摘要： SVG PATH 的d参数较多，也比较复杂。MovetoLinetoCurvetoArctoClosePath这里只打算记录下 Arcto 参数.（https://developer.mozilla.org/en-US/docs/SVG/Attribute/d）Sometimes it is easier to describe a path as an elliptical curve rather than a Bezier curve. To this end, Arcto commands are supported in paths. The center of the arc is 阅读全文