comfyui-ddu

Custom nodes and UI extensions for ComfyUI.

Features

• AddFloatsNode: Adds two floats and outputs the sum
• UI button on the node: "Randomize a & b"
• Top center floating toolbar (Grasshopper-style) to spawn AddFloatsNode
• Red themed node styling

Installation

1. Place this folder under ComfyUI/custom_nodes/ as comfyui-ddu
2. (Optional) Install Python requirements:
   • From ComfyUI root with venv: run the provided installer

   python custom_nodes/comfyui-ddu/install.py
   

Usage

• Start ComfyUI
• In the UI:
  • Use the topbar button "Add DDU Add Floats" to drop the node
  • Or search for the node by name: "DDU Add Floats"
  • Click the node button "Randomize a & b" to fill inputs

Web Extension

• The extension is registered in web/test.js
• It colors the node red and injects UI elements

Node Implementation

• See nodes/test.py for the AddFloatsNode class
• Auto-loaded via __init__.py which scans the nodes/ directory

Troubleshooting

• 404s for optional files (harmless):
  • GET /api/userdata/user.css → create ComfyUI/user/user.css
  • GET /api/userdata/comfy.templates.json → create ComfyUI/user/comfy.templates.json with []
• Autocomplete endpoint 404 is from an optional extension; install or ignore

Development

• Python deps in requirements.txt
• JS extension lives in web/
• Hot reload typically requires a UI refresh; some changes require a restart

Folder Structure

comfyui-ddu/
  __init__.py
  install.py
  requirements.txt
  nodes/
    test.py
  web/
    test.js
    assets/
      registry.js
      ui.js
      styles.css
      icons/
        *.svg
        map.json