/// <summary>
/// Extension method for parsing trajectory.
/// </summary>
/// <param name="trajectoryNode">Node with trajectory</param>
/// <returns>Trajectory from xml.</returns>
public static Trajectory ParseTrajectory(this XmlNode trajectoryNode)
{
Direction direction;
if (trajectoryNode.FirstChild.Attributes["direction"] == null)
{
direction = Direction.CLOCKWISE;
}
else
{
string directionString = trajectoryNode.FirstChild.Attributes["direction"].Value;
if (directionString.Equals("clockwise"))
{
direction = Direction.CLOCKWISE;
}
else
{
direction = Direction.COUNTERCLOCKWISE;
}
}
Trajectory trajectory = null;
switch (trajectoryNode.FirstChild.Name.ToLowerInvariant())
{
case "stacionary":
int x = trajectoryNode.FirstChild.Attributes["x"].IntValue();
int y = trajectoryNode.FirstChild.Attributes["y"].IntValue();
trajectory = new Stacionary(x, y);
break;
case "circularorbit":
{
int radius = trajectoryNode.FirstChild.Attributes["radius"].IntValue();
double initialAngle = trajectoryNode.FirstChild.Attributes["initialAngle"].DoubleValue();
int period = trajectoryNode.FirstChild.Attributes["period"].IntValue();
trajectory = new CircularOrbit(radius, period, direction, initialAngle);
}
break;
case "ellipticorbit":
{
int a = trajectoryNode.FirstChild.Attributes["a"].IntValue();
int b = trajectoryNode.FirstChild.Attributes["b"].IntValue();
double rotationAngle = trajectoryNode.FirstChild.Attributes["angle"].DoubleValue();
double initialAngle = trajectoryNode.FirstChild.Attributes["initialAngle"].DoubleValue();
int period = trajectoryNode.FirstChild.Attributes["period"].IntValue();
trajectory = new EllipticOrbit(new Point2d(0.0, 0.0), a, b, rotationAngle, period, direction, initialAngle);
}
break;
default:
throw new XmlException("Unexpected trajectory.");
}
return(trajectory);
}
public void ParseTrajectoryTest_Stacionary()
{
//string[] trajectoryParams = { "velocity", "5", "direction", "clockwise" };
string[] pointParams = { "velocity", "5", "direction", "clockwise", "x", "10", "y", "20" };
Stacionary expected = new Stacionary(10, 20);
XmlNode trajectoryNode = this.GenerateTrajectoryNode("stacionary", pointParams);
Trajectory trajectory = trajectoryNode.ParseTrajectory();
Assert.AreEqual(expected, trajectory);
}
/// <summary>
/// Metoda pro vytvoreni elementu z trajektorie
/// </summary>
/// <param name="trajectory">Trajektorie pro zpracovani</param>
/// <returns>Element s trajektorii</returns>
private static XElement TrajectoryToElement(Trajectory trajectory)
{
XElement trajectoryElement = new XElement("trajectory");
XElement trajectoryShapeElement = null;
if (trajectory is CircularOrbit)
{
CircularOrbit circOrbit = (CircularOrbit)trajectory;
trajectoryShapeElement = new XElement("circularOrbit");
trajectoryShapeElement.Add(new XAttribute("direction", circOrbit.Direction.ToString().ToLower()));
trajectoryShapeElement.Add(new XAttribute("period", circOrbit.PeriodInSec));
String initialAngle = Math.Round(MathUtil.RadianToDegree(circOrbit.InitialAngleRad)).ToString("0.0", CultureInfo.InvariantCulture);
trajectoryShapeElement.Add(new XAttribute("initialAngle", initialAngle));
trajectoryShapeElement.Add(new XAttribute("radius", circOrbit.Radius));
}
else if (trajectory is EllipticOrbit)
{
EllipticOrbit elliOrbit = (EllipticOrbit)trajectory;
trajectoryShapeElement = new XElement("ellipticOrbit");
trajectoryShapeElement.Add(new XAttribute("direction", elliOrbit.Direction.ToString().ToLower()));
trajectoryShapeElement.Add(new XAttribute("period", elliOrbit.PeriodInSec));
trajectoryShapeElement.Add(new XAttribute("a", elliOrbit.A));
trajectoryShapeElement.Add(new XAttribute("b", elliOrbit.B));
String angle = Math.Round(MathUtil.RadianToDegree(elliOrbit.RotationAngleInRad)).ToString("0.0", CultureInfo.InvariantCulture);
trajectoryShapeElement.Add(new XAttribute("angle", angle));
String initialAngle = Math.Round(MathUtil.RadianToDegree(elliOrbit.InitialAngleRad)).ToString("0.0", CultureInfo.InvariantCulture);
trajectoryShapeElement.Add(new XAttribute("initialAngle", initialAngle));
}
else if (trajectory is Stacionary)
{
Stacionary stacOrbit = (Stacionary)trajectory;
trajectoryShapeElement = new XElement("stacionary");
trajectoryShapeElement.Add(new XAttribute("x", stacOrbit.X));
trajectoryShapeElement.Add(new XAttribute("y", stacOrbit.Y));
}
trajectoryElement.Add(trajectoryShapeElement);
return(trajectoryElement);
}
