| /** |
| * 圆弧 |
| * @module zrender/graphic/shape/Arc |
| */ |
| import Path from '../Path'; |
| export default Path.extend({ |
| type: 'arc', |
| shape: { |
| cx: 0, |
| cy: 0, |
| r: 0, |
| startAngle: 0, |
| endAngle: Math.PI * 2, |
| clockwise: true |
| }, |
| style: { |
| stroke: '#000', |
| fill: null |
| }, |
| buildPath: function (ctx, shape) { |
| var x = shape.cx; |
| var y = shape.cy; |
| var r = Math.max(shape.r, 0); |
| var startAngle = shape.startAngle; |
| var endAngle = shape.endAngle; |
| var clockwise = shape.clockwise; |
| var unitX = Math.cos(startAngle); |
| var unitY = Math.sin(startAngle); |
| ctx.moveTo(unitX * r + x, unitY * r + y); |
| ctx.arc(x, y, r, startAngle, endAngle, !clockwise); |
| } |
| }); |