Util (Fiji Javadocs 0-SNAPSHOT API)

java.lang.Object
- ini.trakem2.vector.Util

```
public class Util
extends Object
```

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class Util.CircularSequence

Nested Classes
Modifier and Type	Class and Description
`static class`	`Util.CircularSequence`

Constructor Summary

Constructors
Constructor and Description

Util()

Constructors
Constructor and Description
`Util()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static void`	`convolveGaussianSigma1(double[] in, double[] out, Util.CircularSequence seq)`
`static double[]`	`copy(double[] a, int new_length)` Will make a new double[] array, then fit in it as many points from the given array as possible according to the desired new length.
`static double[]`	`copy(double[] a, int first, int new_length)`
`static ini.trakem2.vector.Util.DoublePolygon`	`createInterpolatedPolygon(ini.trakem2.vector.Util.DoublePolygon p, double interval, boolean isLine)` Copied from ImageJ's ij.gui.PolygonRoi.getInterpolatedPolygon, by Wayne Rasband and collaborators.
`static double`	`getAngle(double x, double y)` Returns the angle in radians of the given polar coordinates, correcting the Math.atan2 output.
`static void`	`reverse(double[] a)` Reverse in place an array of doubles.

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

- Constructor Detail
  - Util
```
public Util()
```
- Method Detail
  - copy
```
public static final double[] copy(double[] a,
                                  int new_length)
```
    Will make a new double[] array, then fit in it as many points from the given array as possible according to the desired new length. If the new length is shorter that a.length, it will shrink and crop from the end; if larger, the extra spaces will be set with zeros.
  - copy
```
public static final double[] copy(double[] a,
                                  int first,
                                  int new_length)
```
  - getAngle
```
public static final double getAngle(double x,
                                    double y)
```
    Returns the angle in radians of the given polar coordinates, correcting the Math.atan2 output. Adjusting so that 0 is 3 o'clock, PI+PI/2 is 12 o'clock, PI is 9 o'clock, and PI/2 is 6 o'clock (why atan2 doesn't output angles this way? I remember I had the same problem for Pipe.java in the A_3D_editing plugin)
  - reverse
```
public static final void reverse(double[] a)
```
    Reverse in place an array of doubles.
  - convolveGaussianSigma1
```
public static final void convolveGaussianSigma1(double[] in,
                                                double[] out,
                                                Util.CircularSequence seq)
```
  - createInterpolatedPolygon
```
public static final ini.trakem2.vector.Util.DoublePolygon createInterpolatedPolygon(ini.trakem2.vector.Util.DoublePolygon p,
                                                                                    double interval,
                                                                                    boolean isLine)
```
    Copied from ImageJ's ij.gui.PolygonRoi.getInterpolatedPolygon, by Wayne Rasband and collaborators. The reason I copied this method is that creating a new PolygonRoi just to get an interpolated polygon processes the float[] arrays of the coordinates, subtracting the minimum x,y. Not only it is an extra operation but it is also in place, altering data arrays. Additionally, double arrays were required.

Class Util

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Util

Method Detail

copy

copy

getAngle

reverse

convolveGaussianSigma1

createInterpolatedPolygon