Weird I also made a small dot-lens javascript library to do the same thing just the other day... https://github.com/jb55/dot-lens https://github.com/jb55/dot-l

Weird I also made a small dot-lens javascript library to do the same thing just the other day... https://github.com/jb55/dot-lens https://github.com/jb55/dot-lens It even works for zooming into arrays