/// <summary>
/// Updates the bounds of a <see cref="GpxFile"/> object according to internal data
/// </summary>
/// <param name="gpx">The <see cref="GpxFile"/></param>
/// <returns>An updated <see cref="GpxFile"/></returns>
public static GpxFile UpdateBounds(this GpxFile gpx)
{
if (gpx.Metadata?.Bounds != null &&
gpx.Metadata.Bounds.MinLatitude.Value != 0.0 &&
gpx.Metadata.Bounds.MaxLatitude.Value != 0.0 &&
gpx.Metadata.Bounds.MinLongitude.Value != 0.0 &&
gpx.Metadata.Bounds.MaxLongitude.Value != 0.0)
{
return(gpx);
}
var points = (gpx.Routes ?? new List <GpxRoute>()).Where(r => r.Waypoints != null).SelectMany(r => r.Waypoints).ToArray();
points = points.Concat(gpx.Waypoints ?? new List <GpxWaypoint>()).ToArray();
points = points.Concat((gpx.Tracks ?? new List <GpxTrack>()).Where(r => r.Segments != null).SelectMany(t => t.Segments).SelectMany(s => s.Waypoints)).ToArray();
if (!points.Any())
{
return(gpx);
}
var boundingBox = new GpxBoundingBox(
minLatitude: new GpxLatitude(points.Min(p => p.Latitude.Value)),
maxLatitude: new GpxLatitude(points.Max(p => p.Latitude.Value)),
minLongitude: new GpxLongitude(points.Min(p => p.Longitude.Value)),
maxLongitude: new GpxLongitude(points.Max(p => p.Longitude.Value))
);
gpx.Metadata = gpx.Metadata == null
? new GpxMetadata(null, null, null, null, null, ImmutableArray <GpxWebLink> .Empty, null, null, boundingBox, null)
: new GpxMetadata(gpx.Metadata.Creator, gpx.Metadata.Name, gpx.Metadata.Description, gpx.Metadata.Author, gpx.Metadata.Copyright, gpx.Metadata.Links, gpx.Metadata.CreationTimeUtc, gpx.Metadata.Keywords, boundingBox, gpx.Metadata.Extensions);
return(gpx);
}
private void UpdateBoundingBox(DataContainer container, GpxBoundingBox bounds)
{
container.NorthEast = new LatLng
{
Lat = bounds.MaxLatitude,
Lng = bounds.MaxLongitude
};
container.SouthWest = new LatLng
{
Lat = bounds.MinLatitude,
Lng = bounds.MinLongitude
};
}
