hkarim/JUCE-Graph-Component

JUCE Graph Component

This is a JUCE Framework set of components that allows drawing a graph by connecting nodes and edges. The component is inspired by the plugin host demo application that comes with JUCE, but this one is a different implementation.

Features

Each node can be scaled individually, zoom-in cmd + '+', zoom-out cmd + '-', or zoom to original scale cmd + '0'
Mute and un-mute nodes using cmd + 'm'
Delete a node or edge by selecting it and hit delete or backspace
Removing an edge by double-clicking it is also supported
Multi-select using keyboard or mouse is supported
Duplicate a selection using cmd + 'd'
Backed by a simple graph that supports communication between nodes
The graph can run in both in sync and async modes
Sample application to preview the component and how to use it
Very simple theming for changing the overall components look and feel

Demo Plugin - HKGraphMidi

All the features of the component backed in a VST3 plugin
Right-click on the demo window to add example nodes, and drag pins to create edges
Sample MIDI processors including a note transposer, channel splitter, channel router, on-screen keyboard, etc.
Saving and loading plugin state is also supported

Demo Application - HKGraphApp

Standalone demo application, with example non-audio processors
Right-click on the demo window to add example nodes, and drag pins to create edges

Building

The following steps are tested only on macOS:

You will need a C++20 compiler, the build is tested with Clang 17
See CMakeLists.txt for instructions whether you have JUCE locally or installed using a package manager
Assuming you have vcpkg and JUCE installed, the following will get you started:

cmake -DCMAKE_TOOLCHAIN_FILE=$VCPKG_ROOT/scripts/buildsystems/vcpkg.cmake . -B cmake-build
cmake --build cmake-build --config Release --target HKGraphMidi_VST3
cmake --build cmake-build --config Release --target HKGraphApp

Legacy

Old implementation is now on the legacy branch

Credits

CurveEditor (slightly modified) [MIT] - MIDI-Transformer
uuid [MIT] - stduuid

License

MIT

hkarim / JUCE-Graph-Component