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I have recently been working on a collection of mouse-controlled selection tools for Processing, much like the Adobe "marquee tools".
Users can a rectangle or a path-point-by-point method to draw multiple selections with the mouse, click on existing selections to move, modigy, or delete them, nudge active selections or selection points with keyboard keys, etc. etc. Selection objects store PVector lists and render as PShapes.
Are there existing tutorials / code examples / libraries for Processing that enable similar functionality?
This is interface for a piece of research software, but I don't want to re-invent the wheel if something similar is already out there. On the other hand, if nothing is out there and there is community interest then I could turn this into a library at some point.