fr.cnes.sirius.patrius.bodies

Interface EllipsoidBodyShape

All Superinterfaces:

BodyShape, GeometricBodyShape, PVCoordinatesProvider, Serializable

All Known Implementing Classes:

ExtendedOneAxisEllipsoid, ProjectionEllipsoid

public interface EllipsoidBodyShape
extends GeometricBodyShape

Extended interface for spheroid model to represent celestial bodies shape : extends the GeometricBodyShape interface by adding getters to access the spheroid parameters.

Since:

4.3

See Also:

GeometricBodyShape

Nested Class Summary

Nested classes/interfaces inherited from interface fr.cnes.sirius.patrius.bodies.GeometricBodyShape

GeometricBodyShape.MarginType

Field Summary

Fields inherited from interface fr.cnes.sirius.patrius.bodies.BodyShape

EPS_ALTITUDE

Method Summary

Modifier and Type	Method and Description
double	getConjugateRadius() Return conjugate radius (minor semi axis)
IEllipsoid	getEllipsoid() Return the spheroid object
double	getEquatorialRadius() Get the equatorial radius of the body.
double	getFlattening() Return the flattening
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.
Vector3D	getNormal(Vector3D point) Return the normal vector to the surface from the ellipsoid
double	getTransverseRadius() Return transverse radius (major semi axis)

Methods inherited from interface fr.cnes.sirius.patrius.bodies.GeometricBodyShape

distanceTo, getIntersectionPoints, getName, resize

Methods inherited from interface fr.cnes.sirius.patrius.bodies.BodyShape

getBodyFrame, getIntersectionPoint, getIntersectionPoint, transform, transform

Methods inherited from interface fr.cnes.sirius.patrius.orbits.pvcoordinates.PVCoordinatesProvider

getNativeFrame, getPVCoordinates

Method Detail

getEquatorialRadius

double getEquatorialRadius()

Get the equatorial radius of the body.

Returns:

equatorial radius of the body (m)

getTransverseRadius

double getTransverseRadius()

Return transverse radius (major semi axis)

Returns:

transverse radius

getConjugateRadius

double getConjugateRadius()

Return conjugate radius (minor semi axis)

Returns:

conjugate radius

getLocalRadius

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

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 GeometricBodyShape

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

Throws:

PatriusException - if the PVCoordinatesProvider computation fails

getFlattening

double getFlattening()

Return the flattening

Returns:

fIn

getNormal

Vector3D getNormal(Vector3D point)

Return the normal vector to the surface from the ellipsoid

Parameters:

point - Point as a Vector3D in local basis

Returns:

the normal vector in local basis

getEllipsoid

IEllipsoid getEllipsoid()

Return the spheroid object

Returns:

the spheroid