prajna.geo

Class GeoTrack

java.lang.Object

prajna.geo.GeoTrack

All Implemented Interfaces:

Temporal, Track<GeoCoord>

public class GeoTrack
extends java.lang.Object
implements Track<GeoCoord>

Implementation of a track for a geographic object. In addition to implementing the Track interface, the GeoTrack also provides a utility to convert the track to a GeoPolyline.

Author:

Edward Swing

Constructor Summary

Constructors

Constructor and Description
GeoTrack()

Method Summary

Methods

Modifier and Type	Method and Description
void	addCoord(GeoCoord coord, java.util.Date date) Add a geographic coordinate with an associated date to this track
GeoPolyline	createPolyline() Create a GeoPolyline which represents the path of this track
GeoCoord	getCurrentValue() Returns the current value based upon the current time setting for this track.
java.util.Date	getCurTime() Returns the time for the object
DataRecord	getData() Get the data record associated with this track.
GeoCoord	getValue(java.util.Date time) Get the geographic coordinate in the track at the specified time.
GeoCoord	getValue(int index) Return the value for the given index.
boolean	isTimed() return whether the track is indexed by time.
void	setCurTime(java.util.Date time) Sets the time for the object
void	setData(DataRecord dataRecord) Set the data record associated with this track.

Methods inherited from class java.lang.Object

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

Constructor Detail

GeoTrack

public GeoTrack()

Method Detail

addCoord

public void addCoord(GeoCoord coord,
            java.util.Date date)

Add a geographic coordinate with an associated date to this track

Parameters:

coord - the geographic coordinate

date - the date for the geographic coordinate

createPolyline

public GeoPolyline createPolyline()

Create a GeoPolyline which represents the path of this track

Returns:

a GeoPolyline representing the path of this track

getCurrentValue

public GeoCoord getCurrentValue()

Returns the current value based upon the current time setting for this track.

Specified by:

getCurrentValue in interface Track<GeoCoord>

Returns:

the current value for the track

getCurTime

public java.util.Date getCurTime()

Returns the time for the object

Specified by:

getCurTime in interface Temporal

Returns:

the time for the object

getData

public DataRecord getData()

Get the data record associated with this track.

Specified by:

getData in interface Track<GeoCoord>

Returns:

the data record associated with this track.

getValue

public GeoCoord getValue(java.util.Date time)

Get the geographic coordinate in the track at the specified time. If the track is timed, but the specified time does not match one of the timed coordinates, the value should be interpolated if possible.

Specified by:

getValue in interface Track<GeoCoord>

Parameters:

time - the time to check

Returns:

the value for this track at the specified time

getValue

public GeoCoord getValue(int index)

Return the value for the given index.

Specified by:

getValue in interface Track<GeoCoord>

Parameters:

index - the index of the position

Returns:

the value for the specified index

isTimed

public boolean isTimed()

return whether the track is indexed by time. This implementation returns true as long as the track has values

Specified by:

isTimed in interface Track<GeoCoord>

Returns:

true if the track positions have associated times, false otherwise

setCurTime

public void setCurTime(java.util.Date time)

Sets the time for the object

Specified by:

setCurTime in interface Temporal

Parameters:

time - the time for the object

setData

public void setData(DataRecord dataRecord)

Set the data record associated with this track.

Specified by:

setData in interface Track<GeoCoord>

Parameters:

dataRecord - the data record associated with this track.