ShortLookupTable (Java 2 Platform SE v1.4.1_"07")

Overview | Package | Class | Use | Tree | Deprecated | Index | Help

JavaTM 2 Platform
Std. Ed. v1.4.1_"07"

PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

## java.awt.image
Class ShortLookupTable

    java.lang.Object
      |
      +--java.awt.image.LookupTable
            |
            +--java.awt.image.ShortLookupTable

public class ShortLookupTable
extends LookupTable

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.

See Also:
  `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.
`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

### ShortLookupTable

    public ShortLookupTable(int offset,
                            short[][] data)

  Constructs a ShortLookupTable object from an array of short arrays representing a lookup table for each band. The offset will be subtracted from the input values before indexing into the arrays. The number of bands is the length of the data argument. The data array for each band is stored as a reference.

Parameters:
  `offset` - the value subtracted from the input values before indexing into the arrays
  `data` - an array of short arrays representing a lookup table for each band

### ShortLookupTable

    public ShortLookupTable(int offset,
                            short[] data)

  Constructs a ShortLookupTable object from an array of shorts representing a lookup table for each band. The offset will be subtracted from the input values before indexing into the array. The data array is stored as a reference.

Parameters:
  `offset` - the value subtracted from the input values before indexing into the arrays
  `data` - an array of shorts

Method Detail

### getTable

    public final short[][] getTable()

  Returns the lookup table data by reference. If this ShortLookupTable was constructed using a single short array, the length of the returned array is one.

  Returns:
    ShortLookupTable data array.

### lookupPixel

    public int[] lookupPixel(int[] src,
                             int[] dst)

  Returns an array of samples of a pixel, translated with the lookup table. The source and destination array can be the same array. Array `dst` is returned.

  Specified by:
    `lookupPixel` in class `LookupTable`
  Parameters:
    `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`.
  Returns:
    the array `dst`, an `int` array of samples.
  Throws:
    `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.

### lookupPixel

    public short[] lookupPixel(short[] src,
                               short[] dst)

  Returns an array of samples of a pixel, translated with the lookup table. The source and destination array can be the same array. Array `dst` is returned.

  Parameters:
    `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`.
  Returns:
    the array `dst`, an `int` array of samples.
  Throws:
    `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.

Overview | Package | Class | Use | Tree | Deprecated | Index | Help

JavaTM 2 Platform
Std. Ed. v1.4.1_"07"

PREV CLASS NEXT CLASS | FRAMES NO FRAMES
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD

Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.