A colleague is trying to expand the subset of SVG that haxe supports. A sticking point is how to approximate SVG's elliptical arcs with a sequence of quadratic Bezier curves. If you have a flair for numerical methods and would like to offer some help, please get in touch: the pertinent part of the SVG spec is at: http://www.w3.org/TR/SVG11/paths.html#PathDataEllipticalArcCommands