owlps/owlps-positioning/referencepoint.cc

#include "referencepoint.hh"



float ReferencePoint::getSsSquareDistance(const vector<Measurement> &m)const
{
	unsigned int i, j;
	float ret = 0;
	bool found;
	vector<Measurement> ref_m = measurement_list;
	vector<Measurement> test_m = m;
	Measurement new_meas;

	new_meas.addSsValue(-95);

	/* Complete measurement vector with unexisting ap (from ref point) */
	for(i = 0 ; i < ref_m.size() ; i++)
	{
		found = false;
		for(j = 0 ; j < test_m.size() && !found ; j++)
			if(test_m[j].getMacAddr() == ref_m[i].getMacAddr())
				found = true;
		if(!found)
		{
			new_meas.setMacAddr(measurement_list[i].getMacAddr());
			test_m.push_back(new_meas);
		}
	}

	/* Now, complete ref. point meas. */
	for(i = 0 ; i < test_m.size() ; i++)
	{
		found = false;
		for(j = 0 ; j < ref_m.size() && !found ; j++)
			if(test_m[i].getMacAddr() == ref_m[j].getMacAddr())
				found = true;
		if(!found)
		{
			new_meas.setMacAddr(test_m[i].getMacAddr());
			ref_m.push_back(new_meas);
		}
	}

	/* Now, compute SS distance */
	for (i = 0 ; i < test_m.size() ; i++)
	{
		j = 0;
		found = false;
		while((j < ref_m.size())&&(found == false))
		{
			if(ref_m[j].getMacAddr() == test_m[i].getMacAddr())
			{
				found = true;
				ret += ref_m[j].getSsSquareDistance(test_m[i].getAverage());
			}
			j++;
		}
	}

	ref_m.clear();
	test_m.clear();

	return ret;
}



void ReferencePoint::addMeasurement(const string &mac_a, const int &value)
{
	unsigned int i;
	Measurement m;
	bool inserted = false;

	for (i = 0 ; i < measurement_list.size() ; i++)
		if(measurement_list[i].getMacAddr() == mac_a)
		{
			measurement_list[i].addSsValue(value);
			inserted = true;
			break;
		}
	if(inserted == false)
	{
		m.setMacAddr(mac_a);
		m.addSsValue(value);
		measurement_list.push_back(m);
	}
}



bool ReferencePoint::getPowerForAp(const string &ap_mac, float *p)const
{
	unsigned int i;
	string str;
	string macLowerCase;

	str=ap_mac;

	//Pour convertir les majuscules en miniscules
	const int length=str.length();
	for(int j=0; j < length; ++j)
	{
		str[j] = std::tolower(str[j]);
	}

	for (i = 0 ; i < measurement_list.size() ; i++)
		if(measurement_list[i].getMacAddr() == str)
		{
			*p = measurement_list[i].getAverage();
			return true;
		}
	return false;
}



ReferencePoint ReferencePoint::operator=(const ReferencePoint &rp)
{
	if(this == &rp)
		return *this;

	coordinates = rp.coordinates;
	measurement_list = rp.measurement_list;
	return *this;
}



ostream &operator<<(ostream &os, ReferencePoint &rp)
{
	unsigned int i;

	os << rp.coordinates << endl;
	if(rp.measurement_list.size() == 0)
		os << "No measurements" << endl;
	else
		for (i = 0 ; i < rp.measurement_list.size() ; i++)
			os << rp.measurement_list[i] << endl;

	return os;
}



/* Opérateur de cast en Point */
ReferencePoint::operator Point() const
{
	return coordinates ;
}