/*
* Copyright 2008-2013, ETH Zürich, Samuel Welten, Michael Kuhn, Tobias Langner,
* Sandro Affentranger, Lukas Bossard, Michael Grob, Rahul Jain,
* Dominic Langenegger, Sonia Mayor Alonso, Roger Odermatt, Tobias Schlueter,
* Yannick Stucki, Sebastian Wendland, Samuel Zehnder, Samuel Zihlmann,
* Samuel Zweifel
*
* This file is part of Jukefox.
*
* Jukefox is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or any later version. Jukefox 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* Jukefox. If not, see <http://www.gnu.org/licenses/>.
*/
package ch.ethz.dcg.pancho3.data.context;
import android.hardware.SensorEvent;
public class ProximityDataHandler extends FloatSensorDataHandler<SensorEvent> {
public static final String TAG = ProximityDataHandler.class.getSimpleName();
private float maxValue;
@Override
public synchronized void onNewEvent(SensorEvent event) {
if (event == null) {
return;
}
float dist = event.values[0];
// TODO: basically the proximity sensor should return the distance. But
// a lot of prox. sensors are binary and should therefore return either
// max value or something lower (according to the android specs.).
// However, the DEFY sensor says the max
// value is 1E8 but returns 1E9 if the proximity sensor measures
// nothing. Therefore a threshhold is just set to 30 centimeters
if (dist > 30) {
dist = 1;
} else {
dist = 0;
}
// Log.v(TAG, "Proximity: " + dist);
appendSensorData(dist, System.currentTimeMillis());
}
public void setMax(float maximumRange) {
maxValue = maximumRange;
// Log.v(TAG, "max value: " + maxValue);
}
}