JSPM

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

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

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

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

turf polygon module

Extract elementary geometries from a geojson inheriting properties.

Javascript implementation of GEOS's Polygonize function

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

Drag functionality for Leaflet vector layers

Convex decomposition for 2D polygons

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

Fast geometry in geometry lookup for large GeoJSONs

Split a polygon using a polyline.

Baidu Map map-polygon Components for React.

Schema definitions for GeoJSON types for use with Mongoose JS

Polygon offsetting algorithm, aimed for use with leaflet

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

API to interact with Helio Finances program on EVM chains.

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.

Zoopla inspired freehand polygon creation using Leaflet.js.

Everstake Wallet SDK for Javascript

utility for working with polygons (arrays of vec2s)

perform boolean operations on arbitrary polygons in 2d

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.

CLI tool for Elephant Network

compute the area of a 2d polygon

A 2D constrained Delaunay triangulation library

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

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

point in polygon searches for leaflet

Determine if an x y coordinate exists in a polygon.

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

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

Mappls Maps official hybrid map SDK for angular & reactJS NPM

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

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

Greiner-Hormann clipping algorithm

Check if point is inside polygon

Any dimensional Minkowski sums of convex polytopes

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

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

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)

Drag feature functionality for Leaflet.draw

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

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

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

Polygon tools

WebAssembly port of the Clipper2 library for polygon clipping and offsetting

Create N number of random points inside of a polygon

Polygon convex partitioning and triangulation.

2D / 3D closest point / proximity helpers

Check if two polygons overlap

Yandex.MapKit and Yandex.Geocoder for react-native

Detect if a polygon has self intersecting lines

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.

Ignite UI React Maps components.

triangulates a series of 2D contours

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

Converts path commands for an SVG path to polygonal points.

Zoopla inspired freehand polygon creation using Leaflet.js.

Sveaflet = Svelte + Leaflet

2D/3D convex polygon tessellators

Javascript library for 2d geometry

US and canada state polygon - state outline

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

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

Return random position inside geoJson Polygon or MultiPolygon

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

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。

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

高德地图 Polygon 编辑器。

Turns any GeoJSON shape into a list of geohashes

clip a polygon with another

Agentic commerce tools for Boson and Fermion protocols

Clipping and geometric operations for spherical polygons.

高德地图 MouseTool 绘制工具。

Yandex MapKit for React Native

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

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

Polygon equidistant offset

Interpolate circle to polygon for GeoJSON

chaikin's smoothing algorithm for any dimension lines

turf bbox module

Leaflet plugin to create polygon with circle, for touchscreen

Ultralight JS for Ethereum

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

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

Fast 2D contour line extraction / generation

Extracts the boundary of a binary 2D image

A module to check if a polygon self-intersects

Maps postal codes to polygons

Computes a boolean combination of two planar graphs

Utilities to split GeoJSON geometries

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.

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

triangulates a fontpath using poly2tri

a few point and polygon utils

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

n-dimensional boids simulation with modular behavior system

Wavefront OBJ parser (& exporter soon)

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

Coordinate, linear, and area measure tool for Leaflet maps

Ignite UI Angular map components.

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

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

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

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。

<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

A 2D collision checker for modern JavaScript games.

Yandex.MapKit and Yandex.Geocoder for react-native

Leaflet plugin for drawing bezier splines from polylines and polygons

Quickly find points in large sets of polygons

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

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

Boolean operations on polygons

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。

Zoopla inspired freehand polygon creation using Leaflet.js.

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

Helper functions to convert BBoxes to multiple formats

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

Crypto wallet generator CLI tool

🧊 HODL Wallet - Fast CLI crypto wallet!

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

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

Smoothing algorithm for 2D lines and polygons

Everstake Wallet SDK for Javascript

Polygon - Everstake Wallet SDK

soundsright chain sdk

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

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

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

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

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。

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

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

Coordinate, linear, and area measure tool for Leaflet maps

Compute visibility polygons by Triangular Expansion

Make svg polygon & star shape

Library for polygons operations

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

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

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

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.

determine if a polygon is clockwise or counter-clockwise

Typescript package used to batch smart contract read calls into a single tx through the use of a multicall contract.

