GravityForce.cpp

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#include "GravityForce.h"
using namespace GraphicsLib;
using namespace ParticleSystems;
GravityForce::GravityForce(Vector *f, float a, float m) : Force(f,a) {
        magnitude = m;
}

GravityForce::~GravityForce() {
        delete force;
}

void GravityForce::applyForce(Vector *direction) {
        //if attenuation == 1 apply it fully
        if(attenuation) {
                (*direction).x += magnitude * (*force).x;
                (*direction).y += magnitude * (*force).y;
                (*direction).z += magnitude * (*force).z;
                (*direction).w += magnitude * (*force).w;
        } else {
                (*direction).x += magnitude * (attenuation *  RandomPosNum((*force).x));
                (*direction).y += magnitude * (attenuation *  RandomPosNum((*force).y));
                (*direction).z += magnitude * (attenuation *  RandomPosNum((*force).z));
                (*direction).w += magnitude * (attenuation *  RandomPosNum((*force).w));
        }
}

void GravityForce::applyForce(Vector *direction, float *mass) {
        //if attenuation == 1 apply it fully
        if(attenuation) {
                (*direction)+=magnitude *(*force)/(*mass);
        } else {
                (*direction).x += magnitude * (attenuation * RandomPosNum((*force).x)/(*mass));
                (*direction).y += magnitude * (attenuation * RandomPosNum((*force).y)/(*mass));
                (*direction).z += magnitude * (attenuation * RandomPosNum((*force).z)/(*mass));
                (*direction).w += magnitude * (attenuation * RandomPosNum((*force).w)/(*mass));
        }
}

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