Skip to content

Latest commit

 

History

History
68 lines (44 loc) · 2.53 KB

map-view.md

File metadata and controls

68 lines (44 loc) · 2.53 KB
Raw

MapView Class

The [MapView] class is a subclass of View. This viewport creates a camera that looks at a geospatial location on a map from a certain direction. The behavior of MapView is generally modeled after that of Mapbox GL JS.

It's recommended that you read the Views and Projections guide before using this class.

Constructor

import {MapView} from '@deck.gl/core';
const view = new MapView({id, ...});

MapView takes the same parameters as the View superclass constructor, plus the following:

  • repeat (Boolean) - Whether to render multiple copies of the map at low zoom levels. Default false.

View State

To render, MapView needs to be used together with a viewState with the following parameters:

  • longitude (Number) - longitude at the map center
  • latitude (Number) - latitude at the map center
  • zoom (Number) - zoom level
  • pitch (Number, optional) - pitch angle in degrees. Default 0 (top-down).
  • bearing (Number, optional) - bearing angle in degrees. Default 0 (north).
  • maxZoom (Number, optional) - max zoom level. Default 20.
  • minZoom (Number, optional) - min zoom level. Default 0.
  • maxPitch (Number, optional) - max pitch angle. Default 60.
  • minPitch (Number, optional) - min pitch angle. Default 0.

The default controller of a MapView is MapController.

MapController

By default, MapView uses the MapController to handle interactivity. To enable the controller, use:

const view = new MapView({id: 'base-map', controller: true});

MapController supports the following interactions:

  • dragPan: Drag to pan
  • dragRotate: Drag while pressing shift/ctrl to rotate
  • scrollZoom: Mouse wheel to zoom
  • doubleClickZoom: Double click to zoom in, with shift/ctrl down to zoom out
  • touchZoom: Pinch zoom
  • touchRotate: Multi-touch rotate
  • keyboard: Keyboard (arrow keys to pan, arrow keys with shift/ctrl down to rotate, +/- to zoom)

You can further customize its behavior by extending the class:

import {MapController} from '@deck.gl/core';

class MyMapController extends MapController {}

const view = new MapView({id: 'base-map', controller: MyMapController});

See the documentation of Controller for implementation details.

Source

modules/core/src/views/map-view.js