WritableRaster
A class representing a rectangular array of pixels. A Raster encapsulates a DataBuffer that stores the sample values and a SampleModel that describes how to locate a given sample value in a DataBuffer.
A Raster defines values for pixels occupying a particular rectangular area of the plane, not necessarily including (0, 0). The rectangle, known as the Raster's bounding rectangle and available by means of the getBounds method, is defined by minX, minY, width, and height values. The minX and minY values define the coordinate of the upper left corner of the Raster. References to pixels outside of the bounding rectangle may result in an exception being thrown, or may result in references to unintended elements of the Raster's associated DataBuffer. It is the user's responsibility to avoid accessing such pixels.
A SampleModel describes how samples of a Raster are stored in the primitive array elements of a DataBuffer. Samples may be stored one per data element, as in a PixelInterleavedSampleModel or BandedSampleModel, or packed several to an element, as in a SinglePixelPackedSampleModel or MultiPixelPackedSampleModel. The SampleModel is also controls whether samples are sign extended, allowing unsigned data to be stored in signed Java data types such as byte, short, and int.
Although a Raster may live anywhere in the plane, a SampleModel makes use of a simple coordinate system that starts at (0, 0). A Raster therefore contains a translation factor that allows pixel locations to be mapped between the Raster's coordinate system and that of the SampleModel. The translation from the SampleModel coordinate system to that of the Raster may be obtained by the getSampleModelTranslateX and getSampleModelTranslateY methods.
A Raster may share a DataBuffer with another Raster either by explicit construction or by the use of the createChild and createTranslatedChild methods. Rasters created by these methods can return a reference to the Raster they were created from by means of the getParent method. For a Raster that was not constructed by means of a call to createTranslatedChild or createChild, getParent will return null.
The createTranslatedChild method returns a new Raster that shares all of the data of the current Raster, but occupies a bounding rectangle of the same width and height but with a different starting point. For example, if the parent Raster occupied the region (10, 10) to (100, 100), and the translated Raster was defined to start at (50, 50), then pixel (20, 20) of the parent and pixel (60, 60) of the child occupy the same location in the DataBuffer shared by the two Rasters. In the first case, (-10, -10) should be added to a pixel coordinate to obtain the corresponding SampleModel coordinate, and in the second case (-50, -50) should be added.
The translation between a parent and child Raster may be determined by subtracting the child's sampleModelTranslateX and sampleModelTranslateY values from those of the parent.
The createChild method may be used to create a new Raster occupying only a subset of its parent's bounding rectangle (with the same or a translated coordinate system) or with a subset of the bands of its parent.
All constructors are protected. The correct way to create a Raster is to use one of the static create methods defined in this class. These methods create instances of Raster that use the standard Interleaved, Banded, and Packed SampleModels and that may be processed more efficiently than a Raster created by combining an externally generated SampleModel and DataBuffer.
Fields
The DataBuffer that stores the image data.
protected int
The height of this Raster.
protected int
The X coordinate of the upper-left pixel of this Raster.
protected int
The Y coordinate of the upper-left pixel of this Raster.
protected int
The number of bands in the Raster.
protected int
The number of DataBuffer data elements per pixel.
The parent of this Raster, or null.
The SampleModel that describes how pixels from this Raster are stored in the DataBuffer.
protected int
The X translation from the coordinate space of the Raster's SampleModel to that of the Raster.
protected int
The Y translation from the coordinate space of the Raster's SampleModel to that of the Raster.
protected int
The width of this Raster.
Constructors
protected
Constructs a Raster with the given SampleModel and DataBuffer.
protected
Constructs a Raster with the given SampleModel, DataBuffer, and parent.
protected
Constructs a Raster with the given SampleModel.
createBandedRaster(int dataType, int w, int h, int scanlineStride, int[] bankIndices, int[] bandOffsets, Point location)
Creates a Raster based on a BandedSampleModel with the specified data type, width, height, scanline stride, bank indices and band offsets.
