private void Work()
{
Tools.DebugLog("StaticMapService:Work() queue:" + queue.Count);
if (queue.TryDequeue(out Tuple <int, int, int, int, StaticMapType, StaticMapMode> request))
{
Tools.DebugLog($"StaticMapService:Work() request:{request.Item5} {request.Item1}->{request.Item2}");
int padding_x = 12;
int padding_y = 12;
int width = request.Item3 > 0 ? request.Item3 : 240;
int height = request.Item4 > 0 ? request.Item4 : (int)(width / 1.618033);
int tileSize = 256;
List <Tuple <double, double> > coords = TripToCoords(request);
Tuple <double, double, double, double> extent = DetermineExtent(coords);
// calculate center point of map
double lat_center = (extent.Item1 + extent.Item3) / 2;
double lng_center = (extent.Item2 + extent.Item4) / 2;
int zoom = 19; // max zoom
double x_center = LonToTileX(lng_center, zoom);
double y_center = LatToTileY(lat_center, zoom);
if (request.Item5 == StaticMapType.Trip && coords.Count > 1)
{
// trip
zoom = CalculateZoom(coords, padding_x, padding_y, width, height, tileSize);
x_center = LonToTileX(lng_center, zoom);
y_center = LatToTileY(lat_center, zoom);
}
using (Bitmap map = DrawMap(request, width, height, tileSize, coords, zoom, x_center, y_center))
{
if (coords.Count == 1 && (request.Item5 == StaticMapType.Park || request.Item5 == StaticMapType.Charge))
{
// park or charge
StaticMapIcon icon = StaticMapIcon.Charge;
if (request.Item5 == StaticMapType.Park)
{
icon = StaticMapIcon.Park;
}
DrawIcon(map, coords.First(), icon, zoom, x_center, y_center, tileSize);
}
else if (request.Item5 == StaticMapType.Trip && coords.Count > 1)
{
// trip
DrawTrip(map, coords, zoom, x_center, y_center, tileSize);
}
else
{
Tools.DebugLog("StaticMapService:Work() request unknown type: " + request.Item5);
return;
}
try
{
map.Save(FileManager.GetMapCachePath() + $"map_{request.Item1}_{request.Item2}.png.tmp");
File.Move(FileManager.GetMapCachePath() + $"map_{request.Item1}_{request.Item2}.png.tmp", FileManager.GetMapCachePath() + $"map_{request.Item1}_{request.Item2}.png");
}
catch (Exception ex)
{
Logfile.Log(ex.ToString());
}
}
}
}
private Bitmap DownloadTile(int zoom, int tile_x, int tile_y)
{
string localMapCacheFilePath = Path.Combine(FileManager.GetMapCachePath(), $"{zoom}_{tile_x}_{tile_y}.png");
if (MapFileExistsOrIsTooOld(localMapCacheFilePath, 8))
{
// cached file too old or does not exist yet
int retries = 0;
while (!File.Exists(localMapCacheFilePath) && retries < 10)
{
retries++;
int num = random.Next(0, 3);
char abc = (char)('a' + num);
Uri url = new Uri($"http://{abc}.tile.osm.org/{zoom}/{tile_x}/{tile_y}.png");
Tools.DebugLog("DownloadTile() url: " + url);
try
{
using (WebClient wc = new WebClient())
{
wc.Headers["User-Agent"] = this.GetType().ToString();
wc.DownloadFile(url, localMapCacheFilePath);
wc.Dispose();
}
}
catch (WebException)
{
Tools.DebugLog("DownloadTile() failed for url: " + url);
}
}
}
else
{
Tools.DebugLog("DownloadTile() use cached local file " + localMapCacheFilePath);
}
try
{
using (Image img = Image.FromFile(localMapCacheFilePath))
{
return(new Bitmap(img));
}
}
catch (Exception)
{
return(new Bitmap(tileSize, tileSize));
}
}
public override void CreateTripMap(DataTable coords, int width, int height, MapMode mapmode, MapSpecial special, string filename)
{
if (coords == null)
{
return;
}
// workaround for linux mono libgdiplus memory leak
