java.lang.Object
- java.awt.image.DataBuffer
- - java.awt.image.DataBufferDouble

```
public final class DataBufferDouble
extends DataBuffer
```
This class extends DataBuffer and stores data internally in double form.
Note that some implementations may function more efficiently if they can maintain control over how the data for an image is stored. For example, optimizations such as caching an image in video memory require that the implementation track all modifications to that data. Other implementations may operate better if they can store the data in locations other than a Java array. To maintain optimum compatibility with various optimizations it is best to avoid constructors and methods which expose the underlying storage as a Java array as noted below in the documentation for those methods.

Since:

1.4

Field Summary
- Fields inherited from class java.awt.image.DataBuffer
  banks, dataType, offset, offsets, size, TYPE_BYTE, TYPE_DOUBLE, TYPE_FLOAT, TYPE_INT, TYPE_SHORT, TYPE_UNDEFINED, TYPE_USHORT

Constructor Summary

Constructors
Constructor and Description
`DataBufferDouble(double[][] dataArray, int size)` Constructs a `double`-based `DataBuffer` with the specified data arrays.
`DataBufferDouble(double[][] dataArray, int size, int[] offsets)` Constructs a `double`-based `DataBuffer` with the specified data arrays, size, and per-bank offsets.
`DataBufferDouble(double[] dataArray, int size)` Constructs a `double`-based `DataBuffer` with the specified data array.
`DataBufferDouble(double[] dataArray, int size, int offset)` Constructs a `double`-based `DataBuffer` with the specified data array.
`DataBufferDouble(int size)` Constructs a `double`-based `DataBuffer` with a specified size.
`DataBufferDouble(int size, int numBanks)` Constructs a `double`-based `DataBuffer` with a specified number of banks, all of which are of a specified size.

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Method Summary

Methods
Modifier and Type	Method and Description
`double[][]`	`getBankData()` Returns the data array for all banks.
`double[]`	`getData()` Returns the default (first) `double` data array.
`double[]`	`getData(int bank)` Returns the data array for the specified bank.
`int`	`getElem(int i)` Returns the requested data array element from the first (default) bank as an `int`.
`int`	`getElem(int bank, int i)` Returns the requested data array element from the specified bank as an `int`.
`double`	`getElemDouble(int i)` Returns the requested data array element from the first (default) bank as a `double`.
`double`	`getElemDouble(int bank, int i)` Returns the requested data array element from the specified bank as a `double`.
`float`	`getElemFloat(int i)` Returns the requested data array element from the first (default) bank as a `float`.
`float`	`getElemFloat(int bank, int i)` Returns the requested data array element from the specified bank as a `float`.
`void`	`setElem(int i, int val)` Sets the requested data array element in the first (default) bank to the given `int`.
`void`	`setElem(int bank, int i, int val)` Sets the requested data array element in the specified bank to the given `int`.
`void`	`setElemDouble(int i, double val)` Sets the requested data array element in the first (default) bank to the given `double`.
`void`	`setElemDouble(int bank, int i, double val)` Sets the requested data array element in the specified bank to the given `double`.
`void`	`setElemFloat(int i, float val)` Sets the requested data array element in the first (default) bank to the given `float`.
`void`	`setElemFloat(int bank, int i, float val)` Sets the requested data array element in the specified bank to the given `float`.

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Methods inherited from class java.awt.image.DataBuffer
getDataType, getDataTypeSize, getNumBanks, getOffset, getOffsets, getSize

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DataBufferDouble
```
public DataBufferDouble(int size)
```
    Constructs a double-based DataBuffer with a specified size.
    
    Parameters:
    size - The number of elements in the DataBuffer.
  - DataBufferDouble
```
public DataBufferDouble(int size,
                int numBanks)
```
    Constructs a double-based DataBuffer with a specified number of banks, all of which are of a specified size.
    