Creates a Raster based on a BandedSampleModel with the specified data type, width, height, and number of bands.
Creates a Raster based on a BandedSampleModel with the specified DataBuffer, width, height, scanline stride, bank indices, and band offsets.
createChild(int parentX, int parentY, int width, int height, int childMinX, int childMinY, int[] bandList)
Returns a new Raster which shares all or part of this Raster's DataBuffer.
Create a compatible WritableRaster the same size as this Raster with the same SampleModel and a new initialized DataBuffer.
Create a compatible WritableRaster with the specified size, a new SampleModel, and a new initialized DataBuffer.
Create a compatible WritableRaster with the specified location (minX, minY) and size (width, height), a new SampleModel, and a new initialized DataBuffer.
Create a compatible WritableRaster with location (minX, minY) and size (width, height) specified by rect, a new SampleModel, and a new initialized DataBuffer.
Creates a Raster based on a PixelInterleavedSampleModel with the specified data type, width, height, scanline stride, pixel stride, and band offsets.
Creates a Raster based on a PixelInterleavedSampleModel with the specified data type, width, height, and number of bands.
Creates a Raster based on a PixelInterleavedSampleModel with the specified DataBuffer, width, height, scanline stride, pixel stride, and band offsets.
Creates a Raster based on a SinglePixelPackedSampleModel with the specified data type, width, height, and band masks.
Creates a Raster based on a packed SampleModel with the specified data type, width, height, number of bands, and bits per band.
Creates a Raster based on a SinglePixelPackedSampleModel with the specified DataBuffer, width, height, scanline stride, and band masks.
Creates a Raster based on a MultiPixelPackedSampleModel with the specified DataBuffer, width, height, and bits per pixel.
Creates a Raster with the specified SampleModel and DataBuffer.
Create a Raster with the same size, SampleModel and DataBuffer as this one, but with a different location.
Creates a WritableRaster with the specified SampleModel and DataBuffer.
Creates a WritableRaster with the specified SampleModel.
Returns the bounding Rectangle of this Raster.
Returns the DataBuffer associated with this Raster.
Returns the pixel data for the specified rectangle of pixels in a primitive array of type TransferType.
Returns data for a single pixel in a primitive array of type TransferType.
final int
Returns the height in pixels of the Raster.
final int
Returns the minimum valid X coordinate of the Raster.
final int
Returns the minimum valid Y coordinate of the Raster.
final int
Returns the number of bands (samples per pixel) in this Raster.
final int
Returns the number of data elements needed to transfer one pixel via the getDataElements and setDataElements methods.
Returns the parent Raster (if any) of this Raster or null.
double[]
Returns the samples in an array of double for the specified pixel.
float[]
Returns the samples in an array of float for the specified pixel.
int[]
Returns the samples in an array of int for the specified pixel.
double[]
getPixels(int x, int y, int w, int h, double[] dArray)
Returns a double array containing all samples for a rectangle of pixels, one sample per array element.
float[]
getPixels(int x, int y, int w, int h, float[] fArray)
Returns a float array containing all samples for a rectangle of pixels, one sample per array element.
int[]
getPixels(int x, int y, int w, int h, int[] iArray)
Returns an int array containing all samples for a rectangle of pixels, one sample per array element.
int
Returns the sample in a specified band for the pixel located at (x,y) as an int.
double
Returns the sample in a specified band for a pixel located at (x,y) as a double.
float
Returns the sample in a specified band for the pixel located at (x,y) as a float.
Returns the SampleModel that describes the layout of the image data.
final int
Returns the X translation from the coordinate system of the SampleModel to that of the Raster.
final int
Returns the Y translation from the coordinate system of the SampleModel to that of the Raster.
double[]
getSamples(int x, int y, int w, int h, int b, double[] dArray)
Returns the samples for a specified band for a specified rectangle of pixels in a double array, one sample per array element.
float[]
getSamples(int x, int y, int w, int h, int b, float[] fArray)
Returns the samples for a specified band for the specified rectangle of pixels in a float array, one sample per array element.
int[]
getSamples(int x, int y, int w, int h, int b, int[] iArray)
Returns the samples for a specified band for the specified rectangle of pixels in an int array, one sample per array element.
final int
Returns the TransferType used to transfer pixels via the getDataElements and setDataElements methods.
final int
Returns the width in pixels of the Raster.
