org.deegree.model.coverage.grid
Class AbstractGridCoverage

java.lang.Object
  org.deegree.model.coverage.AbstractCoverage
      org.deegree.model.coverage.grid.AbstractGridCoverage

All Implemented Interfaces:

Serializable, Coverage, GridCoverage

Direct Known Subclasses:

ByteGridCoverage, FloatGridCoverage, ImageGridCoverage, ShortGridCoverage

public abstract class AbstractGridCoverage
extends AbstractCoverage
implements GridCoverage

Represent the basic implementation which provides access to grid coverage data. A GC_GridCoverage implementation may provide the ability to update grid values.

Version:

2.11.2002

Author:

Andreas Poth

See Also:

Serialized Form

Field Summary

protected static float	offset
protected static float	scaleFactor

Fields inherited from class org.deegree.model.coverage.AbstractCoverage

coverageOffering, numSources, sources

Constructor Summary

AbstractGridCoverage(CoverageOffering coverageOffering, Envelope envelope)

AbstractGridCoverage(CoverageOffering coverageOffering, Envelope envelope, boolean isEditable)

AbstractGridCoverage(CoverageOffering coverageOffering, Envelope envelope, CoordinateSystem crs, boolean isEditable)

AbstractGridCoverage(CoverageOffering coverageOffering, Envelope envelope, Coverage[] sources)

AbstractGridCoverage(CoverageOffering coverageOffering, Envelope envelope, Coverage[] sources, boolean isEditable)

AbstractGridCoverage(CoverageOffering coverageOffering, Envelope envelope, Coverage[] sources, CoordinateSystem crs, boolean isEditable)

Method Summary

abstract BufferedImage	getAsImage(int xAxis, int yAxis) this is a deegree convenience method which returns the source image of an ImageGridCoverage.
GridGeometry	getGridGeometry() Information for the grid coverage geometry.
boolean	isDataEditable() Returns true if grid data can be edited.
protected BufferedImage	paintImage(BufferedImage targetImg, Envelope targetEnv, BufferedImage sourceImg, Envelope sourceEnv)
protected BufferedImage	paintImage(BufferedImage targetImg, float[][] data, Envelope targetEnv, BufferedImage sourceImg, Envelope sourceEnv) renders a source image onto the correct position of a target image according to threir geographic extends (Envelopes).

Methods inherited from class org.deegree.model.coverage.AbstractCoverage

getCoordinateReferenceSystem, getCoverageOffering, getDimensionNames, getEnvelope, getMetadataNames, getMetadataValue, getNumSources, getRenderableImage, getSampleDimension, getSource

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.model.coverage.grid.GridCoverage

getSource

Methods inherited from interface org.deegree.model.coverage.Coverage

getCoordinateReferenceSystem, getDimensionNames, getEnvelope, getMetadataNames, getMetadataValue, getNumSampleDimensions, getNumSources, getRenderableImage, getSampleDimension

Field Detail

offset

protected static float offset

scaleFactor

protected static float scaleFactor

Constructor Detail

AbstractGridCoverage

public AbstractGridCoverage(CoverageOffering coverageOffering,
                            Envelope envelope)

Parameters:

coverageOffering -

envelope -

AbstractGridCoverage

public AbstractGridCoverage(CoverageOffering coverageOffering,
                            Envelope envelope,
                            Coverage[] sources)

Parameters:

coverageOffering -

sources -

envelope -

AbstractGridCoverage

public AbstractGridCoverage(CoverageOffering coverageOffering,
                            Envelope envelope,
                            boolean isEditable)

Parameters:

coverageOffering -

envelope -

isEditable -

AbstractGridCoverage

public AbstractGridCoverage(CoverageOffering coverageOffering,
                            Envelope envelope,
                            CoordinateSystem crs,
                            boolean isEditable)

Parameters:

coverageOffering -

envelope -

isEditable -

AbstractGridCoverage

public AbstractGridCoverage(CoverageOffering coverageOffering,
                            Envelope envelope,
                            Coverage[] sources,
                            boolean isEditable)

Parameters:

coverageOffering -

envelope -

sources -

isEditable -

AbstractGridCoverage

public AbstractGridCoverage(CoverageOffering coverageOffering,
                            Envelope envelope,
                            Coverage[] sources,
                            CoordinateSystem crs,
                            boolean isEditable)

Parameters:

coverageOffering -

envelope -

sources -

crs -

isEditable -

Method Detail

isDataEditable

public boolean isDataEditable()

Returns true if grid data can be edited.

Specified by:

isDataEditable in interface GridCoverage

Returns:

true if grid data can be edited.

getGridGeometry

public GridGeometry getGridGeometry()

Information for the grid coverage geometry. Grid geometry includes the valid range of grid coordinates and the georeferencing.

Specified by:

getGridGeometry in interface GridCoverage

Returns:

the information for the grid coverage geometry.

getAsImage

public abstract BufferedImage getAsImage(int xAxis,
                                         int yAxis)

this is a deegree convenience method which returns the source image of an ImageGridCoverage. In procipal the same can be done with the getRenderableImage(int xAxis, int yAxis) method. but creating a RenderableImage image is very slow.

Parameters:

xAxis - Dimension to use for the x axis.

yAxis - Dimension to use for the y axis.

Returns:

paintImage

protected BufferedImage paintImage(BufferedImage targetImg,
                                   Envelope targetEnv,
                                   BufferedImage sourceImg,
                                   Envelope sourceEnv)

paintImage

protected BufferedImage paintImage(BufferedImage targetImg,
                                   float[][] data,
                                   Envelope targetEnv,
                                   BufferedImage sourceImg,
                                   Envelope sourceEnv)

renders a source image onto the correct position of a target image according to threir geographic extends (Envelopes).

Parameters:

targetImg -

targetEnv -

sourceImg -

sourceEnv -

Returns:

targetImg with sourceImg rendered on