I am going from VC1 to VC2 and once VC2 is loaded, it goes to VC3 via perfomeSegue. I need VC3 already presented on VC2 before I go to VC2. Basically I need to go from VC1 to VC3 but I dont want to see VC2. I need already presented behind VC2 (user should not see VC2). To the user it goes from VC1 to VC3 Thanks

I have an imageview in a scrollvirew. User can annotate the image and draw on the image. As user starts to Zoom in-out and move the image, I would like those annotations to zoom-in-out or move. The annotation are just 4 lines forming a box and I keep the coordinate of all 4 corners of each box. I think I have to re-draw the lines every-time user Zooms-in ,Zoom-out or move the image but I have no idea how. I am using UIKit. Thanks