NetworkToImage.cpp

/*

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#include "Exception.hpp"
#include "RegularGrid.hpp"
#include "DistanceMap.hpp"
#include "NetworkToImage.hpp"
#include "UnitCollection.hpp"
#include "BaseUnits.hpp"
#include "UblasIncludes.hpp"
#include "UblasVectorInclude.hpp"

template<unsigned DIM>
NetworkToImage<DIM>::NetworkToImage()
    : mpImage(vtkSmartPointer<vtkImageData>::New()),
      mpNetwork(),
      mGridSpacing(BaseUnits::Instance()->GetReferenceLengthScale()),
      mPaddingFactors(zero_vector<double>(DIM)),
      mImageDimension(DIM)
{

}

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

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

}

template<unsigned DIM>
vtkSmartPointer<vtkImageData> NetworkToImage<DIM>::GetOutput()
{
    if(mpImage)
    {
        return(mpImage);
    }
    else
    {
        EXCEPTION("No output set. Did you run 'Update()' ?");
    }
}

template<unsigned DIM>
void NetworkToImage<DIM>::SetNetwork(boost::shared_ptr<VesselNetwork<DIM> > pNetwork)
{
    mpNetwork = pNetwork;
}

template<unsigned DIM>
void NetworkToImage<DIM>::SetGridSpacing(units::quantity<unit::length> spacing)
{
    mGridSpacing = spacing;
}

template<unsigned DIM>
void NetworkToImage<DIM>::SetPaddingFactors(double paddingX, double paddingY, double paddingZ)
{
    mPaddingFactors[0] = paddingX;
    mPaddingFactors[1] = paddingY;
    if(DIM==3)
    {
        mPaddingFactors[2] = paddingZ;
    }
}

template<unsigned DIM>
void NetworkToImage<DIM>::SetImageDimension(unsigned dimension)
{
    mImageDimension = dimension;
}

template<unsigned DIM>
void NetworkToImage<DIM>::Update()
{
    if(!mpNetwork)
    {
        EXCEPTION("No input vessel network set.");
    }

    std::pair<DimensionalChastePoint<DIM>, DimensionalChastePoint<DIM> > extents = mpNetwork->GetExtents(true);
    c_vector<double, DIM> range = ublas::element_prod(scalar_vector<double>(DIM, 1.0) + 2.0*mPaddingFactors, (extents.second - extents.first).GetLocation(mGridSpacing));
    c_vector<double, DIM> origin = (extents.first.GetLocation(mGridSpacing) - ublas::element_prod((extents.second - extents.first).GetLocation(mGridSpacing), mPaddingFactors));

    boost::shared_ptr<RegularGrid<DIM> > p_grid = RegularGrid<DIM>::Create();
    p_grid->SetSpacing(mGridSpacing);
    std::vector<unsigned> final_extents;
    final_extents.push_back(unsigned(range[0])+1);
    final_extents.push_back(unsigned(range[1])+1);
    if(mImageDimension == 3 and DIM==3)
    {
        final_extents.push_back(unsigned(range[2])+1);
    }
    else
    {
        final_extents.push_back(1);
    }
    p_grid->SetExtents(final_extents);
    p_grid->SetOrigin(DimensionalChastePoint<DIM>(origin, mGridSpacing));

    boost::shared_ptr<DistanceMap<DIM> > p_distance_map = DistanceMap<DIM>::Create();
    p_distance_map->SetVesselNetwork(mpNetwork);
    p_distance_map->SetGrid(p_grid);
    p_distance_map->SetUseSegmentRadii(true);
    p_distance_map->Setup();
    p_distance_map->Solve();

    std::vector<double> point_solution = p_distance_map->GetSolution(p_grid);
    for(unsigned idx=0; idx<point_solution.size();idx++)
    {
        if(point_solution[idx]==0.0)
        {
            point_solution[idx] = 1.0;
        }
        else
        {
            point_solution[idx] = 0.0;
        }
    }

    p_grid->SetUpVtkGrid();
    p_grid->SetPointValues(point_solution);
    mpImage = p_grid->GetVtkGrid();
    mpImage->GetPointData()->SetScalars(mpImage->GetPointData()->GetArray("Point Values"));
}

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