[fix]mapbox端经纬网去掉proj4 review by songym

Author: luoxiao-supermap

src/mapboxgl/overlay/GraticuleLayer.js

@@ -11,8 +11,6 @@
 
 import { getWrapNum, conversionDegree } from '@supermap/iclient-common';
 import mapboxgl from 'mapbox-gl';
-import proj4 from 'proj4';
-
 /**
  * @class mapboxgl.supermap.GraticuleLayer
  * @category Visualization GraticuleLayer
@@ -84,10 +82,10 @@ const defaultOptions = {
  latLabelStyle: defaultTextStyle
 };
 export class GraticuleLayer {
- constructor(map, options) {
+ constructor(map, options, sourceId = 'sm-graticule-layer') {
  this.map = map;
  this.canvasId = 'sm-graticule-canvasid';
- this.sourceId = 'sm-graticule-layer';
+ this.sourceId = sourceId;
  this.options = options;
  this.resetEvent = this._reset.bind(this);
  this.styleDataEevent = this._setLayerTop.bind(this);
@@ -226,13 +224,8 @@ export class GraticuleLayer {
  const crs = (map.getCRS && map.getCRS()) || {};
  let { epsgCode, extent: crsExtent } = crs;
  if (!crsExtent) {
- epsgCode = 'EPSG:3857';
- crsExtent = [-20037508.3427892, -20037508.3427892, 20037508.3427892, 20037508.3427892];
+ crsExtent = [-180, -85.05119, 180, 85.05119];
  }
- crsExtent = [
- ...this._unproject([crsExtent[0], crsExtent[1]], epsgCode),
- ...this._unproject([crsExtent[2], crsExtent[3]], epsgCode)
- ];
  if (!extent || extent.length === 0) {
  return crsExtent;
  }
@@ -247,18 +240,6 @@ export class GraticuleLayer {
  return extent;
  }
 
- _unproject(point, epsgCode) {
- if (epsgCode === 'EPSG:4326') {
- return point;
- }
- const coor = proj4(epsgCode, 'EPSG:4326', point);
- const proj = proj4.defs(epsgCode);
- if (proj.axis && proj.axis.indexOf('ne') === 0) {
- coor.reverse();
- }
- return coor;
- }
-
  _updateRotate() {
  const canvas = this.canvas;
  const sw = this.map.unproject([0, canvas.height]);