turf - A modular geospatial engine written in JavaScript

•    Javascript

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Turf is a JavaScript library for spatial analysis. It includes traditional spatial operations, helper functions for creating GeoJSON data, and data classification and statistics tools. Turf can be added to your website as a client-side plugin, or you can run Turf server-side with Node.js (see below).Download the minified file, and include it in a script tag. This will expose a global variable named turf.

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react-google-maps - React.js Google Maps integration component

•    Javascript

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The changelog is automatically generated via standard-version and can be found in project root as well as npm tarball. Please, be noted, no one, I mean, no one, is obligated to help you in ANY means. Your time is valuable, so does our contributors. Don't waste our time posting questions like “how do I do X with React-Google-Maps” and “my code doesn't work”. This is not the primary purpose of the issue tracker. Don't abuse.

react google-maps-javascript-api react-styleguidist google map react-component recompose hoc addons/infobox addons/markerclusterer circle directionsrenderer drawing/drawingmanager fusiontableslayer googlemap infowindow kmllayer marker overlayview places/searchbox polygon polyline rectangle streetviewpanorama trafficlayer visualization/heatmaplayer withgooglemap withscriptjs

earcut - The fastest and smallest JavaScript polygon triangulation library for your WebGL apps

•    Javascript

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The fastest and smallest JavaScript polygon triangulation library. 2.5KB gzipped.The library implements a modified ear slicing algorithm, optimized by z-order curve hashing and extended to handle holes, twisted polygons, degeneracies and self-intersections in a way that doesn't guarantee correctness of triangulation, but attempts to always produce acceptable results for practical data.

triangulation tessellation polygon algorithm computational-geometry

maker.js - Library for creating 2D vector drawings for CNC and laser cutter machines.

•    Javascript

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Maker.js, a Microsoft Garage project, is a JavaScript library for creating and sharing modular line drawings for CNC and laser cutters.

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point-in-polygon - determine if a point is inside a polygon

•    Javascript

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Determine if a point is inside of a polygon.This module casts a ray from the inquiry point and counts intersections, based on this algorithm.

point polygon inside

Leaflet

•    Javascript

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Zoopla inspired freehand polygon creation using Leaflet.js.

maps polygon markers shape zoopla geospatial draw leaflet freedraw drawing freehand

jquery-canvas-area-draw

•    JQuery

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Canvas based ImageMap polygon editing textarea/input replacement for jQuery

jquery-plugin canvas img image map polygon poly input

d3-polygon - Geometric operations for two-dimensional polygons.

•    Javascript

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Operations for two-dimensional polygons.

d3 d3-module polygon hull geometry graphics

LibTessDotNet - C# port of the famous GLU Tessellator - prebuilt binaries now available in "releases" tab

•    CSharp

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Provide a robust and fast tessellator (polygons with N vertices in the output) for .NET, also does triangulation.SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) More information in LICENSE.txt.

triangulation polygon c-sharp tessellation unity3d

chaikin-smooth - Chaikin's smoothing algorithm for 2D polylines

•    Javascript

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Chaikin's smoothing algorithm for 2D polylines.Performs the smoothing algorithm on the specified path, returning a list populated with the additional smoothed points. If the input path has a length of <= 2, the result will be a new array with the same points as the input.

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polygon.js - maniplate polygons in 2d space

•    Javascript

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utility for working with polygons (arrays of vec2s)

polygon vec2 geometry 2d

2d-polygon-boolean - perform boolean operations on arbitrary polygons in 2d

•    Javascript

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perform boolean operations on arbitrary polygons in 2d

polygon geometry math 2d clipping

simplify-geojson - apply the ramer-douglas-peucker line simplification to geojson features or feature collections in JS or on the CLI

•    Javascript

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Apply Ramer–Douglas–Peucker line simplification to GeoJSON features or feature collections in JS or on the CLI.This module uses https://github.com/seabre/simplify-geometry for the simplification and wraps it in a interface for easily simplifying GeoJSON.

ramer-douglas-peucker feature featurecollection geojson line linestring multilinestring multipolygon polygon simplification simplify

geojson-geometries-lookup - ⚡️ Fast geometry in geometry lookup for large GeoJSONs.

•    Javascript

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⚡️ Fast geometry in geometry lookup for large GeoJSONs.With this package you can perform the following operations (and more) on a given GeoJSON.

geojson lookup nodejs geojson-geometries-lookup point-lookup line-lookup polygon-lookup points-lookup lines-lookup polygons-lookup geojsons-lookup point line polygon geojsons points lines polygons intersection contains contain container containers contained

turf-inside - Checks to see if a point is inside of a polygon.

•    Javascript

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Takes a Point and a Polygon or MultiPolygon and determines if the point resides inside the polygon. The polygon can be convex or concave. The function accounts for holes.Requires nodejs.

geojson polygon point inside bin gis

osrm-isochrone - Generate drivetime isochrones from OpenStreetMap data using OSRM

•    Javascript

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Generate drive-time isochrones from OpenStreetMap data using OSRM.The output will be in GeoJSON format.

drivetime polygon osrm

polyclip - Martinez polygon boolean operations (a work in progress)

•    HTML

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Crazy fast polygon boolean operations in JS using Martinez algorithm. A work in progress.

polygon boolean geometry clipping union intersection

polysnap - A work in progress polygon operations library with integer snap-rounding

•    HTML

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A work in progress JavaScript polygon operations library with integer snap rounding.

polygon snap-round computational-geometry algorithm library robust fast

leaflet-pip - point in polygon intersections for leaflet

•    Javascript

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A Leaflet-friendly API for point in polygon operations, using substack's point in polygon library.An array of polygons in which the given point resides, an empty array if there are none. The polygons are returned as direct sublayers, so they can include MultiPolygons. You can call pointInLayer again on those if you want the sub-polygon result.

leaflet plugin point in polygon geo geographical

lineclip - A very fast JavaScript polyline and polygon clipping library

•    Javascript

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A very fast JavaScript library for clipping polylines and polygons by a bounding box.Returns an array of clipped lines.

algorithm line polyline polygon geometry clip geo cohen-sutherland