How to merge two images after rotate the image?

Question

After rotate the image how to merge the rotation image? I using the below code, It

Answer 1

If you want while device orientation use this code

- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
    toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
    //Your cgrectmake for landscape
}
else
{
    //Your cgrectmake for Portrait
}
}