BlenderUpdater

Script for updating mesh models in Blender projects while preserving their properties (textures, colors, materials, etc.).

Features

• Updates mesh geometry while preserving UV maps, materials, and other properties
• Supports multiple file formats: STL, GLB, GLTF
• Configuration-based batch updating
• Preserves object hierarchy and transformations

Usage

1. Place update_blend_file.sh in the same folder as your main Blender file
2. Edit update_blend_file.sh and fill in the name of your blend file
3. Configure scripts/config.json to define which parts to update
4. Run: ./update_blend_file.sh

Configuration

Edit scripts/config.json to specify:

• Individual parts by exact path
• Path patterns using wildcards

Example:

{
  "parts": [
    {
      "name": "./parts_in_use/part.stl"
    }
  ],
  "paths": [
    "./parts_in_use/*.stl"
  ]
}

Supported File Formats

• STL (imported with 0.001 scale)
• GLB
• GLTF

How It Works

The script:

1. Imports new mesh geometry from specified files
2. Matches them with existing objects in the Blender scene by name
3. Replaces only the geometry while preserving:
   • UV maps
   • Materials
   • Textures
   • Object properties
   • Hierarchy and parenting

Requirements

• Blender (command-line accessible)
• Python (included with Blender)