private void btnSplitLine_Click(object sender, EventArgs e)
{
LayerOverlay layerOverLay = (LayerOverlay)winformsMap1.Overlays[1];
MapShapeLayer mapShapeLayer = (MapShapeLayer)layerOverLay.Layers[0];
LineShape lineShape = (LineShape)mapShapeLayer.MapShapes["Line1"].Feature.GetShape();
LineShape lineShape2 = (LineShape)mapShapeLayer.MapShapes["Line2"].Feature.GetShape();
//Gets the crossing MultipointShape with the PointShape that will be used to calculate the two split lines.
MultipointShape multipointShape = lineShape.GetCrossing(lineShape2);
//Uses the GetLineOnLine (Dynamic Segmentation) to get the two split lines from the intersection point.
LineShape splitLineShape1 = (LineShape)lineShape.GetLineOnALine(StartingPoint.FirstPoint, multipointShape.Points[0]);
LineShape splitLineShape2 = (LineShape)lineShape.GetLineOnALine(StartingPoint.LastPoint, multipointShape.Points[0]);
//Displays the two split lines with different colors to distinguish them.
MapShape splitMapShape1 = new MapShape(new Feature(splitLineShape1));
splitMapShape1.ZoomLevels.ZoomLevel01.DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Orange, 3, true);
splitMapShape1.ZoomLevels.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
mapShapeLayer.MapShapes.Add("SplitLine1", splitMapShape1);
MapShape splitMapShape2 = new MapShape(new Feature(splitLineShape2));
splitMapShape2.ZoomLevels.ZoomLevel01.DefaultLineStyle = LineStyles.CreateSimpleLineStyle(GeoColor.StandardColors.Turquoise, 3, true);
splitMapShape2.ZoomLevels.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
mapShapeLayer.MapShapes.Add("SplitLine2", splitMapShape2);
//Displays the intersection point as a reference.
MapShape pointMapShape = new MapShape(new Feature(multipointShape.Points[0]));
pointMapShape.ZoomLevels.ZoomLevel01.DefaultPointStyle = PointStyles.CreateSimplePointStyle(PointSymbolType.Circle,
GeoColor.StandardColors.Red, GeoColor.StandardColors.Black, 1, 9);
pointMapShape.ZoomLevels.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20;
mapShapeLayer.MapShapes.Add("Point", pointMapShape);
winformsMap1.Refresh(layerOverLay);
btnSplitLine.Enabled = false;
}
private void btnSearch_Click(object sender, RoutedEventArgs e)
{
PointShape start = Points[((ComboBoxItem)cmbStart.SelectedItem).Content.ToString()];
PointShape end = Points[((ComboBoxItem)cmbEnd.SelectedItem).Content.ToString()];
LineShape startSegment = GetNearestSegment(start);
LineShape endSegment = GetNearestSegment(end);
LineShape route = new LineShape();
if (startSegment.Id == endSegment.Id)
{
route = startSegment.GetLineOnALine(start, end) as LineShape;
}
else
{
double tolerance = double.Parse(txtTolerance.Text, CultureInfo.InvariantCulture);
PolygonShape bufferedPolygon = endSegment.Buffer(tolerance, GeographyUnit.DecimalDegree, DistanceUnit.Meter).Polygons[0];
MultilineShape intersectedLines = startSegment.GetIntersection(bufferedPolygon) as MultilineShape;
if (intersectedLines.Lines.Count > 0) // Just check the intersected within allowed tolerance.
{
PointShape intersectedPoint = intersectedLines.Lines[0].GetCenterPoint();
PointShape nearestPointOnStart = intersectedPoint.GetClosestPointTo(startSegment, GeographyUnit.DecimalDegree);
PointShape nearestPointOnEnd = intersectedPoint.GetClosestPointTo(endSegment, GeographyUnit.DecimalDegree);
LineShape routeSegmentOnStart = startSegment.GetLineOnALine(start, nearestPointOnStart) as LineShape;
LineShape routeSegmentOnEnd = endSegment.GetLineOnALine(end, nearestPointOnEnd) as LineShape;
IEnumerable <Vertex> vertexs = route.Vertices;
int index = IndexOf(routeSegmentOnStart.Vertices, new Vertex(nearestPointOnStart));
if (index == 0)
{
vertexs = vertexs.Concat(routeSegmentOnStart.Vertices.Reverse());
}
else
{
vertexs = vertexs.Concat(routeSegmentOnStart.Vertices);
}
index = IndexOf(routeSegmentOnEnd.Vertices, new Vertex(nearestPointOnEnd));
if (index == 0)
{
vertexs = vertexs.Concat(routeSegmentOnEnd.Vertices);
}
else
{
vertexs = vertexs.Concat(routeSegmentOnEnd.Vertices.Reverse());
}
route = new LineShape(vertexs);
}
}
routeResultLayer.InternalFeatures.Clear();
if (route.Vertices.Count > 1)
{
routeResultLayer.InternalFeatures.Add(new Feature(route));
}
else
{
MessageBox.Show("No Route Found.");
}
Map1.Refresh();
}
