private void CreateOverlay()
{
// Create polygon builder and add polygon corners into it
PolygonBuilder builder = new PolygonBuilder(SpatialReferences.WebMercator);
builder.AddPoint(new MapPoint(-20e5, 20e5));
builder.AddPoint(new MapPoint(20e5, 20e5));
builder.AddPoint(new MapPoint(20e5, -20e5));
builder.AddPoint(new MapPoint(-20e5, -20e5));
// Get geometry from the builder
Polygon polygonGeometry = builder.ToGeometry();
// Create symbol for the polygon
SimpleFillSymbol polygonSymbol = new SimpleFillSymbol(
SimpleFillSymbolStyle.Solid,
System.Drawing.Color.Yellow,
null);
// Create new graphic
Graphic polygonGraphic = new Graphic(polygonGeometry, polygonSymbol);
// Create overlay to where graphics are shown
_polygonOverlay = new GraphicsOverlay();
_polygonOverlay.Graphics.Add(polygonGraphic);
// Add created overlay to the MapView
_myMapView.GraphicsOverlays.Add(_polygonOverlay);
}
private void CreateOverlay()
{
// Create polygon builder and add polygon corners into it.
PolygonBuilder builder = new PolygonBuilder(SpatialReferences.WebMercator);
builder.AddPoint(new MapPoint(-20e5, 20e5));
builder.AddPoint(new MapPoint(20e5, 20e5));
builder.AddPoint(new MapPoint(20e5, -20e5));
builder.AddPoint(new MapPoint(-20e5, -20e5));
// Get geometry from the builder.
Polygon polygonGeometry = builder.ToGeometry();
// Create symbol for the polygon.
SimpleFillSymbol polygonSymbol = new SimpleFillSymbol(
SimpleFillSymbolStyle.Solid,
System.Drawing.Color.Yellow,
null);
// Create new graphic.
Graphic polygonGraphic = new Graphic(polygonGeometry, polygonSymbol);
// Create overlay to where graphics are shown.
_polygonOverlay = new GraphicsOverlay();
_polygonOverlay.Graphics.Add(polygonGraphic);
// Add created overlay to the MapView.
_myMapView.GraphicsOverlays.Add(_polygonOverlay);
}
private Geometry polygonForStartingPoint(MapPoint mapPoint)
{
var polygon = new PolygonBuilder(SpatialReferences.Wgs84);
polygon.AddPoint(mapPoint.X, mapPoint.Y);
polygon.AddPoint(mapPoint.X, mapPoint.Y + squareSize);
polygon.AddPoint(mapPoint.X + squareSize, mapPoint.Y + squareSize);
polygon.AddPoint(mapPoint.X + squareSize, mapPoint.Y);
return(polygon.ToGeometry());
}
public void createPolygon(GraphicsOverlay myGraphicsOverlay)
{
var rec = new PolygonBuilder(SpatialReferences.Wgs84);
var lnSym = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, Colors.Red, 2);
rec.AddPoint(new MapPoint(xMin, yMin));
rec.AddPoint(new MapPoint(xMin, yMax));
rec.AddPoint(new MapPoint(xMax, yMax));
rec.AddPoint(new MapPoint(xMax, yMin));
myGraphicsOverlay.Graphics.Add(new Graphic(rec.ToGeometry(), lnSym));
_geom = rec.ToGeometry();
}
private void MySceneView_MouseDoubleClick(object sender, MouseEventArgs e)
{
if (type == "line" && mapPoint_list.Count != 0)
{
BorderContentText.Visibility = Visibility.Visible;
var boatPositions = new PolylineBuilder(SpatialReferences.Wgs84);
for (var i = 0; i < mapPoint_list.Count; i++)
{
boatPositions.AddPoint(new MapPoint(mapPoint_list[i].X, mapPoint_list[i].Y));
}
var boatRoute = boatPositions.ToGeometry();
_mapViewModel.Line(boatRoute, "line");
LineText.Text = "Line Length: " + GeometryEngine.LengthGeodetic(boatRoute).ToString("N2") + " meters";
}
else if (type == "area" && mapPoint_list.Count != 0)
{
BorderContentText.Visibility = Visibility.Visible;
var boatPositions = new PolygonBuilder(SpatialReferences.Wgs84);
for (var i = 0; i < mapPoint_list.Count; i++)
{
boatPositions.AddPoint(new MapPoint(mapPoint_list[i].X, mapPoint_list[i].Y));
}
var boatRoute = boatPositions.ToGeometry();
_mapViewModel.Area(boatRoute);
AreaText.Text = "Area Size: " + GeometryEngine.AreaGeodetic(boatRoute).ToString("N2") + " square meters";
}
mapPoint_list.Clear();
}
