modifiedPrincipalInvariants.hh

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/*   This file is part of the C++-library RFFGen.                              */
/*   Copyright 2015 Lars Lubkoll                                               */
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#ifndef RFFGEN_MODIFIED_PRINCIPAL_INVARIANTS_HH
#define RFFGEN_MODIFIED_PRINCIPAL_INVARIANTS_HH

#include "principalInvariants.hh"
#include "shiftedInvariant.hh"
#include "../Util/modifyInvariants.hh"

namespace RFFGen
{
  namespace Concepts { template <class> struct SymmetricMatrixConceptCheck; }
  namespace LinearAlgebra
  {
    template <class Matrix, class = Concepts::SymmetricMatrixConceptCheck<Matrix> >
    struct FirstModifiedPrincipalInvariant
        : ModifyFirstPrincipalInvariant<Matrix,FirstPrincipalInvariant<Matrix> >
    {
      FirstModifiedPrincipalInvariant() = default;

      FirstModifiedPrincipalInvariant(const Matrix& A)
        : ModifyFirstPrincipalInvariant<Matrix,FirstPrincipalInvariant<Matrix> > ( A , FirstPrincipalInvariant<Matrix>(A) )
      {}
    };

    template <class Matrix, class = Concepts::SymmetricMatrixConceptCheck<Matrix> >
    struct SecondModifiedPrincipalInvariant
        : ModifySecondPrincipalInvariant<Matrix,SecondPrincipalInvariant<Matrix> >
    {
      SecondModifiedPrincipalInvariant() = default;

      SecondModifiedPrincipalInvariant(const Matrix& A)
        : ModifySecondPrincipalInvariant<Matrix,SecondPrincipalInvariant<Matrix> > ( A , SecondPrincipalInvariant<Matrix>(A) )
      {}
    };

    template <class Matrix>
    using ThirdModifiedPrincipalInvariant = ThirdPrincipalInvariant<Matrix>;


    template < class Matrix , int offset = LinearAlgebra::dimension<Matrix>() >
    using ShiftedFirstModifiedPrincipalInvariant  = ShiftedInvariant< FirstModifiedPrincipalInvariant<Matrix>  , offset >;

    template < class Matrix , int offset = LinearAlgebra::dimension<Matrix>() >
    using ShiftedSecondModifiedPrincipalInvariant = ShiftedInvariant< SecondModifiedPrincipalInvariant<Matrix> , offset >;

    template <class Matrix>
    using ShiftedThirdModifiedPrincipalInvariant  = ShiftedInvariant< ThirdModifiedPrincipalInvariant<Matrix>  , 1 >;
  }
}

#endif // RFFGEN_MODIFIED_PRINCIPAL_INVARIANTS_HH