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Préférences
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| JavaTM 2 Platform Std. Ed. v1.4.2
java.awt.image
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| Field Summary |
| Fields inherited from class java.awt.image.SampleModel |
dataType, height, numBands, width |
| Constructor Summary | |
MultiPixelPackedSampleModel(int dataType,
int w,
int h,
int numberOfBits)
Constructs a MultiPixelPackedSampleModel with the
specified data type, width, height and number of bits per pixel. |
|
MultiPixelPackedSampleModel(int dataType,
int w,
int h,
int numberOfBits,
int scanlineStride,
int dataBitOffset)
Constructs a MultiPixelPackedSampleModel with
specified data type, width, height, number of bits per pixel,
scanline stride and data bit offset. |
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| Method Summary | |
SampleModel |
createCompatibleSampleModel(int w,
int h)
Creates a new MultiPixelPackedSampleModel with the
specified width and height. |
DataBuffer |
createDataBuffer()
Creates a DataBuffer that corresponds to this
MultiPixelPackedSampleModel. |
SampleModel |
createSubsetSampleModel(int[] bands)
Creates a new MultiPixelPackedSampleModel with a
subset of the bands of this
MultiPixelPackedSampleModel. |
boolean |
equals(Object o)
Indicates whether some other object is "equal to" this one. |
int |
getBitOffset(int x)
Returns the offset, in bits, into the data element in which it is stored for the xth pixel of a scanline. |
int |
getDataBitOffset()
Returns the data bit offset in bits. |
Object |
getDataElements(int x,
int y,
Object obj,
DataBuffer data)
Returns data for a single pixel in a primitive array of type TransferType. |
int |
getNumDataElements()
Returns the number of data elements needed to transfer one pixel via the getDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer) and setDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer)
methods. |
int |
getOffset(int x,
int y)
Returns the offset of pixel (x, y) in data array elements. |
int[] |
getPixel(int x,
int y,
int[] iArray,
DataBuffer data)
Returns the specified single band pixel in the first element of an int array. |
int |
getPixelBitStride()
Returns the pixel bit stride in bits. |
int |
getSample(int x,
int y,
int b,
DataBuffer data)
Returns as int the sample in a specified band for the
pixel located at (x, y). |
int[] |
getSampleSize()
Returns the number of bits per sample for all bands. |
int |
getSampleSize(int band)
Returns the number of bits per sample for the specified band. |
int |
getScanlineStride()
Returns the scanline stride. |
int |
getTransferType()
Returns the TransferType used to transfer pixels by way of the getDataElements and setDataElements
methods. |
int |
hashCode()
Returns a hash code value for the object. |
void |
setDataElements(int x,
int y,
Object obj,
DataBuffer data)
Sets the data for a single pixel in the specified DataBuffer from a primitive array of type
TransferType. |
void |
setPixel(int x,
int y,
int[] iArray,
DataBuffer data)
Sets a pixel in the DataBuffer using an
int array for input. |
void |
setSample(int x,
int y,
int b,
int s,
DataBuffer data)
Sets a sample in the specified band for the pixel located at (x, y) in the DataBuffer using an
int for input. |
| Methods inherited from class java.awt.image.SampleModel |
getDataElements, getDataType, getHeight, getNumBands, getPixel, getPixel, getPixels, getPixels, getPixels, getSampleDouble, getSampleFloat, getSamples, getSamples, getSamples, getWidth, setDataElements, setPixel, setPixel, setPixels, setPixels, setPixels, setSample, setSample, setSamples, setSamples, setSamples |
| Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public MultiPixelPackedSampleModel(int dataType,
int w,
int h,
int numberOfBits)
MultiPixelPackedSampleModel with the
specified data type, width, height and number of bits per pixel.
dataType - the data type for storing samplesw - the width, in pixels, of the region of
image data describedh - the height, in pixels, of the region of
image data describednumberOfBits - the number of bits per pixel
IllegalArgumentException - if dataType is not
either DataBuffer.TYPE_BYTE,
DataBuffer.TYPE_USHORT, or
DataBuffer.TYPE_INT
public MultiPixelPackedSampleModel(int dataType,
int w,
int h,
int numberOfBits,
int scanlineStride,
int dataBitOffset)
MultiPixelPackedSampleModel with
specified data type, width, height, number of bits per pixel,
scanline stride and data bit offset.
dataType - the data type for storing samplesw - the width, in pixels, of the region of
image data describedh - the height, in pixels, of the region of
image data describednumberOfBits - the number of bits per pixelscanlineStride - the line stride of the image datadataBitOffset - the data bit offset for the region of image
data described
RasterFormatException - if the number of bits per pixel
is not a power of 2 or if a power of 2 number of
pixels do not fit in one data element.
