Android Open Source - min3d Example Accelerometer

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License

The source code is released under:

MIT License

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Java Source Code

package com.min3d;
/*from   w w w. j  ava2s  . co m*/
import android.content.pm.ActivityInfo;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;

import com.min3d.lib.IParser;
import com.min3d.lib.Parser;
import com.min3d.lib.core.Object3dContainer;
import com.min3d.lib.core.RendererActivity;
import com.min3d.lib.objectPrimitives.SkyBox;
import com.min3d.lib.vos.Light;
import com.min3d.lib.vos.Number3d;

public class ExampleAccelerometer extends RendererActivity implements SensorEventListener {
  private final float FILTERING_FACTOR = .3f;
  
  private SkyBox mSkyBox;
  private SensorManager mSensorManager;
  private Sensor mAccelerometer;
  private Number3d mAccVals;
  private Object3dContainer mMonster;
  
  @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        mSensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
        mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        mAccVals = new Number3d();
  }
  
  public void initScene()
  {
    scene.lights().add(new Light());
    
    mSkyBox = new SkyBox(5.0f, 2);
    mSkyBox.addTexture(SkyBox.Face.North,   R.drawable.wood_back,   "north");
    mSkyBox.addTexture(SkyBox.Face.East,   R.drawable.wood_right,   "east");
    mSkyBox.addTexture(SkyBox.Face.South,   R.drawable.wood_back,   "south");
    mSkyBox.addTexture(SkyBox.Face.West,   R.drawable.wood_left,   "west");
    mSkyBox.addTexture(SkyBox.Face.Up,    R.drawable.ceiling,   "up");
    mSkyBox.addTexture(SkyBox.Face.Down,   R.drawable.floor,     "down");
    mSkyBox.scale().y = 0.8f;
    mSkyBox.scale().z = 2.0f;
    scene.addChild(mSkyBox);
    
    IParser parser = Parser.createParser(Parser.Type.MAX_3DS,
                getResources(), R.raw.monster_high, getPackageName(), true);
    parser.parse();

    mMonster = parser.getParsedObject();
    mMonster.scale().x = mMonster.scale().y = mMonster.scale().z  = .1f;
    mMonster.position().y = -2.5f;
    mMonster.position().z = -3;
    scene.addChild(mMonster);
      
    mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_UI);
  }
  
  @Override
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
    // TODO Auto-generated method stub
  }

  @Override
  public void onSensorChanged(SensorEvent event) {
    if (event.sensor.getType() != Sensor.TYPE_ACCELEROMETER)
            return;
    
    // low-pass filter to make the movement more stable
    mAccVals.x = (float) (-event.values[1] * FILTERING_FACTOR + mAccVals.x * (1.0 - FILTERING_FACTOR));
    mAccVals.y = (float) (event.values[0] * FILTERING_FACTOR + mAccVals.y * (1.0 - FILTERING_FACTOR));
    
    scene.camera().position.x = mAccVals.x * .2f;
        scene.camera().position.y = mAccVals.y * .2f;
        
        scene.camera().target.x = -scene.camera().position.x;
        scene.camera().target.y = -scene.camera().position.y;
  }
}

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