sah.h

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/* $Header: /var/cvs/mbdyn/mbdyn/mbdyn-1.0/mbdyn/base/sah.h,v 1.19 2017/01/12 14:46:10 masarati Exp $ */
/* 
 * MBDyn (C) is a multibody analysis code. 
 * http://www.mbdyn.org
 *
 * Copyright (C) 1996-2017
 *
 * Pierangelo Masarati  <masarati@aero.polimi.it>
 * Paolo Mantegazza     <mantegazza@aero.polimi.it>
 *
 * Dipartimento di Ingegneria Aerospaziale - Politecnico di Milano
 * via La Masa, 34 - 20156 Milano, Italy
 * http://www.aero.polimi.it
 *
 * Changing this copyright notice is forbidden.
 *
 * 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 (version 2 of the License).
 * 
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef SAH_H
#define SAH_H

#include <node.h>
#include <drive.h>

/* SampleAndHold - begin */

class SampleAndHold : public ParameterNode {
protected:
        const ScalarNode        *pNode;
        const DriveOwner        Time;
        const doublereal        dSamplePeriod;
        mutable doublereal      dSampleTime;
 
public:
        SampleAndHold(unsigned int uL,
                        const DofOwner* pDO,
                        const ScalarNode *pN,
                        DriveCaller *pDC,
                        const doublereal &dSP,
                        flag fOut);
        virtual ~SampleAndHold(void);

        /* Contributo del nodo al file di restart */
        virtual std::ostream& Restart(std::ostream& out) const;

        /* inizializza i dati */
        virtual void SetValue(DataManager *pDM,
                        VectorHandler& X, VectorHandler& XP,
                        SimulationEntity::Hints *ph = 0);

        /* Aggiorna i valori interni */   
        virtual void Update(const class VectorHandler&,
                        const class VectorHandler&);
};

/* SampleAndHold - end */

#endif /* SAH_H */