public void ZoomToEnvelope(double xMin, double yMin, double xMax, double yMax, MapView MyMapView)
{
var p1 = new PolygonBuilder(SpatialReferences.Wgs84);
var lnSym1 = new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, Colors.Yellow, 2);
p1.AddPoint(xMin, yMin);
p1.AddPoint(xMin, yMax);
p1.AddPoint(180, yMax);
p1.AddPoint(180, yMin);
var rec = new Graphic(p1.ToGeometry(), lnSym1);
graphicsOverlay2.Graphics.Add(rec);
Envelope envelope = new Envelope(xMin + 1.6, yMin, 180.0, yMax, SpatialReferences.Wgs84);
MyMapView.SetViewpointGeometryAsync(envelope);
}
private Polygon ToPolygon(Polyline line)
{
var builder = new PolygonBuilder(SpatialReferences.WebMercator);
if (line.Parts != null && line.Parts.Count > 0)
{
foreach (var point in line.Parts[0].GetPoints())
{
builder.AddPoint(point);
}
}
return(builder.ToGeometry());
}
public static async Task <Polygon> DrawPolygonAsync(MapView sceneView, System.Threading.CancellationToken cancellationToken)
{
var tcs = new TaskCompletionSource <Polygon>();
PolygonBuilder polygonBuilder = new PolygonBuilder(sceneView.SpatialReference);
var sketchlayer = CreateSketchLayer(sceneView);
Graphic polygonGraphic = new Graphic()
{
Symbol = DefaultFillSymbol
};
Graphic lineMoveGraphic = new Graphic()
{
Symbol = DefaultLineMoveSymbol
};
sketchlayer.Graphics.AddRange(new Graphic[] { polygonGraphic, lineMoveGraphic });
Action cleanupEvents = SetUpHandlers(sceneView,
(p) => //On mouse move move completion line around
{
if (p != null && polygonBuilder.Parts.Count > 0)
{
lineMoveGraphic.Geometry = new Polyline(new MapPoint[]
{
polygonBuilder.Parts[0].Last().EndPoint,
p,
polygonBuilder.Parts[0].First().StartPoint
});
}
},
(p) => //On tap add a vertex
{
if (p != null)
{
polygonBuilder.AddPoint(p);
if (polygonBuilder.Parts.Count > 0 && polygonBuilder.Parts[0].Count > 0)
{
polygonGraphic.Geometry = polygonBuilder.ToGeometry();
lineMoveGraphic.Geometry = null;
}
}
},
(p) => //View tapped - completes task and returns point
{
tcs.SetResult(polygonBuilder.ToGeometry());
});
Action cleanup = () =>
{
cleanupEvents();
sceneView.GraphicsOverlays.Remove(sketchlayer);
};
cancellationToken.Register(() => tcs.SetCanceled());
Polygon result = null;
try
{
result = await tcs.Task;
}
finally
{
cleanup();
}
return(result);
}
public static async Task<Polygon> DrawPolygonAsync(SceneView sceneView, System.Threading.CancellationToken cancellationToken)
{
var tcs = new TaskCompletionSource<Polygon>();
PolygonBuilder polygonBuilder = new PolygonBuilder(sceneView.SpatialReference);
var sketchlayer = CreateSketchLayer(sceneView);
Graphic polygonGraphic = new Graphic() { Symbol = DefaultFillSymbol };
Graphic lineMoveGraphic = new Graphic() { Symbol = DefaultLineMoveSymbol };
sketchlayer.Graphics.AddRange(new Graphic[] { polygonGraphic, lineMoveGraphic });
Action cleanupEvents = SetUpHandlers(sceneView,
(p) => //On mouse move move completion line around
{
if (p != null && polygonBuilder.Parts.Count > 0)
{
lineMoveGraphic.Geometry = new Polyline(new MapPoint[]
{
polygonBuilder.Parts[0].Last().EndPoint,
p,
polygonBuilder.Parts[0].First().StartPoint
});
}
},
(p) => //On tap add a vertex
{
if (p != null)
{
polygonBuilder.AddPoint(p);
if (polygonBuilder.Parts.Count > 0 && polygonBuilder.Parts[0].Count > 0)
{
polygonGraphic.Geometry = polygonBuilder.ToGeometry();
lineMoveGraphic.Geometry = null;
}
}
},
(p) => //View tapped - completes task and returns point
{
tcs.SetResult(polygonBuilder.ToGeometry());
});
Action cleanup = () =>
{
cleanupEvents();
sceneView.GraphicsOverlays.Remove(sketchlayer);
};
cancellationToken.Register(() => tcs.SetCanceled());
Polygon result = null;
try
{
result = await tcs.Task;
}
finally
{
cleanup();
}
return result;
}