Dictionary <string, object> job = new Dictionary <string, object>();
Tuple <double, double, double, double> extent = DetermineExtent(coords);
if (extent == null)
{
return;
}
// calculate center point of map
double lat_center = (extent.Item1 + extent.Item3) / 2;
double lng_center = (extent.Item2 + extent.Item4) / 2;
int zoom = CalculateZoom(extent, width, height);
job.Add("zoom", zoom);
double x_center = LngToTileX(lng_center, zoom);
job.Add("x_center", x_center);
double y_center = LatToTileY(lat_center, zoom);
job.Add("y_center", y_center);
job.Add("filename", filename);
job.Add("width", width);
job.Add("height", height);
job.Add("mapmode", mapmode);
job.Add("tileSize", tileSize);
job.Add("MapCachePath", FileManager.GetMapCachePath());
List <double> latlng = new List <double>();
for (int row = 0; row < coords.Rows.Count; row++)
{
latlng.Add(Convert.ToDouble(coords.Rows[row]["lat"], Tools.ciDeDE));
latlng.Add(Convert.ToDouble(coords.Rows[row]["lng"], Tools.ciDeDE));
}
job.Add("latlng", latlng.ToArray());
string tempfile = Path.GetTempFileName();
File.WriteAllText(tempfile, new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(job), Encoding.UTF8);
GetOSMMapGeneratorFilename(out string fileName, out string arguments);
arguments += "-jobfile " + tempfile + (Program.VERBOSE ? " - debug" : "");
using (Process process = new Process
{
StartInfo = new ProcessStartInfo
{
FileName = fileName,
Arguments = arguments,
UseShellExecute = false,
RedirectStandardOutput = true,
CreateNoWindow = true
}
})
{
process.Start();
while (!process.StandardOutput.EndOfStream)
{
Logfile.Log(process.StandardOutput.ReadLine());
}
process.WaitForExit();
}
if (File.Exists(tempfile))
{
File.Delete(tempfile);
}
}
public override void CreateParkingMap(double lat, double lng, int width, int height, MapMode mapmode, MapSpecial special, string filename)
{
int zoom = 16;
// workaround for linux mono libgdiplus memory leak
Dictionary <string, object> job = new Dictionary <string, object>();
double x_center = LngToTileX(lng, zoom);
double y_center = LatToTileY(lat, zoom);
job.Add("zoom", zoom);
job.Add("x_center", x_center);
job.Add("y_center", y_center);
job.Add("filename", filename);
job.Add("width", width);
job.Add("height", height);
job.Add("mapmode", mapmode);
job.Add("tileSize", tileSize);
job.Add("MapCachePath", FileManager.GetMapCachePath());
job.Add("poi", "park");
job.Add("lat", lat);
job.Add("lng", lng);
string tempfile = Path.GetTempFileName();
GetOSMMapGeneratorFilename(out string fileName, out string arguments);
arguments += "-jobfile " + tempfile + (Program.VERBOSE ? " - debug" : "");
File.WriteAllText(tempfile, new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(job), Encoding.UTF8);
using (Process process = new Process
{
StartInfo = new ProcessStartInfo
{
FileName = fileName,
Arguments = arguments,
UseShellExecute = false,
RedirectStandardOutput = true,
CreateNoWindow = true
}
})
{
process.Start();
while (!process.StandardOutput.EndOfStream)
{
Logfile.Log(process.StandardOutput.ReadLine());
}
process.WaitForExit();
}
if (File.Exists(tempfile))
{
File.Delete(tempfile);
}
/*
* using (Bitmap map = DrawMap(width, height, 19, x_center, y_center, mapmode))
* {
* // map has background tiles, OSM attribution and dark mode, if enabled
* DrawIcon(map, lat, lng, MapIcon.Park, 19, x_center, y_center);
* SaveImage(map, filename);
* map.Dispose();
* }
*/
}
