Package com.luciad.tea

Class TLcdFixedLevelBasedRasterElevationProvider

java.lang.Object

com.luciad.tea.ALcdTerrainElevationProvider

com.luciad.tea.ALcdRasterTerrainElevationProvider

com.luciad.tea.ALcdModelBasedTerrainElevationProvider

com.luciad.tea.TLcdFixedLevelBasedRasterElevationProvider

All Implemented Interfaces:

ILcdAltitudeProvider

public class TLcdFixedLevelBasedRasterElevationProvider
extends ALcdModelBasedTerrainElevationProvider

This implementation of ALcdTerrainElevationProvider retrieves the elevation from a number of Raster or MultiLevelRaster models. The raster level to use is set by setRasterLevel(). The default is level 1 (corresponds to DTED 0 for DTED rasters).

Constructor Summary

Constructors

Constructor	Description
TLcdFixedLevelBasedRasterElevationProvider()	Defines an ALcdModelBasedTerrainElevationProvider which retrieves elevation values from the raster with the desired raster level.

Method Summary

Modifier and Type	Method	Description
int	getRasterLevel()	Returns the raster level used to retrieve elevation data.
double	retrieveElevationAt(ILcdPoint aModelPoint, ILcdGeoReference aModelPointReference)	Returns the elevation for a given location, defined in meters above the geoid from the given location reference.
void	setRasterLevel(int aRasterLevel)	Set the desired raster level for this elevation provider.

Methods inherited from class com.luciad.tea.ALcdModelBasedTerrainElevationProvider

addModel, getModel, getModelCount, getPreferredReference, removeAllModels, removeModel

Methods inherited from class com.luciad.tea.ALcdRasterTerrainElevationProvider

getMaximumValidRasterValue, getMinimumValidRasterValue, getOutOfRasterBoundsValue, getUnknownElevation, isValidRasterValue, setMaximumValidRasterValue, setMinimumValidRasterValue, setOutOfRasterBoundsValue, setUnknownElevation

Methods inherited from class com.luciad.tea.ALcdTerrainElevationProvider

getAltitudeDescriptor, getAltitudeMode, isValidElevation, retrieveAltitudeAt

Methods inherited from class java.lang.Object

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

Constructor Details

TLcdFixedLevelBasedRasterElevationProvider

public TLcdFixedLevelBasedRasterElevationProvider()

Defines an ALcdModelBasedTerrainElevationProvider which retrieves elevation values from the raster with the desired raster level.

Method Details

retrieveElevationAt

public double retrieveElevationAt(ILcdPoint aModelPoint,
 ILcdGeoReference aModelPointReference)

Returns the elevation for a given location, defined in meters above the geoid from the given location reference.

Special elevation values should be interpreted as defined by the altitude descriptor (from ALcdTerrainElevationProvider.getAltitudeDescriptor()). Keep in mind that Double.NaN, Double.NEGATIVE_INFINITY and Double.POSITIVE_INFINITY can also be used as special values.

This implementations uses the raster with the desired raster level to retrieve the altitude value for the given location.

Specified by:

retrieveElevationAt in class ALcdTerrainElevationProvider

Parameters:

aModelPoint - The point indicating the location for which to retrieve the elevation.

aModelPointReference - The reference in which the given location is defined. Note that the ellipsoid from this reference should be used to define the returning elevation value.

Returns:

the elevation for a given location, defined in meters above the ellipsoid.

getRasterLevel

public int getRasterLevel()

Returns the raster level used to retrieve elevation data.

Returns:

the raster level used to retrieve elevation data.

setRasterLevel

public void setRasterLevel(int aRasterLevel)

Set the desired raster level for this elevation provider.

Parameters:

aRasterLevel - The desired raster level.