MassSpringSystem.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_MASSSPRINGSYSTEM_H
#define OPENCAL_MASSSPRINGSYSTEM_H

// Includes
#include <OpenCAL/global.h>
#include <OpenCAL/PhysicsSystem.h>
#include <OpenCAL/TriangleMesh.h>

namespace OpenCAL
{
    // Forward declarations
    class PointMass;
    class Spring;


    class OPENCAL_API MassSpringSystem: public PhysicsSystem
    {
    protected:
        // Member variables
        TriangleMesh m_surface;

    public:
        // Constructors and destructor
        MassSpringSystem(System *parent);
        virtual ~MassSpringSystem();

        // Get functions
        PointMass *getPoint(unsigned int i) { return (PointMass *) m_objects[i]; }
        const PointMass *getPoint(unsigned int i) const { return (const PointMass *) m_objects[i]; }
        Spring *getSpring(unsigned int i) { return (Spring *) m_actors[i]; }
        const Spring *getSpring(unsigned int i) const { return (const Spring *) m_actors[i]; }
        const TriangleMesh &getSurface() const { return m_surface; }
        TriangleMesh *getSurfaceP() { return &m_surface; }

        // Set functions
        void setMass(float mass);
        void setMassEach(float mass);
        void setStiffness(float stiffness);
        void setDamping(float damping);

        // Step functions
        virtual void step(float deltaSeconds);

        // Other functions
        virtual void initialize();
        virtual void render();
        virtual void renderPicking();
/*
#ifdef USE_OPENGL
        virtual void drawPickGL();
#endif // USE_OPENGL
*/

    protected:
        // Protected functions
        void integrate(float deltaSeconds);
    };
}

#endif // OPENCAL_MASSSPRINGSYSTEM_H

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