boost::this_thread(boost::chrono::milliseconds(50));

#include <boost/chrono.hpp>
Then I get an error "cannot

double diff;

if(isInside(curPosition.position))
{
//push geofences inside.
}
// Function to check whether the point is inside or outside the 
//polygon : concept of ray casting algorithm
bool DataProcessor::isInside(Point& p)
 {
    
    int i,j= this->points.size()-1;

 double Dataprocessor::calculateDistance(const Point& a, const Point& b) 
{
	double lat = (a.latitude + b.latitude) / 2 * 0.01745;
	double dLat = 111.3 * cos(lat) * (a.longitude -b.longitude);
	double dLng = 111.3 * (a.latitude - b.latitude);
    
	return sqrt(pow(dLat, 2) + pow(dLng, 2));
}

bool Polygon::isInside(const Point& p)
 {
    int i,j= this->points.size()-1;
    bool oddnodes=false;
    for(i=0;i<this->points.size();i++)
    {
        if((this->points[i].longitude < p.longitude &&this->points[j].longitude>=p.longitude || this->points[j].longitude< p.longitude &&this->points[i].longitude>=p.longitude)&&

class Polygon : public Shape {
public:

    Polygon(points_polygon p);
    Polygon();
    Polygon(const Polygon& orig);
    virtual ~Polygon();

    virtual bool isInside(const Point& p);

    std::vector<Point> points;
    int

void DataProcessor::run()
{
std::vector<Geofence> geofences= DBCon->getGeofences(deviceID);
/*Geofence is a struct in another file by the name DataObjects.h and geofences is a object

std::vector<Shape> shapes;


Geofence::Geofence(const Shape& shapes) 
{ 
  std::vector<Shape>::iterator shapeIt = shapes.begin();

  for (; shapeIt != shapes.end(); shapeIt++) {
    if (shapeIt->isInside(curPosition.position)) {
      geofences.push_back(Geofence(*shapeIt));

std::vector<Geofence> geofences;
std::vector<Shape> shapes;

std::vector<Shape>::iterator

class Polygon: public Shape
{
public:
virtual bool inside(Point& p)
private:
std::vector<Point&> points;
};

bool Polygon::inside(Point& p) 
{   
int i, j, c = 0; 
  int nvert = poly.size();   
 for (i = 0,