G'MIC Node Editor for Blender 🔆

A node editor graph for image manipulation using G'MIC directly inside Blender, featuring 100+ of filters.

Index

• How to Use ?
  • G'MIC Installation
  • Addon Installation
  • G'MIC Node Editor
• Development
  • How it Work ?

How to Use ?

G'MIC Installation

1. Download the G'MIC binary file from the G'MIC Website:
   • For Windows, look under G'MIC for Windows - Other interfaces, and select Command-line interface (CLI).
2. Extract the downloaded files.
3. Copy the full path to the gmic.exe file.

Addon Installation

1. Download the addon zip file:

   • Use Code > Download ZIP or check Releases on the repository page.

2. Open Blender and go to Edit > Preferences > Add-ons.

3. Click Install From Disk, and select the downloaded addon zip file.

4. Click the dropdown menu of the installed addon, and paste the full path to the gmic.exe file.

G'MIC Node Editor

1. Switch the Editor Type to G'MIC Node Editor from the editor selection menu.

2. Add G'MIC nodes to your graph and begin post-processing images.

Development

• TODO
• gmic-node-editor-generator used to generate nodes.

How it work ?

1. Node Traversal: When the Execute button is clicked, the graph traverses through the nodes in the node tree.

2. Execution Process: For each node, the execute() method is called.

3. Command Generation: The execute() method of the node calls the finialize_command() method.

4. Command Creation:

   • The finialize_command() method:
     • Retrieves the input command from the next node via get_input_value("in").
     • Appends the command generated by the current node's create_command() method.
   • The create_command() method is responsible for generating the specific G'MIC command for the current node, such as:

   def create_command(self):
       return f"blur {self.amount}"
   

5. Command Chaining: This chaining of commands ensures that each node contributes its functionality (like applying a blur or filter) to the final command string in sequence.

6. Final Command Execution: Once all nodes are processed, the final G'MIC command string is generated and executed. And the image is reloaded.

You can open the console window to see the final command.

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