object_si_d< v_src, v_dst, OBJ_ENCAP, prp...> Struct Template Reference

It copy the properties from one object to another. More...

Detailed Description

template<typename v_src, typename v_dst, int... prp>
struct object_si_d< v_src, v_dst, OBJ_ENCAP, prp...>

It copy the properties from one object to another.

Given a set of properties for the source object (0,1,3) it copy that properties to the destination object properties (0,1,2)

For object we mean an object that follow the OpenFPM data structure format, see openFPM_data wiki for more information

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);

Definition at line 165 of file object_si_d.hpp.

#include <object_si_d.hpp>

Public Member Functions
	object_si_d (const v_src &&vs, v_dst &&vd)
	object_si_d (const v_src &vs, v_dst &vd)

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

• openfpm_data/src/util/object_si_d.hpp