public static void near(double price, int min, int max, double lat, double lng, int zoom, Bitmap bitmap)
{
int r = (int)map(price, min, max, 0, 255);
int g = 255 - Math.Abs((int)map(price, min, max, -255, 255));
int b = (int)map(price, min, max, 255, 0);
r = Math.Max(Math.Min(r, 255), 0);
g = Math.Max(Math.Min(g, 255), 0);
b = Math.Max(Math.Min(b, 255), 0);
Color color = Color.FromArgb(255, r, g, b);
GlobalMercator proj = new GlobalMercator();
int[] pixel = proj.latLngToTile(lat, lng, zoom);
if (zoom <= 8)
{
bitmap.SetPixel(pixel[0], pixel[1], color);
}
else
{
double size0 = zoom - 5.0;
int size = (int)Math.Max(size0, 1);
int px = (pixel[0] - (int)(size * 0.5));
int py = (pixel[1] - (int)(size * 0.5));
Graphics grf = Graphics.FromImage(bitmap);
Brush brsh = new SolidBrush(color);
grf.FillEllipse(brsh, px, py, size, size);
grf.Dispose();
}
}
/// <summary>
/// Tests for previous bitmap. none == -1, blank == 0, full == 1
/// </summary>
/// <param name="quadTree"></param>
/// <returns></returns>
int previousBitmap(string quadTree)
{
string dir = @"C:\data\" + dirType + @"\images\";
GlobalMercator projection = new GlobalMercator();
int[] tileXYZ = projection.quadKeyToTileXY(quadTree);
// bitmap.Save(@"C:\data\HousePricesDownload\web\images\"+tileXYZ[2]+"/"+tileXYZ[0]+"/"+tileXYZ[1]+".png");
string pathString = dir + tileXYZ[2] + "/" + tileXYZ[0] + "/" + tileXYZ[1] + ".png";
bool previous = System.IO.File.Exists(pathString);
if (!previous)
{
return(-1);
}
bool blank = isBlank(pathString);
if (blank)
{
return(0);
}
else
{
return(1);
}
}
static async Task <long> queryLand(string quadTree, IMongoCollection <BsonDocument> collection)
{
//filters for square footage
string dirType = "land";
GlobalMercator proj = new GlobalMercator();
int[] tileXYZ = proj.quadKeyToTileXY(quadTree);
System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(256, 256);
long count = 0;
int zoom = quadTree.Length;
var builder = Builders <BsonDocument> .Filter;
var regex = new BsonRegularExpression(string.Format("^{0}", quadTree));
var filter = Builders <BsonDocument> .Filter.Regex("quad", regex);
var filterGt = Builders <BsonDocument> .Filter.Gt("sf", 0);
filter = filter & builder.Not(filterGt);
using (var cursor = await collection.FindAsync(filter)) {
while (await cursor.MoveNextAsync())
{
var batch = cursor.Current;
foreach (var doc in batch)
{
if (doc["price"].BsonType != BsonType.Int32)
{
continue;
}
double p = (double)doc["price"].AsInt32;
// double sf = (double) doc["sf"].AsInt32;
double latitude = (double)doc["lat"].AsDouble;
double longitude = (double)doc["lng"].AsDouble;
// double ppsf = p/sf;
Draw.near(p, 5000, 800000, latitude, longitude, zoom, bitmap);
//Draw.price(ppsf, latitude, longitude, zoom, bitmap);
//Draw.near(ppsf, 50, 250, latitude,longitude,zoom, bitmap);
//Draw.near(doc["price"].AsInt32, doc["nearMin"].AsInt32, doc["nearMax"].AsInt32, doc["lat"].AsDouble, doc["lng"].AsDouble, zoom, bitmap);
}
}
}
////save bitmap
string pathString = @"C:\data\" + dirType + @"\images\" + tileXYZ[2] + "/" + tileXYZ[0] + "/";
System.IO.Directory.CreateDirectory(pathString);
bitmap.Save(@"C:\data\" + dirType + @"\images\" + tileXYZ[2] + "/" + tileXYZ[0] + "/" + tileXYZ[1] + ".png");
return(count);
}
static async Task <long> queryToBitmap3(string quadTree, IMongoCollection <BsonDocument> collection, string dirType)
{
GlobalMercator proj = new GlobalMercator();
