public PointD FromLatLngToPoint(GpsPoint gps)
{
var x = PixelOrigin.X + gps.Longitude * PixelsPerLonDegree;
var siny = Bound(Math.Sin(DegreesToRadians(gps.Latitude)), -0.9999, 0.9999);
var y = PixelOrigin.Y + 0.5 * Math.Log((1 + siny) / (1 - siny)) * -PixelsPerLonRadian;
return(new PointD(x, y));
}
private void button5_Click(object sender, EventArgs e)
{
//map.Points.Clear();
map.Latitude = Convert.ToDouble(txtCenterLat.Text);
map.Longitude = Convert.ToDouble(txtCenterLng.Text);
relativeCenter = prj.FromLatLngToPoint(new GpsPoint(Convert.ToDouble(txtCenterLat.Text), Convert.ToDouble(txtCenterLng.Text)));
var scale = Math.Pow(2, map.Zoom);
var pointSW = new PointD((relativeCenter.X - (640.0 / 2.0) / scale), (relativeCenter.Y + (640.0 / 2.0) / scale));
AddDebug(Color.Black, pointSW);
var latLonSW = prj.FromPointToLatLong(pointSW);
var pointNE = new PointD((relativeCenter.X + (640.0 / 2) / scale), (relativeCenter.Y - (640.0 / 2) / scale));
AddDebug(Color.Red, pointNE);
var latLonNE = prj.FromPointToLatLong(pointNE);
lblLat.Text = latLonSW.Latitude.ToString();
lblLng.Text = latLonSW.Longitude.ToString();
var diffY = Math.Abs(latLonSW.Latitude - latLonNE.Latitude); // latitude
var diffX = Math.Abs(latLonSW.Longitude - latLonNE.Longitude); // longitude
stepPerX = diffX / 640.0;
stepPerY = diffY / 640.0;
leftBottomCorner = latLonSW;
map.Points.AddRange(new List <GpsPoint>()
{
latLonSW, latLonNE
});
if (originalLines.Count > 0)
{
var order = true;
foreach (var line in originalLines)
{
var p1 = new GpsPoint((leftBottomCorner.Latitude + (640 - (line.P1.Y + offsetY)) * stepPerY),
(leftBottomCorner.Longitude + ((line.P1.X + offsetX)) * stepPerX));
var p2 = new GpsPoint((leftBottomCorner.Latitude + (640 - (line.P2.Y + offsetY)) * stepPerY),
(leftBottomCorner.Longitude + ((line.P2.X + offsetX)) * stepPerX));
/*var longitude = (leftBottomCorner.Longitude + e.Location.X * stepPerX);
* var latitude = (leftBottomCorner.Latitude + (640 - e.Location.Y) * stepPerY);*/
if (order)
{
map.Path.Add(p1);
map.Path.Add(p2);
}
else
{
map.Path.Add(p2);
map.Path.Add(p1);
}
order = !order;
}
}
googleImage = map.GetImage();
REDRAW_NEEDED = true;
//MessageBox.Show(diffX + " : " + diffY);
}