object_creator< v, prp > Struct Template Reference

It create a boost::fusion vector with the selected properties. More...

Detailed Description

template<typename v, int... prp>
struct object_creator< v, prp >

It create a boost::fusion vector with the selected properties.

Template Parameters

v	boost::fusion::vector
prp	selected properties

Create a compile-time object and copy from the selected properties

    typedef Point_test<float> p;
    typedef Point_test<float>::type vboost;
    typedef object_creator<Point_test<float>::type,0,1,4>::type vboost_red;

    object<vboost> src;
    object<vboost_red> dst;

    // fill the source properties x,y,v = 0,1,4 with data

    boost::fusion::at_c<p::x>(src.data) = 1.0;
    boost::fusion::at_c<p::y>(src.data) = 2.0;

    for (size_t i = 0 ; i < 3 ;  i++)
        boost::fusion::at_c<p::v>(src.data)[i] = i + 5.0;

    // copy from src to dst
    object_si_d<object<vboost>,object<vboost_red>,OBJ_NORMAL,0,1,4>(src,dst);

    // Check the result
    BOOST_REQUIRE_EQUAL(boost::fusion::at_c<0>(dst.data),1.0);
    BOOST_REQUIRE_EQUAL(boost::fusion::at_c<1>(dst.data),2.0);

    for (size_t i = 0 ; i < 3 ;  i++)
        BOOST_REQUIRE_EQUAL(boost::fusion::at_c<2>(dst.data)[i],i + 5.0);

Create a compile-time Encap object and copy from the selected properties

    typedef encapc<1,Point_test<float>,openfpm::vector<Point_test<float>>::layout_type> encap_src;
    typedef encapc<1,object<vboost_red>,openfpm::vector<object<vboost_red>>::layout_type> encap_dst;

    openfpm::vector<p> v_point;
    openfpm::vector<object<vboost_red>> v_point_red;

    v_point.resize(2);
    v_point_red.resize(2);

    v_point.template get<p::x>(0) = 1.0;
    v_point.template get<p::y>(0) = 2.0;

    for (size_t i = 0 ; i < 3 ;  i++)
        v_point.template get<p::v>(0)[i] = i + 5.0;

    auto src_e = v_point.get(0);
    auto dst_e = v_point_red.get(0);

    object_si_d<encap_src,encap_dst,OBJ_ENCAP,0,1,4>(src_e,dst_e);

    BOOST_REQUIRE_EQUAL(v_point_red.get(0).template get<0>(),1.0);
    BOOST_REQUIRE_EQUAL(v_point_red.get(0).template get<1>(),2.0);

    for (size_t i = 0 ; i < 3 ;  i++)
        BOOST_REQUIRE_EQUAL(v_point_red.get(0).template get<2>()[i],i + 5.0);

Create a compile-time object and copy to the selected properties

util_test.hpp object write example

Create a compile-time Encap object and copy to the selected properties

util_test.hpp object write encap example

Definition at line 255 of file object_creator.hpp.

#include <object_creator.hpp>

Public Types
typedef boost::fusion::result_of::as_vector < typename object_creator_impl < v, boost::mpl::vector <>, prp... >::type >::type	type

---

The documentation for this struct was generated from the following file:

• openfpm_data/src/util/object_creator.hpp