com.luciad.earth.tileset.terrain

LuciadLightspeedClass TLcdEarthTerrainElevationTileSet

java.lang.Object

com.luciad.earth.tileset.ALcdEarthTileSet

com.luciad.earth.tileset.terrain.TLcdEarthTerrainElevationTileSet

All Implemented Interfaces:

ILcdEarthTileSet, ILcdBounded, ILcdDisposable, AutoCloseable

public class TLcdEarthTerrainElevationTileSet
extends ALcdEarthTileSet

An ILcdEarthTileSet that can be used to produce 3D terrain geometry, elevation data, a lightmap and a normalmap. This tileset uses an ALcdEarthTerrainElevationProvider to produce this data.

This tileset can for example be used to generate the terrain geometry on-the-fly.

This tileset is thread-safe for tile reading if the elevation provider (see getElevationProvider()) is thread-safe.

Since:

8.2

Constructor Summary

Constructors

Constructor and Description
TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds, ALcdEarthTerrainElevationProvider aElevationProvider, int aLevels, int aTileResolution) Constructs a terrain elevation tile set with the specified settings, default tile layout at level 0 and a geodetic reference.
TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds, ALcdEarthTerrainElevationProvider aElevationProvider, int aLevels, int aGeometryTileResolution, int aImageTileResolution) Constructs a terrain elevation tile set with the specified settings, default tile layout at level 0 and a geodetic reference.
TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds, ALcdEarthTerrainElevationProvider aElevationProvider, int aLevels, long aLevel0Rows, long aLevel0Columns, int aTileResolution) Constructs a terrain elevation tile set with the specified settings and a geodetic reference.
TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds, ALcdEarthTerrainElevationProvider aElevationProvider, int aLevels, long aLevel0Rows, long aLevel0Columns, int aGeometryTileResolution, int aImageTileResolution) Constructs a terrain elevation tile set with the specified settings and a geodetic reference.
TLcdEarthTerrainElevationTileSet(ILcdBounds aBounds, ALcdEarthTerrainElevationProvider aElevationProvider, int aLevels, long aLevel0Rows, long aLevel0Columns, int aGeometryTileResolution, int aImageTileResolution, ILcdGeoReference aModelReference) Constructs a terrain elevation tile set with the specified settings.

Method Summary

Modifier and Type	Method and Description
boolean	containsTile(ILcdEarthTileSetCoverage aCoverage, int aLevel, long aX, long aY, Object aContext) Returns true if the repository contains the specified tile.
void	dispose() This method releases all resources held by the repository, such as file locks, threads or server connections.
ILcdBounds	getBounds() Returns the bounds of this tile set, expressed in the model reference of the model that contains this tile set.
double	getDefaultElevationValue() Returns the default elevation value.
ALcdEarthTerrainElevationProvider	getElevationProvider() Returns the elevation provider that is used.
ILcdEarthRasterTileSetCoverage	getElevationTileSetCoverage() Returns the coverage with the elevations.
ILcdEarthRasterTileSetCoverage	getGeometryTileSetCoverage() Returns the coverage with the geometry.
ILcdEarthRasterTileSetCoverage	getInvAlphaLightMapTileSetCoverage() Returns the coverage with the lightmap.
ILcdEarthRasterTileSetCoverage	getLightMapTileSetCoverage() Returns the coverage with the lightmap.
ILcdEarthRasterTileSetCoverage	getNormalMapTileSetCoverage() Returns the coverage with the normal map.
ILcdEarthTileSetCoverage	getTileSetCoverage(int aIndex) Returns the coverage at the specified index.
int	getTileSetCoverageCount() Returns the number of coverages this tileset contains.
boolean	isFormatSupported(ILcdEarthTileSetCoverage aCoverage, TLcdEarthTileFormat aFormat) Returns true only for the coverage's native format.
boolean	isGeoReferenceSupported(ILcdEarthTileSetCoverage aCoverage, ILcdGeoReference aGeoReference) Returns true only for the coverage's native georeference.
void	produceTile(ILcdEarthTileSetCoverage aCoverage, int aLevel, long aTileX, long aTileY, ILcdGeoReference aGeoReference, TLcdEarthTileFormat aFormat, TLcdEarthTileOperationMode aMode, ILcdEarthTileSetCallback aCallback, Object aContext) Produces the requested tile, and invoke the supplied callback when done.
void	setDefaultElevationValue(double aValue) Sets the default elevation value.
void	setElevationProvider(ALcdEarthTerrainElevationProvider aElevationProvider) Sets the elevation provider that is used.
void	setShadingParameters(double ambientCoefficient, double diffuseCoefficient) Sets the shading parameters for the light map generation.
void	setToLightVector(double vecX, double vecY, double vecZ) Sets the vector to the light to the given vector (in a geocentric reference).

