prajna.geoviz

Class TimedGeoLayer

java.lang.Object

prajna.geo.GeoLayer

prajna.geoviz.TimedGeoLayer

public class TimedGeoLayer
extends GeoLayer

Extension of a geographic layer which includes temporal components. Shapes added to a TimedGeoLayer may have a time span associated with them, which indicates their period of activity. At a particular moment in time, the geographic shapes which would be displayed include the shapes without a time element, plus those shapes that have a timespan including the particular time.

Author:

Edward Swing

Constructor Summary

Constructors

Constructor and Description
TimedGeoLayer(java.lang.String name) Create a new timed geographic layer.

Method Summary

Methods

Modifier and Type	Method and Description
void	addTimedShape(GeoShape shape, TimeSpan span) Add a timed shape with a specified time span.
void	drawLayer(java.awt.Graphics2D g2, java.util.Date date) Draw this layer into the graphics context.
java.util.List<GeoShape>	getAllShapes() Get the list of shapes for this layer.
java.util.Map<GeoShape,TimeSpan>	getAllTimedShapes() Get the map of all shapes with a time component.
java.util.List<GeoShape>	getShapesAt(java.util.Date date) Get the shapes at a particular date.

Methods inherited from class prajna.geo.GeoLayer

add, addAll, clear, drawLayer, getDrawColor, getFillColor, getGeoBounds, getName, getPickRadius, getRenderStyle, getShapes, isEmpty, isPickable, pickGeo, project, setColors, setDrawColor, setFillColor, setMarkerShape, setName, setPickable, setPickRadius, setRenderStyle, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

TimedGeoLayer

public TimedGeoLayer(java.lang.String name)

Create a new timed geographic layer. This method initializes the GeoLayer with its default behavior

Parameters:

name - the name of the geographic layer

Method Detail

addTimedShape

public void addTimedShape(GeoShape shape,
                 TimeSpan span)

Add a timed shape with a specified time span.

Parameters:

shape - the shape to add

span - the time span when this shape should be visible

drawLayer

public void drawLayer(java.awt.Graphics2D g2,
             java.util.Date date)

Draw this layer into the graphics context. This method first renders all of the non-timed shapes by calling GeoLayer.drawLayer(). It then retrieves all of the shapes which are active at the specified time, and renders them.

Parameters:

g2 - the graphics context to draw into

date - The date to draw timed shapes

getAllShapes

public java.util.List<GeoShape> getAllShapes()

Get the list of shapes for this layer. This returns both the shapes with times and the shapes without times

Returns:

the list of shapes

getAllTimedShapes

public java.util.Map<GeoShape,TimeSpan> getAllTimedShapes()

Get the map of all shapes with a time component.

Returns:

a map of the

getShapesAt

public java.util.List<GeoShape> getShapesAt(java.util.Date date)

Get the shapes at a particular date. This method returns all of the shapes which do not have a time element, plus those shapes which have a time span which includes the specified time.

Parameters:

date - the date to check

Returns:

the list of shapes which are active at the specified date