Intrepid2_DerivedBasis_HDIV_WEDGE.hpp

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#ifndef Intrepid2_DerivedBasis_HDIV_WEDGE_h
#define Intrepid2_DerivedBasis_HDIV_WEDGE_h

#include <Kokkos_DynRankView.hpp>

#include "Intrepid2_Polynomials.hpp"
#include "Intrepid2_Sacado.hpp"

#include "Intrepid2_DirectSumBasis.hpp"
#include "Intrepid2_TensorBasis.hpp"

namespace Intrepid2
{
  template<class HDIV_TRI, class HVOL_LINE>
  class Basis_Derived_HDIV_Family1_WEDGE
  : public Basis_TensorBasis<typename HVOL_LINE::BasisBase>
  {

  public:
    using OutputViewType = typename HVOL_LINE::OutputViewType;
    using PointViewType  = typename HVOL_LINE::PointViewType ;
    using ScalarViewType = typename HVOL_LINE::ScalarViewType;
    
    using TriDivBasis   = HDIV_TRI;
    using LineHVolBasis = HVOL_LINE;
    
    using BasisBase   = typename HVOL_LINE::BasisBase;
    using TensorBasis = Basis_TensorBasis<BasisBase>;
    
    using DeviceType      = typename BasisBase::DeviceType;
    using ExecutionSpace  = typename BasisBase::ExecutionSpace;
    using OutputValueType = typename BasisBase::OutputValueType;
    using PointValueType  = typename BasisBase::PointValueType;
    
    Basis_Derived_HDIV_Family1_WEDGE(int polyOrder_xy, int polyOrder_z, const EPointType pointType = POINTTYPE_DEFAULT)
    :
    TensorBasis(Teuchos::rcp( new   TriDivBasis(polyOrder_xy,  pointType) ),
                Teuchos::rcp( new LineHVolBasis(polyOrder_z-1, pointType) ))
    {
      this->functionSpace_ = FUNCTION_SPACE_HDIV;
      this->setShardsTopologyAndTags();
    }
    
    OperatorTensorDecomposition getSimpleOperatorDecomposition(const EOperator &operatorType) const override
    {
      if (operatorType == OPERATOR_DIV)
      {
        // div of (f(x,y)h(z),g(x,y)h(z),0) is (df/dx + dg/dy) * h
        
        std::vector< std::vector<EOperator> > ops(1);
        ops[0] = std::vector<EOperator>{OPERATOR_DIV,OPERATOR_VALUE};
        std::vector<double> weights {1.0};
        OperatorTensorDecomposition opDecomposition(ops, weights);
        return opDecomposition;
      }
      else if (OPERATOR_VALUE == operatorType)
      {
        // family 1 goes in x,y components
        std::vector< std::vector<EOperator> > ops(2);
        ops[0] = std::vector<EOperator>{OPERATOR_VALUE,OPERATOR_VALUE}; // spans (x,y) due to H(div,tri) (first tensorial component)
        ops[1] = std::vector<EOperator>{}; // empty z component
        std::vector<double> weights {1.0,0.0};
        return OperatorTensorDecomposition(ops, weights);
      }
      else
      {
        INTREPID2_TEST_FOR_EXCEPTION(true, std::invalid_argument, "Unsupported operator type");
      }
    }
    
    using TensorBasis::getValues;
    
    virtual void getValues(OutputViewType outputValues, const EOperator operatorType,
                           const PointViewType  inputPoints1, const PointViewType inputPoints2,
                           bool tensorPoints) const override
    {
      EOperator op1, op2;
      if (operatorType == OPERATOR_VALUE)
      {
        op1 = OPERATOR_VALUE;
        op2 = OPERATOR_VALUE;

        // family 1 values goes in (x,y) components, 0 in z
        auto outputValuesComponent12 = Kokkos::subview(outputValues,Kokkos::ALL(),Kokkos::ALL(),std::pair<int,int>{0,2});
        auto outputValuesComponent3  = Kokkos::subview(outputValues,Kokkos::ALL(),Kokkos::ALL(),2);

        // place 0 in the z component
        Kokkos::deep_copy(outputValuesComponent3, 0.0);
        this->TensorBasis::getValues(outputValuesComponent12,
                                     inputPoints1, op1,
                                     inputPoints2, op2, tensorPoints);