Methods inherited from class com.luciad.earth.tileset.ALcdEarthTileSet

cancelTile, containsTileSetCoverage, getLevelCount, getTileBoundsSFCT, getTileColumnCount, getTileRowCount, getTileSetCoverage, produceTile, updateTile, updateTile

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.luciad.util.ILcdDisposable

close

Constructor Detail

TLcdEarthTerrainElevationTileSet

public TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds,
                                        ALcdEarthTerrainElevationProvider aElevationProvider,
                                        int aLevels,
                                        int aTileResolution)

Constructs a terrain elevation tile set with the specified settings, default tile layout at level 0 and a geodetic reference.

Parameters:

aLonLatBounds - the geodetic bounds of the tile set

aElevationProvider - the elevation provider

aLevels - the number of tile levels

aTileResolution - the resolution of the geometry and image tiles

TLcdEarthTerrainElevationTileSet

public TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds,
                                        ALcdEarthTerrainElevationProvider aElevationProvider,
                                        int aLevels,
                                        int aGeometryTileResolution,
                                        int aImageTileResolution)

Constructs a terrain elevation tile set with the specified settings, default tile layout at level 0 and a geodetic reference.

Parameters:

aLonLatBounds - the geodetic bounds of the tile set

aElevationProvider - the elevation provider

aLevels - the number of tile levels

aGeometryTileResolution - the resolution of the produced geometry tiles

aImageTileResolution - the resolution of the produced image tiles

TLcdEarthTerrainElevationTileSet

public TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds,
                                        ALcdEarthTerrainElevationProvider aElevationProvider,
                                        int aLevels,
                                        long aLevel0Rows,
                                        long aLevel0Columns,
                                        int aTileResolution)

Constructs a terrain elevation tile set with the specified settings and a geodetic reference.

Parameters:

aLonLatBounds - the geodetic bounds of the tile set

aElevationProvider - the elevation provider

aLevels - the number of tile levels

aLevel0Rows - the number of tile rows at level 0

aLevel0Columns - the number of tile columns at level 0

aTileResolution - the resolution of the geometry and image tiles

TLcdEarthTerrainElevationTileSet

public TLcdEarthTerrainElevationTileSet(ILcdBounds aLonLatBounds,
                                        ALcdEarthTerrainElevationProvider aElevationProvider,
                                        int aLevels,
                                        long aLevel0Rows,
                                        long aLevel0Columns,
                                        int aGeometryTileResolution,
                                        int aImageTileResolution)

Constructs a terrain elevation tile set with the specified settings and a geodetic reference.

Parameters:

aLonLatBounds - the geodetic bounds of the tile set

aElevationProvider - the elevation provider

aLevels - the number of tile levels

aLevel0Rows - the number of tile rows at level 0

aLevel0Columns - the number of tile columns at level 0

aGeometryTileResolution - the resolution of the produced geometry tiles

aImageTileResolution - the resolution of the produced image tiles

TLcdEarthTerrainElevationTileSet

public TLcdEarthTerrainElevationTileSet(ILcdBounds aBounds,
                                        ALcdEarthTerrainElevationProvider aElevationProvider,
                                        int aLevels,
                                        long aLevel0Rows,
                                        long aLevel0Columns,
                                        int aGeometryTileResolution,
                                        int aImageTileResolution,
                                        ILcdGeoReference aModelReference)

Constructs a terrain elevation tile set with the specified settings.

