convert To Unit Vector - Android java.lang

Android examples for java.lang:Math Vector

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Description

convert To Unit Vector

Demo Code

/*//from  ww  w.  java 2 s.  c o m
 * Copyright Kirill Morozov 2012
 * 
 * 
   This file is part of Mapper.

    Mapper is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Mapper is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with Mapper.  If not, see <http://www.gnu.org/licenses/>.
 * 
 * 
 */
//package com.java2s;

public class Main {
    public static void convertToUnitVector(float[] vectorOut,
            float[] vectorIn) {
        float magnitude = vectorMagnitude(vectorIn);
        for (int i = 0; i < vectorIn.length; i++) {
            vectorOut[i] = vectorIn[i] / magnitude;
        }
    }

    public static float vectorMagnitude(float[] vector) {
        float accum = 0;

        for (int i = 0; i < vector.length; i++) {
            accum += Math.pow(vector[i], 2);
        }

        return (float) Math.sqrt(accum);
    }
}

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