java.lang.Object
- java.lang.Thread
- - gov.nih.mipav.model.algorithms.AlgorithmBase
  - - gov.nih.mipav.model.algorithms.AlgorithmArcLength

All Implemented Interfaces:

java.awt.event.ActionListener, java.awt.event.WindowListener, java.lang.Runnable, java.util.EventListener
```
public class AlgorithmArcLength
extends AlgorithmBase
```
This algorithm calculates the arc-length of a Bspline fit to user defined control points. This algorithm calculates the entire curve length and also is able to calculate the arc-length between two points.

Version:

0.1 April 27, 1998

Nested Class Summary
- Nested classes/interfaces inherited from class java.lang.Thread
  java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields
Modifier and Type	Field	Description
`private AlgorithmBSpline`	`bSpline`	DOCUMENT ME!
`static int`	`INTEGRAL_ORDER`	DOCUMENT ME!
`static int`	`INVLEN_MAXITER`	DOCUMENT ME!
`static float`	`INVLEN_TOLERANCE`	DOCUMENT ME!
`private float[][]`	`rom`	DOCUMENT ME!
`private float`	`totalLen`	DOCUMENT ME!
`private float[]`	`xPoints`	DOCUMENT ME!
`private float[]`	`yPoints`	DOCUMENT ME!
`private float[]`	`zPoints`	DOCUMENT ME!

Fields inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase
destFlag, destImage, image25D, mask, maxProgressValue, minProgressValue, multiThreadingEnabled, nthreads, progress, progressModulus, progressStep, runningInSeparateThread, separable, srcImage, threadStopped

Fields inherited from class java.lang.Thread
MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors
Constructor	Description
`AlgorithmArcLength(float[] xPts, float[] yPts)`	Algorithm constructor.
`AlgorithmArcLength(float[] xPts, float[] yPts, float[] zPts)`	Algorithm constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`float`	`getTotalArcLength()`	Returns total arc-length of the segment.
`float`	`invlen(float pct)`	Finds the point at some percentage along the curve using simple midpoint root finding algorithm.
`float`	`invlenNewton(float pct)`	Finds the point at some percentage along the curve using Newtons method of root finding.
`float`	`length(float a, float b)`	The length is calculated between to points a,b using Romberg integration.
`void`	`runAlgorithm()`	DOCUMENT ME!
`void`	`setPoints(float[] xPts, float[] yPts)`	Sets the controls points of the Bspline and calculates the total arc-length.
`void`	`setPoints(float[] xPts, float[] yPts, float[] zPts)`	Sets the controls points of the Bspline and calculates the total arc-length.
`private float`	`speed(float q)`	Calculates the speed at some point q.

Methods inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase
actionPerformed, addListener, addProgressChangeListener, calculateImageSize, calculatePrincipleAxis, computeElapsedTime, computeElapsedTime, convertIntoFloat, delinkProgressToAlgorithm, delinkProgressToAlgorithmMulti, displayError, errorCleanUp, finalize, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, generateProgressValues, getDestImage, getElapsedTime, getMask, getMaxProgressValue, getMinProgressValue, getNumberOfThreads, getProgress, getProgressChangeListener, getProgressChangeListeners, getProgressModulus, getProgressStep, getProgressValues, getSrcImage, isCompleted, isImage25D, isMultiThreadingEnabled, isRunningInSeparateThread, isThreadStopped, linkProgressToAlgorithm, linkProgressToAlgorithm, makeProgress, notifyListeners, removeListener, removeProgressChangeListener, run, setCompleted, setImage25D, setMask, setMaxProgressValue, setMinProgressValue, setMultiThreadingEnabled, setNumberOfThreads, setProgress, setProgressModulus, setProgressStep, setProgressValues, setProgressValues, setRunningInSeparateThread, setSrcImage, setStartTime, setThreadStopped, startMethod, windowActivated, windowClosed, windowClosing, windowDeactivated, windowDeiconified, windowIconified, windowOpened

Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - INTEGRAL_ORDER
```
public static final int INTEGRAL_ORDER
```
    DOCUMENT ME!
    
