gistfile1.m

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
  float rotation;
  CGRect frame = CGRectMake(0, 0, 480, 320);
  if (toInterfaceOrientation == UIInterfaceOrientationPortrait) {
    rotation = 0;
    frame = CGRectMake(0, 0, 320, 480);
  }
  else if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft) {
    rotation = M_PI/2;
  }
  else if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight) {
    rotation = -M_PI/2;
  }
  
  camView.transform = CGAffineTransformMakeRotation(rotation);
  camView.frame = frame;
}