Picture Cropping

I need the user to crop a picture they have drawn in the App. I have the usual clunky draw a box around the area you would like to crop approach in place but am wondering is there a way to just do it for the user? If there was an RGBSurface I could just test the pixel colors to find the boundaries but we don’t have that yet. Other suggestions?

RGBSurface was added for iOS in 2020r2. If there’s something missing let us know.


Thanks @William_Yu , I didn’t notice that in the release notes. That will do the trick.