For a given angle in radians, return the equivalent angle in the range [-PI, PI]. - Java java.lang

Java examples for java.lang:Math Function

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Description

For a given angle in radians, return the equivalent angle in the range [-PI, PI].

Demo Code

/**/*  w  w w .  j a va 2  s  .  c o  m*/
 * Copyright 2004-2006 DFKI GmbH.
 * All Rights Reserved.  Use is subject to license terms.
 * 
 * Permission is hereby granted, free of charge, to use and distribute
 * this software and its documentation without restriction, including
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 * permit persons to whom this work is furnished to do so, subject to
 * the following conditions:
 * 
 * 1. The code must retain the above copyright notice, this list of
 *    conditions and the following disclaimer.
 * 2. Any modifications must be clearly marked as such.
 * 3. Original authors' names are not deleted.
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 *    derived from this software without specific prior written
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 * REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DFKI GMBH NOR THE
 * CONTRIBUTORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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 */
//package com.java2s;

public class Main {
    /** The Constant TWOPI. */
    public static final double TWOPI = 2 * Math.PI;

    /**
     * For a given angle in radians, return the equivalent angle in the range [-PI, PI].
     *
     * @param angle the angle
     * @return the double
     */
    public static double angleToDefaultAngle(double angle) {
        return (angle + Math.PI) % (-TWOPI) + Math.PI;
    }

    /**
     * For each of an array of angles (in radians), return the equivalent angle in the range [-PI, PI].
     *
     * @param angle the angle
     */
    public static void angleToDefaultAngle(double[] angle) {
        for (int i = 0; i < angle.length; i++) {
            angle[i] = angleToDefaultAngle(angle[i]);
        }
    }
}

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