typecode = NPY_UINT16; break;
case 8: data_typecode = NPY_UINT32; break;
}
PyObject* obj = PyArray_SimpleNewFromData(2, dims, data_typecode, $1->storage());
PyArrayObject* array = (PyArrayObject*) obj;
if (!array) SWIG_fail;
$result = SWIG_Python_AppendOutput($result, obj);
}
%inline %{
namespace akantu{
template <typename T>
class ArrayForPython : public Array<T>{
public:
ArrayForPython(T * wrapped_memory,
UInt size = 0,
UInt nb_component = 1,
const ID & id = "")
: Array<T>(0,nb_component,id){
this->values = wrapped_memory;
this->size = size;
};
~ArrayForPython(){
this->values = NULL;
};
void resize(UInt new_size){
AKANTU_DEBUG_ASSERT(this->size == new_size,"cannot resize a temporary vector");
}
};
}
%}
namespace akantu {
%template(ArrayForPythonReal) ArrayForPython<Real>;
}
%typemap(in) akantu::Array<double> & {
if (!PyArray_Check($input)) {
AKANTU_EXCEPTION("incompatible input which is not a numpy");
}
else {
PyArray_Descr * numpy_type = (PyArray_Descr*)PyArray_DESCR((PyArrayObject*)$input);
if (numpy_type->kind != 'f') throw;
UInt _n = PyArray_NDIM((PyArrayObject*)$input);
if (_n != 2) AKANTU_EXCEPTION("incompatible numpy dimension " << _n);
npy_intp * ndims = PyArray_DIMS((PyArrayObject*)$input);
akantu::UInt sz = ndims[0];
akantu::UInt nb_components = ndims[1];
PyArrayIterObject *iter = (PyArrayIterObject *)PyArray_IterNew($input);
if (iter == NULL) {
AKANTU_EXCEPTION("Python internal error");
// PyErr_Print();
}
$1 = new akantu::ArrayForPython<double>((double*)(iter->dataptr),sz,nb_components,"tmp_array_for_python");
}
}

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