    Parameters:
    size - The number of elements in each bank of the DataBuffer.
    numBanks - The number of banks in the DataBuffer.
  - DataBufferDouble
```
public DataBufferDouble(double[] dataArray,
                int size)
```
    Constructs a double-based DataBuffer with the specified data array. Only the first size elements are available for use by this DataBuffer. The array must be large enough to hold size elements.
    Note that DataBuffer objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Parameters:
    dataArray - An array of doubles to be used as the first and only bank of this DataBuffer.
    size - The number of elements of the array to be used.
  - DataBufferDouble
```
public DataBufferDouble(double[] dataArray,
                int size,
                int offset)
```
    Constructs a double-based DataBuffer with the specified data array. Only the elements between offset and offset + size - 1 are available for use by this DataBuffer. The array must be large enough to hold offset + size elements.
    Note that DataBuffer objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Parameters:
    dataArray - An array of doubles to be used as the first and only bank of this DataBuffer.
    size - The number of elements of the array to be used.
    offset - The offset of the first element of the array that will be used.
  - DataBufferDouble
```
public DataBufferDouble(double[][] dataArray,
                int size)
```
    Constructs a double-based DataBuffer with the specified data arrays. Only the first size elements of each array are available for use by this DataBuffer. The number of banks will be equal to dataArray.length.
    Note that DataBuffer objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Parameters:
    dataArray - An array of arrays of doubles to be used as the banks of this DataBuffer.
    size - The number of elements of each array to be used.
  - DataBufferDouble
```
public DataBufferDouble(double[][] dataArray,
                int size,
                int[] offsets)
```
    Constructs a double-based DataBuffer with the specified data arrays, size, and per-bank offsets. The number of banks is equal to dataArray.length. Each array must be at least as large as size plus the corresponding offset. There must be an entry in the offsets array for each data array.
    Note that DataBuffer objects created by this constructor may be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Parameters:
    dataArray - An array of arrays of doubles to be used as the banks of this DataBuffer.
    size - The number of elements of each array to be used.
    offsets - An array of integer offsets, one for each bank.
- Method Detail
  - getData
```
public double[] getData()
```
    Returns the default (first) double data array.
    Note that calling this method may cause this DataBuffer object to be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Returns:
    the first double data array.
  - getData
```
public double[] getData(int bank)
```
    Returns the data array for the specified bank.
    Note that calling this method may cause this DataBuffer object to be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Parameters:
    bank - the data array
    
    Returns:
    the data array specified by bank.
  - getBankData
```
public double[][] getBankData()
```
    Returns the data array for all banks.
    Note that calling this method may cause this DataBuffer object to be incompatible with performance optimizations used by some implementations (such as caching an associated image in video memory).
    
    Returns:
    all data arrays from this data buffer.
  - getElem
```
public int getElem(int i)
```
    Returns the requested data array element from the first (default) bank as an int.
    
    Overrides:
    
    getElem in class DataBuffer
    
    Parameters:
    i - The desired data array element.
    
    Returns:
    The data entry as an int.
    See Also:
    setElem(int, int), setElem(int, int, int)
  - getElem
```
public int getElem(int bank,
          int i)
```
    Returns the requested data array element from the specified bank as an int.
    
    Specified by:
    
    getElem in class DataBuffer
    
    Parameters:
    bank - The bank number.
    i - The desired data array element.
    
    Returns:
    The data entry as an int.
    See Also:
    setElem(int, int), setElem(int, int, int)
  - setElem
```
public void setElem(int i,
           int val)
```
    Sets the requested data array element in the first (default) bank to the given int.
    
    Overrides:
    
    setElem in class DataBuffer
    
    Parameters:
    i - The desired data array element.
    val - The value to be set.
    See Also:
    getElem(int), getElem(int, int)
  - setElem
```
public void setElem(int bank,
           int i,
           int val)
```
    Sets the requested data array element in the specified bank to the given int.
    