Methods declared in class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitThe SampleModel that describes how pixels from this Raster are stored in the DataBuffer.
The DataBuffer that stores the image data.
protected int minX
The X coordinate of the upper-left pixel of this Raster.
protected int minY
The Y coordinate of the upper-left pixel of this Raster.
protected int width
The width of this Raster.
protected int height
The height of this Raster.
protected int sampleModelTranslateX
The X translation from the coordinate space of the Raster's SampleModel to that of the Raster.
protected int sampleModelTranslateY
The Y translation from the coordinate space of the Raster's SampleModel to that of the Raster.
protected int numBands
The number of bands in the Raster.
protected int numDataElements
The number of DataBuffer data elements per pixel.
The parent of this Raster, or null.
Constructs a Raster with the given SampleModel. The Raster's upper left corner is origin and it is the same size as the SampleModel. A DataBuffer large enough to describe the Raster is automatically created.
sampleModel - The SampleModel that specifies the layout
origin - The Point that specified the origin
RasterFormatException - if computing either origin.x + sampleModel.getWidth() or origin.y + sampleModel.getHeight() results in integer overflow
NullPointerException - either sampleModel or origin is null
Constructs a Raster with the given SampleModel and DataBuffer. The Raster's upper left corner is origin and it is the same size as the SampleModel. The DataBuffer is not initialized and must be compatible with SampleModel.
sampleModel - The SampleModel that specifies the layout
dataBuffer - The DataBuffer that contains the image data
origin - The Point that specifies the origin
RasterFormatException - if computing either origin.x + sampleModel.getWidth() or origin.y + sampleModel.getHeight() results in integer overflow
NullPointerException - either sampleModel or origin is null
Constructs a Raster with the given SampleModel, DataBuffer, and parent. aRegion specifies the bounding rectangle of the new Raster. When translated into the base Raster's coordinate system, aRegion must be contained by the base Raster. (The base Raster is the Raster's ancestor which has no parent.) sampleModelTranslate specifies the sampleModelTranslateX and sampleModelTranslateY values of the new Raster. Note that this constructor should generally be called by other constructors or create methods, it should not be used directly.
sampleModel - The SampleModel that specifies the layout
dataBuffer - The DataBuffer that contains the image data
aRegion - The Rectangle that specifies the image area
sampleModelTranslate - The Point that specifies the translation from SampleModel to Raster coordinates
parent - The parent (if any) of this raster
NullPointerException - if any of sampleModel, dataBuffer, aRegion or sampleModelTranslate is null
RasterFormatException - if aRegion has width or height less than or equal to zero, or computing either aRegion.x + aRegion.width or aRegion.y + aRegion.height results in integer overflow
Creates a Raster based on a PixelInterleavedSampleModel with the specified data type, width, height, and number of bands.
The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used. The dataType parameter should be one of the enumerated values defined in the DataBuffer class.
Note that interleaved DataBuffer.TYPE_INT Rasters are not supported. To create a 1-band Raster of type DataBuffer.TYPE_INT, use Raster.createPackedRaster().
The only dataTypes supported currently are TYPE_BYTE and TYPE_USHORT.
dataType - the data type for storing samples
w - the width in pixels of the image data
h - the height in pixels of the image data
bands - the number of bands
location - the upper-left corner of the Raster
IllegalArgumentException - if dataType is not one of the supported data types
IllegalArgumentException - if bands is less than 1
IllegalArgumentException - if w and h are not both > 0
IllegalArgumentException - if the product of w and h is greater than Integer.MAX_VALUE
RasterFormatException - if computing either location.x + w or location.y + h results in integer overflow
Creates a Raster based on a PixelInterleavedSampleModel with the specified data type, width, height, scanline stride, pixel stride, and band offsets. The number of bands is inferred from bandOffsets.length.
