fr.cnes.sirius.patrius.bodies.bsp.spice

Class SpiceChangeFrame

java.lang.Object

fr.cnes.sirius.patrius.bodies.bsp.spice.SpiceChangeFrame

public final class SpiceChangeFrame
extends Object

This class is made to support changes among a standard set of inertial coordinate reference frames.

This class is based on the CHGIRF.for file from the SPICE library.

Since:

4.11

Author:

T0281925

Field Summary

Fields

Modifier and Type	Field and Description
static int	STATE_LENGTH Length of an state array.

Method Summary

Modifier and Type	Method and Description
static Array2DRowRealMatrix	frameRotationMatrix(int refA, int refB) Compute the matrix needed to rotate vectors between two standard inertial reference frames.
static int	intertialRefFrameNumber(String name) Return the index of one of the standard inertial reference frames supported by IRFROT.

Methods inherited from class java.lang.Object

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

Field Detail

STATE_LENGTH

public static final int STATE_LENGTH

Length of an state array.

See Also:

Constant Field Values

Method Detail

intertialRefFrameNumber

public static int intertialRefFrameNumber(String name)

Return the index of one of the standard inertial reference frames supported by IRFROT.

Based on the IRFNUM routine from the SPICE library

Parameters:

name - Name of standard inertial reference frame

Returns:

integer containing the index of the frame

frameRotationMatrix

public static Array2DRowRealMatrix frameRotationMatrix(int refA,
                                                       int refB)
                                                throws PatriusException

Compute the matrix needed to rotate vectors between two standard inertial reference frames.

This method is based on the routine IRFROT of the SPICE library.

Parameters:

refA - Initial reference frame

refB - Desired reference frame

Returns:

the rotation matrix to go from A to B

Throws:

PatriusException - if any of the input frames is not recognized