// Create a random graphic
private Graphic CreateRandomGraphic(int id)
{
var symbol = new CompositeSymbol();
symbol.Symbols.Add(new SimpleMarkerSymbol()
{
Style = SimpleMarkerStyle.Circle, Color = Colors.Red, Size = 16
});
symbol.Symbols.Add(new TextSymbol()
{
Text = id.ToString(),
Color = Colors.White,
VerticalTextAlignment = VerticalTextAlignment.Middle,
HorizontalTextAlignment = HorizontalTextAlignment.Center,
YOffset = -1
});
var graphic = new Graphic()
{
Geometry = GetRandomMapPoint(),
Symbol = symbol
};
graphic.Attributes["ID"] = id;
return(graphic);
}
private Graphic CreateStopGraphic(MapPoint location, int id)
{
var symbol = new CompositeSymbol();
symbol.Symbols.Add(new SimpleMarkerSymbol()
{
Style = SimpleMarkerStyle.Circle, Color = Colors.Blue, Size = 16
});
symbol.Symbols.Add(new TextSymbol()
{
Text = id.ToString(),
Color = Colors.White,
VerticalTextAlignment = VerticalTextAlignment.Middle,
HorizontalTextAlignment = HorizontalTextAlignment.Center,
YOffset = -1
});
var graphic = new Graphic()
{
Geometry = location,
Symbol = symbol
};
return(graphic);
}
private async void AddStop(Android.Graphics.PointF tappedPosition)
{
try
{
// Get the location on the map.
MapPoint tappedLocation = _myMapView.ScreenToLocation(tappedPosition);
// Name the stop by its number.
string stopName = $"{_stopsOverlay.Graphics.Count + 1}";
// Create a pushpin marker for the stop.
PictureMarkerSymbol pushpinMarker = await GetPictureMarker();
// Create the text symbol for labeling the stop.
TextSymbol stopSymbol = new TextSymbol(stopName, Color.White, 15,
HorizontalAlignment.Center, VerticalAlignment.Middle);
stopSymbol.OffsetY = 15;
// Create a combined symbol with the pushpin and the label.
CompositeSymbol combinedSymbol = new CompositeSymbol(new MarkerSymbol[] { pushpinMarker, stopSymbol });
// Create the graphic from the geometry and the symbology.
Graphic newStopGraphic = new Graphic(tappedLocation, combinedSymbol);
// Add the stop to the overlay.
_stopsOverlay.Graphics.Add(newStopGraphic);
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e);
ShowMessage("Couldn't select or add stop", "Couldn't select or add stop. See debug output for details.");
}
}
private Graphic CreateGraphic(Dictionary <string, object> attributes, double latitude, double longitude, string iconPath, int?countSymbol = 0)
{
CompositeSymbol compositeSymbol = new CompositeSymbol();
PictureMarkerSymbol pictureMarkerSymbol = new PictureMarkerSymbol();
TextSymbol textSymbol = new TextSymbol();
pictureMarkerSymbol.SetSourceAsync(new Uri(iconPath));
compositeSymbol.Symbols.Add(pictureMarkerSymbol);
if (countSymbol.HasValue && countSymbol != 0)
{
textSymbol.Text = countSymbol.ToString();
textSymbol.HorizontalTextAlignment = HorizontalTextAlignment.Center;
textSymbol.VerticalTextAlignment = VerticalTextAlignment.Middle;
textSymbol.Font.FontSize = 18;
textSymbol.YOffset = 7;
textSymbol.Color = (Color)ColorConverter.ConvertFromString("#d91e18");
compositeSymbol.Symbols.Add(textSymbol);
}
var graphics = new Graphic(new MapPoint(longitude, latitude, new SpatialReference(4326)), compositeSymbol);
foreach (KeyValuePair <string, object> item in attributes)
{
graphics.Attributes.Add(item.Key, item.Value);
}
graphics.ZIndex = MARKER_Z_INDEX;
return(graphics);
}
private void LoadEntireNmeaTrack(string filename)
{
var layer = mapView.GraphicsOverlays.First();
layer.Graphics.Clear();
if (currentNmeaFile == null)
return;
List<MapPoint> vertices = new List<MapPoint>();
using (var sr = System.IO.File.OpenText(filename))
{