The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used. The dataType parameter should be one of the enumerated values defined in the DataBuffer class.
Note that interleaved DataBuffer.TYPE_INT Rasters are not supported. To create a 1-band Raster of type DataBuffer.TYPE_INT, use Raster.createPackedRaster().
The only dataTypes supported currently are TYPE_BYTE and TYPE_USHORT.
dataType - the data type for storing samples
w - the width in pixels of the image data
h - the height in pixels of the image data
scanlineStride - the line stride of the image data
pixelStride - the pixel stride of the image data
bandOffsets - the offsets of all bands
location - the upper-left corner of the Raster
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, or DataBuffer.TYPE_USHORT.
IllegalArgumentException - if w and h are not both > 0
IllegalArgumentException - if the product of w and h is greater than Integer.MAX_VALUE
RasterFormatException - if computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if scanlineStride is less than 0
IllegalArgumentException - if pixelStride is less than 0
NullPointerException - if bandOffsets is null
Creates a Raster based on a BandedSampleModel with the specified data type, width, height, and number of bands.
The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used. The dataType parameter should be one of the enumerated values defined in the DataBuffer class.
The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT, and TYPE_INT.
dataType - the data type for storing samples
w - the width in pixels of the image data
h - the height in pixels of the image data
bands - the number of bands
location - the upper-left corner of the Raster
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT
IllegalArgumentException - if w and h are not both greater than 0
IllegalArgumentException - if the product of w and h is greater than Integer.MAX_VALUE
IllegalArgumentException - if computing either location.x + w or location.y + h results in integer overflow
ArrayIndexOutOfBoundsException - if bands is less than 1
Creates a Raster based on a BandedSampleModel with the specified data type, width, height, scanline stride, bank indices and band offsets. The number of bands is inferred from bankIndices.length and bandOffsets.length, which must be the same.
The upper left corner of the Raster is given by the location argument. The dataType parameter should be one of the enumerated values defined in the DataBuffer class.
The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT, and TYPE_INT.
dataType - the data type for storing samples
w - the width in pixels of the image data
h - the height in pixels of the image data
scanlineStride - the line stride of the image data
bankIndices - the bank indices for each band
bandOffsets - the offsets of all bands
location - the upper-left corner of the Raster
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT
IllegalArgumentException - if w and h are not both greater than 0
IllegalArgumentException - if the product of w and h is greater than Integer.MAX_VALUE
IllegalArgumentException - if computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if scanlineStride is less than 0
ArrayIndexOutOfBoundsException - if bankIndices is null
NullPointerException - if bandOffsets is null
Creates a Raster based on a SinglePixelPackedSampleModel with the specified data type, width, height, and band masks. The number of bands is inferred from bandMasks.length.
The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used. The dataType parameter should be one of the enumerated values defined in the DataBuffer class.
The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT, and TYPE_INT.
dataType - the data type for storing samples
w - the width in pixels of the image data
h - the height in pixels of the image data
bandMasks - an array containing an entry for each band
location - the upper-left corner of the Raster
RasterFormatException - if w or h is less than or equal to zero, or computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT
Creates a Raster based on a packed SampleModel with the specified data type, width, height, number of bands, and bits per band. If the number of bands is one, the SampleModel will be a MultiPixelPackedSampleModel.
If the number of bands is more than one, the SampleModel will be a SinglePixelPackedSampleModel, with each band having bitsPerBand bits. In either case, the requirements on dataType and bitsPerBand imposed by the corresponding SampleModel must be met.
The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used. The dataType parameter should be one of the enumerated values defined in the DataBuffer class.
