org.deegree.coverage.raster.data
Class DataView

java.lang.Object
  org.deegree.coverage.raster.geom.RasterRect
      org.deegree.coverage.raster.data.DataView

public class DataView
extends RasterRect

The DataView class defines a view on Rasterdata.

Version:

$Revision: 23532 $, $Date: 2010-04-12 12:24:13 +0200 (Mo, 12. Apr 2010) $

Author:

Rutger Bezema, last edited by: $Author: rbezema $

Field Summary

RasterDataInfo

dataInfo the view info on the raster data

Fields inherited from class org.deegree.coverage.raster.geom.RasterRect

height, width, x, y

Constructor Summary

DataView(int xOffset, int yOffset, int width, int height, RasterDataInfo viewOnData)
Constructor if the info on the view on the data equals the original raster data info.

DataView(int xOffset, int yOffset, int width, int height, RasterDataInfo viewOnData, RasterDataInfo originalInfo)

DataView(RasterRect rasterRect, RasterDataInfo viewOnData)
Constructor if the info on the view on the data equals the original raster data info.

DataView(RasterRect rasterRect, RasterDataInfo viewOnData, RasterDataInfo originalInfo)

Method Summary

boolean	equals(java.lang.Object other)
int	getBandOffset(int requestedBand) Returns the band number of the original data for a requested band in this view on the data.
int	hashCode() Implementation as proposed by Joshua Block in Effective Java (Addison-Wesley 2001), which supplies an even distribution and is relatively fast.

Methods inherited from class org.deegree.coverage.raster.geom.RasterRect

intersection, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

dataInfo

public final RasterDataInfo dataInfo

the view info on the raster data

Constructor Detail

DataView

public DataView(int xOffset,
                int yOffset,
                int width,
                int height,
                RasterDataInfo viewOnData)

Constructor if the info on the view on the data equals the original raster data info.

Parameters:

xOffset - offset in the original raster data x-axis

yOffset - offset in the original raster data y-axis

width - the width of the new view on the original data

height - the height of the view on the original data

viewOnData - information on the view of this data.

DataView

public DataView(RasterRect rasterRect,
                RasterDataInfo viewOnData)

Constructor if the info on the view on the data equals the original raster data info.

Parameters:

rasterRect - to get the views parameters from.

viewOnData - information on the view of this data.

DataView

public DataView(RasterRect rasterRect,
                RasterDataInfo viewOnData,
                RasterDataInfo originalInfo)

Parameters:

rasterRect - to get the views parameters from.

viewOnData - information on the view of this data.

originalInfo - used to calculate the band offsets for this view.

DataView

public DataView(int xOffset,
                int yOffset,
                int width,
                int height,
                RasterDataInfo viewOnData,
                RasterDataInfo originalInfo)

Parameters:

xOffset - offset in the original raster data x-axis

yOffset - offset in the original raster data y-axis

width - the width of the new view on the original data

height - the height of the view on the original data

viewOnData - information on the view of this data.

originalInfo - used to calculate the band offsets for this view.

Method Detail

getBandOffset

public int getBandOffset(int requestedBand)

Returns the band number of the original data for a requested band in this view on the data.

Parameters:

requestedBand - of the view

Returns:

the band number in the original data.

equals

public boolean equals(java.lang.Object other)

Overrides:

equals in class RasterRect

hashCode

public int hashCode()

Implementation as proposed by Joshua Block in Effective Java (Addison-Wesley 2001), which supplies an even distribution and is relatively fast. It is created from field f as follows:

• boolean -- code = (f ? 0 : 1)
• byte, char, short, int -- code = (int)f
• long -- code = (int)(f ^ (f >>>32))
• float -- code = Float.floatToIntBits(f);
• double -- long l = Double.doubleToLongBits(f); code = (int)(l ^ (l >>> 32))
• all Objects, (where equals( ) calls equals( ) for this field) -- code = f.hashCode( )
• Array -- Apply above rules to each element

Combining the hash code(s) computed above: result = 37 * result + code;

Overrides:

hashCode in class RasterRect

Returns:

(int) ( result >>> 32 ) ^ (int) result;

See Also:

Object.hashCode()