public void TestMethod2()
{
int mapZoom = 14;
System.Diagnostics.Debug.WriteLine("tolerance: " + tolerance(mapZoom));
var a = this.lineList[0].Coordinates;
DouglasPeuckerReduction dpr = new DouglasPeuckerReduction(a);
List<LatLng> reducedLine = dpr.reduceLine(mapZoom);
//System.Diagnostics.Debug.WriteLine(reducedLined[0].Coordinates);
foreach (LatLng latlng in this.lineList[0].Coordinates) {
if (!reducedLine.Contains(latlng))
System.Diagnostics.Debug.WriteLine("Removed: " + latlng.ToString());
}
foreach (LatLng latlng in reducedLine)
System.Diagnostics.Debug.WriteLine("Kept: " + latlng.ToString());
}
public IList<Line> getPoints(string vendor, decimal bottomLeftLat, decimal bottomLeftLng, decimal topRightLat, decimal topRightLng, int zoom)
{
//double tolerance = Math.Pow(zoom, -(zoom / 5));
IList<Line> coordinates;
IList<Line> returnLine;
coordinates = returnLine = new List<Line>();
if (vendor.Equals("level3"))
coordinates = this.svc.getPoints(vendor, bottomLeftLat, bottomLeftLng, topRightLat, topRightLng);
else {
if (vendorPoints != null && vendorPoints.Data != null)
vendorPoints.Data.TryGetValue(vendor, out coordinates);
if (vendorPoints == null)
vendorPoints = new ApplicationStore<Dictionary<string, IList<Line>>>(MainFactory.getCacheExpiration(), new Dictionary<string, IList<Line>>());
if (coordinates == null || coordinates.Count() < 1) {
coordinates = this.svc.getPoints(vendor, (decimal)26.4, (decimal)-132.1, (decimal)49.4, (decimal)-59.1);
if (!vendorPoints.Data.ContainsKey(vendor)) {
vendorPoints.Data.Add(vendor, coordinates);
HttpContext.Current.Application["gisFiber"] = vendorPoints;
}
}
}
if (zoom <= 12) {
foreach (Line line in coordinates) {
DouglasPeuckerReduction dpr = new DouglasPeuckerReduction(line.Coordinates);
if (!vendor.Equals("level3")) { // if it is a GIS vendor, filter out unnecessary coordinates
if (!isOutsideBounds(line, bottomLeftLat, bottomLeftLng, topRightLat, topRightLng)) {
var l = new Line(line.Name, dpr.reduceLine(zoom));
l.Color = vendorNames.Data[line.Name].ColorHex;
returnLine.Add(l);
}
} else {
var l = new Line(line.Name, dpr.reduceLine(zoom));
l.Color = "#f00";
returnLine.Add(l);
}
}
} else {
if (!vendor.Equals("level3")) { // if it is a GIS vendor, filter out unnecessary coordinates
foreach (Line line in coordinates
.Where(x =>
x.Coordinates.Any(y =>
y.Lat >= bottomLeftLat &&
y.Lat <= topRightLat &&
y.Lng >= bottomLeftLng &&
y.Lng <= topRightLng))) {
var l = new Line(line.Name, line.Coordinates);
l.Color = vendorNames.Data[line.Name].ColorHex;
returnLine.Add(l);
}
} else {
foreach (Line line in coordinates) {
var l = new Line(line.Name, line.Coordinates);
l.Color = "#f00";
returnLine.Add(l);
}
}
}
return returnLine;
}
private IList<ICoordShape> getPolygons(IPolygonSvc svc,
decimal? bottomLeftLat, decimal? bottomLeftLng,
decimal? topRightLat, decimal? topRightLng,
int zoom)
{
IList<ICoordShape> shapeList = null;
//double tolerance = Math.Pow(zoom, -(zoom / 5));
if (bottomLeftLat != null && bottomLeftLng != null && topRightLat != null && topRightLng != null)
shapeList = svc.getPolygons(new LatLng((decimal)bottomLeftLat, (decimal)bottomLeftLng),
new LatLng((decimal)topRightLat, (decimal)topRightLng));
else
shapeList = svc.getPolygons();
if (zoom <= 9) {
foreach (ICoordShape shape in shapeList) {
DouglasPeuckerReduction dpr = new DouglasPeuckerReduction(shape.Coordinates);
shape.Coordinates = dpr.reduceLine(zoom, true);
}
}
return shapeList;
}
