ViscousDrag.h

/***************************************************************************
 *   This file is part of OpenCAL: Open Computer Animation Library         *
 *   I created OpenCAL as my master's thesis Computer Science (multimedia) *
 *   at the tUL university in Diepenbeek, Belgium                          *
 *                                                                         *
 *   Copyright (C) 2003-2004 by Jeroen Dierckx                             *
 *   jeroen.dierckx@student.luc.ac.be                                      *
 *                                                                         *
 ***************************************************************************/

#ifndef OPENCAL_VISCOUSDRAG_H
#define OPENCAL_VISCOUSDRAG_H

// Includes
#include <OpenCAL/global.h>
#include <OpenCAL/Force.h>


namespace OpenCAL
{
    // Forward declarations
    class PhysicsSystem;

    class OPENCAL_API ViscousDrag: public Force
    {
    protected:
        // Member variables
        float m_drag;

    public:
        // Constructors and destructor
        ViscousDrag(PhysicsSystem *parent, float drag = 0.002f);
        virtual ~ViscousDrag();

        // Get functions
        float getDrag() const { return m_drag; }

        // Set functions
        void setDrag(float drag) { m_drag = drag; }

        // Other functions
        void execute(float seconds);
    };
}

#endif // OPENCAL_VISCOUSDRAG_H

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