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GNU Lesser General Public License
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/* * wiigee - accelerometerbased gesture recognition * Copyright (C) 2007, 2008, 2009 Benjamin Poppinga * /* w ww . ja v a 2 s .co m*/ * Developed at University of Oldenburg * Contact: wiigee@benjaminpoppinga.de * * This file is part of wiigee. * * wiigee 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 2 of the License, or * (at your option) any later version. * * This program 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 this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ package org.wiigee.filter; /** * This filter removes a vector, if it doesn't differ enough from * the previously retrieved filter. * * @author Benjamin 'BePo' Poppinga */ public class DirectionalEquivalenceFilter extends Filter { private double sensivity; private double[] reference; public DirectionalEquivalenceFilter() { super(); this.reset(); } public void reset() { this.sensivity=0.2; this.reference = new double[] {0.0, 0.0, 0.0}; } public double[] filterAlgorithm(double[] vector) { if(vector[0]<reference[0]-this.sensivity || vector[0]>reference[0]+this.sensivity || vector[1]<reference[1]-this.sensivity || vector[1]>reference[1]+this.sensivity || vector[2]<reference[2]-this.sensivity || vector[2]>reference[2]+this.sensivity) { this.reference=vector; return vector; } else { return null; } } public void setSensivity(double sensivity) { this.sensivity=sensivity; } public double getSensivity() { return this.sensivity; } }