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A pure Java implementation ofFlow-based Programming (FBP).

Flow-based programming is best known in no-code/low-code systems like Scratch, Node-RED, Unity's material editor, and UnrealEngine's Blueprints. It is a way to visually represent a program's data flow. Each node is amethod that takes input and produces output. The connections between nodes direct the data thatflows between them.

Data-flow programming is aesthetically pleasing, greatly reduces the chance of syntax error, and empowering for peoplethat are not fluent in the archaic syntax of text-only languages.

• Nodes are not directed or forced to run via triggers. There is little danger of large networks overflowing the stack. They could be run in parallel.
• Folding: Collapse a subgraph down to a single Node withFold and reverse withUnfold
• Convenient built-in nodes for basic math and reporting.
• Unit tests for everything! If it can be tested, we shall!
• The editor has written in Java Swing. The main executable class iscom.marginallyclever.donatello.Donatello.
• While running the Swing editor you can also access Swing-only nodes likeLoadImage andPrintImage. PrintImage results will appear in the background of the node editor panel.
• A ~/Donatello/ folder contains the application log file.
• A ~/Donatello/extensions/ folder contains 3rd party plugins. Add new Nodes or write your own.

1. Download the latest source code fromhttps://github.com/MarginallyClever/NodeGraphCore/
2. Use your favorite IDE to import the Maven project.
3. Use Maven to "install" the project. It will now be available as a local dependency in your other projects.

./src/test/java/com/marginallyclever/nodegraphcore has unit tests, which are also examples of how to use the API.

• Please see theJavadoc with the full API for Core and Swing.
• Please see guide forhow to Contribute
• TheOfficial webpage!
• Jointhe Discord channel and make new friends.

• https://github.com/otto-link/GNode/
• https://nodes.io/story/
• https://github.com/janbijster/cobble
• https://github.com/kenk42292/shoyu
• https://github.com/paceholder/nodeeditor
• https://github.com/miho/VWorkflows
• https://nodered.org/
• Maya, Unity, Blender
• NoFlo, Flowhub
• and others

• Flow based programming Discord
• https://jpaulm.github.io/fbp/