VolumeJ
Class VJVoxelLoc

java.lang.Object
  |
  +--VolumeJ.VJVoxelLoc

public class VJVoxelLoc

extends java.lang.Object

This class defines a voxel location for interpolation and rendering. It is useful because it keeps both the integer part of the voxel location (nearest neighbor voxel), and the weights to each of the eight surrounding voxels that can be used for higher order interpolation. Voxel locations are always in object space. Copyright (c) 1999-2002, Michael Abramoff. All rights reserved.

Field Summary

float	blb
float	blf
float	brb
float	brf
float	dx Difference between ix/iy/iz and x/y/z [0-1].
float	dy
float	dz
boolean	hasWeights
int	ix integer floor of voxel location.
int	iy
int	iz
float	tlb
float	tlf trilinear interpolation weights.
float	trb
float	trf
float	x
float	y
float	z

Constructor Summary

VJVoxelLoc()
Empty VJVoxelLoc creator.

VJVoxelLoc(float[] v)
Create a new VJVoxelLoc from a vector.

VJVoxelLoc(float[] vs, VJMatrix m)
Create a new VJVoxelLoc from a transformed vector location.

VJVoxelLoc(float x, float y, float z)
Create a new VJVoxelLoc for an objectspace location x,y,z.

VJVoxelLoc(float x, float y, float z, VJMatrix m)
Create a new VJVoxelLoc from a transformed vector location.

Method Summary

int	getnnx() Get the x-position rounded to the nearest int for nearest neighborhood interpolation.
int	getnny() Get the y-position rounded to the nearest int for nearest neighborhood interpolation.
int	getnnz() Get the z-position rounded to the nearest int for nearest neighborhood interpolation.
void	getWeights()
float	getx() Get the x-position.
float	gety() Get the y-position.
float	getz() Get the z-position.
void	move(float[] dos) Move the location of this voxel with delta's in dos.
void	setx(int x) Set the value for x.
void	sety(int y) Set the value for x.
void	setz(float z) Set the value for z.
void	setz(int z) Set the value for z.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

ix

public int ix

integer floor of voxel location.

iy

public int iy

iz

public int iz

x

public float x

y

public float y

z

public float z

dx

public float dx

Difference between ix/iy/iz and x/y/z [0-1].

dy

public float dy

dz

public float dz

tlf

public float tlf

trilinear interpolation weights.

blf

public float blf

trf

public float trf

brf

public float brf

tlb

public float tlb

blb

public float blb

trb

public float trb

brb

public float brb

hasWeights

public boolean hasWeights

Constructor Detail

VJVoxelLoc

public VJVoxelLoc()

Empty VJVoxelLoc creator.

VJVoxelLoc

public VJVoxelLoc(float x,
                  float y,
                  float z)

Create a new VJVoxelLoc for an objectspace location x,y,z. Voxel coordinates are always in object space.

Parameters:

x,y,z - float the object space location.

VJVoxelLoc

public VJVoxelLoc(float[] vs,
                  VJMatrix m)

Create a new VJVoxelLoc from a transformed vector location. Voxel coordinates are always in object space.

Parameters:

vs - float[4] the location vector (homogenous).

m - the the transformation matrix.

VJVoxelLoc

public VJVoxelLoc(float x,
                  float y,
                  float z,
                  VJMatrix m)

Create a new VJVoxelLoc from a transformed vector location.

Parameters:

x, - y, z the location vector in un-transformed coordinates.

m - the transformation matrix.

VJVoxelLoc

public VJVoxelLoc(float[] v)

Create a new VJVoxelLoc from a vector.

Parameters:

v - the location vector (homogenous).

Method Detail

getx

public float getx()

Get the x-position.

Returns:

a float with the x position.

gety

public float gety()

Get the y-position.

Returns:

a float with the x position.

getz

public float getz()

Get the z-position.

Returns:

a float with the x position.

getnnx

public int getnnx()

Get the x-position rounded to the nearest int for nearest neighborhood interpolation.

Returns:

an int with the closest integer x position.

getnny

public int getnny()

Get the y-position rounded to the nearest int for nearest neighborhood interpolation.

Returns:

an int with the closest integer y position.

getnnz

public int getnnz()

Get the z-position rounded to the nearest int for nearest neighborhood interpolation.

Returns:

an int with the closest integer z position.

setz

public void setz(float z)

Set the value for z.

Parameters:

z - the value to set.

setx

public void setx(int x)

Set the value for x.

Parameters:

x - an int with the x value.

sety

public void sety(int y)

Set the value for x.

Parameters:

y - an int with the y value.

setz

public void setz(int z)

Set the value for z.

Parameters:

z - an int with the z value.

getWeights

public void getWeights()

move

public void move(float[] dos)

Move the location of this voxel with delta's in dos. Useful for stepping through a number of voxels on a straight line.

Parameters:

dos - float[>=3] a vector containing the motion.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object