A simple javascript plotting boilerplate for 2d stuff.

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

Ignite UI Web Components map components.

Pipedream polygon Components

Provides feature drawing functionality for Ember-Leaflet, based on wrapping the Leaflet Draw library

A suite of utilities used to implement bridges based on the Wormhole protocol.

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

Converts GeoJOSN polygons to osm poly format file.

This is a utility function to calculate the bounding box of series of 2D points

Interactive drawing of polygons on the map.

A turf module to transform a LineString geometry to a (closed) Polygon geometry.

Gomjau-hogg notation tessellations of regular polygons

determine if a point is inside a polygon with ray casting or winding numbers

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

Zoopla inspired freehand polygon creation using Leaflet.js.

Performant & ergonomic 2D geometry in typescript

List of tokens on Ethereum and Ethereum-compatible chains

Smoothes a polyline (as flat number array) using Chaikins Algorithm

Generate polygons around a point

ElizaOS plugin for Zapper protocol integration - portfolio tracking, DeFi analytics, and blockchain data across 50+ networks

Model Context Protocol server providing access to Tatum's comprehensive blockchain API across 130+ networks with 13 tools

MCP server for OKX DEX Analytics - comprehensive DEX aggregator analytics with multi-chain support

Yandex.MapKit and Yandex.Geocoder for react-native

A comprehensive TypeScript library for geospatial operations including geofencing, polygon containment, area calculations, and coordinate processing. Supports GeoJSON, KML, and KMZ file formats with both local file and remote URL loading capabilities.

Math utils for 2d graphics

Receives zip code polygon data and transforms it into geoJSON format

A suite of utilities used to implement bridges based on the Wormhole protocol.

Yandex.MapKit and Yandex.Geocoder for react-native

turf rhumb-circle module

Yandex MapKit for React Native

Build a stark from a PIL

A simple component for rendering polygons

Mappable Kit for react-native

MCP server for Web3 wallet interactions on EVM-compatible chains using Wagmi

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

Library for calculation of polygon centroid and bounding box area.

Zoopla inspired freehand polygon creation using Leaflet.js.

n8n node for accessing NFT data via OpenSea API with comprehensive filtering and AI Agent support

A polygon cropper built in top of fabric.js

Transforms Google Maps Polygons/Google Maps Encoded Polygons/WKB/WKT into GeoJSON

ElizaOS plugin for Polygon zkEVM

Fast point in polygon algorithm

Pure HTML polygons for React, no SVG.

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

A utility to generate coordinates of an equilateral polygon.

Vue3 component for drawing hotzones (lines/polygons) on images

BlockBee's Library for NodeJS

TypeScript SDK for Aryze Reforge cross-chain bridge protocol

Convert a planar straight line graph into a polygon

This is the core package enabling HTML Polygons for React.

Return the center for a given SVG polygon points

dxf-parsing is made to parse dxf files : polygons, texts, circles ...

Polygon - Everstake Wallet SDK

TypeScript SDK for overlay.fun API

An extension to Leaflet.draw to allow editing large polylines one chunk at the time

This is the official Alps Finance smart contract repository.

🛠 An SDK for building applications on top of Litedex V1

Features of the Rarimo SDK that provide access to wallets and the ability to interact with them on the NEAR blockchain.

Front end api for geo barriers

A schematics packages providing tools for developping Angular Dapps

A Graphic Drawing Tool Based on Fabric.js

Exhaustively tested point-in-polygon javascript functions.

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

Unified drawing tools for Google Maps

Coordinate, linear, and area measure tool for Leaflet maps

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

API to polygonscan with a simple interface

Model Context Protocol server providing access to Tatum's comprehensive blockchain API across 130+ networks with 13 tools

GoogleMapDrawFilter

A point-based game engine and editor