while (!sr.EndOfStream)
{
var line = sr.ReadLine();
if (line != null && line.StartsWith("$"))
{
try
{
var msg = NmeaParser.Messages.NmeaMessage.Parse(line);
if (msg is NmeaParser.Messages.Rmc rmc)
{
if (!double.IsNaN(rmc.Longitude))
vertices.Add(new MapPoint(rmc.Longitude, rmc.Latitude));
}
}
catch { }
}
}
}
var pline = new Esri.ArcGISRuntime.Geometry.Polyline(vertices, SpatialReferences.Wgs84);
var linesymbol = new SimpleLineSymbol() { Width = 4, Color = System.Drawing.Color.CornflowerBlue };
var symbol = new CompositeSymbol();
symbol.Symbols.Add(linesymbol);
symbol.Symbols.Add(new SimpleMarkerSymbol() { Size = 5, Color = System.Drawing.Color.Black });
layer.Graphics.Add(new Graphic(pline, symbol));
}
/// <summary>
/// 获取聚合图形，用户地图展示
/// </summary>
/// <returns></returns>
public Graphic GetGraphic()
{
if (Graphics.Count == 1)
{
return(Graphics[0]);
}
var g = new Graphic {
Geometry = _center
};
var cs = new CompositeSymbol();
var sms = new SimpleMarkerSymbol
{
Outline = new SimpleLineSymbol(),
Size = _size
};
//聚合数量占比超过30%时，显示为红色
if (100.0 * Graphics.Count / _totalCount > 30)
{
sms.Color = System.Windows.Media.Color.FromArgb(100, 255, 0, 0);
}
else if (100.0 * Graphics.Count / _totalCount > 5)
{
sms.Color = System.Windows.Media.Color.FromArgb(100, 0, 0, 255);
}
else
{
sms.Color = System.Windows.Media.Color.FromArgb(100, 0, 255, 0);
}
sms.Outline.Color = System.Windows.Media.Color.FromArgb(255, 0, 0, 0);
sms.Outline.Width = 1;
cs.Symbols.Add(sms);
var ts = new TextSymbol
{
HorizontalTextAlignment = HorizontalTextAlignment.Center,
VerticalTextAlignment = VerticalTextAlignment.Baseline,
Font =
{
FontSize = 14,
FontWeight = SymbolFontWeight.Bold
},
Text = Graphics.Count.ToString()
};
cs.Symbols.Add(ts);
g.Symbol = cs;
return(g);
}
private Graphic CreateGraphic(double Latitude, double Longitude, string IconPath)
{
CompositeSymbol compositeSymbol = new CompositeSymbol();
PictureMarkerSymbol pictureMarkerSymbol = new PictureMarkerSymbol();
pictureMarkerSymbol.SetSourceAsync(new Uri(IconPath));
compositeSymbol.Symbols.Add(pictureMarkerSymbol);
var graphics = new Graphic(new MapPoint(Longitude, Latitude, new SpatialReference(4326)), compositeSymbol);
return(graphics);
}
public T CreatSymbol <T>() where T : Symbol
{
var symbol = new CompositeSymbol();
symbol.Symbols.Add(new SimpleMarkerSymbol {
Style = SimpleMarkerStyle.Circle, Color = Colors.Red, Size = 17
});
symbol.Symbols.Add(new TextSymbol
{
Text = "景", //中文支持有问题 解决方案：设置字体即可
Font = new SymbolFont("宋体", 15),
Color = Colors.White,
VerticalTextAlignment = VerticalTextAlignment.Middle,
HorizontalTextAlignment = HorizontalTextAlignment.Center,
YOffset = -1
});
return(symbol as T);
}
private Graphic CreateStopGraphic(MapPoint location, int id)
{
var symbol = new CompositeSymbol();
symbol.Symbols.Add(new SimpleMarkerSymbol() { Style = SimpleMarkerStyle.Circle, Color = Colors.Blue, Size = 16 });
symbol.Symbols.Add(new TextSymbol()
{
Text = id.ToString(),
Color = Colors.White,
VerticalTextAlignment = VerticalTextAlignment.Middle,
HorizontalTextAlignment = HorizontalTextAlignment.Center,
YOffset = -1
});
var graphic = new Graphic()
{
Geometry = location,
Symbol = symbol
};
return graphic;
}
private async void HandleMapTap(MapPoint mapLocation)
{
// Normalize geometry - important for geometries that will be sent to a server for processing.
mapLocation = (MapPoint)GeometryEngine.NormalizeCentralMeridian(mapLocation);
switch (_currentSampleState)
{
case SampleState.AddingBarriers:
// Buffer the tapped point to create a larger barrier.
