aaac7fed
 liuqimichale
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/**
* 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);
}
}
}
});
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