public ActionResult DrawTile(string code, string styleSet = "mapTiles")
{
try
{
PerformanceTracker pt = new PerformanceTracker("DrawTile");
MapTileSupport.GetPlusCodeImagePixelSize(code, out var imgX, out var imgY);
var info = new ImageStats(OpenLocationCode.DecodeValid(code), imgX, imgY);
if (!DataCheck.IsInBounds(cache.Get <IPreparedGeometry>("serverBounds"), info.area))
{
pt.Stop("OOB");
return(StatusCode(500));
}
byte[] tileData = getExistingSlippyTile(code, styleSet);
if (tileData != null)
{
pt.Stop(code + "|" + styleSet);
return(File(tileData, "image/png"));
}
//Make tile
var places = GetPlacesForTile(info, null, styleSet, false);
var paintOps = MapTileSupport.GetPaintOpsForStoredElements(places, styleSet, info);
tileData = FinishMapTile(info, paintOps, code, styleSet);
pt.Stop(code + "|" + styleSet + "|" + Configuration.GetValue <string>("MapTilesEngine"));
return(File(tileData, "image/png"));
}
catch (Exception ex)
{
ErrorLogger.LogError(ex);
return(StatusCode(500));
}
}
[Route("/[controller]/Slippy/{styleSet}/{zoom}/{x}/{y}.png")] //slippy map conventions.
public ActionResult DrawSlippyTile(int zoom, int x, int y, string styleSet)
{
try
{
PerformanceTracker pt = new PerformanceTracker("DrawSlippyTile");
string tileKey = x.ToString() + "|" + y.ToString() + "|" + zoom.ToString();
var info = new ImageStats(zoom, x, y, IMapTiles.SlippyTileSizeSquare);
if (!DataCheck.IsInBounds(cache.Get <IPreparedGeometry>("serverBounds"), info.area))
{
pt.Stop("OOB");
return(StatusCode(500));
}
byte[] tileData = getExistingSlippyTile(tileKey, styleSet);
if (tileData != null)
{
pt.Stop(tileKey + "|" + styleSet);
return(File(tileData, "image/png"));
}
//Make tile
var places = GetPlacesForTile(info, null, styleSet, false);
var paintOps = MapTileSupport.GetPaintOpsForStoredElements(places, styleSet, info);
tileData = FinishSlippyMapTile(info, paintOps, tileKey, styleSet);
pt.Stop(tileKey + "|" + styleSet + "|" + Configuration.GetValue <string>("MapTilesEngine"));
return(File(tileData, "image/png"));
}
catch (Exception ex)
{
ErrorLogger.LogError(ex);
return(StatusCode(500));
}
}
private static void DrawOneImage(string code)
{
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
sw.Start();
TagParser.ApplyTags(memorySource, "mapTiles");
ImageStats istats = new ImageStats(OpenLocationCode.DecodeValid(code), 1024, 1024);
var paintOps = MapTileSupport.GetPaintOpsForStoredElements(memorySource, "mapTiles", istats);
File.WriteAllBytes(config["OutputDataFolder"] + code + ".png", MapTileSupport.DrawPlusCode(code, paintOps, "mapTiles"));
sw.Stop();
Log.WriteLog("image drawn from memory in " + sw.Elapsed);
}
private static void DrawPosterOfServer()
{
var db = new PraxisContext();
var bounds = db.ServerSettings.First();
var geoArea = new GeoArea(bounds.SouthBound, bounds.WestBound, bounds.NorthBound, bounds.EastBound);
//do the math to scale image.
//the smaller side is set to 24", the larger size scales up proportionally up to a max of 36"
//if the longer side is > 36", scale both down by the difference?
//36x24 is target poster size, at 300 dpi, our image size will allow for a half-inch of margin on both axes.
var dpi = 300;
var maxXSide = 35 * dpi;
var maxYSide = 23 * dpi;
var xSize = 0;
var ySize = 0;
var heightScale = geoArea.LatitudeHeight / geoArea.LongitudeWidth; //Y pixels per X pixel
if (heightScale > 1) // Y axis is longer than X axis
{
heightScale = geoArea.LongitudeWidth / geoArea.LatitudeHeight;
maxXSide = 23 * dpi;
maxYSide = 35 * dpi;
ySize = maxYSide;
xSize = (int)(maxXSide * heightScale);
}
else
{
xSize = maxXSide;
ySize = (int)(maxYSide * heightScale);
}
Log.WriteLog("Loading all places from DB");
var places = GetPlaces(geoArea);
var iStats = new ImageStats(geoArea, xSize, ySize);
Log.WriteLog("Generating paint operations");
var paintOps = MapTileSupport.GetPaintOpsForStoredElements(places, "mapTiles", iStats);
Log.WriteLog("Drawing image");
var image = MapTiles.DrawAreaAtSize(iStats, paintOps);
File.WriteAllBytes("ServerPoster.png", image);
Log.WriteLog("Image saved to disk");
}