CGPoint velocity = [recognizer velocityInView:self.cardView];

    if (fabs(velocity.y) > fabs(velocity.x)) {
        //vertical motion
    }
    else if (fabs(velocity.x) > fabs(velocity.y)) {
        //horizontal motion
        CGPoint translation = [recognizer translationInView:self.cardView];

        recognizer.view.center = CGPointMake(recognizer.view.center.x + translation.x,
                                             recognizer.view.center.y);
        [recognizer setTranslation:CGPointMake(0, 0) inView:self.cardView];
    }