@siposdani87/expo-maps-polygon-editor

This multi polygon editor written in TypeScript for the React Native Maps component. This component allows you to select, create, or modify areas on Apple Maps and Google Maps. You can edit multiple polygons at the same time.

Getting Started

Installing

npm install @siposdani87/expo-maps-polygon-editor

Basic Usage

Check example directory for more samples and options.

import { PolygonEditor, getRandomPolygonColors, PolygonEditorRef, MapPolygonExtendedProps } from '@siposdani87/expo-maps-polygon-editor';

const [strokeColor, fillColor] = getRandomPolygonColors();
const polygons: MapPolygonExtendedProps[] = [{
    key: 'key_0',
    coordinates: [
        {
            latitude: 47.64623435880296,
            longitude: 17.488861083984375,
        },
        {
            latitude: 47.69155620579073,
            longitude: 17.514411988020868,
        },
        {
            latitude: 47.65998584885824,
            longitude: 17.54299213146342,
        },
    ],
    strokeWidth: 2,
    strokeColor,
    fillColor,
}];

export const PolygonEditorComponents = () => {
    const polygonEditorRef = useRef<PolygonEditorRef>(null);

    return (
        <MapView
            style={styles.mapContainer}
        >
            <PolygonEditor
                ref={polygonEditorRef}
                polygons={polygons}
            />
        </MapView>
    );
};

const styles = StyleSheet.create({
    mapContainer: {
        ...StyleSheet.absoluteFillObject,
    },
});

Props

PolygonEditor

| Prop | Type | Description | | ----------------- | --------------------------------------------------------- | ----------- | | polygons * | MapPolygonExtendedProps[] | Input polygons array | | onPolygonChange | (index: number, polygon: MapPolygonExtendedProps) => void | change polygon callback | | onPolygonCreate | (polygon: MapPolygonExtendedProps) => void | create polygon callback | | onPolygonRemove | (index: number) => void | Delete polygon callback | | onPolygonSelect | (index: number, polygon: MapPolygonExtendedProps) => void | Select polygon callback | | onPolygonUnselect | (index: number, polygon: MapPolygonExtendedProps) => void | Deselect polygon callback | | disabled | boolean | Disable editing on component |

Preview

Bugs or Requests

If you encounter any problems feel free to open an issue. If you feel the library is missing a feature, please raise a ticket. Pull request are also welcome.

Developer

Dániel Sipos

Sponsors

This project is generously supported by TrophyMap, I18Nature, and several other amazing organizations.