/** * 圆环 * @module zrender/graphic/shape/Ring */ import Path from '../Path'; export default Path.extend({ type: 'ring', shape: { cx: 0, cy: 0, r: 0, r0: 0 }, buildPath: function (ctx, shape) { var x = shape.cx; var y = shape.cy; var PI2 = Math.PI * 2; ctx.moveTo(x + shape.r, y); ctx.arc(x, y, shape.r, 0, PI2, false); ctx.moveTo(x + shape.r0, y); ctx.arc(x, y, shape.r0, 0, PI2, true); } });