IllegalArgumentException - if w or
h is not greater than 0
IllegalArgumentException - if dataType is not
either DataBuffer.TYPE_BYTE,
DataBuffer.TYPE_USHORT, or
DataBuffer.TYPE_INT| Method Detail |
public SampleModel createCompatibleSampleModel(int w, int h)
MultiPixelPackedSampleModel with the
specified width and height. The new
MultiPixelPackedSampleModel has the
same storage data type and number of bits per pixel as this
MultiPixelPackedSampleModel.
createCompatibleSampleModel in class SampleModelw - the specified widthh - the specified height
SampleModel with the specified width and height
and with the same storage data type and number of bits per pixel
as this MultiPixelPackedSampleModel.
IllegalArgumentException - if w or
h is not greater than 0public DataBuffer createDataBuffer()
DataBuffer that corresponds to this
MultiPixelPackedSampleModel. The
DataBuffer object's data type and size
is consistent with this MultiPixelPackedSampleModel.
The DataBuffer has a single bank.
createDataBuffer in class SampleModelDataBuffer with the same data type and
size as this MultiPixelPackedSampleModel.public int getNumDataElements()
getDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer) and setDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer)
methods. For a MultiPixelPackedSampleModel, this is
one.
getNumDataElements in class SampleModelSampleModel.getDataElements(int, int, Object, DataBuffer),
SampleModel.getDataElements(int, int, int, int, Object, DataBuffer),
SampleModel.setDataElements(int, int, Object, DataBuffer),
SampleModel.setDataElements(int, int, int, int, Object, DataBuffer),
SampleModel.getTransferType()public int[] getSampleSize()
getSampleSize in class SampleModelpublic int getSampleSize(int band)
getSampleSize in class SampleModelband - the specified band
public int getOffset(int x,
int y)
public int getBitOffset(int x)
xth pixel of a scanline.
This offset is the same for all scanlines.
x - the specified pixel
public int getScanlineStride()
MultiPixelPackedSampleModel.public int getPixelBitStride()
pixelBitStride of this
MultiPixelPackedSampleModel.public int getDataBitOffset()
dataBitOffset of this
MultiPixelPackedSampleModel.public int getTransferType()
getDataElements and setDataElements
methods. The TransferType might or might not be the same as the
storage DataType. The TransferType is one of
DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT,
or DataBuffer.TYPE_INT.
getTransferType in class SampleModelSampleModel.getDataElements(int, int, Object, DataBuffer),
SampleModel.getDataElements(int, int, int, int, Object, DataBuffer),
SampleModel.setDataElements(int, int, Object, DataBuffer),
SampleModel.setDataElements(int, int, int, int, Object, DataBuffer),
SampleModel.getNumDataElements(),
DataBufferpublic SampleModel createSubsetSampleModel(int[] bands)
MultiPixelPackedSampleModel with a
subset of the bands of this
MultiPixelPackedSampleModel. Since a
MultiPixelPackedSampleModel only has one band, the
bands argument must have a length of one and indicate the zeroth
band.
createSubsetSampleModel in class SampleModelbands - the specified bands
SampleModel with a subset of bands of
this MultiPixelPackedSampleModel.
RasterFormatException - if the number of bands requested
is not one.
IllegalArgumentException - if w or
h is not greater than 0
public int getSample(int x,
int y,
int b,
DataBuffer data)
int the sample in a specified band for the
pixel located at (x, y). An
ArrayIndexOutOfBoundsException is thrown if the
coordinates are not in bounds.
getSample in class SampleModelb - the band to return, which is assumed to be 0data - the DataBuffer containing the image
datax - The X coordinate of the pixel location.y - The Y coordinate of the pixel location.
ArrayIndexOutOfBoundException - if the specified
coordinates are not in bounds.setSample(int, int, int, int, DataBuffer)
public void setSample(int x,
int y,
int b,
int s,
DataBuffer data)
DataBuffer using an
int for input.
An ArrayIndexOutOfBoundsException is thrown if the
coordinates are not in bounds.
setSample in class SampleModelb - the band to return, which is assumed to be 0s - the input sample as an intdata - the DataBuffer where image data is storedx - The X coordinate of the pixel location.y - The Y coordinate of the pixel location.
ArrayIndexOutOfBoundsException - if the coordinates are
not in bounds.getSample(int, int, int, DataBuffer)public Object getDataElements(int x, int y, Object obj, DataBuffer data)
MultiPixelPackedSampleModel,
the array has one element, and the type is the smallest of
DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, or DataBuffer.TYPE_INT
that can hold a single pixel. Generally, obj
should be passed in as null, so that the
Object is created automatically and is the
correct primitive data type.
The following code illustrates transferring data for one pixel from
DataBuffer db1, whose storage layout is
described by MultiPixelPackedSampleModel
mppsm1, to DataBuffer db2,
whose storage layout is described by
MultiPixelPackedSampleModel mppsm2.
