Groom Rig

Groom Rig – Smart weight painting for hair cards.

Manual weight painting for hair cards is fragile, inconsistent, and time-wasting. Auto-weights fail because hair cards are not bodies — they require uniform, intentional deformation.

Groom Rig is a Blender add-on that automatically cleans, unifies, and standardizes hair card weight paints, producing deformation-stable results for real-time and production pipelines.

⚙️ Core Methods

🧩 Per-Card Uniform Weights
Auto-detects hair cards and enforces uniform weights per card.

🎯 Dominant Vertex Propagation
Selects a representative root vertex and propagates its weights.

📐 Parent Mesh Projection
Transfers skin weights directly from the character mesh.

📊 Weight Averaging
Normalizes existing weights across each card.

✅ Advantages

⚡ Automated – No manual painting
🧠 Deterministic – Same input, same result
🎮 Game-Ready – Clean deformation in Unreal Engine
🧼 Non-Destructive – No topology changes
🚀 Fast – Handles large grooms
🧩 Blender-Native – No mode switching

🧑‍🎨 Use Cases

🧔 Game hair cards
🎬 Cinematic grooms
🔧 Groom cleanup & fixes
📦 Import normalization

🔐 Licensing

🆓 Non-Commercial – Free / Pay-What-You-Want
💼 Commercial – Tailored to individuals and studios.