JNIEXPORT int JNICALL
Java_com_wheelphone_targetNavigation_WheelphoneTargetNavigation_initTracker(JNIEnv *, jobject)
{
    LOG("Java_com_qualcomm_QCARSamples_FrameMarkers_FrameMarkers_initTracker");
    
    // Initialize the marker tracker:
    QCAR::TrackerManager& trackerManager = QCAR::TrackerManager::getInstance();
    QCAR::Tracker* trackerBase = trackerManager.initTracker(QCAR::Tracker::MARKER_TRACKER);
    QCAR::MarkerTracker* markerTracker = static_cast<QCAR::MarkerTracker*>(trackerBase);
    if (markerTracker == NULL)
    {
        LOG("Failed to initialize MarkerTracker.");
        return 0;
    }
    
    if (!markerTracker->createFrameMarker(0, "MarkerQ", QCAR::Vec2F(50,50)))
    {
        LOG("Failed to create frame marker Q.");
    }
    if (!markerTracker->createFrameMarker(1, "MarkerC", QCAR::Vec2F(50,50)))
    {
        LOG("Failed to create frame marker C.");
    }
    if (!markerTracker->createFrameMarker(2, "MarkerA", QCAR::Vec2F(50,50)))
    {
        LOG("Failed to create frame marker A.");
    }
    if (!markerTracker->createFrameMarker(3, "MarkerR", QCAR::Vec2F(50,50)))
    {
        LOG("Failed to create frame marker R.");
    }
    
    LOG("Successfully initialized MarkerTracker.");

    return 1;
}
JNIEXPORT int JNICALL
Java_rajawali_vuforia_RajawaliVuforiaActivity_createFrameMarker(JNIEnv* env,
		jobject object, jint markerId, jstring markerName, jfloat width,
		jfloat height) {
	QCAR::TrackerManager& trackerManager = QCAR::TrackerManager::getInstance();
	QCAR::Tracker* trackerBase = trackerManager.getTracker(
			QCAR::MarkerTracker::getClassType());

	if (trackerBase != 0) {
		QCAR::MarkerTracker* markerTracker =
				static_cast<QCAR::MarkerTracker*>(trackerBase);

		const char *nativeString = env->GetStringUTFChars(markerName, NULL);

		if (!markerTracker->createFrameMarker((int) markerId, nativeString,
				QCAR::Vec2F((float) width, (float) height))) {
			LOG("Failed to create frame marker.");
		}
		LOG("Successfully created frame marker.");
		env->ReleaseStringUTFChars(markerName, nativeString);
	}
}