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JavaTM 2 Platform Std. Ed. v1.4.2 |
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java.lang.Objectjava.awt.image.LookupTable
java.awt.image.ShortLookupTable
This class defines a lookup table object. The output of a lookup operation using an object of this class is interpreted as an unsigned short quantity. The lookup table contains short data arrays for one or more bands (or components) of an image, and it contains an offset which will be subtracted from the input values before indexing the arrays. This allows an array smaller than the native data size to be provided for a constrained input. If there is only one array in the lookup table, it will be applied to all bands.
ByteLookupTable
,
LookupOp
Constructor Summary | |
ShortLookupTable(int offset,
short[] data)
Constructs a ShortLookupTable object from an array of shorts representing a lookup table for each band. |
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ShortLookupTable(int offset,
short[][] data)
Constructs a ShortLookupTable object from an array of short arrays representing a lookup table for each band. |
Method Summary | |
short[][] |
getTable()
Returns the lookup table data by reference. |
int[] |
lookupPixel(int[] src,
int[] dst)
Returns an array of samples of a pixel, translated with the lookup table. |
short[] |
lookupPixel(short[] src,
short[] dst)
Returns an array of samples of a pixel, translated with the lookup table. |
Methods inherited from class java.awt.image.LookupTable |
getNumComponents, getOffset |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public ShortLookupTable(int offset, short[][] data)
offset
- the value subtracted from the input values
before indexing into the arraysdata
- an array of short arrays representing a lookup
table for each bandpublic ShortLookupTable(int offset, short[] data)
offset
- the value subtracted from the input values
before indexing into the arraysdata
- an array of shortsMethod Detail |
public final short[][] getTable()
public int[] lookupPixel(int[] src, int[] dst)
dst
is returned.
lookupPixel
in class LookupTable
src
- the source array.dst
- the destination array. This array must be at least as
long as src
. If dst
is
null
, a new array will be allocated having the
same length as src
.
dst
, an int
array of
samples.
ArrayIndexOutOfBoundsException
- if src
is
longer than dst
or if for any element
i
of src
,
(src[i]&0xffff)-offset
is either less than
zero or greater than or equal to the length of the
lookup table for any band.public short[] lookupPixel(short[] src, short[] dst)
dst
is returned.
src
- the source array.dst
- the destination array. This array must be at least as
long as src
. If dst
is
null
, a new array will be allocated having the
same length as src
.
dst
, an int
array of
samples.
ArrayIndexOutOfBoundsException
- if src
is
longer than dst
or if for any element
i
of src
,
(src[i]&0xffff)-offset
is either less than
zero or greater than or equal to the length of the
lookup table for any band.
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JavaTM 2 Platform Std. Ed. v1.4.2 |
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