org.orekit.frames

Class InterpolatingTransformProvider

java.lang.Object

org.orekit.frames.InterpolatingTransformProvider

All Implemented Interfaces:

Serializable, TransformProvider

public class InterpolatingTransformProvider
extends Object
implements TransformProvider

Transform provider using thread-safe interpolation on transforms sample.

The interpolation is a polynomial Hermite interpolation, which can either use or ignore the derivatives provided by the raw provider. This means that simple raw providers that do not compute derivatives can be used, the derivatives will be added appropriately by the interpolation process.

Author:

Luc Maisonobe

See Also:

GenericTimeStampedCache, Serialized Form

Constructor Summary

Constructors

Constructor and Description
InterpolatingTransformProvider(TransformProvider rawProvider, boolean useVelocities, boolean useRotationRates, AbsoluteDate earliest, AbsoluteDate latest, int gridPoints, double step, int maxSlots, double maxSpan, double newSlotInterval) Deprecated. as of 7.0, replaced with InterpolatingTransformProvider(TransformProvider, CartesianDerivativesFilter, AngularDerivativesFilter, AbsoluteDate, AbsoluteDate, int, double, int, double, double)
InterpolatingTransformProvider(TransformProvider rawProvider, CartesianDerivativesFilter cFilter, AngularDerivativesFilter aFilter, AbsoluteDate earliest, AbsoluteDate latest, int gridPoints, double step, int maxSlots, double maxSpan, double newSlotInterval) Simple constructor.

Method Summary

Methods

Modifier and Type	Method and Description
int	getGridPoints() Get the number of interpolation grid points.
TransformProvider	getRawProvider() Get the underlying provider for raw (non-interpolated) transforms.
double	getStep() Get the grid points time step.
Transform	getTransform(AbsoluteDate date) Get the Transform corresponding to specified date.

Methods inherited from class java.lang.Object

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

Constructor Detail

InterpolatingTransformProvider

@Deprecated
public InterpolatingTransformProvider(TransformProvider rawProvider,
                                         boolean useVelocities,
                                         boolean useRotationRates,
                                         AbsoluteDate earliest,
                                         AbsoluteDate latest,
                                         int gridPoints,
                                         double step,
                                         int maxSlots,
                                         double maxSpan,
                                         double newSlotInterval)

Deprecated. as of 7.0, replaced with InterpolatingTransformProvider(TransformProvider, CartesianDerivativesFilter, AngularDerivativesFilter, AbsoluteDate, AbsoluteDate, int, double, int, double, double)

Simple constructor.

Parameters:

rawProvider - provider for raw (non-interpolated) transforms

useVelocities - if true, use sample transforms velocities, otherwise ignore them and use only positions

useRotationRates - if true, use sample points rotation rates, otherwise ignore them and use only rotations

earliest - earliest supported date

latest - latest supported date

gridPoints - number of interpolation grid points

step - grid points time step

maxSlots - maximum number of independent cached time slots in the time-stamped cache

maxSpan - maximum duration span in seconds of one slot in the time-stamped cache

newSlotInterval - time interval above which a new slot is created in the time-stamped cache

InterpolatingTransformProvider

public InterpolatingTransformProvider(TransformProvider rawProvider,
                              CartesianDerivativesFilter cFilter,
                              AngularDerivativesFilter aFilter,
                              AbsoluteDate earliest,
                              AbsoluteDate latest,
                              int gridPoints,
                              double step,
                              int maxSlots,
                              double maxSpan,
                              double newSlotInterval)

Simple constructor.

Parameters:

rawProvider - provider for raw (non-interpolated) transforms

cFilter - filter for derivatives from the sample to use in interpolation

aFilter - filter for derivatives from the sample to use in interpolation

earliest - earliest supported date

latest - latest supported date

gridPoints - number of interpolation grid points

step - grid points time step

maxSlots - maximum number of independent cached time slots in the time-stamped cache

maxSpan - maximum duration span in seconds of one slot in the time-stamped cache

newSlotInterval - time interval above which a new slot is created in the time-stamped cache

Method Detail

getRawProvider

public TransformProvider getRawProvider()

Get the underlying provider for raw (non-interpolated) transforms.

Returns:

provider for raw (non-interpolated) transforms

getGridPoints

public int getGridPoints()

Get the number of interpolation grid points.

Returns:

number of interpolation grid points

getStep

public double getStep()

Get the grid points time step.

Returns:

grid points time step

getTransform

public Transform getTransform(AbsoluteDate date)
                       throws OrekitException

Get the Transform corresponding to specified date.

Specified by:

getTransform in interface TransformProvider

Parameters:

date - current date

Returns:

transform at specified date

Throws:

OrekitException - if transform cannot be computed at given date