IMUAndroid.c

// From https://github.com/gameplay3d/GamePlay/blob/master/gameplay/src/PlatformAndroid.cpp
// Line 1373

{
 // Prepare to monitor accelerometer.
    __sensorManager = ASensorManager_getInstance();
    __accelerometerSensor = ASensorManager_getDefaultSensor(__sensorManager, ASENSOR_TYPE_ACCELEROMETER);
    __gyroscopeSensor = ASensorManager_getDefaultSensor(__sensorManager, ASENSOR_TYPE_GYROSCOPE);
    __sensorEventQueue = ASensorManager_createEventQueue(__sensorManager, __state->looper, LOOPER_ID_USER, NULL, NULL);
    
    // Get the initial time.
    clock_gettime(CLOCK_REALTIME, &__timespec);
    __timeStart = timespec2millis(&__timespec);
    __timeAbsolute = 0L;
    
    while (true)
    {
        // Read all pending events.
        int ident;
        int events;
        struct android_poll_source* source;
        
        while ((ident=ALooper_pollAll(!__suspended ? 0 : -1, NULL, &events, (void**)&source)) >= 0) 
        {
            // Process this event.
            if (source != NULL)
                source->process(__state, source);
            
            // If a sensor has data, process it now.
            if (ident == LOOPER_ID_USER && __accelerometerSensor != NULL)
            {
                ASensorEventQueue_getEvents(__sensorEventQueue, &__sensorEvent, 1);
                if (__sensorEvent.type == ASENSOR_TYPE_ACCELEROMETER)
                {
                    __accelRawX = __sensorEvent.acceleration.x;
                    __accelRawY = __sensorEvent.acceleration.y;
                    __accelRawZ = __sensorEvent.acceleration.z;
                }
                else if (__sensorEvent.type == ASENSOR_TYPE_GYROSCOPE)
                {
                    __gyroRawX = __sensorEvent.vector.x;
                    __gyroRawY = __sensorEvent.vector.y;
                    __gyroRawZ = __sensorEvent.vector.z;
                }
}