Waypoint Class

Defines the characteristics at a waypoint.

Inheritance Hierarchy

SystemObject
AGI.Foundation.PropagatorsWaypoint

Namespace: AGI.Foundation.Propagators
Assembly: AGI.Foundation.Models (in AGI.Foundation.Models.dll) Version: 24.3.420.0 (24.3.420.0)

Syntax

C++

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public class Waypoint : IEquatable<Waypoint>

Public Class Waypoint
	Implements IEquatable(Of Waypoint)

public ref class Waypoint : IEquatable<Waypoint^>

type Waypoint =  
    class
        interface IEquatable<Waypoint>
    end

The Waypoint type exposes the following members.

Constructors

	Name	Description
	Waypoint(JulianDate, Cartographic, Double, Double)	Initializes a new instance.
	Waypoint(Waypoint, Ellipsoid, Cartographic, Double)	Initializes a new instance.

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Properties

	Name	Description
	Date	Gets the date at which the waypoint is achieved.
	GroundSpeed	Gets the speed tangent to the ellipsoid surface.
	Location	Gets the planetodetic position at the waypoint.
	RateOfClimb	Gets the velocity normal to the ellipsoid surface.

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Methods

	Name	Description
	Equals(Object)	Indicates whether another object is exactly equal to this instance. (Overrides ObjectEquals(Object).)
	Equals(Waypoint)	Indicates whether another instance of this type is equal to this instance. Strict equality is not enforced for waypoints at geographic poles since the longitude coordinate is undefined at these locations.
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetHashCode	Returns a hash code for this instance, which is suitable for use in hashing algorithms and data structures like a hash table. (Overrides ObjectGetHashCode.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Operators

	Name	Description
	Equality	Returns if the two instances are exactly equal.
	Inequality	Returns if the two instances are not exactly equal.

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Examples

The following example shows how to use the WaypointPropagator to move between waypoints at a constant velocity:

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EarthCentralBody earth = CentralBodiesFacet.GetFromContext().Earth;
const double constantVelocity = 80.0;

JulianDate startDate = new JulianDate(new GregorianDate(2007, 12, 6, 12, 0, 0));

// Create the start point of our route with a particular date, location, and velocity.
Cartographic point1 = new Cartographic(Trig.DegreesToRadians(-77.28), Trig.DegreesToRadians(39.94), 3000.0);
Waypoint waypoint1 = new Waypoint(startDate, point1, constantVelocity, 0.0);

// Create the next two waypoints from a location, the same velocity, and the previous waypoint.
Cartographic point2 = new Cartographic(Trig.DegreesToRadians(-79.59), Trig.DegreesToRadians(38.81), 3000.0);
Waypoint waypoint2 = new Waypoint(waypoint1, earth.Shape, point2, constantVelocity);

Cartographic point3 = new Cartographic(Trig.DegreesToRadians(-81.44), Trig.DegreesToRadians(39.69), 3000.0);
Waypoint waypoint3 = new Waypoint(waypoint2, earth.Shape, point3, constantVelocity);

// Construct the waypoint propagator with all of the waypoints
List<Waypoint> waypoints = new List<Waypoint>();
waypoints.Add(waypoint1);
waypoints.Add(waypoint2);
waypoints.Add(waypoint3);
WaypointPropagator propagator = new WaypointPropagator(earth, waypoints);

// The propagator can then be used to create a Point that represents the position and velocity of the
// vehicle moving between the waypoints.
Point propagatedPoint = propagator.CreatePoint();

// Or an entire set of ephemeris can be computed at a specified time step.
DateMotionCollection<Cartesian> ephemeris = propagator.Propagate(waypoint1.Date, waypoint3.Date, Duration.FromSeconds(60.0), 1, propagator.ReferenceFrame);

Reference

AGI.Foundation.Propagators Namespace