{

// 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) {

throw std::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];