/// <summary>
/// Returns an instance of <see cref="IRectangle"/> representing the bounding box of the specified GeoJSON <paramref name="collection"/>.
/// </summary>
/// <param name="collection">The feature collection.</param>
/// <returns>An instance of <see cref="IRectangle"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="collection"/> is <c>null</c>.</exception>
/// <exception cref="InvalidOperationException"><paramref name="collection"/> is empty.</exception>
public static IRectangle GetBoundingBox(GeoJsonFeatureCollection collection)
{
if (collection == null)
{
throw new ArgumentNullException(nameof(collection));
}
if (collection.Features.Count == 0)
{
throw new InvalidOperationException(nameof(collection));
}
List <IPoint> points = new List <IPoint>();
foreach (GeoJsonFeature feature in collection.Features)
{
IRectangle bbox = GetBoundingBox(feature);
if (bbox != null)
{
points.Add(bbox.SouthWest);
points.Add(bbox.NorthEast);
}
}
return(points.Count == 0 ? null : MapsUtils.GetBoundingBox(points));
}
public void ComputeOffset()
{
const double r = 6378137;
IPoint o = new Point(55.861858, 9.824622);
IPoint r1 = MapsUtils.ComputeOffset(o, 100, 0, r);
IPoint r2 = MapsUtils.ComputeOffset(o, 100, 45, r);
IPoint r3 = MapsUtils.ComputeOffset(o, 100, 90, r);
IPoint r4 = MapsUtils.ComputeOffset(o, 100, 135, r);
IPoint r5 = MapsUtils.ComputeOffset(o, 100, 180, r);
IPoint r6 = MapsUtils.ComputeOffset(o, 100, 225, r);
IPoint r7 = MapsUtils.ComputeOffset(o, 100, 270, r);
IPoint r8 = MapsUtils.ComputeOffset(o, 100, 315, r);
IPoint r9 = MapsUtils.ComputeOffset(o, 100, 360, r);
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r1, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r2, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r3, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r4, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r5, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r6, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r7, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r8, r).ToString("N4"));
Assert.AreEqual("100.0000", DistanceUtils.GetDistance(o, r9, r).ToString("N4"));
}
/// <summary>
/// Returns the bounding box of the specified collection of <paramref name="polygons"/>.
/// </summary>
/// <param name="polygons">A collection of polygons.</param>
/// <returns>An instance of <see cref="IRectangle"/> representing the bounding box.</returns>
public static IRectangle GetBoundingBox(this IEnumerable <IPolygon> polygons)
{
if (polygons == null)
{
throw new ArgumentNullException(nameof(polygons));
}
return(MapsUtils.GetBoundingBox(polygons.SelectMany(x => x.Outer)));
}
/// <inheritdoc />
public IRectangle GetBoundingBox()
{
if (_lineStrings.Count == 0)
{
throw new InvalidOperationException("This MultiLineString does not contain any LineString.");
}
return(MapsUtils.GetBoundingBox(_lineStrings.SelectMany(x => x.Points)));
}
/// <summary>
/// Returns a two-dimensional array of coordinates from the specified <paramref name="polygon"/>.
/// </summary>
/// <param name="polygon">The plogyon.</param>
/// <returns>A two-dimensional array of coordinates of <paramref name="polygon"/>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="polygon"/> is <c>null</c>.</exception>
public static WktPoint[][] ToWktPoints(IPolygon polygon)
{
if (polygon == null)
{
throw new ArgumentNullException(nameof(polygon));
}
return(ToWkt(MapsUtils.GetCoordinates(polygon)));
}
/// <summary>
/// Returns the area of the rectangle in square metres.
/// </summary>
/// <param name="radius">The radius of the spheroid.</param>
/// <returns>The area in square metres.</returns>
public double GetArea(double radius)
{
Point southWest = new Point(SouthWest.Latitude, SouthWest.Longitude);
Point northEast = new Point(NorthEast.Latitude, NorthEast.Longitude);
Point southEast = new Point(SouthWest.Latitude, NorthEast.Longitude);
Point northWest = new Point(NorthEast.Latitude, SouthWest.Longitude);
return(MapsUtils.GetArea(new IPoint[] { northEast, northWest, southWest, southEast }, radius));
}
/// <summary>
/// Returns whether the polygon contains the specified <paramref name="point"/>.
/// </summary>
/// <param name="point">The point.</param>
/// <returns><c>true</c> if the polygon contains <paramref name="point"/>; otheerwise <c>false</c>.</returns>
public bool Contains(IPoint point)
{
bool contains = MapsUtils.Contains(Outer, point);
if (contains == false)
{
return(false);
}
return(Inner.Length == 0 || Inner.Any(x => MapsUtils.Contains(x, point) == false));
}
/// <summary>
/// Converts the specified <paramref name="circle"/> to a polygon.
