internal void DrawLine(SKMapPosition start, SKMapPosition end, SKPaint paint, bool shortLine = true)
{
Tuple <SKMapPosition, SKMapPosition> line = new Tuple <SKMapPosition, SKMapPosition>(start, end);
Tuple <SKPoint, SKPoint> canvasLine = ConvertLineToLocal(line, shortLine);
_Canvas.DrawLine(canvasLine.Item1.X, canvasLine.Item1.Y, canvasLine.Item2.X, canvasLine.Item2.Y, ScaleStrokeForPlatform(paint));
}
public static CLLocationCoordinate2D ToLocationCoordinate(this SKMapPosition self)
{
Position position = new Position(self.Latitude,
(self.Longitude + MapSpanExtensions.MaxLongitude) %
MapSpanExtensions.WorldLongitude +
MapSpanExtensions.MinLongitude);
return(position.ToLocationCoordinate());
}
public static Point ToMercator(this SKMapPosition gpsCoords)
{
double x = (gpsCoords.Longitude + MapSpanExtensions.MaxLongitude) / MapSpanExtensions.WorldLongitude * MercatorMapSize;
double y = MercatorCenterOffset -
MercatorRadius *
Math.Log((1 + Math.Sin(gpsCoords.Latitude * Math.PI / 180.0)) /
(1 - Math.Sin(gpsCoords.Latitude * Math.PI / 180.0))) /
2.0;
return(new Point(x, y));
}
public static Rectangle ToMercator(this SKMapSpan gpsSpan)
{
SKMapPosition topLeftGps = gpsSpan.TopLeft;
SKMapPosition bottomRightGps = gpsSpan.BottomRight;
Point canvasTopLeft = topLeftGps.ToMercator();
Point canvasBottomRight = bottomRightGps.ToMercator();
return(new Rectangle(canvasTopLeft.X,
canvasTopLeft.Y,
canvasBottomRight.X - canvasTopLeft.X,
canvasBottomRight.Y - canvasTopLeft.Y));
}
public static LatLng ToLatLng(this SKMapPosition self)
{
return(new LatLng(self.Latitude, self.Longitude));
}
public static Position ToGps(this Point mercatorCoords)
{
SKMapPosition mapPosition = mercatorCoords.ToSKMapPosition();
return(new Position(mapPosition.Latitude, mapPosition.Longitude));
}
