Intrepid2_CubatureControlVolumeBoundary.hpp

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#ifndef __INTREPID2_CUBATURE_CONTROLVOLUME_BOUNDARY_HPP__
#define __INTREPID2_CUBATURE_CONTROLVOLUME_BOUNDARY_HPP__
 
#include "Intrepid2_ConfigDefs.hpp"
#include "Intrepid2_Cubature.hpp"
 
#include "Shards_CellTopology.hpp"
#include "Intrepid2_CellTools.hpp"
 
#include "Intrepid2_FunctionSpaceTools.hpp"
 
namespace Intrepid2{
  
  template<typename ExecSpaceType = void,
           typename pointValueType = double,
           typename weightValueType = double>
  class CubatureControlVolumeBoundary
    : public Cubature<ExecSpaceType,pointValueType,weightValueType> {
  public:
 
    template<typename cubPointViewType,
             typename subcvCoordViewType,
             typename mapViewType>
    struct Functor {
        cubPointViewType        _cubPoints;
      const subcvCoordViewType      _subcvCoords;
      const mapViewType             _sideMap;
 
      KOKKOS_INLINE_FUNCTION
      Functor( cubPointViewType        cubPoints_,
               subcvCoordViewType      subcvCoords_,
               mapViewType             sideMap_ )
        : _cubPoints(cubPoints_), 
          _subcvCoords(subcvCoords_), _sideMap(sideMap_) {}
 
      KOKKOS_INLINE_FUNCTION
      void operator()(const ordinal_type cell) const {        
        const ordinal_type numNodesPerSide = _sideMap(0);
        const ordinal_type spaceDim        = _cubPoints.extent(1);
 
        // compute side centers
        typename cubPointViewType::value_type val[3] = {};
        for (ordinal_type j=0;j<numNodesPerSide;++j) {
          for (ordinal_type i=0;i<spaceDim;++i) 
            val[i] += _subcvCoords(cell, _sideMap(j+1), i);
        }
        for (ordinal_type i=0;i<spaceDim;++i) 
          _cubPoints(cell, i) = (val[i]/numNodesPerSide);
        
      }
    };
 
  protected:
    
    shards::CellTopology primaryCellTopo_;
 
    shards::CellTopology subcvCellTopo_;
 
    ordinal_type degree_;
    
    ordinal_type sideIndex_;
 
    // cubature points and weights associated with sub-control volume.
    Kokkos::View<ordinal_type**,Kokkos::HostSpace> boundarySidesHost_;
    Kokkos::View<ordinal_type**,Kokkos::LayoutRight,ExecSpaceType> sideNodeMap_;
    Kokkos::DynRankView<pointValueType, ExecSpaceType> sidePoints_;
    
  public:
    typedef typename Cubature<ExecSpaceType,pointValueType,weightValueType>::pointViewType  pointViewType;
    typedef typename Cubature<ExecSpaceType,pointValueType,weightValueType>::weightViewType weightViewType;
 
    using Cubature<ExecSpaceType,pointValueType,weightValueType>::getCubature;
 
    virtual
    void
    getCubature( pointViewType  cubPoints,
                 weightViewType cubWeights,
                 pointViewType  cellCoords) const;
    
    virtual
    ordinal_type
    getNumPoints() const {
      // one control volume boundary cubature point per subcell node (for now)
      const ordinal_type sideDim = primaryCellTopo_.getDimension() - 1;
      return primaryCellTopo_.getNodeCount(sideDim, sideIndex_);
    }
    
    virtual
    ordinal_type 
    getDimension() const {
      return primaryCellTopo_.getDimension();
    }
    
    virtual
    const char*
    getName() const {
      return "CubatureControlVolumeBoundary";
    }
 
    CubatureControlVolumeBoundary(const shards::CellTopology cellTopology, 
                                  const ordinal_type         sideIndex);
    virtual ~CubatureControlVolumeBoundary() {}
    
  };
 
} 
 
#include "Intrepid2_CubatureControlVolumeBoundaryDef.hpp"
 
#endif