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Direktori : /home/opti/workflow/src/public/app-assets/vendors/js/charts/echarts/zrender/graphic/shape/ |
Current File : /home/opti/workflow/src/public/app-assets/vendors/js/charts/echarts/zrender/graphic/shape/Isogon.js |
/** * 正多边形 * @module zrender/shape/Isogon * @author sushuang (宿爽, sushuang0322@gmail.com) */ define(function (require) { 'use strict'; var PI = Math.PI; var sin = Math.sin; var cos = Math.cos; return require('../Path').extend({ type: 'isogon', shape: { x: 0, y: 0, r: 0, n: 0 }, buildPath: function (ctx, shape) { var n = shape.n; if (!n || n < 2) { return; } var x = shape.x; var y = shape.y; var r = shape.r; var dStep = 2 * PI / n; var deg = -PI / 2; ctx.moveTo(x + r * cos(deg), y + r * sin(deg)); for (var i = 0, end = n - 1; i < end; i++) { deg += dStep; ctx.lineTo(x + r * cos(deg), y + r * sin(deg)); } ctx.closePath(); return; } }); });