fr.cnes.sirius.patrius.propagation.events

Class VariableRadiusProvider

java.lang.Object

fr.cnes.sirius.patrius.propagation.events.VariableRadiusProvider

All Implemented Interfaces:

LocalRadiusProvider, Serializable

public class VariableRadiusProvider
extends Object
implements LocalRadiusProvider

Implementation for variable radius providers.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
VariableRadiusProvider(GeometricBodyShape shape) Constructor with a body shape capable of calculating apparent radii.

Method Summary

Modifier and Type	Method and Description
GeometricBodyShape	getBodyShape() Getter for boy shape.
double	getLocalRadius(Vector3D posObserver, Frame frame, AbsoluteDate date, PVCoordinatesProvider occultedBody) Compute the apparent radius (in meters) of the occulting body from the spacecraft (observer) position.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VariableRadiusProvider

public VariableRadiusProvider(GeometricBodyShape shape)

Constructor with a body shape capable of calculating apparent radii.

Parameters:

shape - body shape

Method Detail

getLocalRadius

public double getLocalRadius(Vector3D posObserver,
                             Frame frame,
                             AbsoluteDate date,
                             PVCoordinatesProvider occultedBody)

Compute the apparent radius (in meters) of the occulting body from the spacecraft (observer) position. Given a plane containing the spacecraft (observer) position, the center of the occulting body and the center of the occulted body, and given a line contained within this plane, passing by the spacecraft (observer) position and tangent to the mesh of the occulting body, the apparent radius corresponds to the length of the line starting from the center of the occulting body, perpendicular to the first given line and ending at the intersection of the two lines.

Please notice that this method will for the moment be used only with an instantaneous propagation delay type.

Specified by:

getLocalRadius in interface LocalRadiusProvider

Parameters:

posObserver - the spacecraft (observer) position

frame - the reference frame in which the spacecraft (observer) position is expressed

date - the date at which the spacecraft (observer) position is expressed

occultedBody - the body which is occulted to the spacecraft (observer) by the occulting body

Returns:

the apparent radius (in meters) of the occulting body from the spacecraft (observer) position

getBodyShape

public GeometricBodyShape getBodyShape()

Getter for boy shape.

Returns:

body shape