title: Rotating image using objective C
body: <p>I am trying to rotate an image. This I am succeeding in doing. The problem is that when I am clicking down and dragging slightly, the image rotates completely to reach the point where I have clicked and then rotates slowly as I drag the image clockwise. I am concerned to why it is rotating completely to the place that I am dragging. I want the dragging to start from the position it is found and NOT to rotate to the place my finger is down on and then starts from there.</p>
  
  <p>This is my code:</p>
  
  <p>-</p>
  
  <pre><code>    (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {   
      }
  
      -(void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
          NSSet *allTouches = [event allTouches];
  
          int len = [allTouches count]-1;
  
          UITouch *touch =[[allTouches allObjects] objectAtIndex:len];
          CGPoint location = [touch locationInView:[self superview]];
          float theAngle = atan2( location.y-self.center.y, location.x-self.center.x );
  
          totalRadians = theAngle;
  
          [self rotateImage:theAngle];
  
      }
  
  - (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
  }
  
  -(void) rotateImage:(float)angleRadians{
  
      self.transform = CGAffineTransformMakeRotation(angleRadians);
      CATransform3D rotatedTransform = self.layer.transform;
      self.layer.transform = rotatedTransform;    
  }
  </code></pre>
  
  <p>Am I doing anything wrong?</p>
  
  <p>Thanks!</p>