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java.awt.image

public Interface RasterOp

Known Direct Implementers
java.awt.image.RescaleOp, java.awt.image.ConvolveOp, java.awt.image.AffineTransformOp, java.awt.image.BandCombineOp, java.awt.image.ColorConvertOp, java.awt.image.LookupOp
Imports
java.awt.geom.Rectangle2D, .Point2D, java.awt.RenderingHints
This interface describes single-input/single-output operations performed on Raster objects. It is implemented by such classes as AffineTransformOp, ConvolveOp, and LookupOp. The Source and Destination objects must contain the appropriate number of bands for the particular classes implementing this interface. Otherwise, an exception is thrown. This interface cannot be used to describe more sophisticated Ops such as ones that take multiple sources. Each class implementing this interface will specify whether or not it will allow an in-place filtering operation (i.e. source object equal to the destination object). Note that the restriction to single-input operations means that the values of destination pixels prior to the operation are not used as input to the filter operation.
See Also
AffineTransformOp, BandCombineOp, ColorConvertOp, ConvolveOp, LookupOp, RescaleOp

Method Summary

Modifier and TypeMethod and Description
public WritableRaster

Returns:

a WritableRaster that is compatible with src
createCompatibleDestRaster(Raster
the source Raster
src)

Creates a zeroed destination Raster with the correct size and number of bands.

public WritableRaster

Returns:

a WritableRaster that represents the result of the filtering operation.
filter(Raster
the source Raster
src, WritableRaster
the destination WritableRaster
dest)

Performs a single-input/single-output operation from a source Raster to a destination Raster.

public Rectangle2D

Returns:

a Rectangle2D that is the bounding box of the Raster resulting from the filtering operation.
getBounds2D(Raster
the source Raster
src)

Returns the bounding box of the filtered destination Raster.

public Point2D

Returns:

the location of the destination point.
getPoint2D(Point2D
the source Point2D
srcPt, Point2D
the destination Point2D
dstPt)

Returns the location of the destination point given a point in the source Raster.

public RenderingHints

Returns:

the RenderingHints object of this RasterOp.
getRenderingHints()

Returns the rendering hints for this RasterOp.

Method Detail

createCompatibleDestRasterback to summary
public WritableRaster createCompatibleDestRaster(Raster src)

Creates a zeroed destination Raster with the correct size and number of bands. The IllegalArgumentException may be thrown if the source Raster is incompatible with the types of Rasters allowed by the class implementing this filter.

Parameters
src:Raster

the source Raster

Returns:WritableRaster

a WritableRaster that is compatible with src

filterback to summary
public WritableRaster filter(Raster src, WritableRaster dest)

Performs a single-input/single-output operation from a source Raster to a destination Raster. If the destination Raster is null, a new Raster will be created. The IllegalArgumentException may be thrown if the source and/or destination Raster is incompatible with the types of Rasters allowed by the class implementing this filter.

Parameters
src:Raster

the source Raster

dest:WritableRaster

the destination WritableRaster

Returns:WritableRaster

a WritableRaster that represents the result of the filtering operation.

getBounds2Dback to summary
public Rectangle2D getBounds2D(Raster src)

Returns the bounding box of the filtered destination Raster. The IllegalArgumentException may be thrown if the source Raster is incompatible with the types of Rasters allowed by the class implementing this filter.

Parameters
src:Raster

the source Raster

Returns:Rectangle2D

a Rectangle2D that is the bounding box of the Raster resulting from the filtering operation.

getPoint2Dback to summary
public Point2D getPoint2D(Point2D srcPt, Point2D dstPt)

Returns the location of the destination point given a point in the source Raster. If dstPt is non-null, it will be used to hold the return value.

Parameters
srcPt:Point2D

the source Point2D

dstPt:Point2D

the destination Point2D

Returns:Point2D

the location of the destination point.

getRenderingHintsback to summary
public RenderingHints getRenderingHints()

Returns the rendering hints for this RasterOp. Returns null if no hints have been set.

Returns:RenderingHints

the RenderingHints object of this RasterOp.