Rotating and flipping images is computationally heavy and I didn’t want anybody deep-linking into our rotated images. To prevent that I have adjusted the code of the .php which serves the rotated images to add an extra 45 degree rotation if a rotated image is deep-linked. I could block display entirely but until I am completely sure there are no glitches I’d rather do this. During ongoing development, it’s easier to spot that an image has been rotated than wonder why it isn’t displaying. It’ll need a fair bit of testing and may need removing if there are too many false positives in the detection of alien sites, but it’s worth a try.
By Kate Phizackerley