The only dataTypes supported currently are TYPE_BYTE, TYPE_USHORT, and TYPE_INT.
dataType - the data type for storing samples
w - the width in pixels of the image data
h - the height in pixels of the image data
bands - the number of bands
bitsPerBand - the number of bits per band
location - the upper-left corner of the Raster
RasterFormatException - if w or h is less than or equal to zero, or computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if the product of bitsPerBand and bands is greater than the number of bits held by dataType
IllegalArgumentException - if bitsPerBand or bands is not greater than zero
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT
Note that interleaved DataBuffer.TYPE_INT Rasters are not supported. To create a 1-band Raster of type DataBuffer.TYPE_INT, use Raster.createPackedRaster().
dataBuffer - the DataBuffer that contains the image data
w - the width in pixels of the image data
h - the height in pixels of the image data
scanlineStride - the line stride of the image data
pixelStride - the pixel stride of the image data
bandOffsets - the offsets of all bands
location - the upper-left corner of the Raster
DataBuffer, width, height, scanline stride, pixel stride and band offsets.
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT
NullPointerException - if dataBuffer is null
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, or DataBuffer.TYPE_USHORT.
RasterFormatException - if dataBuffer has more than one bank.
IllegalArgumentException - if w and h are not both > 0
IllegalArgumentException - if the product of w and h is greater than Integer.MAX_VALUE
RasterFormatException - if computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if scanlineStride is less than 0
IllegalArgumentException - if pixelStride is less than 0
NullPointerException - if bandOffsets is null
Creates a Raster based on a BandedSampleModel with the specified DataBuffer, width, height, scanline stride, bank indices, and band offsets. The number of bands is inferred from bankIndices.length and bandOffsets.length, which must be the same. The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used.
dataBuffer - the DataBuffer that contains the image data
w - the width in pixels of the image data
h - the height in pixels of the image data
scanlineStride - the line stride of the image data
bankIndices - the bank indices for each band
bandOffsets - the offsets of all bands
location - the upper-left corner of the Raster
DataBuffer, width, height, scanline stride, bank indices and band offsets.
NullPointerException - if dataBuffer is null, or bankIndices is null, or bandOffsets is null
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT, or if w or h is less than or equal to zero, or if the product of w and h is greater than Integer.MAX_VALUE or if scanlineStride is less than zero, or if the length of bankIndices does not equal the length of bandOffsets
RasterFormatException - if computing either location.x + w or location.y + h results in integer overflow
Creates a Raster based on a SinglePixelPackedSampleModel with the specified DataBuffer, width, height, scanline stride, and band masks. The number of bands is inferred from bandMasks.length. The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used.
dataBuffer - the DataBuffer that contains the image data
w - the width in pixels of the image data
h - the height in pixels of the image data
scanlineStride - the line stride of the image data
bandMasks - an array containing an entry for each band
location - the upper-left corner of the Raster
DataBuffer, width, height, scanline stride, and band masks.
RasterFormatException - if w or h is less than or equal to zero, or computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if dataBuffer is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT
RasterFormatException - if dataBuffer has more than one bank.
NullPointerException - if dataBuffer is null
Creates a Raster based on a MultiPixelPackedSampleModel with the specified DataBuffer, width, height, and bits per pixel. The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used.
dataBuffer - the DataBuffer that contains the image data
w - the width in pixels of the image data
h - the height in pixels of the image data
bitsPerPixel - the number of bits for each pixel
location - the upper-left corner of the Raster
DataBuffer, width, height, and bits per pixel.
RasterFormatException - if w or h is less than or equal to zero, or computing either location.x + w or location.y + h results in integer overflow
IllegalArgumentException - if dataType is not one of the supported data types, which are DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT or DataBuffer.TYPE_INT
RasterFormatException - if dataBuffer has more than one bank.
NullPointerException - if dataBuffer is null
Creates a Raster with the specified SampleModel and DataBuffer. The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used.
sm - the specified SampleModel
db - the specified DataBuffer
location - the upper-left corner of the Raster
Raster with the specified SampleModel, DataBuffer, and location.
