protected virtual IPolygon <TPolygonHeader> readPolygon(BinaryReader reader, bool closePolygons)
{
var result = getNewPolygon();
result.Header = readPolygonHeader(reader);
var points = new LatLonCoordinates[result.Header.PointsCount];
var lastLongitude = Double.NaN;
for (int i = 0; i < points.Length; i++)
{
var point = readPoint(reader);
if (!Double.IsNaN(lastLongitude) && Math.Abs(point.Longitude - lastLongitude) >= 180)
{
point.Longitude = point.Longitude.FixCoordinate(false);
}
lastLongitude = point.Longitude;
points[i] = point;
}
if (closePolygons && points[0] != points[points.Length - 1])
{
// Make sure the list is closed
var pointsList = new List <LatLonCoordinates>(points);
pointsList.Add(new LatLonCoordinates()
{
Latitude = points[0].Latitude, Longitude = points[0].Longitude
});
points = pointsList.ToArray();
}
result.Points = points;
return(result);
}
/// <summary>Creates an AXPoint from WGS84 lat/lon coordinates. Time is unknown and altitude is not barometric
/// </summary>
/// <param name="latitude"></param>
/// <param name="longitude"></param>
/// <param name="altitude"></param>
/// <returns></returns>
public AXPoint FromLatLonToAXPoint(double latitude, double longitude, double altitude)
{
var llc = new LatLonCoordinates(Datum.GetInstance("WGS84"), latitude, longitude, altitude);
var utmc = llc.ToUtm(Datum.GetInstance(DatumName), UtmZone);
return(new AXPoint(Date.Date, utmc));
}
public virtual PixelCoordinates LatLonToPixel(LatLonCoordinates latLonCoordinates)
{
if (this.Map.RotateReference)
{
double latitudeOffset = latLonCoordinates.Latitude - latLonCoordinates.Latitude.FixCoordinate(true);
double longitudeOffset = latLonCoordinates.Longitude - latLonCoordinates.Longitude.FixCoordinate(false);
if (latitudeOffset != 0 || longitudeOffset != 0)
{
latLonCoordinates = new LatLonCoordinates()
{
Latitude = latLonCoordinates.Latitude - latitudeOffset,
Longitude = latLonCoordinates.Longitude - longitudeOffset
};
}
latLonCoordinates = this.Map.Boundaries.Center.GetNewCoordinates(latLonCoordinates);
if (latitudeOffset != 0 || longitudeOffset != 0)
{
latLonCoordinates.Latitude += latitudeOffset;
latLonCoordinates.Longitude += longitudeOffset;
}
return(new PixelCoordinates()
{
X = this.Map.Size.Width * (latLonCoordinates.Longitude + this.Map.Boundaries.LongitudeHalfSpan) / this.Map.Boundaries.LongitudeSpan,
Y = this.Map.Size.Height * (this.Map.Boundaries.LatitudeHalfSpan - latLonCoordinates.Latitude) / this.Map.Boundaries.LatitudeSpan
});
}
else
{
return(new PixelCoordinates()
{
X = this.Map.Size.Width * (latLonCoordinates.Longitude - this.Map.Boundaries.LeftNotBound) / this.Map.Boundaries.LongitudeSpan,
Y = this.Map.Size.Height * (this.Map.Boundaries.TopNotBound - latLonCoordinates.Latitude) / this.Map.Boundaries.LatitudeSpan
});
}
}
public virtual PixelCoordinates LatLonToPixel(LatLonCoordinates latLonCoordinates)
{
var longitude = latLonCoordinates.Longitude;
var latitude = latLonCoordinates.Latitude;
// TODO: make sure they are "in phase"
if (latitude == 90)
{
latitude -= double.Epsilon;
}
else if (latitude == -90)
{
latitude += double.Epsilon;
}
return(new PixelCoordinates()
{
X = _formulae.LongitudeToX(longitude),
Y = _formulae.LatitudeToY(latitude)
});
}
public virtual LatLonCoordinates PixelToLatLon(PixelCoordinates pixelCoordinates)
{
if (this.Map.RotateReference)
{
var result = new LatLonCoordinates()
{
Longitude = pixelCoordinates.X * this.Map.Boundaries.LongitudeSpan / this.Map.Size.Width - this.Map.Boundaries.LongitudeHalfSpan,
Latitude = this.Map.Boundaries.LatitudeHalfSpan - pixelCoordinates.Y * this.Map.Boundaries.LatitudeSpan / this.Map.Size.Height
};
return(this.Map.Boundaries.Center.GetOldCoordinates(result));
}
else
{
return(new LatLonCoordinates()
{
Longitude = this.Map.Boundaries.LeftNotBound + pixelCoordinates.X * this.Map.Boundaries.LongitudeSpan / this.Map.Size.Width,
Latitude = this.Map.Boundaries.TopNotBound - pixelCoordinates.Y * this.Map.Boundaries.LatitudeSpan / this.Map.Size.Height
});
}
}
private void buttonCoords_Click(object sender, RoutedEventArgs e)
{
var wgs84 = Datum.GetInstance("WGS84");
var ed50 = Datum.GetInstance("European 1950");
var osgb36 = Datum.GetInstance("OSGB36");
Coordinates p1, p2, p3;
Print("From latlon WGS84 to UTM ED50 and back");
p1 = new LatLonCoordinates(wgs84, 41.973256, 2.780310, 87.0);
p2 = p1.ToUtm(ed50);
p3 = p2.ToLatLon(wgs84);
Print(p1.ToString());
Print(p2.ToString());
Print(p3.ToString());
Print("");
Print("From UTM ED50 to UTM WGS84 and back");
p1 = new UtmCoordinates(ed50, "31T", 365000, 4612000, 56);
p2 = p1.ToUtm(wgs84);
p3 = p2.ToUtm(ed50);
Print(p1.ToString());
Print(p2.ToString());
Print(p3.ToString());
Print("");
Print("From UTM ED50 (default zone) to UTM ED50 (different zone) and back");
p1 = new UtmCoordinates(ed50, "31T", 365000, 4612000, 56);
p2 = p1.ToUtm(ed50, "30T");
p3 = p2.ToUtm(ed50);
Print(p1.ToString());
Print(p2.ToString());
Print(p3.ToString());
Print("");
}