Elight.WebUI/wwwroot/Content/echarts/extension/bmap.js

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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('echarts')) :
  typeof define === 'function' && define.amd ? define(['exports', 'echarts'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.bmap = {}, global.echarts));
}(this, (function (exports, echarts) { 'use strict';

  function BMapCoordSys(bmap, api) {
    this._bmap = bmap;
    this.dimensions = ['lng', 'lat'];
    this._mapOffset = [0, 0];
    this._api = api;
    this._projection = new BMap.MercatorProjection();
  }

  BMapCoordSys.prototype.dimensions = ['lng', 'lat'];

  BMapCoordSys.prototype.setZoom = function (zoom) {
    this._zoom = zoom;
  };

  BMapCoordSys.prototype.setCenter = function (center) {
    this._center = this._projection.lngLatToPoint(new BMap.Point(center[0], center[1]));
  };

  BMapCoordSys.prototype.setMapOffset = function (mapOffset) {
    this._mapOffset = mapOffset;
  };

  BMapCoordSys.prototype.getBMap = function () {
    return this._bmap;
  };

  BMapCoordSys.prototype.dataToPoint = function (data) {
    var point = new BMap.Point(data[0], data[1]); // TODO mercator projection is toooooooo slow
    // let mercatorPoint = this._projection.lngLatToPoint(point);
    // let width = this._api.getZr().getWidth();
    // let height = this._api.getZr().getHeight();
    // let divider = Math.pow(2, 18 - 10);
    // return [
    //     Math.round((mercatorPoint.x - this._center.x) / divider + width / 2),