snakeprogram
Class TwoDDeformation

java.lang.Object
  snakeprogram.TwoDDeformation

Direct Known Subclasses:

TwoDContourDeformation, TwoDCurveDeformation

public abstract class TwoDDeformation
extends java.lang.Object

This class deforms snakes. You create an instance of this class either a TwoDContourDeformation or a TwoDCurveDevormation and set the relevant parameter, then you can deform the snake. This modifies the X-Y data inplace.

Method Summary

abstract void	addSnakePoints(double MAX_SEGMENT_LENGTH) Modifies the current dataset to interpolate points.
void	deformSnake()
abstract void	energyWithGradient(double[] Vx, double[] Vy) Modifies Vx,Vy in place to find the forces it uses the image term and the 'stretching' term.
abstract void	initializeMatrix() Initializes the double[][] array according to curve type
static double[]	interpolate(double[] p1, double[] p2, double t) Interpolates arrays of values using the above interpolation function
static double	interpolate(double x1, double x2, double t)
static double	pointDistance(double[] x1, double[] x2)
void	setAlpha(double alpha) Set this before using
void	setBackInt(double backInt) This needs to be set
void	setBeta(double beta) Needs to be set
void	setForInt(double forInt) This needs to be set
void	setGamma(double gamma) Needs to be set
void	setStretch(double stretch) No default value needs to be set for TwoDCurveDeformations
void	setWeight(double weight) This needs to be set

Methods inherited from class java.lang.Object

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

Method Detail

setAlpha

public void setAlpha(double alpha)

Set this before using

setBeta

public void setBeta(double beta)

Needs to be set

setGamma

public void setGamma(double gamma)

Needs to be set

setWeight

public void setWeight(double weight)

This needs to be set

setForInt

public void setForInt(double forInt)

This needs to be set

setBackInt

public void setBackInt(double backInt)

This needs to be set

setStretch

public void setStretch(double stretch)

No default value needs to be set for TwoDCurveDeformations

deformSnake

public void deformSnake()

pointDistance

public static double pointDistance(double[] x1,
                                   double[] x2)

interpolate

public static double interpolate(double x1,
                                 double x2,
                                 double t)

interpolate

public static double[] interpolate(double[] p1,
                                   double[] p2,
                                   double t)

Interpolates arrays of values using the above interpolation function

addSnakePoints

public abstract void addSnakePoints(double MAX_SEGMENT_LENGTH)
                             throws java.lang.IllegalAccessException

Modifies the current dataset to interpolate points. The different deformations have a different way to modify the points

Throws:

java.lang.IllegalAccessException

energyWithGradient

public abstract void energyWithGradient(double[] Vx,
                                        double[] Vy)

Modifies Vx,Vy in place to find the forces it uses the image term and the 'stretching' term.

initializeMatrix

public abstract void initializeMatrix()

Initializes the double[][] array according to curve type