//LocationCollection
//public static bool IsLocationInComplexPolygon(List<Location> mainPolygon, List<List<Location>> holes, Location checkPoint)
public static bool IsLocationInComplexPolygon(LocationCollection mainPolygon, List<LocationCollection> holes, Location checkPoint)
{
if (checkPoint != null)
{
// check if point is inside boundary box
double minX = mainPolygon[0].Latitude;
double maxX = mainPolygon[0].Latitude;
double minY = mainPolygon[0].Longitude;
double maxY = mainPolygon[0].Longitude;
foreach (var q in mainPolygon)
{
minX = Math.Min(q.Latitude, minX);
maxX = Math.Max(q.Latitude, maxX);
minY = Math.Min(q.Longitude, minY);
maxY = Math.Max(q.Longitude, maxY);
}
if (checkPoint.Latitude < minX || checkPoint.Latitude > maxX || checkPoint.Longitude < minY || checkPoint.Longitude > maxY)
{
// point is not inside boundary box, do not continue
return false;
}
// check if point is inside main polygon
var result = IsLocationInPolygon(mainPolygon, checkPoint);
// point is not inside main polygon, do not continue
if (result == false) return false;
// check if point is not inside of any hole
if (holes != null)
{
foreach (var holePolygon in holes)
{
var holeResult = IsLocationInPolygon(holePolygon, checkPoint);
if (holeResult)
{
// point is inside hole, that means it doesn't belong to complex polygon, return false
return false;
}
}
}
// if all tests passed then point is inside Polygon.
return true;
}
else
{
return false;
}
}
//public static bool IsLocationInPolygon(List<Location> polygon, Location checkPoint)
public static bool IsLocationInPolygon(LocationCollection polygon, Location checkPoint)
{
List<double> xList = new List<double>();
List<double> yList = new List<double>();
int sideCount = -1;
foreach (var location in polygon)
{
sideCount++;
xList.Add(location.Latitude);
yList.Add(location.Longitude);
}
return pointInPolygon(sideCount, xList.ToArray(), yList.ToArray(), checkPoint.Latitude, checkPoint.Longitude);
}
public static List<MapPolyline> ReadPolylineData(string stringData, string LayerName)
{
List<MapPolyline> Polylines = new List<MapPolyline>();
string aLine = null;
int polyIterator = 0;
var polydata = new { AttributeData = "", XData = "", YData = "" }; // sample
var polyList = ListFactory.MakeList(polydata);
string attrDat = null; string xDat = null; string yDat = null;
StringReader strReader = new StringReader(stringData);
while (true)
{
aLine = strReader.ReadLine();
if (aLine != null)
{
polyIterator++;
polyIterator = polyIterator > 3 ? 1 : polyIterator;
switch (polyIterator)
{
case 1:
attrDat = aLine;
break;
case 2:
xDat = aLine;
break;
case 3:
yDat = aLine;
polyList.Add(new { AttributeData = attrDat, XData = xDat, YData = yDat });
attrDat = null; xDat = null; yDat = null;
break;
}
}
else
{
//process all the data
if (polyList.Count > 1)
{
foreach (var polyDatElem in polyList)
{
MapPolyline polyline = new MapPolyline();
polyline.Locations = new LocationCollection();
string[] attVals = polyDatElem.AttributeData.Split(','); // not used for now, use later for lineweight an annotation
string[] xVals = polyDatElem.XData.Split(',');
string[] yVals = polyDatElem.YData.Split(',');
if (xVals.Length == yVals.Length)
{
for (int i = 0; i < xVals.Length; i++)
{
double x;
double y;
if (Double.TryParse(xVals[i], out x) && Double.TryParse(yVals[i], out y)) // if done, then is a number
{
Location thisLoc = new Location(x, y);
polyline.Locations.Add(thisLoc);
}
}
Polylines.Add(polyline);
}
else
{
throw new Exception("Number of X coordinates and Y coordinates in data does not match");
}
}
}
break;
}
}
return Polylines;
}
private static LocationCollection GetLocationData(string coordinateStringData)
{
LocationCollection locations = new LocationCollection();
string[] coordVals = coordinateStringData.Split(',');
int numberOfCoordEntries = coordVals.Length;
double Latitude, Longitude;
if ( numberOfCoordEntries % 2 == 0 )
{
for (int i = 0; i < coordVals.Length; i++)
{
if (i % 2 == 0)
{
Latitude = double.Parse(coordVals[i], CultureInfo.InvariantCulture);
Longitude = double.Parse(coordVals[i + 1], CultureInfo.InvariantCulture);
Location l = new Location(Latitude, Longitude);
locations.Add(l);
}
}
}
return locations;
}
