private void AndroidMapMapSingleTap(object sender, Android.Views.MotionEvent e)
{
PointF location = new PointF(e.GetX(), e.GetY());
PointShape position = ExtentHelper.ToWorldCoordinate(androidMap.CurrentExtent, location.X,
location.Y, androidMap.Width, androidMap.Height);
LayerOverlay overlay = androidMap.Overlays["RoadOverlay"] as LayerOverlay;
FeatureLayer roadLayer = overlay.Layers["TXlkaA40"] as FeatureLayer;
LayerOverlay highlightOverlay = androidMap.Overlays["HighlightOverlay"] as LayerOverlay;
InMemoryFeatureLayer highlightLayer = (InMemoryFeatureLayer)highlightOverlay.Layers["HighlightLayer"];
roadLayer.Open();
Collection <Feature> selectedFeatures = roadLayer.QueryTools.GetFeaturesNearestTo(position, GeographyUnit.DecimalDegree, 1, new string[1] {
"fename"
});
roadLayer.Close();
if (selectedFeatures.Count > 0)
{
LineBaseShape lineShape = (LineBaseShape)selectedFeatures[0].GetShape();
highlightLayer.Open();
highlightLayer.InternalFeatures.Clear();
highlightLayer.InternalFeatures.Add(new Feature(lineShape));
highlightLayer.Close();
double length = lineShape.GetLength(GeographyUnit.DecimalDegree, DistanceUnit.Meter);
string lengthMessage = string.Format(CultureInfo.InvariantCulture, "{0} has a length of {1:F2} meters.", selectedFeatures[0].ColumnValues["fename"].Trim(), length);
messageLabel.Text = lengthMessage;
highlightOverlay.Refresh();
}
}
protected override Road GetRoadByIdCore(string roadId)
{
Feature feature = featureSource.GetFeatureById(roadId, ReturningColumnsType.NoColumns);
LineBaseShape sourceShape = (LineBaseShape)feature.GetShape();
Collection <LineShape> lines = ConvertLineBaseShapeToLines(sourceShape);
List <string> adjacentIDs = new List <string>();
foreach (LineShape line in lines)
{
Collection <Feature> features = featureSource.GetFeaturesInsideBoundingBox(line.GetBoundingBox(), ReturningColumnsType.NoColumns);
foreach (Feature tempFeature in features)
{
BaseShape tempShape = tempFeature.GetShape();
if (feature.Id != tempFeature.Id && line.Intersects(tempShape))
{
adjacentIDs.Add(tempFeature.Id);
}
}
}
//adjacentIDs.Sort();
PointShape center = sourceShape.GetCenterPoint();
float centerX = (float)center.X;
float centerY = (float)center.Y;
float length = (float)sourceShape.GetLength(GeographyUnit.Meter, DistanceUnit.Meter);
Road road = new Road(roadId, RoadType.LocalRoad, length, adjacentIDs, centerX, centerY, roadId);
return(road);
}
public string GetLengthOfFeature(Map map, GeoCollection <object> args)
{
PointShape point = new PointShape(Convert.ToDouble(args[0]), Convert.ToDouble(args[1]));
FeatureLayer worldLayer = (FeatureLayer)map.StaticOverlay.Layers["RoadLayer"];
InMemoryFeatureLayer streetLayer = (InMemoryFeatureLayer)map.DynamicOverlay.Layers["StreetLayer"];
streetLayer.InternalFeatures.Clear();
worldLayer.Open();
Collection <Feature> selectedFeatures = worldLayer.QueryTools.GetFeaturesNearestTo(point, GeographyUnit.DecimalDegree, 1, new string[1] {
"FENAME"
});
worldLayer.Close();
string popupContentHtml = string.Empty;
if (selectedFeatures.Count > 0)
{
LineBaseShape lineShape = (LineBaseShape)selectedFeatures[0].GetShape();
double length = lineShape.GetLength(GeographyUnit.DecimalDegree, DistanceUnit.Meter);
string contentHtml = "<span style='color:red'>{0}</span> has a length of <span style='color:red'>{1:N0}</span> meters.";
string information = string.Format(contentHtml, selectedFeatures[0].ColumnValues["FENAME"].Trim(), length);
popupContentHtml = "<div style='font-size:10px; font-family:verdana; padding:4px;'>" + information + "</div>";
streetLayer.InternalFeatures.Add("Street", new Feature(lineShape));
}
return(popupContentHtml);
}
private void winformsMap1_MapClick(object sender, MapClickWinformsMapEventArgs e)
{
FeatureLayer worldLayer = winformsMap1.FindFeatureLayer("RoadLayer");
// Find the road the user clicked on.
worldLayer.Open();
Collection <Feature> selectedFeatures = worldLayer.QueryTools.GetFeaturesNearestTo(e.WorldLocation, GeographyUnit.DecimalDegree, 1, new string[1] {
"FENAME"
});
worldLayer.Close();
//Determine the length of the road.
if (selectedFeatures.Count > 0)
{
LineBaseShape lineShape = (LineBaseShape)selectedFeatures[0].GetShape();
double length = lineShape.GetLength(GeographyUnit.DecimalDegree, DistanceUnit.Meter);
MessageBox.Show(string.Format(CultureInfo.InvariantCulture, "{0} has a length of {1:F2} meters.", selectedFeatures[0].ColumnValues["FENAME"].Trim(), length), "Length", MessageBoxButtons.OK, MessageBoxIcon.Information, MessageBoxDefaultButton.Button1, (MessageBoxOptions)0);
}
}
private void btnCalculate_Click(object sender, RoutedEventArgs e)
{
//Get a reference to the results MapShapeLayer and clear it so we can display our new results.
