| /** |
| * 玫瑰线 |
| * @module zrender/graphic/shape/Rose |
| */ |
| import Path from '../Path'; |
| var sin = Math.sin; |
| var cos = Math.cos; |
| var radian = Math.PI / 180; |
| export default Path.extend({ |
| type: 'rose', |
| shape: { |
| cx: 0, |
| cy: 0, |
| r: [], |
| k: 0, |
| n: 1 |
| }, |
| style: { |
| stroke: '#000', |
| fill: null |
| }, |
| buildPath: function (ctx, shape) { |
| var x; |
| var y; |
| var R = shape.r; |
| var r; |
| var k = shape.k; |
| var n = shape.n; |
| var x0 = shape.cx; |
| var y0 = shape.cy; |
| ctx.moveTo(x0, y0); |
| |
| for (var i = 0, len = R.length; i < len; i++) { |
| r = R[i]; |
| |
| for (var j = 0; j <= 360 * n; j++) { |
| x = r * sin(k / n * j % 360 * radian) * cos(j * radian) + x0; |
| y = r * sin(k / n * j % 360 * radian) * sin(j * radian) + y0; |
| ctx.lineTo(x, y); |
| } |
| } |
| } |
| }); |