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React Native Super Cluster

This module wraps AirBnB's react-native-maps and uses MapBox's SuperCluster as clustering engine.

Example

See the showcase application.

Rationale

This module wants to provide a stable and performing solution for maps clustering in React Native. In particular, our efforts are focused on integrating SuperCluster methods into React's state/lifecycle events, ensuring stability, compatibility and great performance.

Install

npm i --save react-native-maps-super-cluster

Usage

NOTES:

  • the prop key of the markers rendered through renderMarker should not be left up to React. Instead, we strongly suggest to use an id in order the have unique keys while still taking advantage of React's recycling
  • ClusteredMapView supports usual React children. Those children won't be affected by clustering, i.e. the behavior for those children is exactly the same as wrapping them around an AirBnB's react-native-maps instance
import React, { Component } from 'react'
import { Marker } from 'react-native-maps'
import ClusteredMapView from 'react-native-maps-super-cluster'

const INIT_REGION = {
  latitude: 41.8962667,
  longitude: 11.3340056,
  latitudeDelta: 12,
  longitudeDelta: 12
}

export default class MyClusteredMapView extends Component {
  
  ...

  renderMarker = (data) => <Marker key={data.id || Math.random()} coordinate={data.location} />

  ...

  render() {
    return (
      <ClusteredMapView
        style={{flex: 1}}
        data={this.state.data}
        initialRegion={INIT_REGION}
        renderMarker={this.renderMarker}
        {/* cluster text */}
        textStyle={{ color: '#65bc46' }}
        {/* cluster container */}
        containerStyle={{backgroundColor: 'white', borderColor: '#65bc46'}} />
    )
  }
}

Props Definition

Name Type Required Default Note
width Number false window width map's width
height Number false window height map's height
clusterInitialDimension Number false 30 cluster view base dimension in dpi/ppi. Clusters size grows with amount of clustered markers
data Array true undefined Objects must have an attribute representing a GeoPoint, i.e. { latitude: x, longitude: y }
onExplode Function false undefined TODO
onImplode Function false undefined TODO
onClusterPress Function false Add additional behaviours to the clusterPress handler. (onClusterPress automatically moves the map to the cluster region and zoomes on the cluster explode zoom level)
renderMarker Function false undefined Must return a react-native-maps' Marker component
animateClusters Bool false true Animate imploding/exploding of clusters' markers and clusters size change. Works only on iOS.
textStyle Object false NovaLab Brand colors Style of the Text component used for clusters counters
containerStyle Object false NovaLab Brand colors Style of the clusters View

TODO

features

  • dynamically enable/disable clustering
  • trigger events on clusters implode/explode

performance

  • enhance isZoomLevelChanged math

Contributors

License

See our License for more information.