JSPM

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Martinez polygon clipping algorithm, does boolean operation on polygons (multipolygons, polygons with holes etc): intersection, union, difference, xor

A fast polyline and polygon clipping library.

Apply boolean polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Greiner-Hormann clipping algorithm

Polygon and line clipping and offsetting library for Javascript / Typescript - a port of Angus Johnson's clipper to WebAssembly / Asm.JS

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

2D polygon clipping / offsetting (Sutherland-Hodgeman, Grainer-Hormann)

Clipping and geometric operations for spherical polygons.

WebAssembly port of the Clipper2 library for polygon clipping and offsetting

Boolean operations on polygons (union, intersection, difference, xor)

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Greiner-Hormann clipping algorithm; Typescript port.

Node binding to C++ clipping library

Operations for two-dimensional polygons.

turf bbox module

turf boolean-point-in-polygon module

turf area module

turf unkink-polygon module

turf rewind module

Polygon offsetting algorithm, aimed for use with leaflet

determine if a point is inside a polygon with a ray intersection counting algorithm

Apply boolean polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

turf buffer module

turf points-within-polygon module

a JavaScript library for performing geospatial operations with GeoJSON

turf circle module

Fill a polygon with lines

turf tesselate module

perform boolean operations on arbitrary polygons in 2d

turf mask module

turf polygon-to-line module

turf envelope module

turf point-on-feature module

turf tag module

turf polygon tangents module

A point in polygon based on the paper Optimal Reliable Point-in-Polygon Test and Differential Coding Boolean Operations on Polygons

Boolean operations on polygons (union, intersection, difference, xor)

turf line-to-polygon module

turf dissolve module

turf polygon smooth module

A very simple script to compute all self-intersections in a GeoJSON polygon.

turf boolean-concave module

Polygon/polyline processing utilities

turf point-to-polygon-distance module

A JS library for finding optimal label position inside a polygon

A port of Clipper2(C#) to js/ts.

A 2D constrained Delaunay triangulation library

Javascript library for 2d geometry

Conversion and preparation of thi.ng/geom shapes & shape groups to/from AxiDraw pen plotter draw commands

HTML5 inspired canvas that can be rendered to PNG with no native dependencies.

Exactly test if a point is inside, outside or on the boundary of a polygon

A Leaflet Plugin For Editing Geometry Layers in Leaflet 1.0

Index for matching points against a set of GeoJSON polygons

Reference Implementation of the Dufour-Peyton Intersection Algorithm. Calculates the Intersections of Arbitrary Polygons with a Geospatial Raster.

Industrial strength point in polygon test

Triangulates a complex polygon

Splits a convex polygon by a plane

Convert a planar graph to a collection of nest polylines

Apply boolean Polygon clipping operations (intersection, union, difference, xor) to your Polygons & MultiPolygons.

Constrained Delaunay Triangulation in 2D

Computes the closest point to a polytope in arbitrary dimensions

clip a polygon with another

Remove self intersections, t-junctions and duplicate edges/vertices from a planar straight line graph

Simplifies a planar graph

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

Headless 2D shape drawing, filling & rasterization for arbitrary targets/purposes (no canvas required)

A library of intersection algorithms covering all SVG shape types

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

The Maps component is used to visualize the geographical data and represent the statistical data of a particular geographical area on earth with user interactivity, and provides various customizing options

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

turf extent module

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

A library of intersection algorithms covering all SVG shape types

Takes a complex (i.e. self-intersecting) GeoJSON polygon, and breaks it down into its composite simple, non-self-intersecting one-ring polygons.

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

Apply Ramer-Douglas-Peucker line simplification to GeoJSON features or feature collections in JS or on the CLI

Convex decomposition for 2D polygons

Polygon tesselation library, ported from SGI's GLU implementation.

Fast point-in-polygon intersection for large numbers of polygons.

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

Dissolve contiguous GeoJSON LineStrings and Polygons into single units.

Receives a Coordinate, a Radius and a Number of edges and aproximates a circle by creating a polygon that fills its area

Drag functionality for Leaflet vector layers

Convex decomposition for 2D polygons

Photo Sphere Viewer plugin to display various markers/hotspots on the viewer.

Javascript implementation of GEOS's Polygonize function

Fast geometry in geometry lookup for large GeoJSONs

turf polygon module

OSM tags indicate if a closed way should be treated as a polygon or linestring

Extract elementary geometries from a geojson inheriting properties.

Split a polygon using a polyline.

Baidu Map map-polygon Components for React.

Schema definitions for GeoJSON types for use with Mongoose JS

API to interact with Helio Finances program on EVM chains.

Methods for spatial operations on (Multi)Polygons

Small, no dependency library for offsetting polygons. Heavily based on this [CodePen](https://codepen.io/HansMuller/pen/lDfzt) by Hans Muller.

Return the centroid for a given convex polygon.