The transfer is generally more efficient than using
getPixel or setPixel.
MultiPixelPackedSampleModel mppsm1, mppsm2;
DataBufferInt db1, db2;
mppsm2.setDataElements(x, y, mppsm1.getDataElements(x, y, null,
db1), db2);
Using getDataElements or setDataElements
to transfer between two DataBuffer/SampleModel pairs
is legitimate if the SampleModels have the same number
of bands, corresponding bands have the same number of
bits per sample, and the TransferTypes are the same.
If obj is not null, it should be a
primitive array of type TransferType. Otherwise, a
ClassCastException is thrown. An
ArrayIndexOutOfBoundsException is thrown if the
coordinates are not in bounds, or if obj is not
null and is not large enough to hold the pixel data.
getDataElements in class SampleModelobj - a primitive array in which to return the pixel data or
null.data - the DataBuffer containing the image data.x - The X coordinate of the pixel location.y - The Y coordinate of the pixel location.
Object containing data for the specified
pixel.
ClassCastException - if obj is not a
primitive array of type TransferType or is not null
ArrayIndexOutOfBoundsException - if the coordinates are
not in bounds, or if obj is not null or
not large enough to hold the pixel datasetDataElements(int, int, Object, DataBuffer)
public int[] getPixel(int x,
int y,
int[] iArray,
DataBuffer data)
int array.
ArrayIndexOutOfBoundsException is thrown if the
coordinates are not in bounds.
getPixel in class SampleModeliArray - the array containing the pixel to be returned or
nulldata - the DataBuffer where image data is stored
ArrayIndexOutOfBoundsException - if the coordinates
are not in boundssetPixel(int, int, int[], DataBuffer)
public void setDataElements(int x,
int y,
Object obj,
DataBuffer data)
DataBuffer from a primitive array of type
TransferType. For a MultiPixelPackedSampleModel,
only the first element of the array holds valid data,
and the type must be the smallest of
DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, or DataBuffer.TYPE_INT
that can hold a single pixel.
The following code illustrates transferring data for one pixel from
DataBuffer db1, whose storage layout is
described by MultiPixelPackedSampleModel
mppsm1, to DataBuffer db2,
whose storage layout is described by
MultiPixelPackedSampleModel mppsm2.
The transfer is generally more efficient than using
getPixel or setPixel.
MultiPixelPackedSampleModel mppsm1, mppsm2;
DataBufferInt db1, db2;
mppsm2.setDataElements(x, y, mppsm1.getDataElements(x, y, null,
db1), db2);
Using getDataElements or setDataElements to
transfer between two DataBuffer/SampleModel pairs is
legitimate if the SampleModel objects have
the same number of bands, corresponding bands have the same number of
bits per sample, and the TransferTypes are the same.
obj must be a primitive array of type TransferType.
Otherwise, a ClassCastException is thrown. An
ArrayIndexOutOfBoundsException is thrown if the
coordinates are not in bounds, or if obj is not large
enough to hold the pixel data.
setDataElements in class SampleModelobj - a primitive array containing pixel datadata - the DataBuffer containing the image datax - The X coordinate of the pixel location.y - The Y coordinate of the pixel location.getDataElements(int, int, Object, DataBuffer)
public void setPixel(int x,
int y,
int[] iArray,
DataBuffer data)
DataBuffer using an
int array for input.
ArrayIndexOutOfBoundsException is thrown if
the coordinates are not in bounds.
setPixel in class SampleModeliArray - the input pixel in an int arraydata - the DataBuffer containing the image datax - The X coordinate of the pixel location.y - The Y coordinate of the pixel location.getPixel(int, int, int[], DataBuffer)public boolean equals(Object o)
Object
The equals method implements an equivalence relation
on non-null object references:
x, x.equals(x) should return
true.
x and y, x.equals(y)
should return true if and only if
y.equals(x) returns true.
x, y, and z, if
x.equals(y) returns true and
y.equals(z) returns true, then
x.equals(z) should return true.
x and y, multiple invocations of
x.equals(y) consistently return true
or consistently return false, provided no
information used in equals comparisons on the
objects is modified.
x,
x.equals(null) should return false.
The equals method for class Object implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x and
y, this method returns true if and only
if x and y refer to the same object
(x == y has the value true).
Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.
o - the reference object with which to compare.
true if this object is the same as the obj
argument; false otherwise.Object.hashCode(),
Hashtablepublic int hashCode()
Objectjava.util.Hashtable.
The general contract of hashCode is:
hashCode method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hashtables.
As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (This is typically implemented by converting the internal address of the object into an integer, but this implementation technique is not required by the JavaTM programming language.)
Object.equals(java.lang.Object),
Hashtable