org.esa.snap.core.image

Class RasterDataNodeOpImage

java.lang.Object

javax.media.jai.PlanarImage

javax.media.jai.OpImage

javax.media.jai.SourcelessOpImage

org.esa.snap.core.image.SingleBandedOpImage

org.esa.snap.core.image.RasterDataNodeOpImage

All Implemented Interfaces:

RenderedImage, javax.media.jai.ImageJAI, javax.media.jai.PropertyChangeEmitter, javax.media.jai.PropertySource, javax.media.jai.WritablePropertySource

Direct Known Subclasses:

BandOpImage, RasterDataNodeSampleOpImage, TiePointGridOpImage

public abstract class RasterDataNodeOpImage
extends SingleBandedOpImage

A base class for OpImages acting as source image for a RasterDataNode.

See Also:

RasterDataNode.getSourceImage(), RasterDataNode.getGeophysicalImage(), RasterDataNode.setSourceImage(com.bc.ceres.glevel.MultiLevelImage)

Field Summary

Fields inherited from class javax.media.jai.OpImage

cache, cobbleSources, OP_COMPUTE_BOUND, OP_IO_BOUND, OP_NETWORK_BOUND, tileCacheMetric, tileRecycler

Fields inherited from class javax.media.jai.PlanarImage

colorModel, eventManager, height, minX, minY, properties, sampleModel, tileFactory, tileGridXOffset, tileGridYOffset, tileHeight, tileWidth, width

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RasterDataNodeOpImage(RasterDataNode rasterDataNode, ResolutionLevel level) Constructor.

Method Summary

Modifier and Type	Method and Description
protected abstract void	computeProductData(ProductData productData, Rectangle region) Computes the target pixel data for this level image.
protected void	computeRect(javax.media.jai.PlanarImage[] sourceImages, WritableRaster tile, Rectangle destRect)
protected static void	copyLine(int y, int destWidth, ProductData src, ProductData dest, int[] sourceCoords)
protected ProductData	getGeophysicalProductData(RasterDataNode band, Rectangle region) Utility method that allows to retrieve data from a raster data node whose geophysical image shares the same multi-level model (aka image pyramid model).
RasterDataNode	getRasterDataNode()
protected ProductData	getRawProductData(RasterDataNode band, Rectangle region) Utility method that allows to retrieve data from a raster data node whose source image shares the same multi-level model (aka image pyramid model).
protected int[]	getSourceCoords(int sourceLength, int targetLength) Utility method which computes source (offset) coordinates for a given source and target lengths.
String	toString()

Methods inherited from class org.esa.snap.core.image.SingleBandedOpImage

computeRect, createNoDataRaster, getLevel, getLevelImageSupport, getScale, getSourceCoord, getSourceHeight, getSourceWidth, getSourceX, getSourceY

Methods inherited from class javax.media.jai.SourcelessOpImage

computesUniqueTiles, computeTile, mapDestRect, mapSourceRect

Methods inherited from class javax.media.jai.OpImage

addTileToCache, cancelTiles, createTile, dispose, getExpandedNumBands, getFormatTags, getOperationComputeType, getTile, getTileCache, getTileCacheMetric, getTileDependencies, getTileFromCache, getTileRecycler, getTiles, hasExtender, mapDestPoint, mapSourcePoint, prefetchTiles, queueTiles, recycleTile, setTileCache, vectorize, vectorize, vectorize

Methods inherited from class javax.media.jai.PlanarImage

addPropertyChangeListener, addPropertyChangeListener, addSink, addSink, addSource, addTileComputationListener, copyData, copyData, copyExtendedData, createColorModel, createSnapshot, createWritableRaster, finalize, getAsBufferedImage, getAsBufferedImage, getBounds, getColorModel, getData, getData, getDefaultColorModel, getExtendedData, getGraphics, getHeight, getImageID, getMaxTileX, getMaxTileY, getMaxX, getMaxY, getMinTileX, getMinTileY, getMinX, getMinY, getNumBands, getNumSources, getNumXTiles, getNumYTiles, getProperties, getProperty, getPropertyClass, getPropertyNames, getPropertyNames, getSampleModel, getSinks, getSource, getSourceImage, getSourceObject, getSources, getSplits, getTileComputationListeners, getTileFactory, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileIndices, getTileRect, getTiles, getTileWidth, getWidth, overlapsMultipleTiles, removeProperty, removePropertyChangeListener, removePropertyChangeListener, removeSink, removeSink, removeSinks, removeSource, removeSources, removeTileComputationListener, setImageLayout, setProperties, setProperty, setSource, setSources, tileXToX, tileXToX, tileYToY, tileYToY, wrapRenderedImage, XToTileX, XToTileX, YToTileY, YToTileY

Methods inherited from class java.lang.Object

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

Constructor Detail

RasterDataNodeOpImage

protected RasterDataNodeOpImage(RasterDataNode rasterDataNode,
                                ResolutionLevel level)

Constructor.

Parameters:

rasterDataNode - The target raster data node.

level - The resolution level.

See Also:

ResolutionLevel.create(com.bc.ceres.glevel.MultiLevelModel, int)

Method Detail

getRasterDataNode

public RasterDataNode getRasterDataNode()

Returns:

The target raster data node.

getGeophysicalProductData

protected ProductData getGeophysicalProductData(RasterDataNode band,
                                                Rectangle region)

Utility method that allows to retrieve data from a raster data node whose geophysical image shares the same multi-level model (aka image pyramid model).

Parameters:

band - A raster data node whose geophysical image shares the same multi-level model.

region - The region in pixel coordinates of the given resolution level (see SingleBandedOpImage.getLevel()).

Returns:

The retrieved pixel data in geophysical units.

See Also:

getRawProductData(RasterDataNode, java.awt.Rectangle)

getRawProductData

protected ProductData getRawProductData(RasterDataNode band,
                                        Rectangle region)

Utility method that allows to retrieve data from a raster data node whose source image shares the same multi-level model (aka image pyramid model).

Parameters:

band - A raster data node whose source image shares the same multi-level model.

region - The region in pixel coordinates of the given resolution level (see SingleBandedOpImage.getLevel()).

Returns:

The retrieved, raw and unscaled source pixel data.

See Also:

getGeophysicalProductData(RasterDataNode, java.awt.Rectangle)

computeRect

protected void computeRect(javax.media.jai.PlanarImage[] sourceImages,
                           WritableRaster tile,
                           Rectangle destRect)

Overrides:

computeRect in class javax.media.jai.OpImage

computeProductData

protected abstract void computeProductData(ProductData productData,
                                           Rectangle region)
                                    throws IOException

Computes the target pixel data for this level image.

Parameters:

productData - The target pixel buffer to write to. The number of elements in this buffer will always be region.width * region.height.

region - The target region in pixel coordinates valid for this image level.

Throws:

IOException - May be thrown if an I/O error occurs during the computation.

toString

public String toString()

Overrides:

toString in class javax.media.jai.PlanarImage

getSourceCoords

protected int[] getSourceCoords(int sourceLength,
                                int targetLength)

Utility method which computes source (offset) coordinates for a given source and target lengths.

Parameters:

sourceLength - The source length in source pixel units.

targetLength - The target length in target pixel units.

Returns:

An array of size targetLength containing source (offset) coordinates.

copyLine

protected static void copyLine(int y,
                               int destWidth,
                               ProductData src,
                               ProductData dest,
                               int[] sourceCoords)