@thi.ng/geom

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This project is part of the @thi.ng/umbrella monorepo.

About
- Support packages
- Status
Installation
Dependencies
Usage examples
API
Authors
License

About

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

This project is a partially ported from the Clojure version of the same name. All polymorphic operations built on @thi.ng/defmulti.

Up-to-date feature matrix spreadsheet

This package acts as a higher-level frontend for most of the following related packages (which are more low-level, lightweight and usable by themselves too):

Support packages

@thi.ng/geom-accel - n-D spatial indexing data structures with a shared ES6 Map/Set-like API
@thi.ng/geom-api - Shared type & interface declarations for @thi.ng/geom packages
@thi.ng/geom-arc - 2D circular / elliptic arc operations
@thi.ng/geom-clip-line - 2D line clipping (Liang-Barsky)
@thi.ng/geom-clip-poly - 2D convex polygon clipping (Sutherland-Hodgeman)
@thi.ng/geom-closest-point - 2D / 3D closest point / proximity helpers
@thi.ng/geom-fuzz - Highly configurable, fuzzy line & polygon creation with presets and composable fill & stroke styles. Canvas & SVG support
@thi.ng/geom-hull - Fast 2D convex hull (Graham Scan)
@thi.ng/geom-io-obj - Wavefront OBJ parser (& exporter soon)
@thi.ng/geom-isec - 2D/3D shape intersection checks
@thi.ng/geom-isoline - Fast 2D contour line extraction / generation
@thi.ng/geom-poly-utils - 2D polygon / triangle analysis & processing utilities
@thi.ng/geom-resample - Customizable nD polyline interpolation, re-sampling, splitting & nearest point computation
@thi.ng/geom-splines - nD cubic & quadratic curve analysis, conversion, interpolation, splitting
@thi.ng/geom-subdiv-curve - Freely customizable, iterative nD subdivision curves for open / closed geometries
@thi.ng/geom-tessellate - 2D/3D convex polygon tessellators
@thi.ng/geom-voronoi - Fast, incremental 2D Delaunay & Voronoi mesh implementation

Status

BETA - possibly breaking changes forthcoming

Installation

yarn add @thi.ng/geom

// ES module
<script type="module" src="https://unpkg.com/@thi.ng/geom?module" crossorigin></script>

// UMD
<script src="https://unpkg.com/@thi.ng/geom/lib/index.umd.js" crossorigin></script>

Package sizes (gzipped, pre-treeshake): ESM: 10.33 KB / CJS: 10.64 KB / UMD: 10.00 KB

Dependencies

Usage examples

Several demos in this repo's /examples directory are using this package.

A selection:

Description	Live demo	Source
Convex hull & shape clipping of 2D polygons	Demo	Source
geom-fuzz basic shape & fill examples	Demo	Source
Animated, recursive polygon tessellations	Demo	Source
Poisson-disk shape-aware sampling, Voronoi & Minimum Spanning Tree visualization	Demo	Source
Mouse gesture / stroke analysis, simplification, corner detection	Demo	Source
2D Bezier curve-guided particle system	Demo	Source
Animated arcs & drawing using hiccup-canvas	Demo	Source
Canvas based Immediate Mode GUI components	Demo	Source
Animated sine plasma effect visualized using contour lines	Demo	Source
Polygon to cubic curve conversion & visualization	Demo	Source
Animated Voronoi diagram, cubic splines & SVG download	Demo	Source
2D scenegraph & shape picking	Demo	Source
2D scenegraph & image map based geometry manipulation	Demo	Source
3D wireframe textmode demo	Demo	Source

API

Generated API docs

TODO

Authors

Karsten Schmidt