amos-tool/lib/dom/canvasTools.js

amos ui tool

"use strict";

var drawPolygon = function(t, o) {
  var a = o && o.x || 0, l = o && o.y || 0, e = o && o.num || 3, r = o && o.r || 100, i = o && o.width || 5, n = o && o.strokeStyle, h = o && o.fillStyle;
  t.beginPath();
  var s = a + r * Math.cos(2 * Math.PI * 0 / e), P = l + r * Math.sin(2 * Math.PI * 0 / e);
  t.moveTo(s, P);
  for (var y = 1; y <= e; y++) {
    var M = a + r * Math.cos(2 * Math.PI * y / e), d = l + r * Math.sin(2 * Math.PI * y / e);
    t.lineTo(M, d);
  }
  t.closePath(), n && (t.strokeStyle = n, t.lineWidth = i, t.lineJoin = "round", t.stroke()), 
  h && (t.fillStyle = h, t.fill());
};

module.exports = {
  drawPolygon: drawPolygon
};