@visx/vendor/vendor-cjs/d3-geo/src/path/measure.js

vendored packages for visx

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _index = require("../../../../vendor-cjs/d3-array/src/index.js");
var _math = require("../math.js");
var _noop = _interopRequireDefault(require("../noop.js"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var lengthSum = new _index.Adder(),
  lengthRing,
  x00,
  y00,
  x0,
  y0;
var lengthStream = {
  point: _noop.default,
  lineStart: function () {
    lengthStream.point = lengthPointFirst;
  },
  lineEnd: function () {
    if (lengthRing) lengthPoint(x00, y00);
    lengthStream.point = _noop.default;
  },
  polygonStart: function () {
    lengthRing = true;
  },
  polygonEnd: function () {
    lengthRing = null;
  },
  result: function () {
    var length = +lengthSum;
    lengthSum = new _index.Adder();
    return length;
  }
};
function lengthPointFirst(x, y) {
  lengthStream.point = lengthPoint;
  x00 = x0 = x, y00 = y0 = y;
}
function lengthPoint(x, y) {
  x0 -= x, y0 -= y;
  lengthSum.add((0, _math.sqrt)(x0 * x0 + y0 * y0));
  x0 = x, y0 = y;
}
var _default = lengthStream;
exports.default = _default;