For a bit of fun I’m going through the DARPA Shredder Challenge puzzles. The challenge ended 5 years ago (and I’m not a computer scientist, besides), so I’m sticking with the tools and technologies I use professionally, despite their potential inefficiency or inappropriateness for the task.
My first problem, right off the bat—trying to load the puzzle image into a playground kept coming up with the wrong dimensions, by almost an order of magnitude. The full-size image is important since I’m basically working with the image on a pixel-by-pixel basis, and the details I needed for analysis was getting blown away. Pretty much nothing I did that involved
NSImage in any way would work, and since I just needed to get at the raw pixel data, I skipped it entirely:
(Some lines split out to reduce horizontal scrolling)
Note that using
NSData(contentsOfURL:) in conjunction with
NSBitmapImageRep(data:) did not work, having the same dimensions problem as the simpler solutions.