//Called when creating a birdgroup to correct the boat's heading to the transect heading
public Azimuth NormalizedAzimuth(GpsPoint gpsData)
{
if (gpsData == null)
throw new ArgumentNullException("gpsData");
CoordinateCollection vertices = GetTwoClosestVertices(Shape, gpsData.Location);
Azimuth heading = GetAzimuthFromVertices(vertices);
//heading will be off by 180 degrees off if traveling from finish to start
heading = OrientateHeading(heading, gpsData.Bearing);
return heading;
}
private static GpsPoint FromFeature(Feature feature)
{
if (feature == null)
return null;
if (!feature.IsEditing)
feature.StartEditing();
var gpsPoint = new GpsPoint { Feature = feature };
gpsPoint.LoadAttributes();
GpsPoints[gpsPoint.Guid] = gpsPoint;
return gpsPoint;
}
internal static Observation FromGpsPoint(GpsPoint gpsPoint)
{
if (gpsPoint == null)
throw new ArgumentNullException("gpsPoint");
//May throw an exception, but should never return null
var observation = FromFeature(MobileUtilities.CreateNewFeature(FeatureSource));
observation.GpsPoint = gpsPoint;
return observation;
}