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 void DrawIcon(Bitmap image, Tuple <double, double> coord, StaticMapIcon icon, int zoom, double x_center, double y_center, int tileSize)
{
SolidBrush brush;
int scale = 1;
switch (icon)
{
case StaticMapIcon.Charge:
brush = new SolidBrush(Color.OrangeRed);
scale = 3;
break;
case StaticMapIcon.End:
brush = new SolidBrush(Color.Green);
break;
case StaticMapIcon.Park:
brush = new SolidBrush(Color.Blue);
scale = 3;
break;
case StaticMapIcon.Start:
brush = new SolidBrush(Color.Red);
break;
default:
brush = new SolidBrush(Color.White);
break;
}
int x = XtoPx(LonToTileX(coord.Item2, zoom), x_center, tileSize, image.Width);
int y = YtoPx(LatToTileY(coord.Item1, zoom), y_center, tileSize, image.Height);
Rectangle rect = new Rectangle(x - 4 * scale, y - 10 * scale, 8 * scale, 8 * scale);
Point[] triangle = new Point[] { new Point(x - 4 * scale, y - 6 * scale), new Point(x, y), new Point(x + 4 * scale, y - 6 * scale) };
using (Graphics g = Graphics.FromImage(image))
{
g.SmoothingMode = SmoothingMode.AntiAlias;
using (Pen whitePen = new Pen(Color.White, 1))
{
g.PixelOffsetMode = PixelOffsetMode.Half;
g.FillPie(brush, rect, 180, 180);
g.FillPolygon(brush, triangle);
g.DrawArc(whitePen, rect, 180, 180);
g.DrawLine(whitePen, triangle[0], triangle[1]);
g.DrawLine(whitePen, triangle[1], triangle[2]);
}
if (icon == StaticMapIcon.Park || icon == StaticMapIcon.Charge)
{
string text = icon == StaticMapIcon.Park ? "P" : "\u26A1";
using (Font drawFont = new Font(FontFamily.GenericSansSerif, 12, FontStyle.Bold))
{
SizeF size = g.MeasureString(text, drawFont);
using (SolidBrush textBrush = new SolidBrush(Color.White))
{
using (StringFormat drawFormat = new StringFormat())
{
g.DrawString(text, drawFont, textBrush, x - size.Width / 2, y - 6 * scale - size.Height / 2);
}
}
}
}
}
brush.Dispose();
}
