py_converters.cpp

#include"py_converters.h"

voidconvert_trans_affine(const py::object& transform, agg::trans_affine& affine)
{
// If None assume identity transform so leave affine unchanged
if (transform.is_none()) {
return;
 }

auto array = py::array_t<double, py::array::c_style>::ensure(transform);
if (!array || array.ndim() != 2 || array.shape(0) != 3 || array.shape(1) != 3) {
throwstd::invalid_argument("Invalid affine transformation matrix");
 }

auto buffer = array.data();
 affine.sx = buffer[0];
 affine.shx = buffer[1];
 affine.tx = buffer[2];
 affine.shy = buffer[3];
 affine.sy = buffer[4];
 affine.ty = buffer[5];
}