gov.nasa.worldwind.layers

Class SurfaceImageLayer

java.lang.Object

gov.nasa.worldwind.avlist.AVListImpl

gov.nasa.worldwind.WWObjectImpl

gov.nasa.worldwind.layers.AbstractLayer

gov.nasa.worldwind.layers.RenderableLayer

gov.nasa.worldwind.layers.SurfaceImageLayer

All Implemented Interfaces:

AVList, Disposable, MessageListener, Layer, Restorable, WWObject, PropertyChangeListener, EventListener

public class SurfaceImageLayer
extends RenderableLayer

Displays a collection of local images on the globe.

Note: The view input handlers detect surface images rather than the terrain as the top picked object in SelectEvents and will not respond to the user's attempts at navigation when the cursor is over the image. If this is not the desired behavior, disable picking for the layer containing the surface image.

Field Summary

Fields

Modifier and Type	Field and Description
protected BasicDataRasterReaderFactory	factory
protected ConcurrentHashMap<String,ArrayList<SurfaceImage>>	imageTable
protected ImageTiler	imageTiler

Fields inherited from class gov.nasa.worldwind.layers.RenderableLayer

pickSupport, renderables, renderablesOverride

Constructor Summary

Constructors

Constructor and Description
SurfaceImageLayer()

Method Summary

Modifier and Type	Method and Description
void	addImage(String imagePath) Add an image to the collection, reprojecting it to geographic (latitude & longitude) coordinates if necessary.
void	addImage(String name, BufferedImage image, List<? extends LatLon> corners) Add a BufferedImage to the collection at an explicitly specified location.
void	addImage(String name, BufferedImage image, Sector sector) Add a BufferedImage to the collection at an explicitly specified location.
void	addImage(String imagePath, List<? extends LatLon> corners) Add an image to the collection at an explicitly specified location.
void	addImage(String imagePath, Sector sector) Add an image to the collection and specify its coverage.
BufferedImage	composeImageForSector(Sector sector, int canvasWidth, int canvasHeight, double aspectRatio, BufferedImage image) Create an image for the portion of this layer lying within a specified sector.
void	dispose() Disposes the contents of this layer's internal Renderable collection, but does not remove any elements from that collection.
protected BufferedImage	getBufferedImage(DataRaster raster)
int	getNumImages()
protected DataRaster	openDataRaster(Object src, AVList params)
void	removeImage(String imagePath)
void	setOpacity(double opacity) Opacity is not applied to layers of this type because each renderable typically has its own opacity control.

Methods inherited from class gov.nasa.worldwind.layers.RenderableLayer

addRenderable, addRenderable, addRenderables, clearRenderables, disposeRenderables, doPick, doPick, doPreRender, doPreRender, doRender, doRender, getActiveRenderables, getNumRenderables, getOpacity, getRenderables, onMessage, removeAllRenderables, removeRenderable, setRenderables, toString

Methods inherited from class gov.nasa.worldwind.layers.AbstractLayer

createLayerConfigElements, getDataFileStore, getExpiryTime, getLayerConfigParams, getMaxActiveAltitude, getMaxEffectiveAltitude, getMinActiveAltitude, getMinEffectiveAltitude, getName, getRestorableState, getScale, getScreenCredit, isAtMaxResolution, isEnabled, isLayerActive, isLayerConfigDocument, isLayerInView, isMultiResolution, isNetworkRetrievalEnabled, isPickEnabled, pick, preRender, render, restoreState, setDataFileStore, setEnabled, setExpiryTime, setMaxActiveAltitude, setMinActiveAltitude, setName, setNetworkRetrievalEnabled, setPickEnabled, setScreenCredit

Methods inherited from class gov.nasa.worldwind.WWObjectImpl

propertyChange

Methods inherited from class gov.nasa.worldwind.avlist.AVListImpl

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getBooleanValue, getBooleanValue, getChangeSupport, getDoubleValue, getDoubleValue, getEntries, getIntegerValue, getIntegerValue, getLongValue, getLongValue, getRestorableStateForAVPair, getStringValue, getStringValue, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.nasa.worldwind.avlist.AVList

addPropertyChangeListener, addPropertyChangeListener, clearList, copy, firePropertyChange, firePropertyChange, getEntries, getStringValue, getValue, getValues, hasKey, removeKey, removePropertyChangeListener, removePropertyChangeListener, setValue, setValues

Methods inherited from interface java.beans.PropertyChangeListener

propertyChange

Field Detail

factory

protected BasicDataRasterReaderFactory factory

imageTable

protected ConcurrentHashMap<String,ArrayList<SurfaceImage>> imageTable

imageTiler

protected ImageTiler imageTiler

Constructor Detail

SurfaceImageLayer

public SurfaceImageLayer()

Method Detail

addImage

public void addImage(String imagePath)
              throws IOException

Add an image to the collection, reprojecting it to geographic (latitude & longitude) coordinates if necessary. The image's location is determined from metadata files co-located with the image file. The number, names and contents of these files are governed by the type of the specified image. Location metadata must be available.

If projection information is available and reprojection of the image's projection type is supported, the image will be reprojected to geographic coordinates. If projection information is not available then it's assumed that the image is already in geographic projection.

