public class AffineTransformOp extends Object implements BufferedImageOp, RasterOp
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.
Modifier and Type | Field and Description |
---|---|
static int |
TYPE_BICUBIC
Bicubic interpolation type.
|
static int |
TYPE_BILINEAR
Bilinear interpolation type.
|
static int |
TYPE_NEAREST_NEIGHBOR
Nearest-neighbor interpolation type.
|
Constructor and Description |
---|
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. |
Modifier and Type | Method and Description |
---|---|
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.
|
@Native public static final int TYPE_NEAREST_NEIGHBOR
@Native public static final int TYPE_BILINEAR
@Native public static final int TYPE_BICUBIC
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
,
TYPE_BICUBIC
.ImagingOpException
- if the transform is non-invertible.public final int getInterpolationType()
TYPE_NEAREST_NEIGHBOR
,
TYPE_BILINEAR
,
TYPE_BICUBIC
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 BufferedImageOp
src
- The BufferedImage
to transform.dst
- The BufferedImage
in which to store the results
of the transformation.BufferedImage
.IllegalArgumentException
- if src
and
dst
are the sameImagingOpException
- 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 RasterOp
src
- 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 BufferedImageOp
src
- The BufferedImage
to be transformed.Rectangle2D
representing the destination's
bounding box.public final Rectangle2D getBounds2D(Raster src)
getBounds2D
in interface RasterOp
src
- 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 BufferedImageOp
src
- 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 RasterOp
src
- 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 BufferedImageOp
getPoint2D
in interface RasterOp
srcPt
- 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 BufferedImageOp
getRenderingHints
in interface RasterOp
RenderingHints
object associated with this op. Submit a bug or feature
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