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openrndr

// openrndr/openrndr

OPENRNDR. A Kotlin/JVM library for creative coding, real-time and interactive graphics

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stars:970forks:79updated:2026-05-29
README.md
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OPENRNDR

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A Kotlin/JVM and Kotlin/JS library for creative coding, real-time and interactive graphics. Can currently be used on Windows, macOS and Linux/x64 to create standalone graphical applications.

Basics and use are further explained in the OPENRNDR guide.

Repository structure

moduledescription
openrndr-animatableTooling for interactive animations
openrndr-applicationApplication and Program classes
openrndr-binpackBinpacking algorithm used for texture atlasses
openrndr-colorColor spaces
openrndr-ddsDirectDraw Surface file (.dds) loader
openrndr-demosA collection of small in-repository demos
openrndr-drawDrawing primitives
openrndr-eventEvent classes
openrndr-extensionsBuilt-in OPENRNDR extensions
openrndr-filterBuilt-in filters
openrndr-jsKotlin/JS specific modules
openrndr-jvmKotlin/JVM specific modules
openrndr-mathMath functions and classes
openrndr-nullglMock graphics back-end
openrndr-shapeClasses and functions for working with 2D shapes
openrndr-svgLoading and saving SVG
openrndr-utilsAssorted utilities

Using OPENRNDR

You are advised to use the OPENRNDR template which provides a quick start to using the library.

OPENRNDR's Javascript/WebGL is still experimental and under development. However, if you feel like trying it you should use the OPENRNDR JS template.

Building OPENRNDR

After cloning the repository, make sure you have Java 11 or newer installed and run the following command:

./gradlew build

This should start the build process, which will take some time to complete.

Note that OPENRNDR does not depend on anything that is not on Maven Central, builds should be easy and predictable.

Installing OPENRNDR as Maven artifacts

In order to use the OPENRNDR build from your applications one has to install OPENRNDR's Maven artifacts in the local Maven repository.

./gradlew publishToMavenLocal snapshot

A more detailed walk-through of building, publishing to Maven local and contributing can be found in the wiki.

Community

Visit the OPENRNDR website for the latest news on OPENRNDR, showcases and events

Join us on the OPENRNDR forum for questions, tutorials and showcases.

Reach us more directly on the OPENRNDR Slack.

metadata.json
KotlinCreative CodinggraphicsjvmkotlinshadersWebGL

[INFO] 2 topics link to curated motion topic pages.