JSPM

Operations for two-dimensional polygons.

turf boolean-point-in-polygon module

turf bbox module

turf area module

turf unkink-polygon module

turf buffer module

turf rewind module

turf mask module

turf envelope module

turf tesselate module

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

turf points-within-polygon module

turf circle module

turf point-on-feature module

turf tag module

turf polygon tangents module

a JavaScript library for performing geospatial operations with GeoJSON

Fill a polygon with lines

turf polygon-to-line module

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

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

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

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

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

Polygon/polyline processing utilities

turf point-to-polygon-distance module

A JS library for finding optimal label position inside a polygon

A fast polyline and polygon clipping library.

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

Index for matching points against a set of GeoJSON polygons

A Leaflet Plugin For Editing Geometry Layers in Leaflet 1.0

Convert a planar graph to a collection of nest polylines

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

Constrained Delaunay Triangulation in 2D

Triangulates a complex polygon

Splits a convex polygon by a plane

Industrial strength point in polygon test

Simplifies a planar graph

Javascript library for 2d geometry

Computes the closest point to a polytope in arbitrary dimensions

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

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

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

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

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

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

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

A library of intersection algorithms covering all SVG shape types

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

Convex decomposition for 2D polygons

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

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

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

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

turf polygon module

Extract elementary geometries from a geojson inheriting properties.

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

Convex decomposition for 2D polygons

turf extent module

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

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

Drag functionality for Leaflet vector layers

Fast geometry in geometry lookup for large GeoJSONs

Javascript implementation of GEOS's Polygonize function

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.

Allow to drag Leaflet path

Return the centroid for a given convex polygon.

Zoopla inspired freehand polygon creation using Leaflet.js.

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

CLI tool for Elephant Network

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)

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.

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

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.

Calculate the area of a simple polygon

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)

Greiner-Hormann clipping algorithm

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

Check if point is inside polygon

Drag feature functionality for Leaflet.draw

Any dimensional Minkowski sums of convex polytopes

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

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

Polygon tools

chaikin's smoothing algorithm for 2D lines

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

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.

Create N number of random points inside of a polygon

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

WebAssembly port of the Clipper2 library for polygon clipping and offsetting

Polygon convex partitioning and triangulation.

Check if two polygons overlap

Yandex.MapKit and Yandex.Geocoder for react-native

2D / 3D closest point / proximity helpers

Infinity Wallet connection SDK for DApp web3 connect integration

triangulates a series of 2D contours

Detect if a polygon has self intersecting lines

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

Ignite UI React Maps components.

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

Javascript library for 2d geometry

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

Zoopla inspired freehand polygon creation using Leaflet.js.

Converts path commands for an SVG path to polygonal points.

2D polygon/polyline analysis & processing utilities

Sveaflet = Svelte + Leaflet

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

2D/3D convex polygon tessellators

US and canada state polygon - state outline

构造多边形对象，通过 PolygonOptions 指定多边形样式。

Agentic commerce tools for Boson and Fermion protocols

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

高德地图 Polygon 编辑器。

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

Return random position inside geoJson Polygon or MultiPolygon

Turns any GeoJSON shape into a list of geohashes

clip a polygon with another

Clipping and geometric operations for spherical polygons.

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

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

A personal CLI tool for ZisK zkVM development testing and learning purposes. This is NOT an official ZisK tool - for production use, please refer to the official ZisK documentation. This tool automates basic ZisK workflows for educational and testing purp

高德地图 MouseTool 绘制工具。

Yandex MapKit for React Native

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

Interpolate circle to polygon for GeoJSON

Polygon equidistant offset

chaikin's smoothing algorithm for any dimension lines

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

turf bbox module

Leaflet plugin to create polygon with circle, for touchscreen

A module to check if a polygon self-intersects

Ultralight JS for Ethereum

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.

Extracts the boundary of a binary 2D image

Maps postal codes to polygons

Computes a boolean combination of two planar graphs

Utilities to split GeoJSON geometries

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

a few point and polygon utils

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

Fast 2D contour line extraction / generation

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

triangulates a fontpath using poly2tri

Ignite UI Angular map components.

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

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。

test if 2D convex polygon is clockwise

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>

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

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

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

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

Source for all GeoJSON boundaries on Earth

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

Crypto wallet generator CLI tool

Quickly find points in large sets of polygons

Coordinate, linear, and area measure tool for Leaflet maps

Zoopla inspired freehand polygon creation using Leaflet.js.

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

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

Boolean operations on polygons

🧊 HODL Wallet - Fast CLI crypto wallet!

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

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

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

n-dimensional boids simulation with modular behavior system

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

Wavefront OBJ parser (& exporter soon)

Smoothing algorithm for 2D lines and polygons

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

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

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。

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

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

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

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

soundsright chain sdk

Make svg polygon & star shape

CryptAPI's Library for NodeJS

turf boolean-point-in-polygon module

Merge solid polygons and decompose into convexes.

Compute visibility polygons by Triangular Expansion

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

Library for polygons operations

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

Quickly find points in large sets of polygons

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

mongoose schema to support geojson fields

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

## 简介 `canvas-mark-board` 基于原生canvas封装的图像标注工具，在 vue / react / 原生js 应用中都可以实现标注功能。提供了一系列事件和方法，用于管理标注对象、绘制标注形状、导入标注数据等操作。

## Demo

Zoopla inspired freehand polygon creation using Leaflet.js.

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

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.

Gomjau-hogg notation tessellations of regular polygons

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

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

Tools for rounding geometry primitives for Three.js

Ignite UI Web Components map components.

Pipedream polygon Components

A simple javascript plotting boilerplate for 2d stuff.

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

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

Converts GeoJOSN polygons to osm poly format file.

turf rhumb-circle module

Interactive drawing of polygons on the map.

Build a stark from a PIL

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