edu.unh.sdb.datasource
Class SliceIterator

java.lang.Object
  edu.unh.sdb.datasource.Slice
      edu.unh.sdb.datasource.SliceIterator

All Implemented Interfaces:

SDBIterator, ObliquePlaneIteratorInterface

public class SliceIterator
extends Slice
implements ObliquePlaneIteratorInterface

It allows to 'iterate' a Slice along is normal vector, calculating the intersection with a Volume and reading data from a DataSource to fill that intersection.

Author:

dlipsa

Constructor Summary

SliceIterator(byte[] outsideColor, byte[] insideColor, Volume volume, Plane plane, DataSource dataSource)

Method Summary

void	end() Advance the iterator to the last valid value in the iteration.
void	init() Initialize the slice by allocating memory for the data to be read, seting the default transfer function and performing other initialisations This initialisation can be done once per iteration.
boolean	next() Advance the iterator by one step.
void	setSPCacheBlocks(boolean spBlockShape) Indicate to this iterator whether the underlying cache has blocks shaped according to the plane normal.
boolean	valid() Return true if the iterator currently has a valid value, false otherwise.

Methods inherited from class edu.unh.sdb.datasource.Slice

getBounds, getBytesPerTexel, getDataSource, getIntersection2d, getIntersection3d, getMaxProjectionAxis, getNormalArray, getPlane, getPlaneShapeArray, getSpaceBounds, getSpaceShapeArray, getTextureCoordinates, getTextureData, getTextureDimensions, getVolume, log, projectTuple, read, setDataSource, setGoodScanConversionOrder, setInsideColor, setOutsideColor, setPlane, setTransferFunction, setVertical, setVolume, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface edu.unh.sdb.datasource.ObliquePlaneIteratorInterface

getDataSource, getNormalArray, getPlaneShapeArray, getSpaceBounds, getSpaceShapeArray, setDataSource

Constructor Detail

SliceIterator

public SliceIterator(byte[] outsideColor,
                     byte[] insideColor,
                     Volume volume,
                     Plane plane,
                     DataSource dataSource)

Method Detail

init

public void init()

Description copied from class: Slice

Initialize the slice by allocating memory for the data to be read, seting the default transfer function and performing other initialisations This initialisation can be done once per iteration. In an iteration the slice will slide along its normal until the entire volume will be traversed.

Specified by:

init in interface SDBIterator

Overrides:

init in class Slice

next

public boolean next()

Description copied from interface: SDBIterator

Advance the iterator by one step. If the iterator cannot be advanced to produce a valid value, the value of the iterator is undefined, but the next() method will return false, as will a subsequent call to valid().

Specified by:

next in interface SDBIterator

valid

public boolean valid()

Description copied from interface: SDBIterator

Return true if the iterator currently has a valid value, false otherwise.

Specified by:

valid in interface SDBIterator

end

public void end()

Description copied from interface: SDBIterator

Advance the iterator to the last valid value in the iteration. (optional operation)

Specified by:

end in interface SDBIterator

setSPCacheBlocks

public void setSPCacheBlocks(boolean spBlockShape)

Description copied from interface: ObliquePlaneIteratorInterface

Indicate to this iterator whether the underlying cache has blocks shaped according to the plane normal.

Specified by:

setSPCacheBlocks in interface ObliquePlaneIteratorInterface