Only reprojection from UTM is currently provided.

Parameters:

imagePath - the path to the image file.

Throws:

IllegalArgumentException - if the image path is null.

IOException - if an error occurs reading the image file.

IllegalStateException - if an error occurs while reprojecting or otherwise processing the image.

WWRuntimeException - if the image type is unsupported.

addImage

public void addImage(String name,
                     BufferedImage image,
                     List<? extends LatLon> corners)

Add a BufferedImage to the collection at an explicitly specified location. The image is assumed to be in geographic projection (latitude & longitude).

Parameters:

name - a unique name to associate with the image so that it can be subsequently referred to without having to keep a reference to the image itself. Use this name in calls to removeImage(String).

image - the image to add.

corners - the geographic location of the image's corners, specified in order of lower-left, lower-right, upper-right, upper-left.

Throws:

IllegalArgumentException - if the image path is null, the corners list is null, contains null values or fewer than four locations.

WWRuntimeException - if the image type is unsupported.

addImage

public void addImage(String name,
                     BufferedImage image,
                     Sector sector)

Add a BufferedImage to the collection at an explicitly specified location. The image is assumed to be in geographic projection (latitude & longitude).

Parameters:

name - a unique name to associate with the image so that it can be subsequently referred to without having to keep a reference to the image itself. Use this name in calls to removeImage(String).

image - the image to add.

sector - the geographic location of the image.

Throws:

IllegalArgumentException - if the image path or sector is null.

WWRuntimeException - if the image type is unsupported.

addImage

public void addImage(String imagePath,
                     List<? extends LatLon> corners)
              throws IOException,
                     WWRuntimeException

Add an image to the collection at an explicitly specified location. The image is assumed to be in geographic projection (latitude & longitude).

Parameters:

imagePath - the path to the image file.

corners - the geographic location of the image's corners, specified in order of lower-left, lower-right, upper-right, upper-left.

Throws:

IllegalArgumentException - if the image path or sector is null.

IOException - if an error occurs reading the image file.

WWRuntimeException - if the image type is unsupported.

addImage

public void addImage(String imagePath,
                     Sector sector)
              throws IOException,
                     WWRuntimeException

Add an image to the collection and specify its coverage. The image is assumed to be in geographic projection (latitude & longitude).

Parameters:

imagePath - the path to the image file.

sector - the geographic location of the image.

Throws:

IllegalArgumentException - if the image path or sector is null.

IOException - if an error occurs reading the image file.

WWRuntimeException - if the image type is unsupported.

composeImageForSector

public BufferedImage composeImageForSector(Sector sector,
                                           int canvasWidth,
                                           int canvasHeight,
                                           double aspectRatio,
                                           BufferedImage image)

Create an image for the portion of this layer lying within a specified sector. The image is created at a specified aspect ratio within a canvas of a specified size.

Parameters:

sector - the sector of interest.

canvasWidth - the width of the canvas.

canvasHeight - the height of the canvas.

aspectRatio - the aspect ratio, width/height, of the window. If the aspect ratio is greater or equal to one, the full width of the canvas is used for the image; the height used is proportional to the inverse of the aspect ratio. If the aspect ratio is less than one, the full height of the canvas is used, and the width used is proportional to the aspect ratio.

image - if non-null, a BufferedImage in which to place the image. If null, a new buffered image of type BufferedImage.TYPE_INT_RGB is created. The image must be the width and height specified in the canvasWidth and canvasHeight arguments.

Returns:

image the assembelled image, of size indicated by the canvasWidth and canvasHeight. If the specified aspect ratio is one, all pixels contain values. If the aspect ratio is greater than one, a full-width segment along the top of the canvas is blank. If the aspect ratio is less than one, a full-height segment along the right side of the canvase is blank. If the image argument was non-null, that buffered image is returned.

See Also:

ImageUtil.mergeImage(Sector, Sector, double, BufferedImage, BufferedImage)

dispose

public void dispose()

Description copied from class: RenderableLayer

Disposes the contents of this layer's internal Renderable collection, but does not remove any elements from that collection.

If any of layer's internal Renderables implement AVList, this stops forwarding their property change events to the layer's property change listeners. Any property change listeners the layer attached to the renderables in RenderableLayer.addRenderable(gov.nasa.worldwind.render.Renderable) or RenderableLayer.addRenderables(Iterable) are removed.

Specified by:

dispose in interface Disposable

Overrides:

dispose in class RenderableLayer

getBufferedImage

protected BufferedImage getBufferedImage(DataRaster raster)

getNumImages

public int getNumImages()

openDataRaster

protected DataRaster openDataRaster(Object src,
                                    AVList params)
                             throws IllegalArgumentException,
                                    WWRuntimeException

Throws:

IllegalArgumentException

WWRuntimeException

removeImage

public void removeImage(String imagePath)

setOpacity

public void setOpacity(double opacity)

Description copied from class: RenderableLayer

Opacity is not applied to layers of this type because each renderable typically has its own opacity control.

Specified by:

setOpacity in interface Layer

Overrides:

setOpacity in class RenderableLayer

Parameters:

opacity - the current opacity value, which is ignored by this layer.