DistanceMap.cpp

/*

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*/

#include "VesselSegment.hpp"
#include "UnitCollection.hpp"
#include "DimensionalChastePoint.hpp"
#include "DistanceMap.hpp"

template<unsigned DIM>
DistanceMap<DIM>::DistanceMap()

    :   AbstractRegularGridDiscreteContinuumSolver<DIM>(),
        mUseSegmentRadii(false)
{

}

template<unsigned DIM>
boost::shared_ptr<DistanceMap<DIM> > DistanceMap<DIM>::Create()
{
    MAKE_PTR(DistanceMap, pSelf);
    return pSelf;
}

template<unsigned DIM>
DistanceMap<DIM>::~DistanceMap()
{

}

template<unsigned DIM>
void DistanceMap<DIM>::SetUseSegmentRadii(bool useRadii)
{
    this->mUseSegmentRadii = useRadii;
}

template<unsigned DIM>
void DistanceMap<DIM>::Solve()
{
    // Set up the vtk solution on the regular grid
    if(!this->mpVtkSolution)
    {
        this->Setup();
    }

    unsigned number_of_points = this->mpRegularGrid->GetNumberOfPoints();
    unsigned extents_x = this->mpRegularGrid->GetExtents()[0];
    unsigned extents_y = this->mpRegularGrid->GetExtents()[1];
    unsigned extents_z = this->mpRegularGrid->GetExtents()[2];

    // Distance map storage, note results in the units of grid length scale
    std::vector<double> distances(number_of_points, 0.0);
    if (this->mpNetwork)
    {
        std::vector<boost::shared_ptr<VesselSegment<DIM> > > segments;
        segments = this->mpNetwork->GetVesselSegments();
        for (unsigned i = 0; i < extents_z; i++) // Z
        {
            for (unsigned j = 0; j < extents_y; j++) // Y
            {
                for (unsigned k = 0; k < extents_x; k++) // X
                {
                    unsigned grid_index = this->mpRegularGrid->Get1dGridIndex(k, j, i);
                    DimensionalChastePoint<DIM> location = this->mpRegularGrid->GetLocation(k ,j, i);
                    units::quantity<unit::length> min_distance = DBL_MAX * unit::metres;
                    for (unsigned idx = 0; idx <  segments.size(); idx++)
                    {
                        units::quantity<unit::length> seg_dist = segments[idx]->GetDistance(location);
                        if(this->mUseSegmentRadii && seg_dist<=segments[idx]->GetRadius())
                        {
                            seg_dist = 0.0 * unit::metres;
                        }
                        if(seg_dist < min_distance)
                        {
                            min_distance = seg_dist;
                        }
                    }
                    distances[grid_index] = min_distance/this->mpRegularGrid->GetReferenceLengthScale();
                }
            }
        }
    }
    this->UpdateSolution(distances);
    if (this->mWriteSolution)
    {
        this->Write();
    }
}

// Explicit instantiation
template class DistanceMap<2> ;
template class DistanceMap<3> ;