File Doc Category Size Date Package
RasterOp.java API Doc Java SE 5 API 3683 Fri Aug 26 14:56:54 BST 2005 java.awt.image

RasterOp

public interface RasterOp

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: AffineTransformOp
see: BandCombineOp
see: ColorConvertOp
see: ConvolveOp
see: LookupOp
see: RescaleOp
version: 10 Feb 1997

Fields Summary
Constructors Summary
Methods Summary
public java.awt.image.WritableRaster createCompatibleDestRaster(java.awt.image.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.
param
src the source Raster
return
a WritableRaster that is compatible with src
public java.awt.image.WritableRaster filter(java.awt.image.Raster src, java.awt.image.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.
param
src the source Raster
param
dest the destination WritableRaster
return
a WritableRaster that represents the result of the filtering operation.
public java.awt.geom.Rectangle2D getBounds2D(java.awt.image.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.
param
src the source Raster
return
a Rectangle2D that is the bounding box of the Raster resulting from the filtering operation.
public java.awt.geom.Point2D getPoint2D(java.awt.geom.Point2D srcPt, java.awt.geom.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.
param
srcPt the source Point2D
param
dstPt the destination Point2D
return
the location of the destination point.
public java.awt.RenderingHints getRenderingHints()
Returns the rendering hints for this RasterOp. Returns null if no hints have been set.
return
the RenderingHints object of this RasterOp.