Android Open Source - Look Position Timer Task

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License

The source code is released under:

====================== LOOK! LICENSING TERMS ====================== look! is licensed under the BSD 3-Clause (also known as "BSD New" or "BSD Simplified"), as follows: Copyright (c) 2010-2012, Look...

Java Source Code

/**
*-----------------------------------------------------------------------------
* Copyright (c) 2012, Look! Development Team
* All rights reserved.//from   w  ww . j  a  v a 2  s. c  o m
*
* Distributed under the terms of the BSD Simplified License.
*
* The full license is in the LICENSE file, distributed with this software.
*-----------------------------------------------------------------------------
*/
package es.ucm.look.ar.util;

import java.util.TimerTask;

import android.content.Context;
import android.view.Display;
import android.view.Surface;
import es.ucm.look.data.World;
import es.ucm.look.locationProvider.LocationProvider;

public class PositionTimerTask extends TimerTask {

  private LocationProvider locationProvider;
  private float factor;
  private Display display;
  private World world;
  private float[] lastPosition;

  public PositionTimerTask(Display d, Context c, World world) {
    locationProvider = new LocationProvider(c);
    display = d;
    this.world = world;
    factor = 2.0f;
  }

  @Override
  public void run() {
    locationProvider.run();
    float[] f = LocationProvider.getPosition();

    if (lastPosition != null) {
      float diffX = f[0] - lastPosition[0];
      float diffY = f[1] - lastPosition[1];

        synchronized (world.getLocation()) {
          int rotation = display.getRotation();
          switch (rotation) {
          case Surface.ROTATION_0:
            world.getLocation().add(diffX * factor, 0.0f, diffY * factor);
            break;
          case Surface.ROTATION_90:
            world.getLocation().add(diffY * factor, 0.0f, -diffX * factor);
            break;
          case Surface.ROTATION_270:
            world.getLocation().add(-diffY * factor, 0.0f, diffX * factor);
            break;

          }
        }

    }

    lastPosition = f;
  }
}

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