如何在不调整大小（不扩大宽度或高度）的情况下旋转原始图像

Question

I have rotate the image using UIRotationGestureRecognizer and it's working fine. But the image width & height increased.

Original Image Size: x = 85.000000 , y = 83.000000 , width = 150.000000 , height = 150.000000
After rotating image size : x = 54.476551 , y = 52.476551 , width = 211.046906 , height = 211.046906

How to handle this problem? I am trying like this:

recognizer.view.transform = CGAffineTransformRotate(recognizer.view.transform, recognizer.rotation);
recognizer.rotation = 0;

Answer 1

CGAffineTransform transform = self.view.transform;
            if (UIDeviceOrientationLandscapeLeft == deviceOrientation) {
                transform = CGAffineTransformRotate(transform, -(M_PI / 2.0));
            } else {
                transform = CGAffineTransformRotate(transform, M_PI / 2.0);
            }
            self.view.transform = transform;

I hope it helps