Re: [touch-events] rotationAngle range of 0-90 seems counterintuitive - add a diagram? (#53)

not sure that "represented by a unique tuple" means anything to mere mortals though, without further explanation. in particular, things like the "flipping" of what radiusX and radiusY when you cross over the 12 o'clock mark for instance (and, although i've not tested, presumably the 3, 6 and 9 o'clock mark as well)...

or, we simply keep it cryptic for now in the assumption that not many devices will actually support it, so it'll become more of an irrelevant curiosity/oddity...

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