RasterFormatException - if computing either location.x + sm.getWidth() or location.y + sm.getHeight() results in integer overflow
RasterFormatException - if db has more than one bank and sm is a PixelInterleavedSampleModel, SinglePixelPackedSampleModel, or MultiPixelPackedSampleModel.
NullPointerException - if either SampleModel or DataBuffer is null
Creates a WritableRaster with the specified SampleModel. The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used.
sm - the specified SampleModel
location - the upper-left corner of the WritableRaster
WritableRaster with the specified SampleModel and location.
RasterFormatException - if computing either location.x + sm.getWidth() or location.y + sm.getHeight() results in integer overflow
Creates a WritableRaster with the specified SampleModel and DataBuffer. The upper left corner of the Raster is given by the location argument. If location is null, (0, 0) will be used.
sm - the specified SampleModel
db - the specified DataBuffer
location - the upper-left corner of the WritableRaster
WritableRaster with the specified SampleModel, DataBuffer, and location.
RasterFormatException - if computing either location.x + sm.getWidth() or location.y + sm.getHeight() results in integer overflow
RasterFormatException - if db has more than one bank and sm is a PixelInterleavedSampleModel, SinglePixelPackedSampleModel, or MultiPixelPackedSampleModel.
NullPointerException - if either SampleModel or DataBuffer is null
Returns the parent Raster (if any) of this Raster or null.
null.
public final int getSampleModelTranslateX()
Returns the X translation from the coordinate system of the SampleModel to that of the Raster. To convert a pixel's X coordinate from the Raster coordinate system to the SampleModel coordinate system, this value must be subtracted.
public final int getSampleModelTranslateY()
Returns the Y translation from the coordinate system of the SampleModel to that of the Raster. To convert a pixel's Y coordinate from the Raster coordinate system to the SampleModel coordinate system, this value must be subtracted.
Create a compatible WritableRaster the same size as this Raster with the same SampleModel and a new initialized DataBuffer.
WritableRaster with the same sample model and a new data buffer.
Create a compatible WritableRaster with the specified size, a new SampleModel, and a new initialized DataBuffer.
w - the specified width of the new WritableRaster
h - the specified height of the new WritableRaster
WritableRaster with the specified size and a new sample model and data buffer.
RasterFormatException - if the width or height is less than or equal to zero.
Create a compatible WritableRaster with location (minX, minY) and size (width, height) specified by rect, a new SampleModel, and a new initialized DataBuffer.
rect - a Rectangle that specifies the size and location of the WritableRaster
WritableRaster with the specified size and location and a new sample model and data buffer.
RasterFormatException - if rect has width or height less than or equal to zero, or computing either rect.x + rect.width or rect.y + rect.height results in integer overflow
NullPointerException - if rect is null
Create a compatible WritableRaster with the specified location (minX, minY) and size (width, height), a new SampleModel, and a new initialized DataBuffer.
x - the X coordinate of the upper-left corner of the WritableRaster
y - the Y coordinate of the upper-left corner of the WritableRaster
w - the specified width of the WritableRaster
h - the specified height of the WritableRaster
WritableRaster with the specified size and location and a new sample model and data buffer.
RasterFormatException - if w or h is less than or equal to zero, or computing either x + w or y + h results in integer overflow
Create a Raster with the same size, SampleModel and DataBuffer as this one, but with a different location. The new Raster will possess a reference to the current Raster, accessible through its getParent() method.
childMinX - the X coordinate of the upper-left corner of the new Raster
childMinY - the Y coordinate of the upper-left corner of the new Raster
Raster with the same size, SampleModel, and DataBuffer as this Raster, but with the specified location.
RasterFormatException - if computing either childMinX + this.getWidth() or childMinY + this.getHeight() results in integer overflow
Returns a new Raster which shares all or part of this Raster's DataBuffer. The new Raster will possess a reference to the current Raster, accessible through its getParent() method.
The parentX, parentY, width and height parameters form a Rectangle in this Raster's coordinate space, indicating the area of pixels to be shared. An error will be thrown if this Rectangle is not contained with the bounds of the current Raster.