      }
      else if (operatorType == OPERATOR_DIV)
      {
        // div of (f(x,y)h(z),g(x,y)h(z),0) is (df/dx + dg/dy) * h
        
        op1 = OPERATOR_DIV;
        op2 = OPERATOR_VALUE;

        this->TensorBasis::getValues(outputValues,
                                     inputPoints1, op1,
                                     inputPoints2, op2, tensorPoints);
      }
      else
      {
        INTREPID2_TEST_FOR_EXCEPTION(true,std::invalid_argument,"operator not yet supported");
      }
    }

    virtual void getDofCoeffs( ScalarViewType dofCoeffs ) const override {
      auto dofCoeffs1 = Kokkos::subview(dofCoeffs,Kokkos::ALL(),0);
      auto dofCoeffs2 = Kokkos::subview(dofCoeffs,Kokkos::ALL(),1);
      Kokkos::deep_copy(dofCoeffs1,0.0);
      this->TensorBasis::getDofCoeffs(dofCoeffs2);
    }
  };

  template<class HVOL_TRI, class HGRAD_LINE>
  class Basis_Derived_HDIV_Family2_WEDGE
  : public Basis_TensorBasis<typename HGRAD_LINE::BasisBase>
  {
  public:
    using OutputViewType = typename HGRAD_LINE::OutputViewType;
    using PointViewType  = typename HGRAD_LINE::PointViewType ;
    using ScalarViewType = typename HGRAD_LINE::ScalarViewType;
    
    using BasisBase = typename HGRAD_LINE::BasisBase;

    using DeviceType      = typename BasisBase::DeviceType;
    using ExecutionSpace  = typename BasisBase::ExecutionSpace;
    using OutputValueType = typename BasisBase::OutputValueType;
    using PointValueType  = typename BasisBase::PointValueType;
    
    using TriVolBasis   = HVOL_TRI;
    using LineGradBasis = HGRAD_LINE;
    
    using TensorBasis = Basis_TensorBasis<BasisBase>;
  public:
    Basis_Derived_HDIV_Family2_WEDGE(int polyOrder_xy, int polyOrder_z, const EPointType pointType = POINTTYPE_DEFAULT)
    :
    TensorBasis(Teuchos::rcp( new TriVolBasis(polyOrder_xy-1,pointType)),
                Teuchos::rcp( new LineGradBasis(polyOrder_z,pointType)))
    {
      this->functionSpace_ = FUNCTION_SPACE_HDIV;
      this->setShardsTopologyAndTags();
    }
    
    using TensorBasis::getValues;
    
    virtual OperatorTensorDecomposition getSimpleOperatorDecomposition(const EOperator &operatorType) const override
    {
      const EOperator & VALUE = OPERATOR_VALUE;
      const EOperator & GRAD  = OPERATOR_GRAD;
      const EOperator & DIV   = OPERATOR_DIV;
      if (operatorType == VALUE)
      {
        // family 2 goes in z component
        std::vector< std::vector<EOperator> > ops(2);
        ops[0] = std::vector<EOperator>{}; // will span x,y because family 1's first component does
        ops[1] = std::vector<EOperator>{VALUE,VALUE};
        std::vector<double> weights {0.,1.0};
        OperatorTensorDecomposition opDecomposition(ops, weights);
        return opDecomposition;
      }
      else if (operatorType == DIV)
      {
        // div of (0, 0, f*g, where f=f(x,y), g=g(z), equals f * g'(z).
        std::vector< std::vector<EOperator> > ops(1);
        ops[0] = std::vector<EOperator>{VALUE,GRAD};
        std::vector<double> weights {1.0};
        OperatorTensorDecomposition opDecomposition(ops, weights);
        return opDecomposition;
      }
      else
      {
        INTREPID2_TEST_FOR_EXCEPTION(true, std::invalid_argument, "Unsupported operator type");
      }
    }
    
    virtual void getValues(OutputViewType outputValues, const EOperator operatorType,
                           const PointViewType  inputPoints1, const PointViewType inputPoints2,
                           bool tensorPoints) const override
    {
      EOperator op1, op2;
      if (operatorType == OPERATOR_VALUE)
      {
        op1 = OPERATOR_VALUE;
        op2 = OPERATOR_VALUE;

