org.lsst.ccs.subsystem.shutter.sim

Class PredictedPosition

java.lang.Object

org.lsst.ccs.subsystem.shutter.sim.PredictedPosition

All Implemented Interfaces:

Comparable<TimeOrdered>, TimeOrdered

public class PredictedPosition
extends Object
implements TimeOrdered

A data point in the prediction of a blade set trajectory. Each point contains a time, acceleration value, velocity value and position value. Times are absolute timestamps. Positions are measured in normalized units where zero is the home position and 1.0 the fully extended position.

Instances are immutable.

Author:

azemoon, tether

Constructor Summary

Constructors

Constructor and Description
PredictedPosition(org.lsst.ccs.utilities.taitime.CCSTimeStamp time, double acceleration, double velocity, double position) Constructs an instance from the field values.

Method Summary

Modifier and Type	Method and Description
double	getAcceleration() Gets the acceleration in units of 1/sec/sec.
double	getPosition() Gets the position.
org.lsst.ccs.utilities.taitime.CCSTimeStamp	getTime() Gets the time of the sample.
double	getVelocity() Gets the velocity in units of 1/sec.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.lsst.ccs.subsystem.shutter.common.TimeOrdered

compareTo, timeDiff, timeDiff

Constructor Detail

PredictedPosition

public PredictedPosition(org.lsst.ccs.utilities.taitime.CCSTimeStamp time,
                         double acceleration,
                         double velocity,
                         double position)

Constructs an instance from the field values.

Parameters:

time - the time at which this point was generated.

acceleration - the second time derivative of the normalized position.

velocity - the rate of change of the normalized position.

position - the normalized position.

Method Detail

getPosition

public double getPosition()

Gets the position.

Returns:

the position

getTime

public org.lsst.ccs.utilities.taitime.CCSTimeStamp getTime()

Gets the time of the sample.

Specified by:

getTime in interface TimeOrdered

Returns:

the time

getAcceleration

public double getAcceleration()

Gets the acceleration in units of 1/sec/sec.

Returns:

the acceleration

getVelocity

public double getVelocity()

Gets the velocity in units of 1/sec.

Returns:

the velocity