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  • /***************************************************************************
                              tnlIdenticalGridGeometry_impl.h  -  description
                                 -------------------
        begin                : May 1, 2013
        copyright            : (C) 2013 by Tomas Oberhuber
        email                : tomas.oberhuber@fjfi.cvut.cz
     ***************************************************************************/
    
    /***************************************************************************
     *                                                                         *
     *   This program is free software; you can redistribute it and/or modify  *
     *   it under the terms of the GNU General Public License as published by  *
     *   the Free Software Foundation; either version 2 of the License, or     *
     *   (at your option) any later version.                                   *
     *                                                                         *
     ***************************************************************************/
    
    #ifndef TNLIDENTICALGRIDGEOMETRY_IMPL_H_
    #define TNLIDENTICALGRIDGEOMETRY_IMPL_H_
    
    #include <core/tnlFile.h>
    #include <core/tnlAssert.h>
    
    
    /****
     * Identical geometry for 1D
     */
    
    template< typename Real,
              typename Device,
              typename Index >
    void tnlIdenticalGridGeometry< 1, Real, Device, Index > :: setParametricStep( const tnlTuple< 1, Real >& parametricStep )
    {
       this -> parametricStep = parametricStep;
       this -> elementMeasure = this -> parametricStep. x();
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    const tnlTuple< 1, Real >& tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getParametricStep() const
    {
       return this -> parametricStep;
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    void tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getElementCoordinates( const Index i,
                                                                                      const tnlTuple< 1, Real >& origin,
                                                                                      tnlTuple< 1, Real >& coordinates ) const
    {
       coordinates. x() = ( i + 0.5 ) * parametricStep. x();
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    Real tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getElementMeasure( const Index i ) const
    {
       return elementMeasure;
    }
    
    template< typename Real,
              typename Device,
              typename Index >
       template< Index dx >
    Real tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getElementsDistance( const Index i ) const
    {
       return dx * parametricStep. x();
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    template< Index dx >
    void tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getEdgeCoordinates( const Index i,
                                                                                   const tnlTuple< 1, Real >& origin,
                                                                                   tnlTuple< 1, Real >& coordinates ) const
    {
       coordinates. x() = origin. x() + ( i + 0.5 * ( 1.0 + dx ) ) * parametricStep. x();
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    template< Index dx >
    Real tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getEdgeLength( const Index i ) const
    {
       return 0.0;
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    template< Index dx >
    void tnlIdenticalGridGeometry< 1, Real, Device, Index > :: getEdgeNormal( const Index i,
                                                                              tnlTuple< 1, Real >& normal ) const
    {
       tnlAssert( dx == 1 || dx == -1, cerr << " dx = " << dx << " dy = " << dy << endl );
       normal. x() = dx;
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    bool tnlIdenticalGridGeometry< 1, Real, Device, Index > :: save( tnlFile& file ) const
    {
       if( ! this -> parametricStep. save( file ) )
          return false;
       return true;
    };
    
    template< typename Real,
              typename Device,
              typename Index >
    bool tnlIdenticalGridGeometry< 1, Real, Device, Index > :: load( tnlFile& file )
    {
       if( ! this -> parametricStep. load( file ) )
          return false;
       this -> elementMeasure = this -> parametricStep. x();
       return true;
    };
    
    /****
     * Identical geometry for 2D
     */
    
    
    template< typename Real,
              typename Device,
              typename Index >
    void tnlIdenticalGridGeometry< 2, Real, Device, Index > :: setParametricStep( const tnlTuple< 2, Real >& parametricStep )
    {
       this -> parametricStep = parametricStep;
    
       this -> elementMeasure = this -> parametricStep. x() * this -> parametricStep. y();
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    const tnlTuple< 2, Real >& tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getParametricStep() const
    {
       return this -> parametricStep;
    
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    void tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getElementCoordinates( const Index j,
                                                                                      const Index i,
    
                                                                                      const tnlTuple< 2, Real >& origin,
    
                                                                                      tnlTuple< 2, Real >& coordinates ) const
    {
    
       coordinates. x() = ( i + 0.5 ) * parametricStep. x();
       coordinates. y() = ( j + 0.5 ) * parametricStep. y();
    
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    Real tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getElementMeasure( const Index j,
                                                                                  const Index i ) const
    {
       return elementMeasure;
    }
    
    template< typename Real,
              typename Device,
              typename Index >
       template< Index dy, Index dx >
    Real tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getElementsDistance( const Index j,
                                                                                    const Index i ) const
    {
       if( dy == 0 && dx == 1 )
          return parametricStep. x();
       if( dy == 1 && dx == 0 )
          return parametricStep. y();
       const Real x = dx * parametricStep. x();
       const Real y = dy * parametricStep. y();
       return sqrt( dx * dx + dy * dy );
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    template< Index dy, Index dx >
    void tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getEdgeCoordinates( const Index j,
                                                                                   const Index i,
    
                                                                                   const tnlTuple< 2, Real >& origin,
    
                                                                                   tnlTuple< 2, Real >& coordinates ) const
    {
       coordinates. x() = origin. x() + ( i + 0.5 * ( 1.0 + dx ) ) * parametricStep. x();
       coordinates. y() = origin. y() + ( j + 0.5 * ( 1.0 + dy ) ) * parametricStep. y();
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    
    template< Index dy, Index dx >
    
    Real tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getEdgeLength( const Index j,
                                                                              const Index i ) const
    {
       if( dy == 0 && dx == 1 )
          return parametricStep. y();
       if( dy == 1 && dx == 0 )
          return parametricStep. x();
       tnlAssert( false, cerr << "Bad values of dx and dy - dx = " << dx << " dy = " << dy );
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    
    template< Index dy, Index dx >
    
    void tnlIdenticalGridGeometry< 2, Real, Device, Index > :: getEdgeNormal( const Index j,
                                                                              const Index i,
                                                                              tnlTuple< 2, Real >& normal ) const
    {
       tnlAssert( ( dx == 0 || dx == 1 || dx == -1 ||
                    dy == 0 || dy == 1 || dy == -1 ) &&
                   dx * dy == 0, cerr << " dx = " << dx << " dy = " << dy << endl );
       normal. x() = dx;
       normal. y() = dy;
    }
    
    template< typename Real,
              typename Device,
              typename Index >
    bool tnlIdenticalGridGeometry< 2, Real, Device, Index > :: save( tnlFile& file ) const
    {
    
       if( ! this -> parametricStep. save( file ) )
          return false;
    
       return true;
    };
    
    template< typename Real,
              typename Device,
              typename Index >
    bool tnlIdenticalGridGeometry< 2, Real, Device, Index > :: load( tnlFile& file )
    {
    
       if( ! this -> parametricStep. load( file ) )
          return false;
       this -> elementMeasure = this -> parametricStep. x() * this -> parametricStep. y();
    
       return true;
    };
    
    #endif /* TNLIDENTICALGRIDGEOMETRY_IMPL_H_ */