org.esa.beam.framework.datamodel
Class FXYGeoCoding

java.lang.Object
  org.esa.beam.framework.datamodel.AbstractGeoCoding
      org.esa.beam.framework.datamodel.FXYGeoCoding

All Implemented Interfaces:

GeoCoding

public class FXYGeoCoding
extends AbstractGeoCoding

A geo-coding based on equations. The geo-coordinates (lat, lon) and the pixel coordinates (x,y) are computed by the given functions.

Author:

Marco Peters

Constructor Summary

FXYGeoCoding(float pixelOffsetX, float pixelOffsetY, float pixelSizeX, float pixelSizeY, FXYSum xFunction, FXYSum yFunction, FXYSum latFunction, FXYSum lonFunction, Datum datum)

Method Summary

boolean	canGetGeoPos() Checks whether or not this geo-coding can determine the geodetic position from a pixel position.
boolean	canGetPixelPos() Checks whether or not this geo-coding can determine the pixel position from a geodetic position.
FXYGeoCoding	createCloneWithNewOffsetAndSize(float pixelOffsetX, float pixelOffsetY, float pixelSizeX, float pixelSizeY)
void	dispose() Releases all of the resources used by this object instance and all of its owned children.
Datum	getDatum() Gets the datum, the reference point or surface against which GeoPos measurements are made.
GeoPos	getGeoPos(PixelPos pixelPos, GeoPos geoPos) Returns the latitude and longitude value for a given pixel co-ordinate.
FXYSum	getLatFunction()
FXYSum	getLonFunction()
float	getPixelOffsetX()
float	getPixelOffsetY()
PixelPos	getPixelPos(GeoPos geoPos, PixelPos pixelPos) Returns the pixel co-ordinates as x/y for a given geographical position given as lat/lon.
float	getPixelSizeX()
float	getPixelSizeY()
FXYSum	getPixelXFunction()
FXYSum	getPixelYFunction()
boolean	isCrossingMeridianAt180() Checks whether or not the longitudes of this geo-coding cross the +/- 180 degree meridian.
boolean	transferGeoCoding(Scene srcScene, Scene destScene, ProductSubsetDef subsetDef) Transfers the geo-coding of the srcScene to the destScene with respect to the given subsetDef.

Methods inherited from class org.esa.beam.framework.datamodel.AbstractGeoCoding

createImageCRS, getGeoCRS, getImageCRS, getImageToMapTransform, getMapCRS, setGeoCRS, setImageCRS, setMapCRS

Methods inherited from class java.lang.Object

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

Constructor Detail

FXYGeoCoding

public FXYGeoCoding(float pixelOffsetX,
                    float pixelOffsetY,
                    float pixelSizeX,
                    float pixelSizeY,
                    FXYSum xFunction,
                    FXYSum yFunction,
                    FXYSum latFunction,
                    FXYSum lonFunction,
                    Datum datum)

Method Detail

getPixelOffsetX

public float getPixelOffsetX()

getPixelOffsetY

public float getPixelOffsetY()

getPixelSizeX

public float getPixelSizeX()

getPixelSizeY

public float getPixelSizeY()

getPixelXFunction

public FXYSum getPixelXFunction()

getPixelYFunction

public FXYSum getPixelYFunction()

getLatFunction

public FXYSum getLatFunction()

getLonFunction

public FXYSum getLonFunction()

isCrossingMeridianAt180

public boolean isCrossingMeridianAt180()

Checks whether or not the longitudes of this geo-coding cross the +/- 180 degree meridian.

Returns:

true, if so

canGetPixelPos

public boolean canGetPixelPos()

Checks whether or not this geo-coding can determine the pixel position from a geodetic position.

Returns:

true, if so

canGetGeoPos

public boolean canGetGeoPos()

Checks whether or not this geo-coding can determine the geodetic position from a pixel position.

Returns:

true, if so

getPixelPos

public PixelPos getPixelPos(GeoPos geoPos,
                            PixelPos pixelPos)

Returns the pixel co-ordinates as x/y for a given geographical position given as lat/lon.

Parameters:

geoPos - the geographical position as lat/lon.

pixelPos - an instance of Point to be used as retun value. If this parameter is null, the method creates a new instance which it then returns.

Returns:

the pixel co-ordinates as x/y

getGeoPos

public GeoPos getGeoPos(PixelPos pixelPos,
                        GeoPos geoPos)

Returns the latitude and longitude value for a given pixel co-ordinate.

Parameters:

pixelPos - the pixel's co-ordinates given as x,y

geoPos - an instance of GeoPos to be used as retun value. If this parameter is null, the method creates a new instance which it then returns.

Returns:

the geographical position as lat/lon.

getDatum

public Datum getDatum()

Gets the datum, the reference point or surface against which GeoPos measurements are made.

Returns:

the datum

dispose

public void dispose()

Releases all of the resources used by this object instance and all of its owned children. Its primary use is to allow the garbage collector to perform a vanilla job.

This method should be called only if it is for sure that this object instance will never be used again. The results of referencing an instance of this class after a call to dispose() are undefined.

transferGeoCoding

public boolean transferGeoCoding(Scene srcScene,
                                 Scene destScene,
                                 ProductSubsetDef subsetDef)

Transfers the geo-coding of the srcScene to the destScene with respect to the given subsetDef.

Specified by:

transferGeoCoding in class AbstractGeoCoding

Parameters:

srcScene - the source scene

destScene - the destination scene

subsetDef - the definition of the subset, may be null

Returns:

true, if the geo-coding could be transferred.

createCloneWithNewOffsetAndSize

public FXYGeoCoding createCloneWithNewOffsetAndSize(float pixelOffsetX,
                                                    float pixelOffsetY,
                                                    float pixelSizeX,
                                                    float pixelSizeY)