    See Also:
    
    Constant Field Values
  - INVLEN_MAXITER
```
public static final int INVLEN_MAXITER
```
    DOCUMENT ME!
    
    See Also:
    
    Constant Field Values
  - INVLEN_TOLERANCE
```
public static final float INVLEN_TOLERANCE
```
    DOCUMENT ME!
    
    See Also:
    
    Constant Field Values
  - bSpline
```
private AlgorithmBSpline bSpline
```
    DOCUMENT ME!
  - rom
```
private float[][] rom
```
    DOCUMENT ME!
  - totalLen
```
private float totalLen
```
    DOCUMENT ME!
  - xPoints
```
private float[] xPoints
```
    DOCUMENT ME!
  - yPoints
```
private float[] yPoints
```
    DOCUMENT ME!
  - zPoints
```
private float[] zPoints
```
    DOCUMENT ME!
- Constructor Detail
  - AlgorithmArcLength
```
public AlgorithmArcLength(float[] xPts,
                          float[] yPts)
```
    Algorithm constructor.
    
    Parameters:
    
    xPts - x coordinate control points
    
    yPts - y coordinate control points
  - AlgorithmArcLength
```
public AlgorithmArcLength(float[] xPts,
                          float[] yPts,
                          float[] zPts)
```
    Algorithm constructor.
    
    Parameters:
    
    xPts - x coordinate control points
    
    yPts - y coordinate control points
- Method Detail
  - getTotalArcLength
```
public float getTotalArcLength()
```
    Returns total arc-length of the segment.
    
    Returns:
    
    DOCUMENT ME!
  - invlen
```
public float invlen(float pct)
```
    Finds the point at some percentage along the curve using simple midpoint root finding algorithm.
    
    Parameters:
    
    pct - percentage indicating where one would
    
    Returns:
    
    position indicates
  - invlenNewton
```
public float invlenNewton(float pct)
```
    Finds the point at some percentage along the curve using Newtons method of root finding.
    
    Parameters:
    
    pct - percentage indicating where one would
    
    Returns:
    
    position indicates
  - runAlgorithm
```
public void runAlgorithm()
```
    DOCUMENT ME!
    
    Specified by:
    
    runAlgorithm in class AlgorithmBase
  - setPoints
```
public void setPoints(float[] xPts,
                      float[] yPts)
```
    Sets the controls points of the Bspline and calculates the total arc-length.
    
    Parameters:
    
    xPts - x coordinate control points
    
    yPts - y coordinate control points
  - setPoints
```
public void setPoints(float[] xPts,
                      float[] yPts,
                      float[] zPts)
```
    Sets the controls points of the Bspline and calculates the total arc-length.
    
    Parameters:
    
    xPts - x coordinate control points
    
    yPts - y coordinate control points
  - length
```
public float length(float a,
                    float b)
```
    The length is calculated between to points a,b using Romberg integration.
    
    Parameters:
    
    a - starting position
    
    b - ending position b > a and b range
    
    Returns:
    
    length returns arc-length of the segment
  - speed
```
private float speed(float q)
```
    Calculates the speed at some point q.
    
    Parameters:
    
    q - the point where the speed is calculated
    
    Returns:
    
    speed the speed ( magnitude ) is returned

Class AlgorithmArcLength

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Field Summary

Fields inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase

Fields inherited from class java.lang.Thread

Constructor Summary

Method Summary

Methods inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase

Methods inherited from class java.lang.Thread

Methods inherited from class java.lang.Object

Field Detail

INTEGRAL_ORDER

INVLEN_MAXITER

INVLEN_TOLERANCE

bSpline

rom

totalLen

xPoints

yPoints

zPoints

Constructor Detail

AlgorithmArcLength

AlgorithmArcLength

Method Detail

getTotalArcLength

invlen

invlenNewton

runAlgorithm

setPoints

setPoints

length

speed