public static TopoStats FromTracks(IEnumerable <ITopoTrackInfo> tracks)
{
var stats = new TopoStats();
if ((tracks?.Count() ?? 0) == 0)
{
return(stats);
}
var points = 0;
var hours = 0.0;
var ascent = 0.0;
var descent = 0.0;
var distance = 0.0;
var distanceWithElevation = 0.0;
var start = DateTime.MaxValue;
var finish = DateTime.MinValue;
foreach (var track in tracks)
{
points += track.TopoPoints.Count();
hours += track.FinishUTC.Subtract(track.StartUTC).TotalHours;
ascent += GeoDistance.ElevationBetweenPoints(track.TopoPoints, 1).Meters;
descent += GeoDistance.ElevationBetweenPoints(track.TopoPoints, -1).Meters;
distance += GeoDistance.BetweenPoints(track.TopoPoints, true).Meters;
distanceWithElevation += GeoDistance.BetweenPoints(track.TopoPoints, true).Meters;
if (track.TopoPoints.First().LocalTime < start)
{
start = track.TopoPoints.First().LocalTime;
}
if (track.TopoPoints.Last().LocalTime > finish)
{
finish = track.TopoPoints.Last().LocalTime;
}
}
if (points == 0)
{
return(stats);
}
stats.ElapsedTime = TimeSpan.FromHours(hours);
stats.Distance = GeoDistance.FromMeters(distance);
stats.DistanceWithElevation = GeoDistance.FromMeters(distanceWithElevation);
stats.EstimatedMetersAscent = ascent;
stats.EstimatedMetersDescent = descent;
stats.SecondsBetweenPoints = (hours * 60 * 60) / points;
stats.PointCount = points;
stats.DayCount = (finish.DayOfYear - start.DayOfYear) + 1;
return(stats);
}
public static TopoStats FromTrack(ITopoTrackInfo track)
{
var stats = new TopoStats();
if (track == null || track.TopoPoints.Count() == 0)
{
return(stats);
}
stats.ElapsedTime = track.FinishUTC.Subtract(track.StartUTC);
stats.Distance = GeoDistance.BetweenPoints(track.TopoPoints, true);
stats.DistanceWithElevation = GeoDistance.BetweenPoints(track.TopoPoints, true);
stats.EstimatedMetersAscent = GeoDistance.ElevationBetweenPoints(track.TopoPoints, 1).Meters;
stats.EstimatedMetersDescent = GeoDistance.ElevationBetweenPoints(track.TopoPoints, -1).Meters;
stats.SecondsBetweenPoints = stats.ElapsedTime.TotalSeconds / track.TopoPoints.Count();
stats.PointCount = track.TopoPoints.Count();
stats.DayCount = track.FinishLocal.DayOfYear - track.StartLocal.DayOfYear;
return(stats);
}
