//
// GET: /Tiles/Business/
public ActionResult Index(int x, int y, int zoom, List <long> industryIds = null, string color = "#ff5522", int width = 256, int height = 256, int?employeesMin = null, int?employeesMax = null)
{
using (var context = ContextFactory.SizeUpContext)
{
industryIds = industryIds == null ? new List <long>() : industryIds;
Businesses tile = new Businesses(width, height, x, y, zoom);
var boundingBox = tile.GetBoundingBox(TileBuffer);
List <GeographyEntity> geos = new List <GeographyEntity>();
if (industryIds.Count > 0)
{
var buisnesses = Core.DataLayer.Business.In(context, boundingBox)
.Join(Core.DataLayer.BusinessData.Get(context).Where(i => (i.Employees >= (employeesMin) || employeesMin == null) && (i.Employees <= (employeesMax) || employeesMax == null)), i => i.Id, j => j.BusinessId, (i, j) => i)
.Where(i => industryIds.Contains(i.IndustryId.Value))
.Select(i => new { Lat = i.Lat, Lng = i.Long });
var opacity = Math.Max(128, Math.Min(255, (zoom - 5) * 25));
var borderOpacity = Math.Max(0, Math.Min(255, 25 * (zoom - 13) + 125));
geos = buisnesses.ToList()
.Select(i => new GeographyEntity()
{
Geography = SqlGeography.Parse(string.Format("POINT({0} {1})", i.Lng, i.Lat)),
Color = color,
Opacity = opacity,
BorderWidth = 1,
BorderColor = "#000000",
BorderOpacity = borderOpacity
})
.ToList();
}
tile.Draw(geos);
var stream = new System.IO.MemoryStream();
tile.Bitmap.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
return(File(stream.GetBuffer(), "image/png"));
}
}