MapShapeLayer results = (MapShapeLayer)((LayerOverlay)mapView.Overlays["layerOverlay"]).Layers["Results"];
results.MapShapes.Clear();
//Get a reference to the test data layer.
InMemoryFeatureLayer testDataLayer = (InMemoryFeatureLayer)((LayerOverlay)mapView.Overlays["layerOverlay"]).Layers["TestData"];
//Check to see if the test data has been edited.
if (mapView.EditOverlay.EditShapesLayer.InternalFeatures.Count > 0)
{
//Loop through the edited test data and update the test data layer.
testDataLayer.EditTools.BeginTransaction();
foreach (Feature feature in mapView.EditOverlay.EditShapesLayer.InternalFeatures)
{
testDataLayer.EditTools.Update(feature.CloneDeep());
}
testDataLayer.EditTools.CommitTransaction();
//Clear out the EditOverlay since we are done editing.
mapView.EditOverlay.EditShapesLayer.InternalFeatures.Clear();
//Since we are done editing, turn visibility back on the for the layer overlay so we can see our test data again.
mapView.Overlays["layerOverlay"].IsVisible = true;
}
//Get the test point feature from the test data layer.
Feature testPointFeature = testDataLayer.QueryTools.GetFeaturesByColumnValue("Name", "TestPoint", ReturningColumnsType.AllColumns)[0];
//Get the test line feature from the test data layer.
Feature testLineFeature = testDataLayer.QueryTools.GetFeaturesByColumnValue("Name", "TestLine", ReturningColumnsType.AllColumns)[0];
//Take the test line feature and create a line shape so we can use line-specific APIs for finding the shortest line and line-on-line.
LineShape testLine = new MultilineShape(testLineFeature.GetWellKnownText()).Lines[0];
//Calculate the shortest line between our test line and test point.
LineShape shortestLineResult = testLine.GetShortestLineTo(testPointFeature.GetShape(), GeographyUnit.Meter).Lines[0];
//Take the result and create a MapShape so we can display the shortest line on the map in a blue color.
MapShape shortestLine = new MapShape(new Feature(shortestLineResult));
shortestLine.ZoomLevels.ZoomLevel01.DefaultLineStyle = LineStyle.CreateSimpleLineStyle(GeoColors.Blue, 4, false);
shortestLine.ZoomLevels.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
results.MapShapes.Add("ShortestLine", shortestLine);
string message = "Length of Blue Line is: " + shortestLineResult.GetLength(GeographyUnit.Meter, DistanceUnit.Kilometer).ToString() + " KM" + '\n';
//Split the test line from the left side based on where the shortest line touches it.
LineBaseShape leftSideOfLineResult = testLine.GetLineOnALine(new PointShape(testLine.Vertices[0]), new PointShape(shortestLineResult.Vertices[0]));
//Make sure the split was valid and the closest point wasn't at the beginning or end of the line.
if (leftSideOfLineResult.Validate(ShapeValidationMode.Simple).IsValid)
{
MapShape leftSideOfLine = new MapShape(new Feature(leftSideOfLineResult));
leftSideOfLine.ZoomLevels.ZoomLevel01.DefaultLineStyle = LineStyle.CreateSimpleLineStyle(GeoColors.Green, 2, false);
leftSideOfLine.ZoomLevels.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
results.MapShapes.Add("LeftSideofLine", leftSideOfLine);
message += "Length of Green Line is: " + leftSideOfLineResult.GetLength(GeographyUnit.Meter, DistanceUnit.Kilometer).ToString() + " KM" + '\n';
}
//Split the test line from the right side based on where the shortest line touches it.
LineBaseShape rightSideOfLineResult = testLine.GetLineOnALine(new PointShape(shortestLineResult.Vertices[0]), new PointShape(testLine.Vertices[testLine.Vertices.Count - 1]));
//Make sure the split was valid and the closest point wasn't at the beginning or end of the line.
if (rightSideOfLineResult.Validate(ShapeValidationMode.Simple).IsValid)
{
MapShape rightSideOfLine = new MapShape(new Feature(rightSideOfLineResult));
rightSideOfLine.ZoomLevels.ZoomLevel01.DefaultLineStyle = LineStyle.CreateSimpleLineStyle(GeoColors.Yellow, 2, false);
rightSideOfLine.ZoomLevels.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
results.MapShapes.Add("RightSideofLine", rightSideOfLine);
message += "Length of Yellow Line is: " + rightSideOfLineResult.GetLength(GeographyUnit.Meter, DistanceUnit.Kilometer).ToString() + " KM" + '\n';
}
//Display the length of each line in kilometers.
message += "Length of Red Line is: " + testLine.GetLength(GeographyUnit.Meter, DistanceUnit.Kilometer).ToString() + " KM";
mapView.Refresh();
MessageBox.Show(message, "Results");
}
