public ActionResult Index(int x, int y, int z)
{
var ymax = 1 << z;
y = ymax - y - 1;
var memoryStream = new MemoryStream();
using (var bitmap = new Bitmap(256, 256))
using (var g = Graphics.FromImage(bitmap))
using (var pen = new Pen(Color.Blue, 2.0f))
{
g.CompositingMode = CompositingMode.SourceOver;
g.CompositingQuality = CompositingQuality.HighQuality;
var boundsGeographyLL = GetBoundingBoxInLatLng(x, y, z);
if (boundsGeographyLL.Bottom > 0)
{
var states = new GeometryDataSource().Query(boundsGeographyLL.ToSqlGeography(), "states");
var builder = new GraphicsPathBuilder(SphericalMercator.FromLonLat(boundsGeographyLL), new Size(256 ,256));
foreach (var state in states)
{
var geography = (SqlGeography) state["geom"];
{
using (var gp = builder.Build(geography))
{
g.DrawPath(pen, gp);
}
}
}
}
bitmap.Save(memoryStream, ImageFormat.Png);
}
return File(memoryStream.ToArray(), "image/png");
}
public Utf8Grid(int utfGridResolution, int tileX, int tileY, int zoom)
{
Size size = new Size(256 / utfGridResolution, 256 / utfGridResolution);
this.bitmap = new Bitmap(size.Width, size.Height, PixelFormat.Format32bppRgb);
this.graphics = Graphics.FromImage(this.bitmap);
RectangleF bbox = this.GetBoundingBoxInLatLngWithMargin(tileX, tileY, zoom);
this.graphicsPathBuilder = new GraphicsPathBuilder(SphericalMercator.FromLonLat(bbox), size);
this.results = new Utf8GridResults();
}
public Utf8Grid(int utfGridResolution, int tileX, int tileY, int zoom)
{
Size size = new Size(256 / utfGridResolution, 256 / utfGridResolution);
this.bitmap = new Bitmap(size.Width, size.Height, PixelFormat.Format32bppRgb);
this.graphics = Graphics.FromImage(this.bitmap);
RectangleF bbox = this.GetBoundingBoxInLatLngWithMargin(tileX, tileY, zoom);
this.graphicsPathBuilder = new GraphicsPathBuilder(SphericalMercator.FromLonLat(bbox), size);
this.results = new Utf8GridResults();
}
public Utf8Grid(int utfGridResolution, int tileX, int tileY, int zoom)
{
_utfGridResolution = utfGridResolution;
var size = new Size(256 / utfGridResolution, 256 / utfGridResolution);
_bitmap = new Bitmap(size.Width, size.Height,PixelFormat.Format32bppRgb);
_graphics = Graphics.FromImage(_bitmap);
var bbox = GetBoundingBoxInLatLngWithMargin(tileX, tileY, zoom);
_graphicsPathBuilder = new GraphicsPathBuilder(SphericalMercator.FromLonLat(bbox), new Size(256 / _utfGridResolution, 256 / _utfGridResolution));
this.Keys = new List<string>();
this.Data = new Dictionary<string, object>();
this.Grid = new List<string>();
}
public Utf8Grid(int utfGridResolution, int tileX, int tileY, int zoom)
{
_utfGridResolution = utfGridResolution;
var size = new Size(256 / utfGridResolution, 256 / utfGridResolution);
_bitmap = new Bitmap(size.Width, size.Height, PixelFormat.Format32bppRgb);
_graphics = Graphics.FromImage(_bitmap);
var bbox = GetBoundingBoxInLatLngWithMargin(tileX, tileY, zoom);
_graphicsPathBuilder = new GraphicsPathBuilder(SphericalMercator.FromLonLat(bbox), new Size(256 / _utfGridResolution, 256 / _utfGridResolution));
this.Keys = new List <string>();
this.Data = new Dictionary <string, object>();
this.Grid = new List <string>();
}
private static GraphicsPath CreateGraphicsPath(RectangleF bounds, Bitmap bitmap, SqlGeography geography)
{
var builder = new GraphicsPathBuilder(bounds, bitmap.Size);
var gp = builder.Build(geography);
return gp;
}