Geometry bufferedGeometry = GeometryEngine.BufferGeodetic(mapLocation, 500, LinearUnits.Meters);
// Create the graphic to show the barrier.
Graphic barrierGraphic = new Graphic(bufferedGeometry, _barrierSymbol);
// Add the graphic to the overlay - this will cause it to appear on the map.
_barriersOverlay.Graphics.Add(barrierGraphic);
break;
case SampleState.AddingStops:
// Get the name of this stop.
string stopName = $"{_stopsOverlay.Graphics.Count + 1}";
// Create the marker to show underneath the stop number.
PictureMarkerSymbol pushpinMarker = await GetPictureMarker();
// Create the text symbol for showing the stop.
TextSymbol stopSymbol = new TextSymbol(stopName, System.Drawing.Color.White, 15,
HorizontalAlignment.Center, VerticalAlignment.Middle);
stopSymbol.OffsetY = 15;
CompositeSymbol combinedSymbol = new CompositeSymbol(new MarkerSymbol[] { pushpinMarker, stopSymbol });
// Create the graphic to show the stop.
Graphic stopGraphic = new Graphic(mapLocation, combinedSymbol);
// Add the graphic to the overlay - this will cause it to appear on the map.
_stopsOverlay.Graphics.Add(stopGraphic);
break;
}
}
// Create a random graphic
private Graphic CreateRandomGraphic(int id)
{
var symbol = new CompositeSymbol();
symbol.Symbols.Add(new SimpleMarkerSymbol() { Style = SimpleMarkerStyle.Circle, Color = Colors.Red, Size = 16 });
symbol.Symbols.Add(new TextSymbol()
{
Text = id.ToString(),
Color = Colors.White,
VerticalTextAlignment = VerticalTextAlignment.Middle,
HorizontalTextAlignment = HorizontalTextAlignment.Center,
YOffset = -1
});
var graphic = new Graphic()
{
Geometry = GetRandomMapPoint(),
Symbol = symbol
};
graphic.Attributes["ID"] = id;
return graphic;
}
public static CompositeSymbol CreateEntityCompositeSymbol(string label, bool isGrayed)
{
// Composite symbol is used to collate all the constituent parts
var compositeSymbol = new CompositeSymbol();
// Reversed triangle symbol
var triangleSymbol = CreatePointMarker(isGrayed);
// Map point marker
compositeSymbol.Symbols.Add(triangleSymbol);
// Entity label
double textHeight;
var entityLabelSymbol = CreateEntityLabelSymbol(label, triangleSymbol, isGrayed, out textHeight);
//compositeSymbol.Symbols.Add(entityLabelSymbol); // Don't add text symbols (we'll get to this later)
// Entity icon symbol
var entityIconSymbol = CreateEntityIconSymbol(entityLabelSymbol, textHeight);
compositeSymbol.Symbols.Add(entityIconSymbol);
return(compositeSymbol);
}
private void LoadEntireNmeaTrack(string filename)
{
var layer = mapView.Map.Layers.OfType<GraphicsLayer>().First();
layer.Graphics.Clear();
if (currentNmeaFile == null)
return;
List<MapPoint> vertices = new List<MapPoint>();
using (var sr = System.IO.File.OpenText(filename))
{
while (!sr.EndOfStream)
{
var line = sr.ReadLine();
if (line.StartsWith("$"))
{
try
{
var msg = NmeaParser.Nmea.NmeaMessage.Parse(line);
if (msg is NmeaParser.Nmea.Gps.Gprmc)
{
var rmc = (NmeaParser.Nmea.Gps.Gprmc)msg;
if (!double.IsNaN(rmc.Longitude))
vertices.Add(new MapPoint(rmc.Longitude, rmc.Latitude));
}
}
catch { }
}
}
}
var pline = new Esri.ArcGISRuntime.Geometry.Polyline(vertices, SpatialReferences.Wgs84);
var linesymbol = new SimpleLineSymbol() { Width = 4, Color = Colors.CornflowerBlue };
var symbol = new CompositeSymbol();
symbol.Symbols.Add(linesymbol);
symbol.Symbols.Add(new SimpleMarkerSymbol() { Size = 5, Color = Colors.Black });
Esri.ArcGISRuntime.Layers.Graphic g = new Esri.ArcGISRuntime.Layers.Graphic(pline, symbol);
layer.Graphics.Add(g);
}