The new Raster may additionally be translated to a different coordinate system for the plane than that used by the current Raster. The childMinX and childMinY parameters give the new (x, y) coordinate of the upper-left pixel of the returned Raster; the coordinate (childMinX, childMinY) in the new Raster will map to the same pixel as the coordinate (parentX, parentY) in the current Raster.
The new Raster may be defined to contain only a subset of the bands of the current Raster, possibly reordered, by means of the bandList parameter. If bandList is null, it is taken to include all of the bands of the current Raster in their current order.
To create a new Raster that contains a subregion of the current Raster, but shares its coordinate system and bands, this method should be called with childMinX equal to parentX, childMinY equal to parentY, and bandList equal to null.
parentX - The X coordinate of the upper-left corner in this Raster's coordinates
parentY - The Y coordinate of the upper-left corner in this Raster's coordinates
width - Width of the region starting at (parentX, parentY)
height - Height of the region starting at (parentX, parentY).
childMinX - The X coordinate of the upper-left corner of the returned Raster
childMinY - The Y coordinate of the upper-left corner of the returned Raster
bandList - Array of band indices, or null to use all bands
Raster.
RasterFormatException - if the specified subregion is outside of the raster bounds.
RasterFormatException - if width or height is less than or equal to zero, or computing any of parentX + width, parentY + height, childMinX + width, or childMinY + height results in integer overflow
Returns the bounding Rectangle of this Raster. This function returns the same information as getMinX/MinY/Width/Height.
Raster.
public final int getMinX()
Returns the minimum valid X coordinate of the Raster.
Raster.
public final int getMinY()
Returns the minimum valid Y coordinate of the Raster.
Raster.
public final int getWidth()
Returns the width in pixels of the Raster.
Raster.
public final int getHeight()
Returns the height in pixels of the Raster.
Raster.
public final int getNumBands()
Returns the number of bands (samples per pixel) in this Raster.
Raster.
public final int getNumDataElements()
Returns the number of data elements needed to transfer one pixel via the getDataElements and setDataElements methods. When pixels are transferred via these methods, they may be transferred in a packed or unpacked format, depending on the implementation of the underlying SampleModel. Using these methods, pixels are transferred as an array of getNumDataElements() elements of a primitive type given by getTransferType(). The TransferType may or may not be the same as the storage data type of the DataBuffer.
public final int getTransferType()
Returns the TransferType used to transfer pixels via the getDataElements and setDataElements methods. When pixels are transferred via these methods, they may be transferred in a packed or unpacked format, depending on the implementation of the underlying SampleModel. Using these methods, pixels are transferred as an array of getNumDataElements() elements of a primitive type given by getTransferType(). The TransferType may or may not be the same as the storage data type of the DataBuffer. The TransferType will be one of the types defined in DataBuffer.
Returns the DataBuffer associated with this Raster.
DataBuffer of this Raster.
Returns the SampleModel that describes the layout of the image data.
SampleModel of this Raster.
Returns data for a single pixel in a primitive array of type TransferType. For image data supported by the Java 2D(tm) API, this will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT, or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format, thus increasing efficiency for data transfers. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed. A ClassCastException will be thrown if the input object is non null and references anything other than an array of TransferType.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
outData - An object reference to an array of type defined by getTransferType() and length getNumDataElements(). If null, an array of appropriate type and size will be allocated
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if outData is too small to hold the output.
Returns the pixel data for the specified rectangle of pixels in a primitive array of type TransferType. For image data supported by the Java 2D API, this will be one of DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, DataBuffer.TYPE_INT, DataBuffer.TYPE_SHORT, DataBuffer.TYPE_FLOAT, or DataBuffer.TYPE_DOUBLE. Data may be returned in a packed format, thus increasing efficiency for data transfers. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed. A ClassCastException will be thrown if the input object is non null and references anything other than an array of TransferType.
x - The X coordinate of the upper-left pixel location
y - The Y coordinate of the upper-left pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
outData - An object reference to an array of type defined by getTransferType() and length w*h*getNumDataElements(). If null, an array of appropriate type and size will be allocated.
