fieldSelector.hpp

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#ifndef __fieldSelector_hpp__
#define __fieldSelector_hpp__
 
#include "pStructSelector.hpp"
#include "pointFields.hpp"
#include "Time.hpp"
 
namespace pFlow
{
 
template<typename T>
inline
Vector<T> selectedFieldVals(const pStructSelector& selector, const word& name)
{
    using FieldType =  pointField_D<T>;
 
    if(selector.selectedPoints().empty() )
    {
        return Vector<T>("selected-"+name);
    }
 
    if(!selector.pStruct().time().lookupObjectName(name))
    {
        fatalErrorInFunction<<
        "Field "<< name << " does not exist in time repository"<<endl;
        fatalExit;
    }
 
    if(
        selector.pStruct().time().lookupObjectTypeName(name) !=
        FieldType::TYPENAME())
    {
        fatalErrorInFunction<<
        "Type of field "<< name << " in time repository does not match with"<<
        FieldType::TYPENAME()<<endl;
        fatalExit;
    }
 
    const FieldType& field = selector.pStruct().time().lookupObject<FieldType>(name);
 
    auto fieldH = field.hostView();
    const auto& selected = selector.selectedPoints();
    Vector<T> selectedField(
        "selected-"+name, 
        selected.size(), 
        selected.size(), 
        RESERVE());
 
    for(uint32 i=0; i<selected.size(); i++)
    {
        selectedField[i] = fieldH[selected[i]];
    }
 
    return selectedField;
}
 
} // pFlow
 
#endif //__fieldSelector_hpp__