// -------------------- DRAWING STUFF ON THE MAP -----------------------
private async void DrawPoints(object sender, RoutedEventArgs e)
{
// How to draw a new MapIcon with a label, anchorpoint and custom icon.
// Icon comes from project assets
var anchorPoint = new Point(0.5, 0.5);
var image = RandomAccessStreamReference.CreateFromUri(new Uri("ms-appx:///Assets/wplogo.png"));
// Helper extension method
try
{
var area = MyMap.GetViewArea();
// PointList is just a helper class that gives 'some data'
var points = PointList.GetRandomPoints(
new Geopoint(area.NorthwestCorner), new Geopoint(area.SoutheastCorner),
50);
foreach (var dataObject in points)
{
var shape = new MapIcon
{
Title = dataObject.Name,
Location = new Geopoint(dataObject.Points.First()),
NormalizedAnchorPoint = anchorPoint,
Image = image,
CollisionBehaviorDesired =
onCollisionShow? MapElementCollisionBehavior.RemainVisible :
MapElementCollisionBehavior.Hide,
ZIndex = 3,
};
shape.AddData(dataObject);
MyMap.MapElements.Add(shape);
}
}
catch (Exception)
{
var dialog = new MessageDialog("GetViewArea error");
await dialog.ShowAsync();
}
}
private void DrawLines(object sender, RoutedEventArgs e)
{
if (!DeleteShapesFromLevel(2))
{
var strokeColor = Colors.Green;
strokeColor.A = 200;
//Drawing lines, notice the use of Geopath. Consists out of BasicGeopositions
foreach (var dataObject in PointList.GetLines())
{
var shape = new MapPolyline
{
StrokeThickness = 9,
StrokeColor = strokeColor,
StrokeDashed = false,
ZIndex = 2,
Path = new Geopath(dataObject.Points)
};
shape.AddData(dataObject);
MyMap.MapElements.Add(shape);
}
}
}
/// <summary>
/// Get 50 random point in the view
/// </summary>
public static IEnumerable<PointList> GetRandomPoints(Geopoint point1, Geopoint point2, int nrOfPoints)
{
var result = new List<PointList>();
var p1 = new BasicGeoposition
{
Latitude = Math.Min(point1.Position.Latitude, point2.Position.Latitude),
Longitude = Math.Min(point1.Position.Longitude, point2.Position.Longitude)
};
var p2 = new BasicGeoposition
{
Latitude = Math.Max(point1.Position.Latitude, point2.Position.Latitude),
Longitude = Math.Max(point1.Position.Longitude, point2.Position.Longitude)
};
var dLat = p2.Latitude - p1.Latitude;
var dLon = p2.Longitude - p1.Longitude;
var r = new Random(DateTime.Now.Millisecond);
for (var i = 0; i < nrOfPoints; i++)
{
var item = new PointList { Name = "Point " + i };
item.Points.Add(
new BasicGeoposition
{
Latitude = p1.Latitude + (r.NextDouble() * dLat),
Longitude = p1.Longitude + (r.NextDouble() * dLon),
Altitude = 1000 * r.NextDouble()
});
result.Add(item);
}
return result;
}
