SundanceL2Projector.hpp

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#ifndef SUNDANCE_L2PROJECTOR_H
#define SUNDANCE_L2PROJECTOR_H

#include "SundanceDefs.hpp"
#include "SundanceMesh.hpp"
#include "SundanceExpr.hpp"
#include "SundanceDiscreteFunction.hpp"
#include "SundanceDiscreteSpace.hpp"
#include "SundanceLinearProblem.hpp"
#include "SundanceCoordinateSystem.hpp"
#include "PlayaLinearOperatorDecl.hpp"
#include "PlayaLinearSolverDecl.hpp"
#include "PlayaVectorDecl.hpp"
#include "PlayaVectorType.hpp"

namespace Sundance
{
using namespace Playa;
using namespace Teuchos;

/**
 * L2Projector projects an expression onto a DiscreteSpace. 
 */
class L2Projector
{
public:
  /** */
  L2Projector(){;}
  /** */
  L2Projector(const DiscreteSpace& space, 
    const Expr& expr);
  /** */
  L2Projector(const DiscreteSpace& space, 
    const Expr& expr,
    const QuadratureFamily& quad);
  /** */
  L2Projector(const DiscreteSpace& space, 
    const Expr& expr,
    const LinearSolver<double>& solver);
  /** */
  L2Projector(const DiscreteSpace& space, 
    const Expr& expr,
    const LinearSolver<double>& solver,
    const QuadratureFamily& quad);
  /** */
  L2Projector(const DiscreteSpace& space, 
    const CoordinateSystem& coordSys,
    const Expr& expr);
  /** */
  L2Projector(const DiscreteSpace& space, 
    const CoordinateSystem& coordSys,
    const Expr& expr,
    const LinearSolver<double>& solver);

  /** */
  Expr project() const {return prob_.solve(solver_);}

  /** */
  const LinearProblem& prob() const {return prob_;}

private:

  void init(const DiscreteSpace& space,       
    const CoordinateSystem& coordSys,
    const Expr& expr,
    const LinearSolver<double>& solver,
    const QuadratureFamily& quad);
    
  LinearProblem prob_;

  LinearSolver<double> solver_;
    
};
}


#endif