#ifndef WIFIOPTIMIZERSTRUCTS_H
#define WIFIOPTIMIZERSTRUCTS_H

#include "../../../geo/Point3.h"

namespace WiFiOptimizer {

	/**
	 * one entry that is used during optimization:
	 * combine one RSSI measurement with the position the signal was measured at
	 */
	struct RSSIatPosition {

		/** real-world position (in meter) */
		const Point3 pos_m;

		/** measured signal strength (for one AP) */
		const float rssi;

		/** ctor */
		RSSIatPosition(const Point3 pos_m, const float rssi) : pos_m(pos_m), rssi(rssi) {;}

	};

	/**
	 * for statistics
	 * after optimiziaton
	 *
	 * denotes the difference [error] between one fingerprinted rssi
	 * at location (x,y,z) and the model estimation for this location
	 */
	struct ErrorAtPosition {

		/** real-world position (in meter) */
		const Point3 pos_m;

		/** measured signal strength (for one AP) */
		const float scan_rssi;

		/** final model's prediction */
		const float model_rssi;

		/** ctor */
		ErrorAtPosition(const Point3 pos_m, const float scan_rssi, const float model_rssi) : pos_m(pos_m), scan_rssi(scan_rssi), model_rssi(model_rssi)  {;}

		/** get the difference [error] between model-estimated-rssi and fingerprinted-rssi */
		float getError_db() const {
			return model_rssi - scan_rssi;
		}

	};

}

#endif // WIFIOPTIMIZERSTRUCTS_H