[tzaht]

Hi all,

I am having some trouble understanding the sequence, 'this->' in OpenFOAM.

template<class ParcelType>
template<class TrackCloudType>
void Foam::KinematicParcel<ParcelType>::setCellValues
(
    TrackCloudType& cloud,
    trackingData& td
)
{
    tetIndices tetIs = this->currentTetIndices();

    td.rhoc() = td.rhoInterp().interpolate(this->coordinates(), tetIs);

    if (td.rhoc() < cloud.constProps().rhoMin())
    {
        if (debug)
        {
            WarningInFunction
                << "Limiting observed density in cell " << this->cell()
                << " to " << cloud.constProps().rhoMin() <<  nl << endl;
        }

        td.rhoc() = cloud.constProps().rhoMin();
    }

    td.Uc() = td.UInterp().interpolate(this->coordinates(), tetIs);

    td.muc() = td.muInterp().interpolate(this->coordinates(), tetIs);
}

I have the following understanding of the '-> operator' in C++.

\textbf{a$\rightarrow$b} \textbf{(this$ \rightarrow b$)}, shorthand notation for (*a).b With $a \rightarrow$ b, b will be a member of the object the pointer a refers to. If, however, a is an object of a class that overloads this operator, then the overloaded operator function gets invoked. Every object in C++ has access to its own address though an important pointer called 'this'.

Let's take for example the following sequence:

this->currentTetIndices()

My point of confusion is that I cannot see the class setCellValues as having a member currentTetIndices().

I appreciate any help that comes my way.

Kind regards.

[olesen]

The right arrow is a regular pointer-to-member. If you scan the inheritance of the class, you will find the corresponding method in the hierarchy.