/// <summary>
/// Calculates the shortest line from the selected park to the stadium and displays it's length and shows the line on the map
/// </summary>
private void MapView_OnMapClick(object sender, TouchMapViewEventArgs e)
{
LayerOverlay layerOverlay = (LayerOverlay)mapView.Overlays["layerOverlay"];
ShapeFileFeatureLayer friscoParks = (ShapeFileFeatureLayer)layerOverlay.Layers["friscoParks"];
InMemoryFeatureLayer stadiumLayer = (InMemoryFeatureLayer)layerOverlay.Layers["stadiumLayer"];
InMemoryFeatureLayer shortestLineLayer = (InMemoryFeatureLayer)layerOverlay.Layers["shortestLineLayer"];
// Query the friscoParks layer to get the first feature closest to the map tap event
var park = friscoParks.QueryTools.GetFeaturesNearestTo(e.PointInWorldCoordinate, GeographyUnit.Meter, 1,
ReturningColumnsType.NoColumns).First();
// Get the stadium feature from the stadiumLayer
var stadium = stadiumLayer.InternalFeatures[0];
// Get the shortest line from the selected park to the stadium
var shortestLine = park.GetShape().GetShortestLineTo(stadium, GeographyUnit.Meter);
// Show the shortestLine on the map
shortestLineLayer.InternalFeatures.Clear();
shortestLineLayer.InternalFeatures.Add(new Feature(shortestLine));
layerOverlay.Refresh();
// Get the area of the first feature
var length = shortestLine.GetLength(GeographyUnit.Meter, DistanceUnit.Kilometer);
// Display the shortestLine's length in the distanceResult TextBox
distanceResult.Text = $"{length:f3} km";
}
/// <summary>
/// Perform the reverse geocode when the user taps on the map
/// </summary>
private void mapView_MapSingleTap(object sender, TouchMapViewEventArgs e)
{
// Set the coordinates in the UI
txtCoordinates.Text = string.Format("{0},{1}", e.PointInWorldCoordinate.Y.ToString("0.000000"), e.PointInWorldCoordinate.X.ToString("0.000000"));
// Run the reverse geocode
PerformReverseGeocode();
}
/// <summary>
/// Set the map to 'Polygon Drawing Mode' when the user taps on the map without panning
/// </summary>
private void MapView_OnMapClick(object sender, TouchMapViewEventArgs e)
{
if (!(mapView.TrackOverlay.TrackMode == TrackMode.Polygon))
{
// Set the drawing mode to 'Polygon'
mapView.TrackOverlay.TrackMode = TrackMode.Polygon;
}
}
/// <summary>
/// Set the map to 'Polygon Drawing Mode' when the user taps on the map without panning
/// </summary>
private void mapView_MapSingleTap(object sender, TouchMapViewEventArgs e)
{
if (mapView.TrackOverlay.TrackMode != TrackMode.Polygon)
{
// Set the drawing mode to 'Polygon'
mapView.TrackOverlay.TrackMode = TrackMode.Polygon;
}
}
/// <summary>
/// Pull data from the selected feature and display it when tapped
/// </summary>
private void MapView_OnMapSingleTap(object sender, TouchMapViewEventArgs e)
{
// Get the selected feature based on the map tap location
Feature selectedFeature = GetFeatureFromLocation(e.PointInWorldCoordinate);
// If a feature was selected, get the data from it and display it
if (selectedFeature != null)
{
DisplayFeatureInfo(selectedFeature);
}
}
private void mapView_MapClick(object sender, TouchMapViewEventArgs e)
{
// Get the selected feature based on the tapped location
Collection <Feature> selectedFeatures = GetFeaturesFromLocation(e.PointInWorldCoordinate);
// If a feature was selected, get the data from it and display it
if (selectedFeatures != null)
{
DisplayFeatureInfo(selectedFeatures);
}
}
/// <summary>
/// Map event that fires whenever the user taps on the map. Gets the closest feature from the tap event and calculates the center point
/// </summary>
private void MapView_OnMapClick(object sender, TouchMapViewEventArgs e)
{
LayerOverlay layerOverlay = (LayerOverlay)mapView.Overlays["layerOverlay"];
ShapeFileFeatureLayer censusHousing = (ShapeFileFeatureLayer)layerOverlay.Layers["censusHousing"];
// Query the censusHousing layer to get the first feature closest to the map tap event
var feature = censusHousing.QueryTools.GetFeaturesNearestTo(e.PointInWorldCoordinate, GeographyUnit.Meter, 1,
ReturningColumnsType.NoColumns).First();
CalculateCenterPoint(feature);
}
private async void mapView_MapSingleTap(object sender, TouchMapViewEventArgs e)
{
//I go to find the layer and then loop through all of the features and rotate them
var polygonLayer = (InMemoryFeatureLayer)mapView.FindFeatureLayer("PolygonLayer");
var features = polygonLayer.QueryTools.GetFeaturesContaining(e.PointInWorldCoordinate, ReturningColumnsType.AllColumns);
if (features.Count > 0)
{
await DisplayAlert("Alert", $"Feature: {features[0].Id} DataPoint1: {features[0].ColumnValues["DataPoint1"]}", "OK");
}
}
/// <summary>
/// Adds a marker to the simpleMarkerOverlay where the map tap event occurred.