        // family 2 values goes in z component
        auto outputValuesComponent12 = Kokkos::subview(outputValues,Kokkos::ALL(),Kokkos::ALL(),std::pair<int,int>{0,2});
        auto outputValuesComponent3  = Kokkos::subview(outputValues,Kokkos::ALL(),Kokkos::ALL(),2);

        // place 0 in the x,y components
        Kokkos::deep_copy(outputValuesComponent12, 0.0);
        this->TensorBasis::getValues(outputValuesComponent3,
                                     inputPoints1, op1,
                                     inputPoints2, op2, tensorPoints);

      }
      else if (operatorType == OPERATOR_DIV)
      {
        // div of (0, 0, f*g, where f=f(x,y), g=g(z), equals f * g'(z).
        op1 = OPERATOR_VALUE;
        op2 = OPERATOR_GRAD;

        this->TensorBasis::getValues(outputValues,
                                     inputPoints1, op1,
                                     inputPoints2, op2, tensorPoints);
      }
      else
      {
        INTREPID2_TEST_FOR_EXCEPTION(true,std::invalid_argument,"operator not yet supported");
      }
    }

    virtual void getDofCoeffs( ScalarViewType dofCoeffs ) const override {
      auto dofCoeffs1 = Kokkos::subview(dofCoeffs,Kokkos::ALL(),0);
      auto dofCoeffs2 = Kokkos::subview(dofCoeffs,Kokkos::ALL(),1);
      this->TensorBasis::getDofCoeffs(dofCoeffs1);
      Kokkos::deep_copy(dofCoeffs2,0.0);
    }
  };

  
  template<class HDIV_TRI, class HVOL_TRI, class HGRAD_LINE, class HVOL_LINE>
  class Basis_Derived_HDIV_WEDGE
  : public Basis_DirectSumBasis <typename HGRAD_LINE::BasisBase>
  {
    using Family1 = Basis_Derived_HDIV_Family1_WEDGE<HDIV_TRI, HVOL_LINE>;
    using Family2 = Basis_Derived_HDIV_Family2_WEDGE<HVOL_TRI, HGRAD_LINE>;
    using DirectSumBasis = Basis_DirectSumBasis <typename HGRAD_LINE::BasisBase>;
  public:
    using BasisBase = typename HGRAD_LINE::BasisBase;

  protected:
    std::string name_;
    ordinal_type order_xy_;
    ordinal_type order_z_;
    EPointType pointType_;

  public:
    using ExecutionSpace  = typename HGRAD_LINE::ExecutionSpace;
    using OutputValueType = typename HGRAD_LINE::OutputValueType;
    using PointValueType  = typename HGRAD_LINE::PointValueType;
    
    Basis_Derived_HDIV_WEDGE(int polyOrder_xy, int polyOrder_z, const EPointType pointType=POINTTYPE_DEFAULT)
    :
    DirectSumBasis(Teuchos::rcp( new Family1(polyOrder_xy, polyOrder_z, pointType) ),
                   Teuchos::rcp( new Family2(polyOrder_xy, polyOrder_z, pointType) ))
    {
      this->functionSpace_ = FUNCTION_SPACE_HDIV;

      std::ostringstream basisName;
      basisName << "HDIV_WEDGE (" << this->DirectSumBasis::getName() << ")";
      name_ = basisName.str();

      order_xy_ = polyOrder_xy;
      order_z_ = polyOrder_z;
      pointType_ = pointType;
    }
    
    Basis_Derived_HDIV_WEDGE(int polyOrder, const EPointType pointType=POINTTYPE_DEFAULT) : Basis_Derived_HDIV_WEDGE(polyOrder, polyOrder, pointType) {}

    virtual bool requireOrientation() const override
    {
      return true;
    }

    virtual
    const char*
    getName() const override {
      return name_.c_str();
    }

    virtual HostBasisPtr<OutputValueType, PointValueType>
    getHostBasis() const override {
      using HostBasis  = Basis_Derived_HDIV_WEDGE<typename HDIV_TRI::HostBasis, typename HVOL_TRI::HostBasis, typename HGRAD_LINE::HostBasis, typename HVOL_LINE::HostBasis>;
      
      auto hostBasis = Teuchos::rcp(new HostBasis(order_xy_, order_z_, pointType_));
      
      return hostBasis;
    }
  };
} // end namespace Intrepid2

#endif /* Intrepid2_DerivedBasis_HDIV_WEDGE_h */