    Specified by:
    
    setElem in class DataBuffer
    
    Parameters:
    bank - The bank number.
    i - The desired data array element.
    val - The value to be set.
    See Also:
    getElem(int), getElem(int, int)
  - getElemFloat
```
public float getElemFloat(int i)
```
    Returns the requested data array element from the first (default) bank as a float.
    
    Overrides:
    
    getElemFloat in class DataBuffer
    
    Parameters:
    i - The desired data array element.
    
    Returns:
    The data entry as a float.
    See Also:
    setElemFloat(int, float), setElemFloat(int, int, float)
  - getElemFloat
```
public float getElemFloat(int bank,
                 int i)
```
    Returns the requested data array element from the specified bank as a float.
    
    Overrides:
    
    getElemFloat in class DataBuffer
    
    Parameters:
    bank - The bank number.
    i - The desired data array element.
    
    Returns:
    The data entry as a float.
    See Also:
    setElemFloat(int, float), setElemFloat(int, int, float)
  - setElemFloat
```
public void setElemFloat(int i,
                float val)
```
    Sets the requested data array element in the first (default) bank to the given float.
    
    Overrides:
    
    setElemFloat in class DataBuffer
    
    Parameters:
    i - The desired data array element.
    val - The value to be set.
    See Also:
    getElemFloat(int), getElemFloat(int, int)
  - setElemFloat
```
public void setElemFloat(int bank,
                int i,
                float val)
```
    Sets the requested data array element in the specified bank to the given float.
    
    Overrides:
    
    setElemFloat in class DataBuffer
    
    Parameters:
    bank - The bank number.
    i - The desired data array element.
    val - The value to be set.
    See Also:
    getElemFloat(int), getElemFloat(int, int)
  - getElemDouble
```
public double getElemDouble(int i)
```
    Returns the requested data array element from the first (default) bank as a double.
    
    Overrides:
    
    getElemDouble in class DataBuffer
    
    Parameters:
    i - The desired data array element.
    
    Returns:
    The data entry as a double.
    See Also:
    setElemDouble(int, double), setElemDouble(int, int, double)
  - getElemDouble
```
public double getElemDouble(int bank,
                   int i)
```
    Returns the requested data array element from the specified bank as a double.
    
    Overrides:
    
    getElemDouble in class DataBuffer
    
    Parameters:
    bank - The bank number.
    i - The desired data array element.
    
    Returns:
    The data entry as a double.
    See Also:
    setElemDouble(int, double), setElemDouble(int, int, double)
  - setElemDouble
```
public void setElemDouble(int i,
                 double val)
```
    Sets the requested data array element in the first (default) bank to the given double.
    
    Overrides:
    
    setElemDouble in class DataBuffer
    
    Parameters:
    i - The desired data array element.
    val - The value to be set.
    See Also:
    getElemDouble(int), getElemDouble(int, int)
  - setElemDouble
```
public void setElemDouble(int bank,
                 int i,
                 double val)
```
    Sets the requested data array element in the specified bank to the given double.
    
    Overrides:
    
    setElemDouble in class DataBuffer
    
    Parameters:
    bank - The bank number.
    i - The desired data array element.
    val - The value to be set.
    See Also:
    getElemDouble(int), getElemDouble(int, int)

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-java/awt/image/databufferdouble.html

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Referenzen

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Inhaltsverzeichnis Haut

Class DataBufferDouble

Field Summary

Fields inherited from class java.awt.image.DataBuffer

Constructor Summary

Method Summary

Methods inherited from class java.awt.image.DataBuffer

Methods inherited from class java.lang.Object

Constructor Detail

DataBufferDouble

DataBufferDouble

DataBufferDouble

DataBufferDouble

DataBufferDouble

DataBufferDouble

Method Detail

getData

getData

getBankData

getElem

getElem

setElem

setElem

getElemFloat

getElemFloat

setElemFloat

setElemFloat

getElemDouble

getElemDouble

setElemDouble

setElemDouble

Referenzen