public string GetFileNamePrefix
(
Coordinate start,
Coordinate end,
CoordinateInt resolution
)
{
return($"region({ start.latitude },{ start.longitude })-({ end.latitude },{ end.longitude }) resolution({ resolution.latitude },{ resolution.longitude })");
}
public async Task GetElevationData
(
string filePath,
IElevationServiceProvider serviceProvider,
string apikey,
Ticket <float> ticket,
Coordinate start,
Coordinate end,
CoordinateInt resolution,
int maxCoordinatesPerRequest,
System.Action repaintWindowCallback,
System.Action onFinish,
bool logTraffic
)
{
Debug.Log($"{ nameof(GetElevationData) }() started");
IO.FileStream stream = null;
IO.StreamWriter writer = null;
try
{
int skip;
//open file stream:
{
IO.FileMode fileMode;
if (
IO.File.Exists(filePath) &&
EditorUtility.DisplayDialog(
"Decide",
"CONTINUE: Setting must match to succeessfully continue\nOVERWRITE: data will be lost",
"CONTINUE",
"OVERWRITE"
)
)
{
fileMode = IO.FileMode.Append;
skip = 0;
ForEachLine(
filePath,
(line) => skip++
);
}
else
{
fileMode = IO.FileMode.Create;
skip = 0;
}
stream = new IO.FileStream(
filePath,
fileMode,
IO.FileAccess.Write,
IO.FileShare.Read,
4096,
IO.FileOptions.SequentialScan
);
writer = new IO.StreamWriter(stream);
}
//populate stack:
Stack <Coordinate> coordinates = new Stack <Coordinate>();
{
//NOTE: i bet this wont work for ranges overlaping -180/180 latitude crossline etc
Coordinate origin = new Coordinate {
longitude = Mathf.Min(start.longitude, end.longitude),
latitude = Mathf.Min(start.latitude, end.latitude)
};
float stepX = Mathf.Abs(end.longitude - start.longitude) / (float)resolution.longitude;
float stepY = Mathf.Abs(end.latitude - start.latitude) / (float)resolution.latitude;
for (int Y = 0; Y < resolution.latitude; Y++)
{
for (int X = 0; X < resolution.longitude; X++)
{
coordinates.Push(
new Coordinate {
latitude = origin.latitude + (float)Y * stepY,
longitude = origin.longitude + (float)X * stepX
}
);
}
}
}
int numStartingCoordinates = coordinates.Count;
//skip entries (if applies):
if (skip != 0)
{
Debug.Log($"Skipping { skip } entries");
for (int i = 0; i < skip; i++)
{
coordinates.Pop();
}
}
//process stack in batches:
List <float> elevations = new List <float>(maxCoordinatesPerRequest);
while (coordinates.Count != 0)
{
//call api:
{
//get response:
string response = await HttpRequest(
serviceProvider : serviceProvider,
coordinates : coordinates,
apikey : apikey,
maxCoordinatesPerRequest : maxCoordinatesPerRequest,
ticket : ticket,
logTraffic : logTraffic
);
//
if (serviceProvider.ParseResponse(response, elevations))
{
if (elevations.Count != 0)
{
//write entries to file:
foreach (float elevation in elevations)
{
writer.WriteLine(elevation);
}
elevations.Clear();
}
else
{
throw new System.Exception("Parsed response contains no entries");
}
}
else
{
throw new System.Exception("Parse failed");
}
}
//
ticket.value = 1f - ((float)coordinates.Count / (float)numStartingCoordinates);
repaintWindowCallback();
//test for abort:
if (ticket.invalid)
{
repaintWindowCallback();
throw new System.Exception("aborted");
}
}
//task done:
ticket.value = 1f;
repaintWindowCallback();
Debug.Log(coordinates.Count == 0 ? "SUCCESS!" : $"ERROR, unprocessed coordinates: { coordinates.Count } )");
await Task.CompletedTask;
}
catch (System.Exception ex) { Debug.LogException(ex); }
finally
{
//log:
Debug.Log($"{ nameof(GetElevationData) }() finished");
//close streams:
if (writer != null)
{
writer.Close();
}
if (stream != null)
{
stream.Close();
}
//call on finish:
if (onFinish != null)
{
onFinish();
}
}
}