// Use this for initialization
void Start()
{
if (m_state == GPS_STATE.READY)
{
m_state = GPS_STATE.LOCATING;
StartCoroutine(StartGPSService());
}
}
/// <summary>
/// Sets the current location.
/// </summary>
/// <param name="latitude">Current latitude in WGS84 decimal degrees.</param>
/// <param name="longitude">Current longitude in WGS84 decimal degrees.</param>
/// <param name="velocity">Current horizontal velocity in meters/second.</param>
/// <param name="error">Estimated horizontal positional error in meters (95% confidence level).</param>
/// <remarks>
/// When the TrackingState is packed into a byte array to be used as an RTT message valuse may be trncated as follows: -
/// Latitude/Longitude will be truncated to single presision floating point numbers.
/// The error values is packed into 6 bits in 3 meter increments giving a maximum value of 208 meters.
/// </remarks>
public void SetLocation(double latitude, double longitude, double velocity, uint error)
{
mLat = latitude;
mLong = longitude;
mVelocity = velocity;
mError = error;
mGPSState = (error > mAcceptableError) ? GPS_STATE.BAD_FIX : GPS_STATE.GOOD_FIX;
// log bad fixes
if (mGPSState == GPS_STATE.BAD_FIX)
{
CNXLog.ErrorFormat("GPS Precision {0}, {1}, {2}M", latitude, longitude, error * 3);
}
}
IEnumerator StartGPSService()
{
// Input.location 用于访问设备的位置属性（手持设备）, 静态的LocationService位置
// LocationService.isEnabledByUser 用户设置里的定位服务是否启用
if (!Input.location.isEnabledByUser)
{
m_state = GPS_STATE.NOT_ENABLE_BY_USER;
yield break;
}
// LocationService.Start() 启动位置服务的更新,最后一个位置坐标会被使用
Input.location.Start(100.0f, 100.0f);
int maxWait = 5;
while (Input.location.status == LocationServiceStatus.Initializing && maxWait > 0)
{
// 暂停协同程序的执行(1秒)
yield return(new WaitForSeconds(1));
maxWait--;
}
//超时
if (maxWait < 1)
{
m_state = GPS_STATE.TIMEOUT;
yield break;
}
//失败
if (Input.location.status == LocationServiceStatus.Failed)
{
m_state = GPS_STATE.FAIL;
yield break;
}
else
{
m_v2LatLng.x = Input.location.lastData.latitude;
m_v2LatLng.y = Input.location.lastData.longitude;
m_state = GPS_STATE.SUC;
yield break;
}
}
/// <summary>
/// 停止定位
/// </summary>
void StopGPS()
{
m_state = GPS_STATE.NONE;
Input.location.Stop();
}
/// <summary>
/// 启动定位
/// </summary>
public void StartGPS()
{
m_state = GPS_STATE.READY;
}
