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@expomap/mapbox-gl-draw-snapping-polygon-mode

v1.0.1

Published

Modo personalizado para o Mapbox GL Draw que adiciona a funcionalidade de desenhar polígonos com snaping

Downloads

116

Readme

mapbox-gl-draw-snapping-polygon-mode

Modo personalizado para o Mapbox GL Draw que adiciona a funcionalidade de desenhar polígonos com snaping

Esse modo é uma melhoria do já conhecido snap_polygon do mhsattarian/mapbox-gl-draw-snap-mode, adicionando guias para vértices do polígono que você está desenhando atualmente, o que deixa mais fácil a criação de ângulos retos em um polígono.

Instalação

npm i @expomap/mapbox-gl-draw-snapping-polygon-mode

Uso

Veja a demo abaixo para entender sobre o uso do módulo

  • Importe os MapboxGL e o MapboxGLDraw
import { Map } from 'mapbox-gl'
import mapboxGlDraw from '@mapbox/mapbox-gl-draw'
  • Importe o modo DrawPolygonSnap
import DrawPolygonSnap, { DrawPolygonSnapModeStyles } from '@expomap/mapbox-gl-draw-snapping-polygon-mode';
  • Crie o mapa
var map = new Map({
    container: 'map',
    style: 'mapbox://styles/mapbox/streets-v9',
    zoom: 3.54883,
    center: [-56, -16],
    bearing: 0,
    accessToken: [SUA_CHAVE]
});
  • Crie o objeto Draw adicionando o modo DrawPolygonSnap

Você precisará configurar o draw com userProperties: true e adicionar os estilos personalizados com styles: DrawPolygonSnapModeStyles para as guias aparecerem.

Se na sua aplicação, você já está usando estilos personalizados, você precisará mesclar ambos estilos manualmente

var modes = mapboxGlDraw.modes;

modes.draw_polygon_snap = DrawPolygonSnap;

var draw = new mapboxGlDraw({
    modes: modes,
    userProperties: true,
    styles: DrawPolygonSnapModeStyles
});

map.addControl(draw);
  • Ativar o modo
draw.changeMode('draw_polygon_snap');

Demo

HTML

<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Mapbox GL Draw Snapping Polygon</title>
  </head>
  <body>
    <div id="map"></div>

    <style>
        body { margin:0; padding:0; }
        #map { position:absolute; top:0; bottom:0; width:100%; }
    </style>
  </body>
</html>

Js

import { Map } from 'mapbox-gl'
import mapboxGlDraw from '@mapbox/mapbox-gl-draw'
import DrawPolygonSnap, { DrawPolygonSnapModeStyles } from '@expomap/mapbox-gl-draw-snapping-polygon-mode';

var map = new Map({
    container: 'map',
    style: 'mapbox://styles/mapbox/streets-v9',
    zoom: 3.54883,
    center: [-56, -16],
    bearing: 0,
    accessToken: [SUA_CHAVE]
});

var modes = mapboxGlDraw.modes;

modes.draw_polygon_snap = DrawPolygonSnap;

var draw = new mapboxGlDraw({
    modes: modes,
    userProperties: true,
    styles: DrawPolygonSnapModeStyles
});

map.addControl(draw);

draw.changeMode('draw_polygon_snap');

Você pode ver essa demo no ar nesse link

NPM

https://www.npmjs.com/package/@expomap/mapbox-gl-draw-snapping-polygon-mode