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