NodeGraphProcessor

Node graph editor framework focused on data processing using Unity UIElements, GraphView and C# 4.7

This node based solution provides a great C# API allowing you to implement conditional graphs, dependencies graphs, processing graphs and more.

Based on Unity's GraphView technology, NodeGraphProcessor is also very fast and works well with large graphs.

Simple and powerful C# node API to create new nodes and custom views.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using GraphProcessor;
using System.Linq;

[System.Serializable, NodeMenuItem("Operations/Sub")] // Add the node in the node creation context menu
public class SubNode : BaseNode
{
    [Input(name = "A")]
    public float                inputA;
    [Input(name = "B")]
    public float                inputB;

    [Output(name = "Out")]
    public float				output;

    public override string		name => "Sub";

    // Called when the graph is process, process inputs and assign the result in output.
    protected override void Process()
    {
        output = inputA - inputB;
    }
}

Unity Compatible versions

This project requires at least Unity 2020.2 with a scripting runtime version of 4.x in player settings.
The current Unity version used for the project is 2020.2.0f1, if you want to install NodeGraphProcessor in an older unity project, you can install it via Open UPM (minimum version: Unity 2019.3).

Installation

Install Manually

There are two ways to install this asset: you can use the Unity package manager or move the entire repo inside your Assets folder. To install using the package manager:

download this repo
inside the package manager click the '+' button at the bottom to add a package from disk
then select the package.json file located in Assets/NodeGraphProcessor
package is installed :)

Install via OpenUPM

The package is available on the openupm registry. It's recommended to install it via openupm-cli.

openupm add com.alelievr.node-graph-processor

Install via Git

Alternatively, you can use the git address feature in the package manager on the branch #upm, it only contains the package but it may be out of sync compared to master.

Note that you'll not have access to the examples provided in this repo because the package only include the core of NodeGraphProcessor.

Features

Node and Graph property serialization (as json)
Scriptable Object to store graph as a Unity asset.
Highly customizable and simple node and links API
Support multi-input into a container (multiple float into a list of float for example)
Graph processor which execute node's logic with a dependency order
Documented C# API to add new nodes / graphs
Exposed parameters that can be set per-asset to customize the graph processing from scripts or the inspector
Parameter set mode, you can now output data from thegraph using exposed parameters. Their values will be updated when the graph is processed
Search window to create new nodes
Colored groups
Node messages (small message with it's icon beside the node)
Stack Nodes
Relay nodes
Display additional settings in the inspector
Node creation menu on edge drop
Simplified edge connection compared to default GraphView (ShaderGraph and VFX Graph)
Multiple graph window workflow (copy/paste)
Vertical Ports
Sticky notes (requires Unity 2020.1)
Renamable nodes

More details are available in the Changelog

Documentation

API doc is available here: alelievr.github.io/NodeGraphProcessor

The user manual is hosted using Github Wiki.

Remaining to do

Investigate for ECS/Jobs integration
API to create the graph in C#
Subgraphs

For more details consult our Github Project page.

Projects made with NodeGraphProcessor

Mixture

Want to be in the made with list? Send a message to the issue #14

Gallery

Minimap

Relay nodes

Node connection menu

Node creation menu

Graph Parameters

Groups

Node Settings

Node Messages

Conditional Processing (in Example)

Stacks

Relay Node Packing

Node Inspector

Improved Edge Connection

Multi-Window support

Field Drawers (Thanks @TeorikDeli!)

Sticky Notes (2020.1 or more required)

Vertical Ports

Drag And Drop Objects

Renamable nodes

Just add this bit of code in your Node script to make it renamable in the UI.

        public override bool	isRenamable => true;

Mefodei / NodeGraphProcessor