Get specific corner co-ordinates of UIView/UIImageView irrespective of its rotation

Question

I have a simple UIImageView of in my screen as follow:

To get the co-ordinates of highlighted corner of this UIImageView, I use simple formula:

CGPointMake(CGRectGetMaxX(imageView.frame), CGRectGetMaxY(imageView.frame))

Now I rotate this imageView and it looks as follows:

After this rotation, how can I get the co-ordinates of this highlighted point? Because after rotation, the previous code is not applicable.

score 1 · Accepted Answer · answered Aug 24 '16 at 07:02

1

You can consult the next link topic: Transformation of Coordinates Involving Rotation

It only applies cos and sin functions to calculate (x,y) in the new rotated coordinate system. All you need is the rotation angle.

answered Aug 24 '16 at 07:02

Edder Núñez

Is there any other option without using angel? – Rohan Sanap Aug 24 '16 at 11:51
@TheRohanSanap I'm really not sure if there is another way. You can make a library for it but I still think you would need to do the math. – Edder Núñez Aug 24 '16 at 21:33

1 Answers1