Android Open Source - wiigee_android_test Gesture

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License

The source code is released under:

GNU Lesser General Public License

Java Source Code

/*
 * wiigee - accelerometerbased gesture recognition
 * Copyright (C) 2007, 2008, 2009 Benjamin Poppinga
 * /*w  w  w .j a va 2  s .  c  o 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.logic;

import java.util.Vector;
import org.wiigee.event.AccelerationEvent;

/**
 * This class represents ONE movement trajectory in a
 * concrete instance.
 * 
 * @author Benjamin 'BePo' Poppinga
 */

public class Gesture implements Cloneable {

  /** Min/MaxAcceleration setup manually? */
  private boolean minmaxmanual;
  private double minacc;
  private double maxacc;
  
  /** The complete trajectory as WiimoteAccelerationEvents
   * as a vector. It's a vector because we don't want to
   * loose the chronology of the stored events.
   */
  private Vector<AccelerationEvent> data;

  /**
   * Create an empty Gesture.
   */
  public Gesture() {
    this.data = new Vector<AccelerationEvent>();
  }

  /** 
   * Make a deep copy of another Gesture object.
   * 
   * @param original Another Gesture object
   */
  public Gesture(Gesture original) {
    this.data = new Vector<AccelerationEvent>();
    Vector<AccelerationEvent> origin = original.getData();
    for (int i = 0; i < origin.size(); i++) {
      this.add((AccelerationEvent) origin.get(i));
    }
  }


  /**
   * Adds a new acceleration event to this gesture.
   * 
   * @param event The WiimoteAccelerationEvent to add.
   */
  public void add(AccelerationEvent event) {
    this.data.add(event);
  }

  /**
   * Returns the last acceleration added to this gesture.
   * 
   * @return the last acceleration event added.
   */
  public AccelerationEvent getLastData() {
    return (AccelerationEvent) this.data.get(this.data.size() - 1);
  }

  /**
   * Returns the whole chronological sequence of accelerations as
   * a vector.
   * 
   * @return chronological sequence of accelerations.
   */
  public Vector<AccelerationEvent> getData() {
    return this.data;
  }
  
  /**
   * Removes the first element of the acceleration queue of a gesture
   */
  public void removeFirstData() {
    this.data.remove(0);
  }
  
  public int getCountOfData() {
    return this.data.size();
  }
  
  public void setMaxAndMinAcceleration(double max, double min) {
    this.maxacc = max;
    this.minacc = min;
    this.minmaxmanual = true;
  }
  
  public double getMaxAcceleration() {
    if(!this.minmaxmanual) {
    double maxacc = Double.MIN_VALUE;
    for(int i=0; i<this.data.size(); i++) {
      if(Math.abs(this.data.get(i).getX()) > maxacc) {
        maxacc=Math.abs(this.data.get(i).getX());
      }
      if(Math.abs(this.data.get(i).getY()) > maxacc) {
        maxacc=Math.abs(this.data.get(i).getY());
      }
      if(Math.abs(this.data.get(i).getZ()) > maxacc) {
        maxacc=Math.abs(this.data.get(i).getZ());
      }
    }
    return maxacc;
    } else {
      return this.maxacc;
    }
  }
  
  public double getMinAcceleration() {
    if(!this.minmaxmanual) {
    double minacc = Double.MAX_VALUE;
    for(int i=0; i<this.data.size(); i++) {
      if(Math.abs(this.data.get(i).getX()) < minacc) {
        minacc=Math.abs(this.data.get(i).getX());
      }
      if(Math.abs(this.data.get(i).getY()) < minacc) {
        minacc=Math.abs(this.data.get(i).getY());
      }
      if(Math.abs(this.data.get(i).getZ()) < minacc) {
        minacc=Math.abs(this.data.get(i).getZ());
      }
    }
    return minacc;
    } else {
      return this.minacc;  
    }
  }
}

Java Source Code List

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