Allow to drag Leaflet path

SDK for EVM chains, used in conjunction with @wormhole-foundation/sdk

Coordinate, linear, and area measure tool for Leaflet maps

Minimum bounding rectangle implementation in JavaScript. Uses `concaveman` and `mathjs` as dependencies.

Everstake Wallet SDK for Javascript

utility for working with polygons (arrays of vec2s)

Functional, polymorphic API for 2D geometry types & SVG generation

Zoopla inspired freehand polygon creation using Leaflet.js.

This library may not be fast, but it is robust. Robust in the fact that it will find all of the self-intersections in a polygon - minus of course shared endpoints.

compute the area of a 2d polygon

Reverse geocoding to determine the location where it is contained (continent, country, region and state) from the latitude and longitude specified. This module also has tools to get lists of continents, country groupings, countries, regions and states in

Compute distance from a point to an arbitrary shaped polygon, line, or point

Calculate the area of a simple polygon

point in polygon searches for leaflet

Small, typed, dependency free tool to round corners of 2d-polygon provided by an array of { x, y } points.

A pure javascript implementation of the QuickHull algorithm for finding the smallest polygon enclosing a set of points

CLI tool for Elephant Network

Determine if an x y coordinate exists in a polygon.

Mappls Maps official hybrid map SDK for angular & reactJS NPM

Check if point is inside polygon

Any dimensional Minkowski sums of convex polytopes

a lightweight yet faster osm (either in xml or in json formats) to geojson convertor - 4x faster than xmldom + osmtogeojson in most situations - implemented in pure JavaScript without any 3rd party dependency

JavaScript tool for working with polygons. It uses several basic principles to be super simple and super universal.

For given polygon finds if any of segments intersect with each other

Drag feature functionality for Leaflet.draw

chaikin's smoothing algorithm for 2D lines

Package for encoding / decoding images, transforming images, applying filters, drawing primitives on images on the client side (no need for server Node.js)

Draw lines and polygons with canvas. Save and load path to canvas.

Polygon tools

Polygon convex partitioning and triangulation.

2D / 3D closest point / proximity helpers

Create N number of random points inside of a polygon

Check if two polygons overlap

Detect if a polygon has self intersecting lines

Yandex.MapKit and Yandex.Geocoder for react-native

Library to convert geohashes to multiple GeoJSON polygons or a single GeoJSON FeatureCollection

Turns SVG shapes (polygon, polyline, rect, g) into SVG paths. It can merge groups and apply transforms.

Fast 2D contour line extraction / generation

Ignite UI React Maps components.

Infinity Wallet connection SDK for DApp web3 connect integration

Customizable nD polyline interpolation, re-sampling, splitting & nearest point computation

2D polygon/polyline analysis & processing utilities

triangulates a series of 2D contours

Converts path commands for an SVG path to polygonal points.

Sveaflet = Svelte + Leaflet

Zoopla inspired freehand polygon creation using Leaflet.js.

Merge non continuous geojson polygons into multiples concave polygons based on polygons distance.

2D/3D convex polygon tessellators

Javascript library for 2d geometry

US and canada state polygon - state outline

Refactored Leaflet plugin for drawing freehand polygons, with support for mobile

Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams

高德地图 Polygon 编辑器。

TippingChain SDK - On-chain tipping with USDC payouts on ApeChain

This script finds all points where the polygons intersect each other.

高德地图 Polygon 编辑器。

构造多边形对象，通过 PolygonOptions 指定多边形样式。

Turns any GeoJSON shape into a list of geohashes

Return random position inside geoJson Polygon or MultiPolygon

高德地图 MouseTool 绘制工具。

Agentic commerce tools for Boson and Fermion protocols

2D line & convex polygon clipping (Liang-Barsky / Sutherland-Hodgeman)

Plugin that selects feature(s) by drawing an area on the map

Yandex MapKit for React Native

Interpolate circle to polygon for GeoJSON

Boolean operations on polygons

Polygon equidistant offset

2D Polygon math: boolean operations, triangulation, graphs, support for holes and non-convex shapes.

chaikin's smoothing algorithm for any dimension lines

Leaflet plugin to create polygon with circle, for touchscreen

turf bbox module

Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams

Ultralight JS for Ethereum

A module to check if a polygon self-intersects

Extracts the boundary of a binary 2D image

Computes a boolean combination of two planar graphs

Utilities to split GeoJSON geometries

TypeScript library for polygon boolean operations

An Ethereum indexer for monitoring and processing blockchain events. Works on all EVM chains.

Two dimensional vector math library for JavaScript. Built for performance in computation-heavy real-time engines without sacrificing usability. Supports tree shaking and dead code removal to avoid bloating client-side bundles. Zero dependencies.

a few point and polygon utils

Turns lineTo, moveTo, quadratic & bezier curves into discrete Vector2 points

triangulates a fontpath using poly2tri

sample the signed distance field of a polygon in 2d space

Wavefront OBJ parser (& exporter soon)

n-dimensional boids simulation with modular behavior system

Highly configurable, fuzzy line & polygon creation with presets and composable fill & stroke styles. Canvas & SVG support

IGES 5.3 serializer for (currently only) polygonal geometry, both open & closed

一个用于图片标注的javascript库，基于canvas，简单轻量，支持矩形、多边形、点、折线、圆形。

Coordinate, linear, and area measure tool for Leaflet maps

Ignite UI Angular map components.

