[Tut] How to perform AndEngine Examples of Nicolas Gramlich - AugmentedRealityHorizonExample (with camera horizontally)

This example is the same as AugmentedRealityExample using 2 files in org.anddev.andengine.extension.augmentedreality package

Create new class named AugmentedRealityHorizonExample in org.anddev.andengine.examples package. Here is the code of this class:

package org.anddev.andengine.examples;

import org.anddev.andengine.engine.Engine;

import org.anddev.andengine.engine.camera.Camera;

import org.anddev.andengine.engine.options.EngineOptions;

import org.anddev.andengine.engine.options.EngineOptions.ScreenOrientation;

import org.anddev.andengine.engine.options.resolutionpolicy.RatioResolutionPolicy;

import org.anddev.andengine.entity.scene.Scene;

import org.anddev.andengine.entity.scene.background.ColorBackground;

import org.anddev.andengine.entity.sprite.Sprite;

import org.anddev.andengine.entity.util.FPSLogger;

import org.anddev.andengine.extension.augmentedreality.BaseAugmentedRealityGameActivity;

import org.anddev.andengine.opengl.texture.TextureOptions;

import org.anddev.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlas;

import org.anddev.andengine.opengl.texture.atlas.bitmap.BitmapTextureAtlasTextureRegionFactory;

import org.anddev.andengine.opengl.texture.region.TextureRegion;

import org.anddev.andengine.sensor.orientation.IOrientationListener;

import org.anddev.andengine.sensor.orientation.OrientationData;

import org.anddev.andengine.util.Debug;

import android.widget.Toast;

/**

 * (c) 2010 Nicolas Gramlich

 * (c) 2011 Zynga

 *

 * @author Nicolas Gramlich

 * @since 11:54:51 - 03.04.2010

 */

public class AugmentedRealityHorizonExample extends BaseAugmentedRealityGameActivity implements IOrientationListener {

// ===========================================================

// Constants

// ===========================================================

private static final int CAMERA_WIDTH = 720;

private static final int CAMERA_HEIGHT = 480;

// ===========================================================

// Fields

// ===========================================================

private Camera mCamera;

private BitmapTextureAtlas mBitmapTextureAtlas;

private TextureRegion mFaceTextureRegion;

private Sprite mFace;

// ===========================================================

// Constructors

// ===========================================================

// ===========================================================

// Getter & Setter

// ===========================================================

// ===========================================================

// Methods for/from SuperClass/Interfaces

// ===========================================================

@Override

public Engine onLoadEngine() {

Toast.makeText(this, "If you don't see a sprite moving over the screen, try starting this while already being in Landscape orientation!!", Toast.LENGTH_LONG).show();

this.mCamera = new Camera(0, 0, CAMERA_WIDTH, CAMERA_HEIGHT);

return new Engine(new EngineOptions(true, ScreenOrientation.LANDSCAPE, new RatioResolutionPolicy(CAMERA_WIDTH, CAMERA_HEIGHT), this.mCamera));

}

@Override

public void onLoadResources() {

this.mBitmapTextureAtlas = new BitmapTextureAtlas(32, 32, TextureOptions.BILINEAR_PREMULTIPLYALPHA);

BitmapTextureAtlasTextureRegionFactory.setAssetBasePath("gfx/");

this.mFaceTextureRegion = BitmapTextureAtlasTextureRegionFactory.createFromAsset(this.mBitmapTextureAtlas, this, "face_box.png", 0, 0);

this.mEngine.getTextureManager().loadTexture(this.mBitmapTextureAtlas);

}

@Override

public Scene onLoadScene() {

this.mEngine.registerUpdateHandler(new FPSLogger());

final Scene scene = new Scene();

// scene.setBackgroundEnabled(false);

scene.setBackground(new ColorBackground(0.0f, 0.0f, 0.0f, 0.0f));

final int centerX = (CAMERA_WIDTH - this.mFaceTextureRegion.getWidth()) / 2;

final int centerY = (CAMERA_HEIGHT - this.mFaceTextureRegion.getHeight()) / 2;

this.mFace = new Sprite(centerX, centerY, this.mFaceTextureRegion);

scene.attachChild(this.mFace);

return scene;

}

@Override

public void onLoadComplete() {

this.enableOrientationSensor(this);

}

@Override

public void onOrientationChanged(final OrientationData pOrientationData) {

final float roll = pOrientationData.getRoll();

Debug.d("Roll: " + pOrientationData.getRoll());

this.mFace.setPosition(CAMERA_WIDTH / 2, CAMERA_HEIGHT / 2 + (roll - 40) * 5);

}

// ===========================================================

// Methods

// ===========================================================

// ===========================================================

// Inner and Anonymous Classes

// ===========================================================

}

Open the AndroidManifest.xml and append the activity element below the previous activity element like this:

<activity

            android:name=".AugmentedRealityExample"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="org.anddev.andengine.examples.AUGMENTEDREALITYEXAMPLE" />

                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>

        </activity>

        <activity

            android:name=".AugmentedRealityHorizonExample"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="org.anddev.andengine.examples.AUGMENTEDREALITYHORIZONEXAMPLE" />

                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>

        </activity>

Run the project (in debug mode) to re-generate apk file in the bin folderOpen and Edit the batch command file named r.bat in the bin folder with some commands like this:

adb install -r AndEngineDemo.apk
adb shell am start -n org.anddev.andengine.examples/.AugmentedRealityHorizonExample

Run android emulator with virtualbox
Then run the batch file r.bat

The result's like this with animated pictures

We only see camera like this on the emulator horizontally :)

[ttaiit.blogspot.com] - please write clearly the source on copying this tutorial :)