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DataBufferFloat (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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Standard Ed. 5.0
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java.awt.image
Class DataBufferFloat

java.lang.Object
  extended by java.awt.image.DataBuffer
      extended by java.awt.image.DataBufferFloat

public final class DataBufferFloat
extends DataBuffer

This class extends DataBuffer and stores data internally in float form.

Since:
1.4
See Also:
DataBuffer

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
DataBufferFloat(float[][] dataArray, int size)
          Constructs a float-based DataBuffer with the specified data arrays.
DataBufferFloat(float[][] dataArray, int size, int[] offsets)
          Constructs a float-based DataBuffer with the specified data arrays, size, and per-bank offsets.
DataBufferFloat(float[] dataArray, int size)
          Constructs a float-based DataBuffer with the specified data array.
DataBufferFloat(float[] dataArray, int size, int offset)
          Constructs a float-based DataBuffer with the specified data array.
DataBufferFloat(int size)
          Constructs a float-based DataBuffer with a specified size.
DataBufferFloat(int size, int numBanks)
          Constructs a float-based DataBuffer with a specified number of banks, all of which are of a specified size.
 
Method Summary
 float[][] getBankData()
          Returns the data array for all banks.
 float[] getData()
          Returns the default (first) float data array.
 float[] 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.
 
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

DataBufferFloat

public DataBufferFloat(int size)
Constructs a float-based DataBuffer with a specified size.

Parameters:
size - The number of elements in the DataBuffer.

DataBufferFloat

public DataBufferFloat(int size,
                       int numBanks)
Constructs a float-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.

DataBufferFloat

public DataBufferFloat(float[] dataArray,
                       int size)
Constructs a float-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.

Parameters:
dataArray - An array of floats to be used as the first and only bank of this DataBuffer.
size - The number of elements of the array to be used.

DataBufferFloat

public DataBufferFloat(float[] dataArray,
                       int size,
                       int offset)
Constructs a float-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.

Parameters:
dataArray - An array of floats 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.

DataBufferFloat

public DataBufferFloat(float[][] dataArray,
                       int size)
Constructs a float-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.

Parameters:
dataArray - An array of arrays of floats to be used as the banks of this DataBuffer.
size - The number of elements of each array to be used.

DataBufferFloat

public DataBufferFloat(float[][] dataArray,
                       int size,
                       int[] offsets)
Constructs a float-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.

Parameters:
dataArray - An array of arrays of floats 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 float[] getData()
Returns the default (first) float data array.

Returns:
the first float data array.

getData

public float[] getData(int bank)
Returns the data array for the specified bank.

Parameters:
bank - the data array
Returns:
the data array specified by bank.

getBankData

public float[][] getBankData()
Returns the data array for all banks.

Returns:
all data arrays for 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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JavaTM 2 Platform
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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.

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