Parameters:

aBounds - the bounds of the tile set in the model reference

aElevationProvider - the elevation provider

aLevels - the number of tile levels

aLevel0Rows - the number of tile rows at level 0

aLevel0Columns - the number of tile columns at level 0

aGeometryTileResolution - the resolution of the produced geometry tiles

aImageTileResolution - the resolution of the produced image tiles

aModelReference - the model reference

Method Detail

getElevationProvider

public ALcdEarthTerrainElevationProvider getElevationProvider()

Returns the elevation provider that is used.

Returns:

the elevation provider that is used.

setElevationProvider

public void setElevationProvider(ALcdEarthTerrainElevationProvider aElevationProvider)

Sets the elevation provider that is used.

Parameters:

aElevationProvider - the new elevation provider that should be used.

getGeometryTileSetCoverage

public ILcdEarthRasterTileSetCoverage getGeometryTileSetCoverage()

Returns the coverage with the geometry.

Returns:

the geometry coverage.

getElevationTileSetCoverage

public ILcdEarthRasterTileSetCoverage getElevationTileSetCoverage()

Returns the coverage with the elevations.

Returns:

the elevation coverage.

getNormalMapTileSetCoverage

public ILcdEarthRasterTileSetCoverage getNormalMapTileSetCoverage()

Returns the coverage with the normal map.

Returns:

the geometry coverage.

getLightMapTileSetCoverage

public ILcdEarthRasterTileSetCoverage getLightMapTileSetCoverage()

Returns the coverage with the lightmap. The light light intensity values are encoded as grayscale values.

Returns:

The grayscale lightmap coverage.

getInvAlphaLightMapTileSetCoverage

public ILcdEarthRasterTileSetCoverage getInvAlphaLightMapTileSetCoverage()

Returns the coverage with the lightmap. The inverted light intensity values are encoded in the alpha channel. This allows baking the lightmap with a texture by simply using the AlphaComposite.SRC_ATOP composite mode.

Returns:

The inverted alpha lightmap coverage.

setToLightVector

public void setToLightVector(double vecX,
                             double vecY,
                             double vecZ)

Sets the vector to the light to the given vector (in a geocentric reference). The given vector does not need to be normalized.

Parameters:

vecX - The x component of the direction.

vecY - The y component of the direction.

vecZ - The z component of the direction.

setShadingParameters

public void setShadingParameters(double ambientCoefficient,
                                 double diffuseCoefficient)

Sets the shading parameters for the light map generation.

Parameters:

ambientCoefficient - The ambient reflection.

diffuseCoefficient - The diffuse reflection

getDefaultElevationValue

public double getDefaultElevationValue()

Returns the default elevation value. This value will be used when no elevation information is available.

This is similar to a transparency value for images. The default value is 0.0.

Returns:

the default value elevation value

setDefaultElevationValue

public void setDefaultElevationValue(double aValue)

Sets the default elevation value. This value will be used when no elevation information is available.

Parameters:

aValue - the value to set as default elevation value

See Also:

getDefaultElevationValue()

produceTile

public void produceTile(ILcdEarthTileSetCoverage aCoverage,
                        int aLevel,
                        long aTileX,
                        long aTileY,
                        ILcdGeoReference aGeoReference,
                        TLcdEarthTileFormat aFormat,
                        TLcdEarthTileOperationMode aMode,
                        ILcdEarthTileSetCallback aCallback,
                        Object aContext)

Description copied from interface: ILcdEarthTileSet

Produces the requested tile, and invoke the supplied callback when done. The resulting tile is passed to the call back's tileAvailable() method. If the tile cannot be produced for some reason, the method tileNotAvailable() should be called instead.

If the tileset supports it and aMode is TLcdEarthTileOperationMode.PREFER_ASYNCHRONOUS, the tile request may be executed asynchronously. However, the callback must be invoked at some point in time, unless the cancelTile() method is used to cancel the tile request before it is executed. If aMode is TLcdEarthTileOperationMode.FORCE_SYNCHRONOUS, the request must be executed synchronously and the callback must be invoked before produceTile() returns.

