Commit f575dd05 authored by fencl's avatar fencl
Browse files

Implementation of 2D FSM updateCell

parent 1dad5733

src/TNL/Experimental/Hamilton-Jacobi/Solvers/hamilton-jacobi/tnlDirectEikonalMethodsBase_impl.h

+61 −4
Original line number Diff line number Diff line
@@ -187,7 +187,7 @@ initInterface( const MeshFunctionType& input, 
      }

}



template< typename Real,

/*template< typename Real,

          typename Device,

          typename Index >

   template< typename MeshEntity >
@@ -230,7 +230,7 @@ updateCell( MeshFunctionType& u, 
       fabs( b ) == TypeInfo< Real >::getMaxValue() ||

       fabs( a - b ) >= h )

   {

      tmp = argAbsMin( a, b ) + sign( value ) * h;

      tmp = argAbsMin( a, b ) + sign( value ) * h;*/

      /*   std::cerr << "a = " << a << " b = " << b << " h = " << h 

             << " ArgAbsMin( a, b ) = " << ArgAbsMin( a, b ) << " sign( value ) = " << sign( value )

             << " sign( value ) * h = " << sign( value ) * h
@@ -243,15 +243,72 @@ updateCell( MeshFunctionType& u, 
      std::cerr << " tmp = " << tmp << std::endl;

      std::cerr << " res = " << res << std::endl;*/



   }

   /*}

   else

      tmp = 0.5 * ( a + b + sign( value ) * sqrt( 2.0 * h * h - ( a - b ) * ( a - b ) ) );



   u[ cell.getIndex() ] = argAbsMin( value, tmp );

   //std::cerr << ArgAbsMin( value, tmp ) << " ";   

}*/



template< typename Real,

          typename Device,

          typename Index >

   template< typename MeshEntity >

void

tnlDirectEikonalMethodsBase< Meshes::Grid< 2, Real, Device, Index > >::

updateCell( MeshFunctionType& u,

            const MeshEntity& cell)

            //MeshFunctionType& v

{

   const auto& neighborEntities = cell.template getNeighborEntities< 2 >();

   const MeshType& mesh = cell.getMesh();

  

   const RealType& hx = mesh.getSpaceSteps().x();

   const RealType& hy = mesh.getSpaceSteps().y();

   const RealType value = u( cell );

   //const RealType permeability = v( cell );

   Real a, b, tmp;

   

   if( cell.getCoordinates().x() == 0 )

      a = u[ neighborEntities.template getEntityIndex< 1,  0 >() ];

   else if( cell.getCoordinates().x() == mesh.getDimensions().x() - 1 )

      a = u[ neighborEntities.template getEntityIndex< -1,  0 >() ];

   else

   {

      a = TNL::argAbsMin( u[ neighborEntities.template getEntityIndex< -1,  0 >() ],

                     u[ neighborEntities.template getEntityIndex<  1,  0 >() ] );

   }



   if( cell.getCoordinates().y() == 0 )

      b = u[ neighborEntities.template getEntityIndex< 0,  1 >()];

   else if( cell.getCoordinates().y() == mesh.getDimensions().y() - 1 )

      b = u[ neighborEntities.template getEntityIndex< 0,  -1 >() ];

   else

   {

      b = TNL::argAbsMin( u[ neighborEntities.template getEntityIndex< 0,  -1 >() ],

                     u[ neighborEntities.template getEntityIndex< 0,   1 >() ] );

   }

   if( fabs( a ) == TypeInfo< Real >::getMaxValue() && 

       fabs( b ) == TypeInfo< Real >::getMaxValue() )

      return;

   if( fabs( a ) == TypeInfo< Real >::getMaxValue() ||

       fabs( b ) == TypeInfo< Real >::getMaxValue() ||

       fabs( a - b ) >= TNL::sqrt( (hx * hx + hy * hy)/1 ) ) //permeability ) )

   {

      tmp = 

        fabs( a ) >= fabs( b ) ? b + TNL::sign( value ) * hy :

                                 a + TNL::sign( value ) * hx;

   }

   else

      tmp = ( hx * hx * a + hy * hy * b + 

            sign( value ) * hx * hy * sqrt( ( hx * hx + hy * hy )/1 - 

            ( a - b ) * ( a - b ) ) )/( hx * hx + hy * hy ); //permeability

            

   

   u[ cell.getIndex() ] = argAbsMin( value, tmp );

}



template< typename Real,

          typename Device,

          typename Index >