var dataUtil = require("../../utils/data_structure_util");
var Line = require("./Line");
var _constants = require("../../utils/constants");
var mathSin = _constants.mathSin;
var mathCos = _constants.mathCos;
function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
/**
* @class qrenderer.graphic.line.Trochold
* Trochold.
*
*
* 内外旋轮曲线。
* @docauthor 大漠穷秋 <damoqiongqiu@126.com>
*/
var Trochold =
/*#__PURE__*/
function (_Line) {
_inherits(Trochold, _Line);
/**
* @method constructor Trochold
* @param {Object} options
*/
function Trochold(options) {
var _this;
_classCallCheck(this, Trochold);
_this = _possibleConstructorReturn(this, _getPrototypeOf(Trochold).call(this, dataUtil.merge({
shape: {
cx: 0,
cy: 0,
r: 0,
r0: 0,
d: 0,
location: 'out'
},
style: {
stroke: '#000',
fill: null
}
}, options, true)));
/**
* @property {String} type
*/
_this.type = 'trochoid';
return _this;
}
/**
* @method buildPath
* Build the path of current line, the data structure is like the path attribute in SVG.
*
*
* 构建当前线条的路径,数据结构类似 SVG 中的 path 属性。
* @param {Object} ctx
* @param {String} shape
*/
_createClass(Trochold, [{
key: "buildPath",
value: function buildPath(ctx, shape) {
var x1;
var y1;
var x2;
var y2;
var R = shape.r;
var r = shape.r0;
var d = shape.d;
var offsetX = shape.cx;
var offsetY = shape.cy;
var delta = shape.location === 'out' ? 1 : -1;
if (shape.location && R <= r) {
return;
}
var num = 0;
var i = 1;
var theta;
x1 = (R + delta * r) * mathCos(0) - delta * d * mathCos(0) + offsetX;
y1 = (R + delta * r) * mathSin(0) - d * mathSin(0) + offsetY;
ctx.moveTo(x1, y1); // 计算结束时的i
do {
num++;
} while (r * num % (R + delta * r) !== 0);
do {
theta = Math.PI / 180 * i;
x2 = (R + delta * r) * mathCos(theta) - delta * d * mathCos((R / r + delta) * theta) + offsetX;
y2 = (R + delta * r) * mathSin(theta) - d * mathSin((R / r + delta) * theta) + offsetY;
ctx.lineTo(x2, y2);
i++;
} while (i <= r * num / (R + delta * r) * 360);
}
}]);
return Trochold;
}(Line);
module.exports = Trochold;