/// </summary>
private void MapView_OnMapTouch(object sender, TouchMapViewEventArgs e)
{
SimpleMarkerOverlay simpleMarkerOverlay = (SimpleMarkerOverlay)mapView.Overlays["simpleMarkerOverlay"];
// Create a marker at the position the mouse was tapped
var marker = new Marker()
{
Position = e.PointInWorldCoordinate,
ImageSource = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Resources/AQUA.png"),
YOffset = -17
};
// Add the marker to the simpleMarkerOverlay and refresh the map
simpleMarkerOverlay.Markers.Add(marker);
simpleMarkerOverlay.Refresh();
}
/// <summary>
/// Event handler that finds the nearest feature and removes it from the layer
/// </summary>
private void MapView_SingleTap(object sender, TouchMapViewEventArgs e)
{
LayerOverlay layerOverlay = (LayerOverlay)mapView.Overlays["layerOverlay"];
InMemoryFeatureLayer featureLayer = (InMemoryFeatureLayer)layerOverlay.Layers["featureLayer"];
// Query the layer for the closest feature within 100 meters
Collection <Feature> closestFeatures = featureLayer.QueryTools.GetFeaturesNearestTo(e.PointInWorldCoordinate, GeographyUnit.Meter, 1, new Collection <string>(), 100, DistanceUnit.Meter);
// If a feature was found, remove it from the layer
if (closestFeatures.Count > 0)
{
featureLayer.InternalFeatures.Remove(closestFeatures[0]);
// Refresh the layerOverlay to show the results
layerOverlay.Refresh();
}
}
/// <summary>
/// Calculates the area of a feature selected on the map and displays it in the areaResult TextBox
/// </summary>
private void MapView_OnMapClick(object sender, TouchMapViewEventArgs e)
{
LayerOverlay layerOverlay = (LayerOverlay)mapView.Overlays["layerOverlay"];
ShapeFileFeatureLayer friscoParks = (ShapeFileFeatureLayer)layerOverlay.Layers["friscoParks"];
InMemoryFeatureLayer selectedAreaLayer = (InMemoryFeatureLayer)layerOverlay.Layers["selectedAreaLayer"];
// Query the friscoParks layer to get the first feature closest to the map tap event
var feature = friscoParks.QueryTools.GetFeaturesNearestTo(e.PointInWorldCoordinate, GeographyUnit.Meter, 1,
ReturningColumnsType.NoColumns).First();
// Show the selected feature on the map
selectedAreaLayer.InternalFeatures.Clear();
selectedAreaLayer.InternalFeatures.Add(feature);
layerOverlay.Refresh();
// Get the area of the first feature
var area = ((AreaBaseShape)feature.GetShape()).GetArea(GeographyUnit.Meter, AreaUnit.SquareKilometers);
// Display the selectedArea's area in the areaResult TextBox
areaResult.Text = $"{area:f3} sq km";
}
/// <summary>
/// Calculates the length of a line selected on the map and displays it in the lengthResult TextBox
/// </summary>
private void MapView_OnMapClick(object sender, TouchMapViewEventArgs e)
{
LayerOverlay layerOverlay = (LayerOverlay)mapView.Overlays["layerOverlay"];
ShapeFileFeatureLayer friscoTrails = (ShapeFileFeatureLayer)layerOverlay.Layers["friscoTrails"];
InMemoryFeatureLayer selectedLineLayer = (InMemoryFeatureLayer)layerOverlay.Layers["selectedLineLayer"];
// Query the friscoTrails layer to get the first feature closest to the map tap event
var feature = friscoTrails.QueryTools.GetFeaturesNearestTo(e.PointInWorldCoordinate, GeographyUnit.Meter, 1,
ReturningColumnsType.NoColumns).First();
// Show the selected feature on the map
selectedLineLayer.InternalFeatures.Clear();
selectedLineLayer.InternalFeatures.Add(feature);
layerOverlay.Refresh();
// Get the length of the first feature
var length = ((LineBaseShape)feature.GetShape()).GetLength(GeographyUnit.Meter, DistanceUnit.Kilometer);
// Display the selectedLine's length in the lengthResult TextBox
lengthResult.Text = $"{length:f3} km";
}
/// <summary>
/// Perform the spatial query when a new point is drawn
/// </summary>
private void MapView_OnMapTap(object sender, TouchMapViewEventArgs e)
{
GetFeaturesContaining(e.PointInWorldCoordinate);
}
private async void mapView_MapTap(object sender, TouchMapViewEventArgs e)
{
//Run the timezone info query
await GetTimeZoneInfo(e.PointInWorldCoordinate.X, e.PointInWorldCoordinate.Y);
}
/// <summary>
/// Perform the spatial query when a new point is drawn
/// </summary>
private void MapView_OnMapClick(object sender, TouchMapViewEventArgs e)
{
GetFeaturesWithinDistance(e.PointInWorldCoordinate);
}
