locate

type APInfo struct {
	BSSID string `json:"bssid"`
	RSSI  int64  `json:"rssi"` // Recieved Signal Strength Indicator
}

type APVector interface {
	GetVecVal(dimension int) int64
	GetLocation() (float64, float64)
}

type LocationInfo struct {
	X float64 `json:"x"`
	Y float64 `json:"y"`
}

type Locator interface {
	// Locate device by compute current apList1 with apList2 in database.
	Locate(APVector, []APVector) LocationInfo
}