public void TestCalculateLookAt()
{
Placemark placemark = null;
Assert.That(() => placemark.CalculateLookAt(),
Throws.TypeOf <ArgumentNullException>());
placemark = new Placemark();
Assert.That(placemark.CalculateLookAt(), Is.Null); // Nothing to look at
var point = new Point
{
Coordinate = new Vector(37, -122)
};
placemark.Geometry = point;
LookAt lookat = placemark.CalculateLookAt();
Assert.That(lookat, Is.Not.Null);
Assert.That(lookat.Latitude, Is.EqualTo(37.0));
Assert.That(lookat.Longitude, Is.EqualTo(-122.0));
Assert.That(lookat.Range, Is.EqualTo(1000.0));
Assert.That(lookat.AltitudeMode, Is.EqualTo(AltitudeMode.RelativeToGround));
Assert.That(lookat.Altitude, Is.Null);
Assert.That(lookat.Heading, Is.Null);
Assert.That(lookat.Tilt, Is.Null);
var line = new LineString
{
Coordinates = new CoordinateCollection
{
new Vector(37, -122),
new Vector(38, -121)
}
};
placemark = new Placemark
{
Geometry = line
};
lookat = placemark.CalculateLookAt();
Assert.That(lookat.Latitude, Is.EqualTo(37.5));
Assert.That(lookat.Longitude, Is.EqualTo(-121.5));
Assert.That(lookat.Range, Is.EqualTo(135123.4361).Within(0.0001));
}
public static string getKMLstring(Color lapColor,
List <double> latitudes,
List <double> longitudes,
List <double> altitudes = null)
{
// make sure the parameters are of the same length
if (((altitudes != null) && !(latitudes.Count == longitudes.Count && altitudes.Count == longitudes.Count)) ||
!(latitudes.Count == longitudes.Count))
{
throw new Exception("The length of the parameters must match");
}
// Create the KML stuff
Kml kml = new Kml();
kml.AddNamespacePrefix("gx", "http://www.google.com/kml/ext/2.2");
Document doc = new Document();
Style style = new Style();
Placemark pMark = new Placemark();
LineString ls = new LineString();
ls.Coordinates = new CoordinateCollection();
// Define the style
style.Line = new LineStyle();
style.Id = "redline";
style.Line.Color = new Color32(lapColor.A, lapColor.B, lapColor.G, lapColor.R);
//style.Line.ColorMode = ColorMode.Normal;
style.Line.Width = 2;
// Define a new style
Style style2 = new Style();
style2.Line = new LineStyle();
style2.Id = "blueline";
style2.Line.Color = new Color32(Colors.LightBlue.A, Colors.LightBlue.B, Colors.LightBlue.G, Colors.LightBlue.R);
//style2.Line.ColorMode = ColorMode.Normal;
style2.Line.Width = 2;
// add style to placemark
pMark.StyleUrl = new Uri("#redline", UriKind.Relative);
// loop through the lines in the file
if (altitudes != null)
{
ls.AltitudeMode = AltitudeMode.Absolute;
for (int i = 0; i < latitudes.Count; i++)
{
ls.Coordinates.Add(new Vector(latitudes[i], longitudes[i], altitudes[i]));
}
}
else // no altitude provided
{
for (int i = 0; i < latitudes.Count; i++)
{
ls.Coordinates.Add(new Vector(latitudes[i], longitudes[i]));
}
}
// Set properties on the line string
ls.Extrude = false;
ls.Tessellate = true;
// Add the line string to the placemark
pMark.Geometry = ls;
// Generate a LookAt object to center the view on the placemark
doc.Viewpoint = pMark.CalculateLookAt();
// Add the placemark and style to the document
doc.AddFeature(pMark);
doc.AddStyle(style);
doc.AddStyle(style2);
// Add the document to the kml object
kml.Feature = doc;
// Create the KML file
KmlFile kmlFile = KmlFile.Create(kml, false);
//TODO for debugging purposes, save the kml file to test folder.
kmlFile.Save("test.kml");
// Return the KML file as a string
return(kmlFile.SaveString());
}