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if outData is too small to hold the output.
public int[] getPixel(int x, int y, int[] iArray)
Returns the samples in an array of int for the specified pixel. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
iArray - An optionally preallocated int array
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if iArray is too small to hold the output.
public float[] getPixel(int x, int y, float[] fArray)
Returns the samples in an array of float for the specified pixel. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
fArray - An optionally preallocated float array
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if fArray is too small to hold the output.
public double[] getPixel(int x, int y, double[] dArray)
Returns the samples in an array of double for the specified pixel. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
dArray - An optionally preallocated double array
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if dArray is too small to hold the output.
public int[] getPixels(int x, int y, int w, int h, int[] iArray)
Returns an int array containing all samples for a rectangle of pixels, one sample per array element. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the upper-left pixel location
y - The Y coordinate of the upper-left pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
iArray - An optionally pre-allocated int array
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if iArray is too small to hold the output.
public float[] getPixels(int x, int y, int w, int h, float[] fArray)
Returns a float array containing all samples for a rectangle of pixels, one sample per array element. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
fArray - An optionally pre-allocated float array
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if fArray is too small to hold the output.
public double[] getPixels(int x, int y, int w, int h, double[] dArray)
Returns a double array containing all samples for a rectangle of pixels, one sample per array element. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the upper-left pixel location
y - The Y coordinate of the upper-left pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
dArray - An optionally pre-allocated double array
ArrayIndexOutOfBoundsException - if the coordinates are not in bounds, or if dArray is too small to hold the output.
public int getSample(int x, int y, int b)
Returns the sample in a specified band for the pixel located at (x,y) as an int. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
b - The band to return
ArrayIndexOutOfBoundsException - if the coordinates or the band index are not in bounds.
public float getSampleFloat(int x, int y, int b)
Returns the sample in a specified band for the pixel located at (x,y) as a float. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
b - The band to return
ArrayIndexOutOfBoundsException - if the coordinates or the band index are not in bounds.
public double getSampleDouble(int x, int y, int b)
Returns the sample in a specified band for a pixel located at (x,y) as a double. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the pixel location
y - The Y coordinate of the pixel location
b - The band to return
ArrayIndexOutOfBoundsException - if the coordinates or the band index are not in bounds.
public int[] getSamples(int x, int y, int w, int h, int b, int[] iArray)
Returns the samples for a specified band for the specified rectangle of pixels in an int array, one sample per array element. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the upper-left pixel location
y - The Y coordinate of the upper-left pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
b - The band to return
iArray - An optionally pre-allocated int array
ArrayIndexOutOfBoundsException - if the coordinates or the band index are not in bounds, or if iArray is too small to hold the output.
public float[] getSamples(int x, int y, int w, int h, int b, float[] fArray)
Returns the samples for a specified band for the specified rectangle of pixels in a float array, one sample per array element. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the upper-left pixel location
y - The Y coordinate of the upper-left pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
b - The band to return
fArray - An optionally pre-allocated float array
ArrayIndexOutOfBoundsException - if the coordinates or the band index are not in bounds, or if fArray is too small to hold the output.
public double[] getSamples(int x, int y, int w, int h, int b, double[] dArray)
Returns the samples for a specified band for a specified rectangle of pixels in a double array, one sample per array element. An ArrayIndexOutOfBoundsException may be thrown if the coordinates are not in bounds. However, explicit bounds checking is not guaranteed.
x - The X coordinate of the upper-left pixel location
y - The Y coordinate of the upper-left pixel location
w - Width of the pixel rectangle
h - Height of the pixel rectangle
b - The band to return
dArray - An optionally pre-allocated double array
ArrayIndexOutOfBoundsException - if the coordinates or the band index are not in bounds, or if dArray is too small to hold the output.
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