jaitools.media.jai.vectorbinarize
Class VectorBinarizeOpImage

java.lang.Object
  javax.media.jai.PlanarImage
      javax.media.jai.OpImage
          javax.media.jai.SourcelessOpImage
              jaitools.media.jai.vectorbinarize.VectorBinarizeOpImage

All Implemented Interfaces:

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

public class VectorBinarizeOpImage
extends javax.media.jai.SourcelessOpImage

Creates a binary image based on tests of pixel inclusion in a polygonal Geometry. See VectorBinarizeDescriptor for details.

Since:

1.1

Version:

$Id: VectorBinarizeOpImage.java 1393 2011-02-14 12:10:35Z andrea.aime $

Author:

Michael Bedward, Andrea Aime

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

VectorBinarizeOpImage(SampleModel sm, Map configuration, int minX, int minY, int width, int height, com.vividsolutions.jts.geom.prep.PreparedGeometry geom, PixelCoordType coordType)
Constructor.

Method Summary

Raster	computeTile(int tileX, int tileY) Returns the specified tile.
protected Raster	getTileRaster(int minX, int minY) Gets the data for the requested tile.

Methods inherited from class javax.media.jai.SourcelessOpImage

computesUniqueTiles, mapDestRect, mapSourceRect

Methods inherited from class javax.media.jai.OpImage

addTileToCache, cancelTiles, computeRect, computeRect, 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, toString, wrapRenderedImage, XToTileX, XToTileX, YToTileY, YToTileY

Methods inherited from class java.lang.Object

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

Constructor Detail

VectorBinarizeOpImage

public VectorBinarizeOpImage(SampleModel sm,
                             Map configuration,
                             int minX,
                             int minY,
                             int width,
                             int height,
                             com.vividsolutions.jts.geom.prep.PreparedGeometry geom,
                             PixelCoordType coordType)

Constructor.

Parameters:

sm - the SampleModel used to create tiles

configuration - rendering hints

minX - origin X ordinate

minY - origin Y ordinate

width - image width

height - image height

geom - reference polygonal geometry

coordType - type of coordinates to use when testing pixel inclusion (corner or center)

Method Detail

computeTile

public Raster computeTile(int tileX,
                          int tileY)

Returns the specified tile.

Overrides:

computeTile in class javax.media.jai.SourcelessOpImage

Parameters:

tileX - tile X index

tileY - tile Y index

Returns:

the requested tile

getTileRaster

protected Raster getTileRaster(int minX,
                               int minY)

Gets the data for the requested tile. If the tile is either completely within or outside of the reference PreparedGeometry a cached constant Raster with 1 or 0 values is returned. Otherwise tile pixels are checked for inclusion and set individually.

Parameters:

minX - origin X ordinate

minY - origin Y ordinate

Returns:

the requested tile