ImNodeFlow

Node-based editor/blueprints for ImGui

Create your custom nodes and their logic... ImNodeFlow will handle connections, editor logic, and rendering.

Features

• Support for Zoom
• Built-in Input and Output logic
• Built-in links handling
• Customizable filters for different connections
• Built-in customizable pop-up events
• Appearance 100% customizable

Implementation (CMake project)

CMake FetchContent

1. Add the following lines to your CMakeLists.txt:

   include(FetchContent)
   FetchContent_Declare(ImNodeFlow
       GIT_REPOSITORY "https://github.com/Fattorino/ImNodeFlow.git"
       GIT_TAG "origin/master"
       SOURCE_DIR "${CMAKE_CURRENT_LIST_DIR}/includes/ImNodeFlow"
   )
   FetchContent_MakeAvailable(ImNodeFlow)

   add_compile_definitions(IMGUI_DEFINE_MATH_OPERATORS)
   target_link_libraries(YourProject ImNodeFlow)

Manually

1. Download and copy, or clone the repo (or the latest release) inside your project
2. Add the following lines to your CMakeLists.txt:

   add_subdirectory(path/to/ImNodeFlow)
   . . .
   add_compile_definitions(IMGUI_DEFINE_MATH_OPERATORS)
   target_link_libraries(YourProject ImNodeFlow)

Requirements

1. Make sure you have the following dependencies available for find_package():
   • Dear ImGui

Simple Node example

class SimpleSum : public BaseNode
{
public:
    SimpleSum()
    {
        setTitle("Simple sum");
        setStyle(NodeStyle::green());
        addIN<int>("IN_VAL", 0, ConnectionFilter::SameType());
        addOUT<int>("OUT_VAL", ConnectionFilter::SameType())
                ->behaviour([this](){ return getInVal<int>("IN_VAL") + m_valB; });
    }

    void draw() override
    {
        ImGui::SetNextItemWidth(100.f);
        ImGui::InputInt("##ValB", &m_valB);
    }
private:
    int m_valB = 0;
};

Full documentation

For a more detailed explanation please refer to the documentation

Special credits

• ocornut for Dear ImGui
• thedmd for _imgui_beziermath.h
• nem0 for helping with Zoom support