private GeoMultiLine CreateMultiLine()
{
GeoLine line1 = new GeoLine();
GeoLine line2 = new GeoLine();
double startX = Map1.CurrentBound.MinX + Map1.CurrentBound.Width * .15;
double endX = Map1.CurrentBound.MinX + Map1.CurrentBound.Width * .85;
double height = Map1.CurrentBound.Height * .25;
double centerY1 = Map1.CurrentCenter.Y + height;
double centerY2 = Map1.CurrentCenter.Y - height;
int segmentCount = 30;
double segmentHorizontalLength = (endX - startX) / segmentCount;
for (int i = 0; i < segmentCount; i++)
{
double x1 = startX + segmentHorizontalLength * i;
double y1 = Math.Sin(Math.PI * 2 * i / segmentCount) * height + centerY1;
line1.Coordinates.Add(new GeoCoordinate(x1, y1));
double x2 = startX + segmentHorizontalLength * i;
double y2 = Math.Cos(Math.PI * 2 * i / segmentCount) * height + centerY2;
line2.Coordinates.Add(new GeoCoordinate(x2, y2));
}
GeoMultiLine multiLine = new GeoMultiLine();
multiLine.Lines.Add(line1);
multiLine.Lines.Add(line2);
return(multiLine);
}
private GeoLine CreateGreatCircle()
{
GeoPoint point1 = new GeoPoint(-73.935242, 40.730610);
GeoPoint point2 = new GeoPoint(2.294694, 48.858093);
GeoMultiLine greatCircleInWgs84 = point1.GetGreatCircle(point2, 30);
Projection projection = new Proj4Projection(SpatialReferences.GetWgs84(), SpatialReferences.GetSphericalMercator());
GeoMultiLine greatCircleIn900913 = (GeoMultiLine)projection.ConvertToTarget(greatCircleInWgs84);
return(greatCircleIn900913.Lines[0]);
}
private async void Button_Click(object sender, RoutedEventArgs e)
{
MemoryLayer resultLayer = Map1.FindLayer <MemoryLayer>("ResultLayer");
if (resultLayer.Features.Count == 0)
{
GeoMultiLine shortestResult = await Task.Run(() => feature1.Geometry.GetShortestLineTo(feature2.Geometry));
GeoLine shortestLine = shortestResult.Lines.First();
resultLayer.Features.Add(new Feature(shortestLine));
resultLayer.Features.Add(new Feature(new GeoPoint(shortestLine.Coordinates.First())));
resultLayer.Features.Add(new Feature(new GeoPoint(shortestLine.Coordinates.Last())));
Map1.Refresh("ResultOverlay");
}
}
