CalculateOnIntegrationPoints

 virtual void CalculateOnIntegrationPoints(const Variable<double>& rVariable, Vector& Output, const ProcessInfo&  rCurrentProcessInfo){}

	  virtual void CalculateOnIntegrationPoints(const Variable<array_1d<double,3> >& rVariable, std::vector<  array_1d<double,3> >& Output, const ProcessInfo& rCurrentProcessInfo){}

	  virtual void CalculateOnIntegrationPoints(const Variable<Vector >& rVariable, std::vector< Vector >& Output,  const ProcessInfo& rCurrentProcessInfo){}

	  virtual void CalculateOnIntegrationPoints(const Variable<Matrix >& rVariable, std::vector< Matrix >& Output,  const ProcessInfo& rCurrentProcessInfo){}