Spec-Zone .ru
спецификации, руководства, описания, API
|
|
JavaTM 2 Platform Std. Ed. v1.3.1 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object | +--java.awt.image.LookupOp
This class implements a lookup operation from the source to the destination. The LookupTable object may contain a single array or multiple arrays, subject to the restrictions below.
For Rasters, the lookup operates on bands. The number of lookup arrays may be one, in which case the same array is applied to all bands, or it must equal the number of Source Raster bands.
For BufferedImages, the lookup operates on color and alpha components. The number of lookup arrays may be one, in which case the same array is applied to all color (but not alpha) components. Otherwise, the number of lookup arrays may equal the number of Source color components, in which case no lookup of the alpha component (if present) is performed. If neither of these cases apply, the number of lookup arrays must equal the number of Source color components plus alpha components, in which case lookup is performed for all color and alpha components. This allows non-uniform rescaling of multi-band BufferedImages.
BufferedImage sources with premultiplied alpha data are treated in the same manner as non-premultiplied images for purposes of the lookup. That is, the lookup is done per band on the raw data of the BufferedImage source without regard to whether the data is premultiplied. If a color conversion is required to the destination ColorModel, the premultiplied state of both source and destination will be taken into account for this step.
Images with an IndexColorModel cannot be used.
If a RenderingHints object is specified in the constructor, the color rendering hint and the dithering hint may be used when color conversion is required.
This class allows the Source to be the same as the Destination.
LookupTable
,
RenderingHints.KEY_COLOR_RENDERING
,
RenderingHints.KEY_DITHERING
Constructor Summary | |
LookupOp(LookupTable lookup,
RenderingHints hints)
Constructs a LookupOp object given the lookup table and a RenderingHints object (which may be null). |
Method Summary | |
BufferedImage |
createCompatibleDestImage(BufferedImage src,
ColorModel destCM)
Creates a zeroed destination image with the correct size and number of bands. |
WritableRaster |
createCompatibleDestRaster(Raster src)
Creates a zeroed destination Raster with the correct size and number of bands, given this source. |
BufferedImage |
filter(BufferedImage src,
BufferedImage dst)
Performs a lookup operation on a BufferedImage. |
WritableRaster |
filter(Raster src,
WritableRaster dst)
Performs a lookup operation on a Raster. |
Rectangle2D |
getBounds2D(BufferedImage src)
Returns the bounding box of the filtered destination image. |
Rectangle2D |
getBounds2D(Raster src)
Returns the bounding box of the filtered destination Raster. |
Point2D |
getPoint2D(Point2D srcPt,
Point2D dstPt)
Returns the location of the destination point given a point in the source. |
RenderingHints |
getRenderingHints()
Returns the rendering hints for this op. |
LookupTable |
getTable()
Returns the LookupTable. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public LookupOp(LookupTable lookup, RenderingHints hints)
Method Detail |
public final LookupTable getTable()
public final BufferedImage filter(BufferedImage src, BufferedImage dst)
filter
in interface BufferedImageOp
public final WritableRaster filter(Raster src, WritableRaster dst)
filter
in interface RasterOp
public final Rectangle2D getBounds2D(BufferedImage src)
getBounds2D
in interface BufferedImageOp
public final Rectangle2D getBounds2D(Raster src)
getBounds2D
in interface RasterOp
public BufferedImage createCompatibleDestImage(BufferedImage src, ColorModel destCM)
createCompatibleDestImage
in interface BufferedImageOp
src
- Source image for the filter operation.destCM
- ColorModel of the destination. Can be null.public WritableRaster createCompatibleDestRaster(Raster src)
createCompatibleDestRaster
in interface RasterOp
public final Point2D getPoint2D(Point2D srcPt, Point2D dstPt)
getPoint2D
in interface BufferedImageOp
public final RenderingHints getRenderingHints()
getRenderingHints
in interface BufferedImageOp
|
JavaTM 2 Platform Std. Ed. v1.3.1 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
Java, Java 2D, and JDBC are trademarks or registered trademarks of Sun Microsystems, Inc. in the US and other countries.
Copyright 1993-2001 Sun Microsystems, Inc. 901 San Antonio Road
Palo Alto, California, 94303, U.S.A. All Rights Reserved.