ilog.views.maps.format.cadrg

Class IlvCADRGLayer

java.lang.Object

ilog.views.IlvIndexedSet

ilog.views.IlvManagerLayer

ilog.views.tiling.IlvTiledLayer

ilog.views.maps.format.cadrg.IlvCADRGLayer

All Implemented Interfaces:

IlvPersistentObject, Serializable

public class IlvCADRGLayer
extends IlvTiledLayer

This class implements a CADRG layer that displays a CADRG coverage using the load-on-demand mechanism. This layer reads a CADRG coverage and loads automatically the frames that are visible in the views associated with its manager. It unloads the frames that are not visible.

IlvCADRGLayer works only with a geographic coordinate system.

Since:

Perforce JViews 3.0

See Also:

IlvGeographicCoordinateSystem, Serialized Form

Constructor Summary

Constructors

Constructor and Description
IlvCADRGLayer(IlvCADRGCoverage coverage) Creates an instance of IlvCADRGLayer.
IlvCADRGLayer(IlvCADRGCoverage coverage, IlvTileCache cache) Creates an instance of IlvCADRGLayer.
IlvCADRGLayer(IlvInputStream stream) Reads the layer from the specified input stream.

Method Summary

Modifier and Type	Method and Description
IlvFeatureRenderer	getImageRenderer() Returns the feature renderer used for creating graphic objects representing the CADRG subframes.
double	getPreferredScale() Returns the scale at which a pixel on the screen corresponds to a pixel on a CADRG image.
boolean	isTransparencyEnabled() Returns true if the frame reader creates transparent pixels.
void	setImageRenderer(IlvFeatureRenderer renderer) Sets the feature renderer used for creating graphic objects representing the CADRG subframes.
void	setTransparencyEnabled(boolean transparency) If true, the CADRG frame reader creates transparent pixels.
void	write(IlvOutputStream stream) Writes the object to an IlvOutputStream.

Methods inherited from class ilog.views.tiling.IlvTiledLayer

computeBBox, disconnect, draw, fitTransformerToTile, fitTransformerToTile, getDebugView, getSize, getTileController, getTileLoader, ignoreView, initTileOrigin, isIgnoringView, isVisible, setDebugView, setDebugView, setManager, setSize, setTileLoader

Methods inherited from class ilog.views.IlvManagerLayer

addVisibilityFilter, drawImpl, getAlpha, getIndex, getManager, getName, getNamedProperty, getProperty, getVisibilityFilters, isSelectable, isTemporarilyHidden, isVisible, print, removeNamedProperty, removeVisibilityFilter, setAlpha, setName, setNamedProperty, setProperty, writeIt

Methods inherited from class ilog.views.IlvIndexedSet

addObject, afterUpdate, beforeUpdate, collectObjects, collectSelectableObjects, deleteAll, getCardinal, getElements, getIndex, getManagers, getManagersCount, getObject, getObject, getSelectableObject, getSubsequentRemoveThreshold, isQuadtreeEnabled, isZOrdering, map, mapInside, mapInside, mapIntersects, mapIntersects, removeObject, setIndex, SetInitialNumberOfNonZoomablesCapacity, SetInitialNumberOfObjectsCapacity, setQuadtreeEnabled, setSubsequentRemoveThreshold, setZOrdering

Methods inherited from class java.lang.Object

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

Constructor Detail

IlvCADRGLayer

public IlvCADRGLayer(IlvCADRGCoverage coverage)

Creates an instance of IlvCADRGLayer. This constructor uses a cache that will be shared by all the IlvCADRGLayer instances initialized by means of this default constructor.

Parameters:

coverage - The coverage of the layer

IlvCADRGLayer

public IlvCADRGLayer(IlvCADRGCoverage coverage,
                     IlvTileCache cache)

Creates an instance of IlvCADRGLayer.

Parameters:

coverage - The coverage of the layer

cache - The cache managing the release operations for the unused frames.

IlvCADRGLayer

public IlvCADRGLayer(IlvInputStream stream)
              throws IlvReadFileException

Reads the layer from the specified input stream.

Parameters:

stream - The input stream

Throws:

IlvReadFileException - if an error occurs while reading the data.

Method Detail

setTransparencyEnabled

public void setTransparencyEnabled(boolean transparency)

If true, the CADRG frame reader creates transparent pixels.

isTransparencyEnabled

public boolean isTransparencyEnabled()

Returns true if the frame reader creates transparent pixels.

setImageRenderer

public void setImageRenderer(IlvFeatureRenderer renderer)

Sets the feature renderer used for creating graphic objects representing the CADRG subframes. The image renderer must support the IlvMapImage geometry.

Parameters:

renderer - The feature renderer to be used

getImageRenderer

public IlvFeatureRenderer getImageRenderer()

Returns the feature renderer used for creating graphic objects representing the CADRG subframes. By default, it is a IlvDefaultImageRenderer.

getPreferredScale

public double getPreferredScale()

Returns the scale at which a pixel on the screen corresponds to a pixel on a CADRG image.

write

public void write(IlvOutputStream stream)
           throws IOException

Writes the object to an IlvOutputStream.

Specified by:

write in interface IlvPersistentObject

Overrides:

write in class IlvTiledLayer

Parameters:

stream - the output stream

Throws:

IOException - if an errors occurs while writing the data.