edu.unh.sdb.datasource
Class TransferFunction

java.lang.Object
  edu.unh.sdb.datasource.TransferFunction

public abstract class TransferFunction
extends java.lang.Object

Author:

dlipsa Converts a datum read from a RGB data source into rgba array of 4 bytes ready to be stored into a texture. Converts a datum read from a CT data source (which contains ints in the range 0-4096) into a rgba array of 4 bytes. First it scales the CT value to a value in the range 0-255 and then duplicates that value for all components.

Nested Class Summary

static class	TransferFunction.Block Block of data that is read for a datasource.
static class	TransferFunction.Feature
static class	TransferFunction.Type

Constructor Summary

TransferFunction()

Method Summary

abstract void	classifyVoxel(DataBlock src, IndexSpaceID srcId, DataBlock dest, IndexSpaceID destId, TransferFunction.Feature feature)
void	classifyVoxels(DataBlock src, ISBounds srcBounds, DataBlock dest, TransferFunction.Feature feature)
abstract void	convert(Datum datum, byte[] texture, int index)
abstract void	convert(Values values, byte[] texture)
abstract Datum	createDatum()
static TransferFunction	createDefault(DataSource dataSource)
abstract TransferFunction.Type	getType()
protected static javax.vecmath.Vector3d	gradient(DataBlock block, IndexSpaceID id, int attr)
abstract boolean	isFirstBigger(byte[] t1, int i1, byte[] t2, int i2)
abstract void	shadeVoxel(DataBlock src, IndexSpaceID srcId, DataBlock dest, IndexSpaceID destId, javax.vecmath.Vector3d L, javax.vecmath.Vector3d H, double distFromPicturePlane)
protected static double	shadeVoxel(DataBlock src, IndexSpaceID srcId, int attr, javax.vecmath.Vector3d L, javax.vecmath.Vector3d H, double d)
void	shadeVoxels(DataBlock src, ISBounds srcBounds, DataBlock dest, javax.vecmath.Vector3d L, javax.vecmath.Vector3d H, double distFromPicturePlane)
abstract void	trilinearInterpolation(TransferFunction.Block block, Datum datum, IndexSpaceID lower)
static double	trilinearInterpolation(TransferFunction.Block block, IndexSpaceID lower, int attr)

Methods inherited from class java.lang.Object

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

Constructor Detail

TransferFunction

public TransferFunction()

Method Detail

convert

public abstract void convert(Datum datum,
                             byte[] texture,
                             int index)

convert

public abstract void convert(Values values,
                             byte[] texture)

isFirstBigger

public abstract boolean isFirstBigger(byte[] t1,
                                      int i1,
                                      byte[] t2,
                                      int i2)

createDatum

public abstract Datum createDatum()

trilinearInterpolation

public abstract void trilinearInterpolation(TransferFunction.Block block,
                                            Datum datum,
                                            IndexSpaceID lower)

getType

public abstract TransferFunction.Type getType()

classifyVoxel

public abstract void classifyVoxel(DataBlock src,
                                   IndexSpaceID srcId,
                                   DataBlock dest,
                                   IndexSpaceID destId,
                                   TransferFunction.Feature feature)

shadeVoxel

public abstract void shadeVoxel(DataBlock src,
                                IndexSpaceID srcId,
                                DataBlock dest,
                                IndexSpaceID destId,
                                javax.vecmath.Vector3d L,
                                javax.vecmath.Vector3d H,
                                double distFromPicturePlane)

shadeVoxels

public void shadeVoxels(DataBlock src,
                        ISBounds srcBounds,
                        DataBlock dest,
                        javax.vecmath.Vector3d L,
                        javax.vecmath.Vector3d H,
                        double distFromPicturePlane)

classifyVoxels

public void classifyVoxels(DataBlock src,
                           ISBounds srcBounds,
                           DataBlock dest,
                           TransferFunction.Feature feature)

createDefault

public static TransferFunction createDefault(DataSource dataSource)

trilinearInterpolation

public static double trilinearInterpolation(TransferFunction.Block block,
                                            IndexSpaceID lower,
                                            int attr)

shadeVoxel

protected static double shadeVoxel(DataBlock src,
                                   IndexSpaceID srcId,
                                   int attr,
                                   javax.vecmath.Vector3d L,
                                   javax.vecmath.Vector3d H,
                                   double d)

gradient

protected static javax.vecmath.Vector3d gradient(DataBlock block,
                                                 IndexSpaceID id,
                                                 int attr)