public FieldMapAnnotation(Field field)
{
coordinate = new CLLocationCoordinate2D(GeoHelper.CalculateCenter(field.BoundingCoordinates).Latitude, GeoHelper.CalculateCenter(field.BoundingCoordinates).Longitude);
Field = field;
title = field.Name;
subtitle = string.Format("Number of blocks: {0}", field.Blocks.Count);
}
/// <summary>
/// Initializes a new instance of the <see cref="TreeWatch.MapViewModel"/> class.
/// </summary>
public MapViewModel()
{
this.fieldHelper = FieldHelper.Instance;
this.fieldHelper.MapTapped += this.MapTapped;
this.fieldHelper.FieldSelected += this.FieldSelected;
this.fieldHelper.BlockSelected += this.BlockSelected;
this.Fields = new ObservableCollection<Field>(new DBQuery<Field>(App.Database).GetAll());
this.selectedField = new Field("Dummy", new List<Position>(), new List<Block>());
foreach (Field f in this.Fields)
{
var whc = GeoHelper.CalculateBoundingBox(f.BoundingCoordinates);
double rad = (whc.WidthInMeters > whc.HeightInMeters) ? whc.WidthInMeters : whc.HeightInMeters;
rad *= 0.5;
CrossGeofence.Current.StartMonitoring(new GeofenceCircularRegion(f.Name, whc.Center.Latitude, whc.Center.Longitude, rad)
{
NotifyOnStay = false,
StayedInThresholdDuration = TimeSpan.FromMinutes(10)
});
}
}
/// <summary>
/// Field selected event.
/// </summary>
/// <param name="field">Field that raises the selected event.</param>
public void FieldSelectedEvent(Field field)
{
if (this.FieldSelected != null)
{
FieldHelper.SelectedField = field;
this.FieldSelected(this, new FieldSelectedEventArgs(field));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="TreeWatch.FieldSelectedEventArgs"/> class.
/// </summary>
/// <param name="field">Field that through the event.</param>
public FieldSelectedEventArgs(Field field)
{
this.Field = field;
}
/// <summary>
/// Navigates to field.
/// </summary>
/// <param name="field">The field which information should be shown.</param>
public static void NavigateToField(Field field)
{
var navigationPage = (NavigationPage)Application.Current.MainPage;
var informationViewModel = new InformationViewModel(field);
navigationPage.PushAsync(new FieldInformationContentPage(informationViewModel));
}
/// <summary>
/// Gets the field from a KML file.
/// </summary>
/// <returns>The field.</returns>
/// <param name="kml">Kml file.</param>
public static Field GetField(string kml)
{
var resultField = new Field();
resultField.BoundingCoordinates = new List<Position>();
var xml = XDocument.Parse(kml);
var ns = xml.Root.Name.Namespace;
var cords = xml.Descendants(ns + "coordinates");
resultField.BoundingCoordinates = GetCoordinates(cords);
return resultField;
}