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78 lines
2.8 KiB
Java
78 lines
2.8 KiB
Java
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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package se.sics.cooja.positioners;
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import java.util.Random;
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import se.sics.cooja.*;
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/**
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* Generates positions randomly distributed in a given interval.
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*
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* @author Fredrik Osterlind
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*/
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@ClassDescription("Random positioning")
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public class RandomPositioner extends Positioner {
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double startX, endX, startY, endY, startZ, endZ;
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private Random random = new Random(); /* Do not use main random generator for setup */
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/**
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* Creates a random positioner.
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* @param totalNumberOfMotes Total number of motes
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* @param startX X interval start
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* @param endX X interval end
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* @param startY Y interval start
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* @param endY Y interval end
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* @param startZ Z interval start
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* @param endZ Z interval end
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*/
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public RandomPositioner(int totalNumberOfMotes,
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double startX, double endX,
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double startY, double endY,
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double startZ, double endZ) {
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this.startX = startX;
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this.endX = endX;
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this.startY = startY;
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this.endY = endY;
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this.startZ = startZ;
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this.endZ = endZ;
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}
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public double[] getNextPosition() {
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return new double[] {
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startX + random.nextDouble()*(endX - startX),
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startY + random.nextDouble()*(endY - startY),
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startZ + random.nextDouble()*(endZ - startZ)
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};
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}
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}
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