I can't help but feel that there's some redundancy between this and CSS transformations. This is basically some kind of affine transformation of the contents of an element with additionally clipping everything that falls outside of the original screen extent of that element. This shouldn't even need an additional element. Such a thing wasn't previously possible? I'm no HTML/CSS expert but I'd be disappointed if it weren't, seeing as clipping your drawing by a shape (commonly rectangular) has been a big thing in graphical programming for quite some time.