/// </summary>
/// <param name="circle">The circle to be converted.</param>
/// <param name="delta"></param>
/// <returns>A new instance of <see cref="IPolygon"/>.</returns>
public static IPolygon ToPolygon(this ICircle circle, float delta)
{
List <IPoint> path = new List <IPoint>();
for (float i = 0; i <= 360; i += delta)
{
path.Add(MapsUtils.ComputeOffset(circle.Center, circle.Radius, i));
}
return(new Polygon(path));
}
public async System.Threading.Tasks.Task iniciaAsync(MotoristaRetornoInfo info)
{
if (MapsUtils.IsLocationAvailable())
{
var ret = await CrossGeolocator.Current.GetLastKnownLocationAsync();
apresentaInfo(info, new Position(ret.Latitude, ret.Longitude));
if (CrossGeolocator.Current.IsListening)
{
await CrossGeolocator.Current.StopListeningAsync();
}
await CrossGeolocator.Current.StartListeningAsync(new TimeSpan(5000), 20);
CrossGeolocator.Current.PositionChanged += testeAsync;
}
}
private void inicializarComponente()
{
_EnviarButton = new Button
{
HorizontalOptions = LayoutOptions.Fill,
VerticalOptions = LayoutOptions.Start,
Margin = new Thickness(8, 0),
Style = Estilo.Current[Estilo.BTN_PRINCIPAL],
Text = "Procurar Motorista"
};
_EnviarButton.Clicked += async(sender, e) => {
UserDialogs.Instance.ShowLoading("Enviando...");
_Info.Situacao = FreteSituacaoEnum.ProcurandoMotorista;
await FreteFactory.create().alterar(_Info);
UserDialogs.Instance.HideLoading();
Navigation.PopToRootAsync();
};
_CustomMap = new CustomMap
{
MapType = MapType.Street,
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.Fill
};
var pontos = MapsUtils.DecodePolyline(_Info.Polyline);
foreach (var ponto in pontos)
{
_CustomMap.RouteCoordinates.Add(ponto);
}
foreach (var pin in _Info.Locais)
{
_CustomMap.Pins.Add(new Pin()
{
Position = new Position(pin.Latitude, pin.Longitude),
Label = getTextItem(pin.Tipo)
});
}
var aux = _Info.Locais.First();
var midleLat = pontos.Average(x => x.Latitude);
var midleLon = pontos.Average((x => x.Longitude));
var degressLat = Math.Abs(pontos.Max(x => x.Latitude) - pontos.Min(x => x.Latitude));
var degressLon = Math.Abs(pontos.Max(x => x.Longitude) - pontos.Min(x => x.Longitude));
_CustomMap.MoveToRegion(new MapSpan(new Position(midleLat, midleLon), degressLat + (degressLat * 0.2), degressLon + (degressLon * 0.2)));
}
/// <summary>
/// Returns the area of the specified <paramref name="polygon"/> measured in sqaure metres.
/// </summary>
/// <param name="polygon">The polygon.</param>
/// <returns>A <see cref="double"/> representing the area in square metres.</returns>
/// <remarks>For this method to work, it is assumed that coordinates are specified using the
/// <strong>WGS 84</strong> coordinate system (eg. used by the Global Positioning System).</remarks>
/// <see>
/// <cref>https://en.wikipedia.org/wiki/World_Geodetic_System#WGS84</cref>
/// </see>
/// <see>
/// <cref>https://en.wikipedia.org/wiki/Global_Positioning_System</cref>
/// </see>
/// <exception cref="ArgumentNullException"><paramref name="polygon"/> is <c>null</c>.</exception>
public static double GetArea(WktPolygon polygon)
{
if (polygon == null)
{
throw new ArgumentNullException(nameof(polygon));
}
// Get the overall area from the outer points
double area = MapsUtils.GetArea(polygon.Outer.Select(x => new Point(x.Y, x.X)));
// Substract the area of the inner points
foreach (WktPoint[] inner in polygon.Inner)
{
area -= MapsUtils.GetArea(inner.Select(x => new Point(x.Y, x.X)));
}
return(area);
}
public async Task <MotoristaRetornoInfo> listarPedidosAsync()
{
try{
if (MapsUtils.IsLocationAvailable() && pegarAtual() != null)
{
var args = new List <object>();
var posicao = await CrossGeolocator.Current.GetLastKnownLocationAsync();
args.Add(new
{
id_motorista = pegarAtual().Id,
latitude = posicao.Latitude,
longitude = posicao.Longitude,
cod_disponibilidade = 1
});
return(await queryPut <MotoristaRetornoInfo>(GlobalUtils.URLAplicacao + "/api/motorista/atualizar", args.ToArray()));
}
return(null);
}
catch (Exception e) {
throw e;
}
}
public bool IsLocationAvailable()
{
return(MapsUtils.IsLocationAvailable());
}
/// <summary>
/// Returns a new rectangle representing the bounding box of this multi polygon.
/// </summary>
/// <returns>An instance of <see cref="IRectangle"/>.</returns>
public IRectangle GetBoundingBox()
{
return(MapsUtils.GetBoundingBox(Polygons.SelectMany(x => x.Outer)));
}
/// <summary>
/// Returns an instance of <see cref="IRectangle"/> representing the bounding box of the polygon.
/// </summary>
/// <returns>An instance of <see cref="IRectangle"/>.</returns>
public IRectangle GetBoundingBox()
{
return(MapsUtils.GetBoundingBox(Outer));
}
/// <summary>
/// Returns the circumference of the polygon in metres.
/// </summary>
/// <returns>The circumference in metres.</returns>
public double GetCircumference()
{
return(MapsUtils.GetCircumference(Outer));
}
/// <summary>
/// Returns the area of the polygon in square metres.
/// </summary>
/// <returns>The area in square metres.</returns>
public double GetArea()
{
return(MapsUtils.GetArea(Outer));
}
/// <summary>
/// Returns a new rectangle representing the bounding box of this line string.
/// </summary>
/// <returns>An instance of <see cref="IRectangle"/>.</returns>
public IRectangle GetBoundingBox()
{
return(MapsUtils.GetBoundingBox(Points));
}
/// <summary>
/// Returns a new point representing the center of this line string.
/// </summary>
/// <returns>An instance of <see cref="IPoint"/>.</returns>
public IPoint GetCenter()
{
return(MapsUtils.GetCenter(this));
}
/// <summary>
/// Returns the total length of this line string.
/// </summary>
/// <returns>The total length in metres.</returns>
public double GetLength()
{
return(MapsUtils.GetLength(_points));
}
