CALayer rotate, slide, fade in #animation with perspective #transform #3d

calayer_transform_w_perspective_anim.m

_alertContainer.alpha = 0.0;
    CATransform3D t = CATransform3DIdentity;
    t.m34 = -1.0 / 700;
    t = CATransform3DRotate(t, -40*M_PI/180., 1.0, 0.0, 0);
    t = CATransform3DTranslate(t, 0, -0, -200);
    _alertContainer.layer.transform = t;
    
    [UIView
     animateWithDuration:self.animDuration
     delay:0
     options:UIViewAnimationOptionCurveEaseOut
     animations:^{
         _alertContainer.alpha = 1.0;
//         _alertContainer.transform = CGAffineTransformIdentity;
         _alertContainer.layer.transform = CATransform3DIdentity;
     }
     completion:^(BOOL finished) {
         ;
     }];