private static ILayer CreateMutatingTriangleLayer(BoundingBox envelope)
{
var layer = new MemoryLayer();
var polygon = new Polygon(new LinearRing(GenerateRandomPoints(envelope, 3)));
var feature = new Feature()
{
Geometry = polygon
};
var features = new Features();
features.Add(feature);
layer.DataSource = new MemoryProvider(features);
PeriodicTask.Run(() =>
{
polygon.ExteriorRing = new LinearRing(GenerateRandomPoints(envelope, 3));
// Clear cache for change to show
feature.RenderedGeometry.Clear();
// Trigger DataChanged notification
layer.ViewChanged(true, layer.Envelope, 1);
},
TimeSpan.FromMilliseconds(1000));
return(layer);
}
/// <summary>
/// Standard click event to get advice based on a move request
/// </summary>
private void HResultGet_Click(object sender, RoutedEventArgs e)
{
Task.Run(() =>
{
//Check if old and new house are found
if ((p1.Item1 == 0 && p1.Item2 == 0) ||
(p2.Item1 == 0 && p2.Item2 == 0))
{
Dispatcher.Invoke(new Action(() =>
{
//Reset everything
routeGeometry = new LineString();
MemoryLayer memoryLayer = (MemoryLayer)MyMapControl.Map.Layers.FindLayer("Route Layer").ElementAt(0);
memoryLayer.DataSource = CreateMemoryProvider();
memoryLayer.ClearCache();
memoryLayer.ViewChanged(true, memoryLayer.Envelope, 1);
MyMapControl.Map.ViewChanged(true);
hResult.Text = "Get address coordinates first!";
}), DispatcherPriority.ContextIdle);
}
else
{
Dispatcher.Invoke(new Action(() =>
{
//Disable the button to avoid parallel calls
hResultGet.IsEnabled = false;
}), DispatcherPriority.ContextIdle);
try
{
//Get route from old to new house
var route = GetRoute(p1, p2).Result;
if (route != null && route.Count > 1)
{
//Get distance and duration of moving from one house to another
var meta = route[route.Count - 1];
route.RemoveAt(route.Count - 1);
//Compose moving duration string
string duration = "Expected moving duration - " +
Math.Floor(meta.Y / 60.0 / 60.0)
.ToString(CultureInfo.InvariantCulture) +
" hours, " +
Math.Floor(meta.Y / 60.0 - Math.Floor(meta.Y / 60.0 / 60.0) * 60.0)
.ToString(CultureInfo.InvariantCulture) +
" minutes, " +
Math.Floor(meta.Y - Math.Floor(meta.Y / 60.0 / 60.0) * 60.0 * 60.0 - Math.Floor(meta.Y / 60.0) * 60.0)
.ToString(CultureInfo.InvariantCulture) +
" seconds. ";
//Get weather forecast for next 5 days at old house
var weather = GetForecast(p1).Result;
//Get individual forecast list
//Take only forecasts during working hours (8 to 22)
//Order by weather condition ids: https://openweathermap.org/weather-conditions, (generally higher ids are better)
//Then order by temperature, (generally higher temperature is better)
//Get element 0, which is the best
var bestT = weather.list
.Where(a =>
{
var atime = FromSecondsSinceUnixEpoch(a.dt);
return(atime.Hour > 8 && atime.Hour < 22);
})
.OrderByDescending(a => a.weather[0].id)
.ThenByDescending(a => a.main.temp)
.ElementAt(0);
//Compose forecast string
string forecast = "Best time to move within 5 days - " +
FromSecondsSinceUnixEpoch(bestT.dt).ToString("dddd, dd MMMM yyyy HH:mm", CultureInfo.InvariantCulture) +
" because then weather will be " + bestT.weather[0].main.ToLowerInvariant() +
", " + bestT.weather[0].description.ToLowerInvariant() + " to be exact; " +
"expected temparature - " + Math.Floor(bestT.main.temp).ToString(CultureInfo.InvariantCulture) + " degrees Celsius. ";
Dispatcher.Invoke(new Action(() =>
{
//Use LINQ to convert geographical points to screen ones
routeGeometry = new LineString(route.Select(
a => SphericalMercator.FromLonLat(a.X, a.Y)));
//Find the specific map layer with routing data
MemoryLayer memoryLayer = (MemoryLayer)MyMapControl.Map.Layers.FindLayer("Route Layer").ElementAt(0);
//Create a new memory provider with our new route
memoryLayer.DataSource = CreateMemoryProvider();
//Clear render cache
memoryLayer.ClearCache();
//Inform layer of a data change, making it re-render the whole thing
memoryLayer.ViewChanged(true, memoryLayer.Envelope, 1);
//Inform map of a data change, making it re-render the whole thing
MyMapControl.Map.ViewChanged(true);
//Update advice text
hResult.Text = duration + forecast;
}), DispatcherPriority.ContextIdle);
}
else
{
Dispatcher.Invoke(new Action(() =>
{
//Same as higher but with an empty route
routeGeometry = new LineString();
MemoryLayer memoryLayer = (MemoryLayer)MyMapControl.Map.Layers.FindLayer("Route Layer").ElementAt(0);
memoryLayer.DataSource = CreateMemoryProvider();
memoryLayer.ClearCache();
memoryLayer.ViewChanged(true, memoryLayer.Envelope, 1);
MyMapControl.Map.ViewChanged(true);
hResult.Text = "Failed to find a path!";
}), DispatcherPriority.ContextIdle);
}
}
catch (Exception)
{
Dispatcher.Invoke(new Action(() =>
{
//Same as higher but with an empty route
routeGeometry = new LineString();
MemoryLayer memoryLayer = (MemoryLayer)MyMapControl.Map.Layers.FindLayer("Route Layer").ElementAt(0);
memoryLayer.DataSource = CreateMemoryProvider();
memoryLayer.ClearCache();
memoryLayer.ViewChanged(true, memoryLayer.Envelope, 1);
MyMapControl.Map.ViewChanged(true);
hResult.Text = "An error occured during advice gathering!";
}), DispatcherPriority.ContextIdle);
}
Dispatcher.Invoke(new Action(() =>
{
//Enable the Get Advice button for future use
hResultGet.IsEnabled = true;
}), DispatcherPriority.ContextIdle);
}
});
}