int[] tileXYZ = proj.quadKeyToTileXY(quadTree);
System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(256, 256);
long count = 0;
int zoom = quadTree.Length;
var builder = Builders <BsonDocument> .Filter;
var regex = new BsonRegularExpression(string.Format("^{0}", quadTree));
var filter = Builders <BsonDocument> .Filter.Regex("quad", regex);
//filter = filter & builder.Lt("lng", bounds[3]);
//filter = filter & builder.Exists("nearMin",true);
filter = filter & builder.Gt("sf", 0);
//var result = await collection.Find(filter).ToListAsync();
using (var cursor = await collection.FindAsync(filter)) {
while (await cursor.MoveNextAsync())
{
var batch = cursor.Current;
foreach (var doc in batch)
{
if (doc["price"].BsonType != BsonType.Int32)
{
continue;
}
int p = (int)doc["price"].AsInt32;
double latitude = (double)doc["lat"].AsDouble;
double longitude = (double)doc["lng"].AsDouble;
Draw.price(p, latitude, longitude, zoom, bitmap);
//Draw.near(doc["price"].AsInt32, doc["nearMin"].AsInt32, doc["nearMax"].AsInt32, doc["lat"].AsDouble, doc["lng"].AsDouble, zoom, bitmap);
}
}
}
////save bitmap
string pathString = @"C:\data\HousePricesDownload\web\images\" + tileXYZ[2] + "/" + tileXYZ[0] + "/";
System.IO.Directory.CreateDirectory(pathString);
bitmap.Save(@"C:\data\HousePricesDownload\web\images\" + tileXYZ[2] + "/" + tileXYZ[0] + "/" + tileXYZ[1] + ".png");
return(count);
}
void cities(IMongoCollection <BsonDocument> collection, int minZoom, int maxZoom)
{
GlobalMercator proj = new GlobalMercator();
string quadDallas = proj.latlngToQuadKey(32.7805664, -96.8081442, minZoom);
string quadFtWorth = proj.latlngToQuadKey(32.7586487, -97.3324023, minZoom);
string quadHouston = proj.latlngToQuadKey(29.758169, -95.3684179, minZoom);
string quadLosAngeles = proj.latlngToQuadKey(34.0507041, -118.243092, minZoom);
string quadSanFrancisco = proj.latlngToQuadKey(37.7608648, -122.4153602, minZoom);
string quadSeattle = proj.latlngToQuadKey(47.6059903, -122.3292994, minZoom);
string quadChicago = proj.latlngToQuadKey(41.8814234, -87.6292672, minZoom);
string quadAtlanta = proj.latlngToQuadKey(33.7515908, -84.3858375, minZoom);
string quadNewYork = proj.latlngToQuadKey(40.7322625, -73.9924373, minZoom);
string quadBoston = proj.latlngToQuadKey(42.3742784, -71.1165778, minZoom);
string quadDetroit = proj.latlngToQuadKey(42.3314207, -83.0458919, minZoom);
string quadAustin = proj.latlngToQuadKey(30.2682476, -97.7417557, minZoom);
string quadDC = proj.latlngToQuadKey(38.9073708, -77.0363579, minZoom);
List <string> quads = new List <string>();
quads.Add(quadDallas);
quads.Add(quadFtWorth);
quads.Add(quadNewYork);
quads.Add(quadHouston);
quads.Add(quadSanFrancisco);
quads.Add(quadLosAngeles);
quads.Add(quadBoston);
quads.Add(quadAustin);
quads.Add(quadAtlanta);
quads.Add(quadChicago);
quads.Add(quadDC);
quads.Add(quadSeattle);
quads.Add(quadDetroit);
foreach (string quad in quads)
{
process(quad, collection, maxZoom);
}
}
void dfw(IMongoCollection <BsonDocument> collection, int minZoom, int maxZoom)
{
GlobalMercator proj = new GlobalMercator();
string quadDallas = proj.latlngToQuadKey(32.7805664, -96.8081442, minZoom);
string quadFtWorth = proj.latlngToQuadKey(32.7586487, -97.3324023, minZoom);
List <string> quads = new List <string>();
quads.Add(quadDallas);
quads.Add(quadFtWorth);
foreach (string quad in quads)
{
process(quad, collection, maxZoom);
}
}