Tiles may be requested in reference systems other than the native geo reference of the underlying data, provided that the isGeoReferenceSupported() method returns true for the requested reference. If this is not the case, the tileset should call tileNotAvailable(). If the tileset calls tileAvailable(), the geo reference of the resulting tile must be equal to aGeoReference, and the tile's bounds must likewise be expressed in this reference.

Similarly, tiles may be requested in different data formats, as described by TLcdEarthTileFormat. The format determines the type of the data object that will be contained in the requested tile. To check if a format is supported, use isFormatSupported(). If the specified format is not supported, the tileset should call tileNotAvailable().

The context parameter may be used to pass application-specific data into the tileset. If it is not needed, its value may be null.

Parameters:

aCoverage - the coverage from which the tile is requested

aLevel - the level from which the tile is requested

aTileX - the column index of the requested tile

aTileY - the row index of the requested tile

aGeoReference - the reference system in which the tile should be returned

aFormat - the desired format of the tile's data

aMode - controls the synchronous or asynchronous behaviour of the tileset

aCallback - will be invoked when the tile is available to be used

aContext - application-specific data to be used by the tileset, if any

containsTile

public boolean containsTile(ILcdEarthTileSetCoverage aCoverage,
                            int aLevel,
                            long aX,
                            long aY,
                            Object aContext)

Description copied from interface: ILcdEarthTileSet

Returns true if the repository contains the specified tile.

Specified by:

containsTile in interface ILcdEarthTileSet

Overrides:

containsTile in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage from which to query a tile

aLevel - the detail level for which to query a tile

aX - the column index at which to query a tile

aY - the row index at which to query a tile

aContext - application-specific data to be used by the tileset, if any

Returns:

true if the repository contains the requested tile

dispose

public void dispose()

Description copied from interface: ILcdEarthTileSet

This method releases all resources held by the repository, such as file locks, threads or server connections.

Specified by:

dispose in interface ILcdEarthTileSet

Specified by:

dispose in interface ILcdDisposable

Overrides:

dispose in class ALcdEarthTileSet

getBounds

public ILcdBounds getBounds()

Description copied from interface: ILcdEarthTileSet

Returns the bounds of this tile set, expressed in the model reference of the model that contains this tile set.

Returns:

the bounds of this tile set

See Also:

ILcdBounded.getBounds()

getTileSetCoverageCount

public int getTileSetCoverageCount()

Description copied from interface: ILcdEarthTileSet

Returns the number of coverages this tileset contains.

Returns:

the number of coverages this tileset contains

getTileSetCoverage

public ILcdEarthTileSetCoverage getTileSetCoverage(int aIndex)

Description copied from interface: ILcdEarthTileSet

Returns the coverage at the specified index.

Parameters:

aIndex - the index of the coverage to return

Returns:

the requested ILcdEarthTileSetCoverage

isGeoReferenceSupported

public boolean isGeoReferenceSupported(ILcdEarthTileSetCoverage aCoverage,
                                       ILcdGeoReference aGeoReference)

Description copied from class: ALcdEarthTileSet

Returns true only for the coverage's native georeference.

Specified by:

isGeoReferenceSupported in interface ILcdEarthTileSet

Overrides:

isGeoReferenceSupported in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage to check for

aGeoReference - the reference to check for

Returns:

true if the given coverage can be queried with the given reference

isFormatSupported

public boolean isFormatSupported(ILcdEarthTileSetCoverage aCoverage,
                                 TLcdEarthTileFormat aFormat)

Description copied from class: ALcdEarthTileSet

Returns true only for the coverage's native format.

Specified by:

isFormatSupported in interface ILcdEarthTileSet

Overrides:

isFormatSupported in class ALcdEarthTileSet

Parameters:

aCoverage - the coverage to check for

aFormat - the format to check for

Returns:

true if the given coverage can be queried with the given format