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JavaTM 2 Platform Std. Ed. v1.4.2 |
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java.lang.Objectjava.awt.image.AffineTransformOp
This class uses an affine transform to perform a linear mapping from
2D coordinates in the source image or Raster to 2D coordinates
in the destination image or Raster.
The type of interpolation that is used is specified through a constructor,
either by a RenderingHints object or by one of the integer
interpolation types defined in this class.
If a RenderingHints object is specified in the constructor, the
interpolation hint and the rendering quality hint are used to set
the interpolation type for this operation. The color rendering hint
and the dithering hint can be used when color conversion is required.
Note that the following constraints have to be met:
Raster objects, the number of bands in the source must
be equal to the number of bands in the destination.
AffineTransform,
BufferedImageFilter,
RenderingHints.KEY_INTERPOLATION,
RenderingHints.KEY_RENDERING,
RenderingHints.KEY_COLOR_RENDERING,
RenderingHints.KEY_DITHERING| Field Summary | |
static int |
TYPE_BILINEAR
Bilinear interpolation type. |
static int |
TYPE_NEAREST_NEIGHBOR
Nearest-neighbor interpolation type. |
| Constructor Summary | |
AffineTransformOp(AffineTransform xform,
int interpolationType)
Constructs an AffineTransformOp given an affine transform
and the interpolation type. |
|
AffineTransformOp(AffineTransform xform,
RenderingHints hints)
Constructs an AffineTransformOp given an affine transform. |
|
| 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. |
BufferedImage |
filter(BufferedImage src,
BufferedImage dst)
Transforms the source BufferedImage and stores the results
in the destination BufferedImage. |
WritableRaster |
filter(Raster src,
WritableRaster dst)
Transforms the source Raster and stores the results in
the destination Raster. |
Rectangle2D |
getBounds2D(BufferedImage src)
Returns the bounding box of the transformed destination. |
Rectangle2D |
getBounds2D(Raster src)
Returns the bounding box of the transformed destination. |
int |
getInterpolationType()
Returns the interpolation type used by this op. |
Point2D |
getPoint2D(Point2D srcPt,
Point2D dstPt)
Returns the location of the corresponding destination point given a point in the source. |
RenderingHints |
getRenderingHints()
Returns the rendering hints used by this transform operation. |
AffineTransform |
getTransform()
Returns the affine transform used by this transform operation. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
public static final int TYPE_NEAREST_NEIGHBOR
public static final int TYPE_BILINEAR
| Constructor Detail |
public AffineTransformOp(AffineTransform xform,
RenderingHints hints)
AffineTransformOp given an affine transform.
The interpolation type is determined from the
RenderingHints object. If the interpolation hint is
defined, it will be used. Otherwise, if the rendering quality hint is
defined, the interpolation type is determined from its value. If no
hints are specified (hints is null),
the interpolation type is TYPE_NEAREST_NEIGHBOR.
xform - The AffineTransform to use for the
operation.hints - The RenderingHints object used to specify
the interpolation type for the operation.
ImagingOpException - if the transform is non-invertible.RenderingHints.KEY_INTERPOLATION,
RenderingHints.KEY_RENDERING
public AffineTransformOp(AffineTransform xform,
int interpolationType)
AffineTransformOp given an affine transform
and the interpolation type.
xform - The AffineTransform to use for the operation.interpolationType - One of the integer
interpolation type constants defined by this class:
TYPE_NEAREST_NEIGHBOR,
TYPE_BILINEAR.
ImagingOpException - if the transform is non-invertible.| Method Detail |
public final int getInterpolationType()
TYPE_NEAREST_NEIGHBOR,
TYPE_BILINEAR
public final BufferedImage filter(BufferedImage src,
BufferedImage dst)
BufferedImage and stores the results
in the destination BufferedImage.
If the color models for the two images do not match, a color
conversion into the destination color model is performed.
If the destination image is null,
a BufferedImage is created with the source
ColorModel.
The coordinates of the rectangle returned by
getBounds2D(BufferedImage)
are not necessarily the same as the coordinates of the
BufferedImage returned by this method. If the
upper-left corner coordinates of the rectangle are
negative then this part of the rectangle is not drawn. If the
upper-left corner coordinates of the rectangle are positive
then the filtered image is drawn at that position in the
destination BufferedImage.
An IllegalArgumentException is thrown if the source is
the same as the destination.
filter in interface BufferedImageOpsrc - The BufferedImage to transform.dst - The BufferedImage in which to store the results
of the transformation.
BufferedImage.
IllegalArgumentException - if src and
dst are the same
ImagingOpException - if the image cannot be transformed
because of a data-processing error that might be
caused by an invalid image format, tile format, or
image-processing operation, or any other unsupported
operation.
public final WritableRaster filter(Raster src,
WritableRaster dst)
Raster and stores the results in
the destination Raster. This operation performs the
transform band by band.
If the destination Raster is null, a new
Raster is created.
An IllegalArgumentException may be thrown if the source is
the same as the destination or if the number of bands in
the source is not equal to the number of bands in the
destination.
The coordinates of the rectangle returned by
getBounds2D(Raster)
are not necessarily the same as the coordinates of the
WritableRaster returned by this method. If the
upper-left corner coordinates of rectangle are negative then
this part of the rectangle is not drawn. If the coordinates
of the rectangle are positive then the filtered image is drawn at
that position in the destination Raster.
filter in interface RasterOpsrc - The Raster to transform.dst - The Raster in which to store the results of the
transformation.
Raster.
ImagingOpException - if the raster cannot be transformed
because of a data-processing error that might be
caused by an invalid image format, tile format, or
image-processing operation, or any other unsupported
operation.public final Rectangle2D getBounds2D(BufferedImage src)
getBounds2D in interface BufferedImageOpsrc - The BufferedImage to be transformed.
Rectangle2D representing the destination's
bounding box.public final Rectangle2D getBounds2D(Raster src)
getBounds2D in interface RasterOpsrc - The Raster to be transformed.
Rectangle2D representing the destination's
bounding box.
public BufferedImage createCompatibleDestImage(BufferedImage src,
ColorModel destCM)
RasterFormatException may be thrown if the
transformed width or height is equal to 0.
If destCM is null,
an appropriate ColorModel is used; this
ColorModel may have
an alpha channel even if the source ColorModel is opaque.
createCompatibleDestImage in interface BufferedImageOpsrc - The BufferedImage to be transformed.destCM - ColorModel of the destination. If null,
an appropriate ColorModel is used.
public WritableRaster createCompatibleDestRaster(Raster src)
Raster with the correct size
and number of bands. A RasterFormatException may be thrown
if the transformed width or height is equal to 0.
createCompatibleDestRaster in interface RasterOpsrc - The Raster to be transformed.
Raster.
public final Point2D getPoint2D(Point2D srcPt,
Point2D dstPt)
dstPt is specified, it
is used to hold the return value.
getPoint2D in interface BufferedImageOpsrcPt - The Point2D that represents the source
point.dstPt - The Point2D in which to store the result.
Point2D in the destination that corresponds to
the specified point in the source.public final AffineTransform getTransform()
AffineTransform associated with this op.public final RenderingHints getRenderingHints()
getRenderingHints in interface BufferedImageOpRenderingHints object associated with this op.
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JavaTM 2 Platform Std. Ed. v1.4.2 |
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Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.