flockanimatortornado.h

#ifndef FLOCKANIMATORTORNADO_H
#define FLOCKANIMATORTORNADO_H

#include "irrlicht.h"

class Boid;


class FlockAnimatorTornado : public irr::scene::ISceneNodeAnimator
{
    public:

        FlockAnimatorTornado(irr::IrrlichtDevice* d);

        ~FlockAnimatorTornado();

        void animateNode(irr::scene::ISceneNode* node, irr::u32 timeMs);

    protected:

    private:

        irr::f32 getWindStrength(irr::f32 altitude);
        irr::core::vector3df getWindVelocity(irr::core::vector3df location, irr::u32 timeMs);
        irr::core::vector3df getForce(Boid* b, irr::u32 timeMs);

        irr::IrrlichtDevice*    device;
        irr::f32                mass;                       // mass of particle, kilograms
        irr::f32                halfRhoSref;                // 0.5 * fluid density (rho) * reference area (Sref)
        irr::f32                pi;                                             // PI
        irr::f32                oneOverTwoPi;                   // inverse of 2*pi.
        irr::f32                fluidDensity;                           // Air density around sea level, kg/meters cubed
        irr::f32                gravitationalAccel;             // rate of gravitational acceleration, in Y direction, meters/second-squared
        irr::f32                strength_0;                                     // particle strength at altitude = 0 meters
        irr::f32                strength_500;                           // particle strength at altitude = 500 meters
        irr::core::vector3df    stormCenter;                            // 3D center of storm.
};

#endif // FLOCKANIMATORTORNADO_H

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