org.orekit.files.ccsds

Class StreamingAemWriter.AEMSegment

java.lang.Object

org.orekit.files.ccsds.StreamingAemWriter.AEMSegment

All Implemented Interfaces:

OrekitFixedStepHandler

Enclosing class:

StreamingAemWriter

public class StreamingAemWriter.AEMSegment
extends Object
implements OrekitFixedStepHandler

A writer for a segment of an AEM.

Method Summary

Modifier and Type	Method and Description
void	handleStep(SpacecraftState currentState, boolean isLast) Handle the current step.
void	init(SpacecraftState s0, AbsoluteDate t, double step) Initialize step handler at the start of a propagation.
void	writeAttitudeEphemerisLine(TimeStampedAngularCoordinates attitude, boolean isFirst, String attitudeName, RotationOrder rotationOrder) Write a single attitude ephemeris line according to section 4.2.4 and Table 4-4.
void	writeMetadata() Write the ephemeris segment metadata.

Methods inherited from class java.lang.Object

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

Method Detail

writeMetadata

public void writeMetadata()
                   throws IOException

Write the ephemeris segment metadata.

See StreamingAemWriter for a description of how the metadata is set.

Throws:

IOException - if the output stream throws one while writing.

writeAttitudeEphemerisLine

public void writeAttitudeEphemerisLine(TimeStampedAngularCoordinates attitude,
                                       boolean isFirst,
                                       String attitudeName,
                                       RotationOrder rotationOrder)
                                throws IOException

Write a single attitude ephemeris line according to section 4.2.4 and Table 4-4.

Parameters:

attitude - the attitude information for a given date.

isFirst - true if QC is the first element in the attitude data

attitudeName - name of the attitude type

rotationOrder - rotation order

Throws:

IOException - if the output stream throws one while writing.

init

public void init(SpacecraftState s0,
                 AbsoluteDate t,
                 double step)

Initialize step handler at the start of a propagation.

This method is called once at the start of the propagation. It may be used by the step handler to initialize some internal data if needed.

Sets the Keyword.START_TIME and Keyword.STOP_TIME in this segment's metadata if not already set by the user. Then calls writeMetadata() to start the segment.

Specified by:

init in interface OrekitFixedStepHandler

Parameters:

s0 - initial state

t - target time for the integration

step - the duration in seconds of the fixed step. This value is positive even if propagation is backwards.

handleStep

public void handleStep(SpacecraftState currentState,
                       boolean isLast)

Handle the current step..

Specified by:

handleStep in interface OrekitFixedStepHandler

Parameters:

currentState - current state at step time

isLast - if true, this is the last integration step