<p align="center"> <br /> <a href="https://createweb3dapp.alchemy.com"> <img src=".github/images/cw3d-logo.png" width="200" alt=""/></a> <br /> </p>

Coordinate, linear, and area measure tool for Leaflet maps. Forked from LJA Engineering, Inc - GIS

Coordinate, linear, and area measure tool for Leaflet maps

Receives a Coordinate and ellipse properties and aproximates a ellipse by creating a polygon that fills its area

test if 2D convex polygon is clockwise

A 2D collision checker for modern JavaScript games.

Maps postal codes to polygons

Leaflet plugin for drawing bezier splines from polylines and polygons

The SVG Path Interpolator produces point data representing interpolated values within an SVG path.

Quickly find points in large sets of polygons

Yandex.MapKit and Yandex.Geocoder for react-native

CLI to create decentralized applications (dapps) using [Scaffold Alchemy](https://github.com/alchemyplatform/scaffold-alchemy).

Source for all GeoJSON boundaries on Earth

An algorithm to decompose polygons with holes from "A practical algorithm for decomposing polygonal domains into convex polygons by diagonals" by J Fernández

Polygon near-linear time triangulation (based on Seidel's algorithm) with ear clip for small cases. Handles degenerate cases of colinear edges and vertices touching edges.

一个用于图片标注的javascript库，基于canvas，简单轻量，支持矩形、多边形、点、折线、圆形、网格。

A library used to construct a visibility polygon for a set of line segments

Helper functions to convert BBoxes to multiple formats

Crypto wallet generator CLI tool

Zoopla inspired freehand polygon creation using Leaflet.js.

SDK for EVM chains, used in conjunction with @wormhole-foundation/connect-sdk

🧊 HODL Wallet - Fast CLI crypto wallet!

Native modules to determine if a location is within defined geographical boundaries using Google Geometry library

Converts polylines, wkts, wkbs, polygons, circles, rectangles, as well as standard geoJSON into geoJSON MultiPolygon Feature Objects. Converts wkb_list and FeatureCollection to arrays.

SDK for EVM chains, used in conjunction with @wormhole-foundation/connect-sdk

WebAssembly port of the Clipper2 library for polygon clipping and offsetting

Smoothing algorithm for 2D lines and polygons

Polygon - Everstake Wallet SDK

Everstake Wallet SDK for Javascript

javascript library that allows drawing a polygon shape over a Google Map and get it's coordinates

soundsright chain sdk

Fork of kittykatattack's bump library for PixiJS (https://github.com/kittykatattack/bump), wrapped into npm package

一个用于图片标注的javascript库，基于canvas，简单轻量，支持矩形、多边形、点、折线、圆形、网格。

A CLI tool to download verified smart contract source code from Etherscan and other block explorers using the Etherscan V2 API.

SDK for EVM chains, used in conjunction with @wormhole-foundation/connect-sdk

n8n node for accessing multiple blockchain networks (Ethereum, BSC, Polygon, Fantom, Avalanche, Arbitrum, Optimism, etc.) with comprehensive analytics and data retrieval capabilities

CryptAPI's Library for NodeJS

turf boolean-point-in-polygon module

Merge solid polygons and decompose into convexes.

SDK for EVM chains, used in conjunction with @wormhole-foundation/connect-sdk

SDK for EVM chains, used in conjunction with @wormhole-foundation/connect-sdk

a faster & more complete OSM & Overpass (either in xml or in json formats) to geojson convertor - 4x faster than xmldom + osmtogeojson in most situations - implemented in TypeScript with txml for XML parsing

Performant & ergonomic 2D geometry in typescript

Coordinate, linear, and area measure tool for Leaflet maps

Compute visibility polygons by Triangular Expansion

Library for polygons operations

Make svg polygon & star shape

A Multichain crypto wallet library that supports Ethereum, Bitcoin, Solana, Waves and other EVM compatible blockchains E.g. Binance Smart Chain, Polygon, Avalanche etc.

SDK for EVM chains, used in conjunction with @wormhole-foundation/connect-sdk

Official MCP (Model Context Protocol) server for UniVoucher.com - the world's first decentralized crypto gift card protocol. Provides comprehensive documentation access and live API integration for building on the UniVoucher ecosystem across multiple bloc

Quickly find points in large sets of polygons

Zoopla inspired freehand polygon creation using Leaflet.js.

## Demo

mongoose schema to support geojson fields

A simple javascript plotting boilerplate for 2d stuff.

Core contracts for the Complus Network on top of Polygon - Matic Network