identitygridgeometry.hh

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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
#ifndef DUNE_IDENTITYGRIDGEOMETRY_HH
#define DUNE_IDENTITYGRIDGEOMETRY_HH
 
#include <dune/common/fmatrix.hh>
#include <dune/common/typetraits.hh>
#include <dune/grid/common/geometry.hh>
 
namespace Dune {
 
  template<int mydim, int coorddim, class GridImp>
  class IdentityGridGeometry :
    public GeometryDefaultImplementation <mydim, coorddim, GridImp, IdentityGridGeometry>
  {
  private:
 
    typedef typename GridImp::ctype ctype;
 
 
  public:
 
    // The codimension of this entitypointer wrt the host grid
    enum {CodimInHostGrid = GridImp::HostGridType::dimension - mydim};
    enum {DimensionWorld = GridImp::HostGridType::dimensionworld};
 
    // select appropiate hostgrid geometry via typeswitch
    typedef typename GridImp::HostGridType::Traits::template Codim<CodimInHostGrid>::Geometry HostGridGeometryType;
    typedef typename GridImp::HostGridType::Traits::template Codim<CodimInHostGrid>::Geometry HostGridLocalGeometryType;
 
    typedef typename conditional<coorddim==DimensionWorld, HostGridGeometryType, HostGridLocalGeometryType>::type HostGridGeometry;
 
    typedef typename HostGridGeometryType::JacobianInverseTransposed JacobianInverseTransposed;
    typedef typename HostGridGeometryType::JacobianTransposed JacobianTransposed;
 
 
    IdentityGridGeometry(const HostGridGeometry& hostGeometry)
      : hostGeometry_(hostGeometry)
    {}
 
 
    GeometryType type () const {
      return hostGeometry_.type();
    }
 
    // return wether we have an affine mapping
    bool affine() const {
      return hostGeometry_.affine();
    }
 
    int corners () const {
      return hostGeometry_.corners();
    }
 
 
    const FieldVector<ctype, coorddim> corner (int i) const {
      return hostGeometry_.corner(i);
    }
 
 
    FieldVector<ctype, coorddim> global (const FieldVector<ctype, mydim>& local) const {
      return hostGeometry_.global(local);
    }
 
    JacobianTransposed
    jacobianTransposed ( const FieldVector<ctype, mydim>& local ) const {
      return hostGeometry_.jacobianTransposed(local);
    }
 
    FieldVector<ctype, mydim> local (const FieldVector<ctype, coorddim>& global) const {
      return hostGeometry_.local(global);
    }
 
 
    bool checkInside(const FieldVector<ctype, mydim> &local) const {
      return hostGeometry_.checkInside(local);
    }
 
 
    ctype integrationElement (const FieldVector<ctype, mydim>& local) const {
      return hostGeometry_.integrationElement(local);
    }
 
 
    JacobianInverseTransposed jacobianInverseTransposed (const FieldVector<ctype, mydim>& local) const {
      return hostGeometry_.jacobianInverseTransposed(local);
    }
 
 
    HostGridGeometry hostGeometry_;
 
  };
 
}  // namespace Dune
 
#endif