#ifndef CONSTANT2DFUNCTION 
#define CONSTANT2DFUNCTION 1
/**
 *  
 *  constant 2d  Function 
 *
 * 
 */

# include "FML/Function.h"

# include <math.h>

class Constant2DFunction : public Anaphe::FML::Function
      {
      public:

	
	
	Constant2DFunction();
	
	// methods need to be implemented by the user 

	double value(const std::vector<double>& x) const;
	//const std::vector<double>& gradient(const std::vector<double>& x)  const;  
	//const std::vector<double>& parameterGradient(const std::vector<double>& x) const;
 	
	/// runtime metatype identifier: "
	static std::string functionTypename();

	double p0() const; 
	
	double area() const; 


      private:

	mutable bool m_first; 

      };
   

      inline double Constant2DFunction::p0() const 
      { return parameters()[0];  }

  
# endif