GeoLocate

using browser environmentnagigatorofgetlocationMethod, use the browser to turn on the location sensing capability to obtain the longitude and latitude of the current user.

illustrate

Example

Notice:

• When using this capability, the user will be required to authenticate the browser to enable location awareness.
• The coordinates currently obtained by the browser areWGS84The geographical coordinate system will be biased when used on the Gaode map, so it can be usedtransformConfigure the coordinate system conversion.

use

import { Scene, GeoLocate } from '@antv/l7';
import gcoord from 'gcoord';

const scene = new Scene({
  // ...
});

scene.on('loaded', () => {
  const geoLocate = new GeoLocate({
    transform: (position) => {
      //Convert the coordinates obtained based on the WGS84 geographical coordinate system into the GCJ02 coordinate system
      return gcoord.transform(position, gcoord.WGS84, gcoord.GCJ02);
    },
  });
  scene.addControl(geoLocate);
});

Configuration

Position

export type Position =
  | 'topleft' // ↖ upper left corner, vertical arrangement
  | 'lefttop' // ↖ Upper left corner, arranged horizontally
  | 'topright' // ↗ Upper right corner, vertical arrangement
  | 'righttop' // ↗ Upper right corner, arranged horizontally
  | 'bottomleft' // ↙ lower left corner, arranged vertically
  | 'leftbottom' // ↙ lower left corner, arranged horizontally
  | 'bottomright' // ↘ Lower right corner, arranged vertically
  | 'rightbottom' // ↘ Lower right corner, arranged horizontally
  | 'topcenter' // ↑ top center, arranged horizontally
  | 'bottomcenter' // ↓ bottom center, arranged horizontally
  | 'leftcenter' // ← left center, arranged vertically
  | 'rightcenter' // → middle right, arranged vertically
  | Element; // Pass in DOM as the container of the current control

method

event