linear_drag_force.h

#ifndef DRAG_FORCE_GENERATOR_H
#define DRAG_FORCE_GENERATOR_H

#include <Eigen/Core>
#include "vector3G.h"
#include <memory>
#include "physics_entity.h"

class LinearDragForceGenerator
{
    private:
        GLfloat m_beta; // drag coefficent

    public:

        LinearDragForceGenerator();

        LinearDragForceGenerator(GLfloat beta);

        GLfloat GetDragCoeff();        

        void SetDragCoeff(GLfloat beta);

        void AccumulateForce(std::shared_ptr<PhysicsEntity> entity, Vector3Gf &F) const;

        void AccumulatedFdv(const std::shared_ptr<PhysicsEntity> entity, Eigen::Matrix<GLfloat,3,3> &dF) const;


};

#endif