ini.trakem2.vector

Class Util

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

Constructor Summary

Constructors

Constructor and Description
Util()

Method Summary

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.