public void CenterAt(String latLong, double zoom)
{
// Center
textBlockLatLong.Text = latLong;
var splitted = latLong.Split(' ');
var latdec = LatLongUtil.ConvertDegreeAngleToDouble(splitted[0]);
var londec = LatLongUtil.ConvertDegreeAngleToDouble(splitted[1]);
LatLongUtil.TranslateTransform.X = -londec;
LatLongUtil.TranslateTransform.Y = LatLongUtil.LatitudeToY(latdec);
// Set zoom
LatLongUtil.ScaleTransform.ScaleX = zoom;
LatLongUtil.ScaleTransform.ScaleY = zoom;
textBlockZoom.Text = zoom.ToString("###0.00");
// Now centered at upper-left corner, center at the windows center
var dragVector = new Point(ActualWidth / 2 / LatLongUtil.ScaleTransform.ScaleX, ActualHeight / 2 / LatLongUtil.ScaleTransform.ScaleY);
LatLongUtil.TranslateTransform.X += dragVector.X;
LatLongUtil.TranslateTransform.Y += dragVector.Y;
DrawLines();
}
public void TestLatitudeToY()
{
var y = LatLongUtil.LatitudeToY(55.6);
}
public void TestYToLatIsInverseOfLatToY()
{
Assert.AreEqual(20.0, LatLongUtil.LatitudeToY(LatLongUtil.YToLatitude(20)), 0.0001);
}