/// <summary>
/// Called by the native plugin when beacons are detected.
/// </summary>
/// <param name="beacons">A string representation of the detected beacons</param>
private void DidRangeBeaconsCallback(string beacons)
{
if (!string.IsNullOrEmpty(beacons))
{
List <EstimoteUnityBeacon> estimoteBeacons = new List <EstimoteUnityBeacon> ();
var beaconsJsonList = MiniJSON.Json.Deserialize(beacons) as List <object>;
foreach (object o in beaconsJsonList)
{
Dictionary <string, object> beaconJson = o as Dictionary <string, object>;
string uuid = (string)beaconJson ["UUID"];
int major = (int)((long)beaconJson ["Major"]);
int minor = (int)((long)beaconJson ["Minor"]);
int range = (int)((long)beaconJson ["BeaconRange"]);
int strength = (int)((long)beaconJson ["RSSI"]);
double accuracy = GetDouble(beaconJson ["Accuracy"]);
EstimoteUnityBeacon estimoteUnityBeacon = new EstimoteUnityBeacon(uuid, major, minor, range, strength, accuracy);
estimoteBeacons.Add(estimoteUnityBeacon);
}
if (OnDidRangeBeacons != null)
{
OnDidRangeBeacons.Invoke(estimoteBeacons);
}
}
else
{
if (OnDidRangeBeacons != null)
{
OnDidRangeBeacons.Invoke(null);
}
}
}
void FindClosestBeacon()
{
EstimoteUnityBeacon clo; //closest estimote beacon
double minVal; //min value
if (estimoteBeacons != null && estimoteBeacons.Count > 0)
{
clo = estimoteBeacons[0];
minVal = clo.RSSI;
for (int i = 1; i < estimoteBeacons.Count; i++)
{
if (estimoteBeacons[i].RSSI > minVal)
{
clo = estimoteBeacons[i];
minVal = clo.RSSI;
}
}
closestBeacon = clo;
return;
}
else
{
closestBeacon = null;
}
}
Vector2 Trilateration(EstimoteUnityBeacon b1, EstimoteUnityBeacon b2, EstimoteUnityBeacon b3)
{
Vector2 position = new Vector2();
//get the custom beacons to get data from Unity
CustomBeacon c1 = FindCustomBeacon(b1);
CustomBeacon c2 = FindCustomBeacon(b2);
CustomBeacon c3 = FindCustomBeacon(b3);
//get estimated distances from each estimoteBeacon
float d1 = GetBeaconDistance(b1.RSSI);
float d2 = GetBeaconDistance(b2.RSSI);
float d3 = GetBeaconDistance(b3.RSSI);
//temp variables set 1
float A = (c1.transform.position.x * c1.transform.position.x) + (c1.transform.position.y * c1.transform.position.y) - (d1 * d1);
float B = (c2.transform.position.x * c2.transform.position.x) + (c2.transform.position.y * c2.transform.position.y) - (d2 * d2);
float C = (c3.transform.position.x * c3.transform.position.x) + (c3.transform.position.y * c3.transform.position.y) - (d3 * d3);
//temp variable set 2
float x32 = c3.transform.position.x - c2.transform.position.x;
float x13 = c1.transform.position.x - c3.transform.position.x;
float x21 = c2.transform.position.x - c1.transform.position.x;
float y32 = c3.transform.position.y - c2.transform.position.y;
float y13 = c1.transform.position.y - c3.transform.position.y;
float y21 = c2.transform.position.y - c1.transform.position.y;
//use temp variabales in trilateration equation to get position
position.x = (A * y32) + (B * y13) + (C * y21);
position.x /= (2 * ((c1.transform.position.x * y32) + (c2.transform.position.x * y13) + (c3.transform.position.x * y21)));
position.y = (A * x32) + (B * x13) + (C * x21);
position.y /= (2 * ((c1.transform.position.y * y32) + (c2.transform.position.y * y13) + (c3.transform.position.y * y21)));
return(position);
}
/// <summary>
/// Gets cloud beacon details for the specified beacon.
/// </summary>
/// <param name="beacon">The beacon</param>
public void GetBeaconCloudDetails(EstimoteUnityBeacon beacon)
{
if (!EnableEstimoteCloud)
{
return;
}
GetBeaconCloudDetails(beacon.UUID, beacon.Major, beacon.Minor);
}
//Find the Unite representation of each beacon if it exists
CustomBeacon FindCustomBeacon(EstimoteUnityBeacon estimoteBeacon)
{
for (int i = 0; i < customBeacons.Length; i++)
{
if (customBeacons[i].major == estimoteBeacon.Major && customBeacons[i].minor == estimoteBeacon.Minor)
{
return(customBeacons[i]);
}
}
//none of the custom beacons have the estimote beacon major/minor
Debug.LogError("Found an estimote beacon that didnt have corresponding CustomBeacon... " + estimoteBeacon.Major + ": " + estimoteBeacon.Minor);
return(null);
}
//return true if found
public bool SelectBeacon(CustomBeacon _beacon)
{
DeselectBeacon();
for (int i = 0; i < estimoteBeacons.Count; i++)
{
if (estimoteBeacons[i].Major == _beacon.major && estimoteBeacons[i].Minor == _beacon.minor)
{
selectedBeacon = estimoteBeacons[i];
_beacon.SelectBeacon();
return(true);
}
}
return(false);
//selectedBeacon = null;
}
