Model Rigging ​

Hairstyle Rigging Tutorial ​

Create the Hair Attachment Point:

• Create a Hair_Root attachment point aligned with the Hair_Root point in the humanoid skeleton.
• The custom-created attachment point should have no rotation or displacement in its coordinates.

Note: There are two Hair_Root points:

• One is part of the standard skeleton (cannot be modified).

• The other is custom-created based on the hair model.

  

Create Hair Bones:

• Construct bones following the flow of the hairstyle.
• For front and back hair models, create separate bone chains: HairA for the front and HairB for the back.
• If the hairstyle does not separate front and back hair, only the HairB bone chain is needed.

Apply Skinning:

• Assign the Skin modifier to the front and back hair models.
• Add the corresponding bone chains (HairA and HairB) for their respective sections.

Bone Influence Limit:

• Each vertex can be influenced by a maximum of 4 bones. (Default settings in most DCC software exceed 4 and must be manually adjusted to 4.)

Weight Optimization:

• Adjust skeleton keyframes to inspect the binding weight information for overlaps or structural anomalies.
• Make targeted adjustments to optimize the weight distribution for smoother animations.

Full Workflow for Hairstyle Rigging ​

Clothing Rigging Tutorial ​

• Select the Appropriate Skeleton: Use either the internal or external skeleton for binding based on the model type.
• Verify Model Orientation: Ensure the model's orientation matches the software's front view and the model's face is forward-facing. Confirm that the model's coordinates are set to (X/Y/Z = 0/0/0). Adjust if necessary.

• Unit Settings: Set the unit of measurement in the software to centimeters for consistency.

  

• Match the Skeleton with the Model: Align the model's joints with the corresponding skeleton joints. Restrictions: Do not adjust skeleton hierarchy, naming, or size.

  

• Apply Skin Modifier: Add the Skin modifier to the model and assign the required skeleton bones.

• Exclude Certain Bones: Exclude Bip_01 and Root from the skinning process.

• Bone Influence Limit: Ensure that each vertex is influenced by a maximum of 3 bones. (Most DCC software defaults exceed this and must be manually adjusted.)

• Adjust Keyframes for Testing: Modify skeleton keyframes to inspect binding weights for any overlaps or structural anomalies. Make necessary optimizations.
• Import Weight Check Animation: Test the model and skeleton for potential issues like stretching, clipping, or broken faces.
• Download: Skin Weight Check Animation

Seam Weight Standards for Base Model Integration: ​

• Base Model Seam Alignment: Ensure weight consistency at seams to prevent clipping or breaking during animation.

• Weight Assignment Example: For the waist seam, both the top and bottom models should share the same weight values (e.g., Spine_01:1).

  Seam Location	Female Weight Reference	Weight Assignment	Male Weight Reference	Weight Assignment
  Neck (Top Seam):		Head:0.5 Neck_01:0.5		Head:0.5 Neck_01:0.5
  Glove (Top Seam):		Hand_L:0.4 Lowerarm_L:0.6		Hand_L:0 Lowerarm_L:1
  Top-Bottom Seam:		Spine_01:1		Spine_01:1
  Bottom-Shoe Seam:		Calf_L:1		Calf_L:1

Full Clothing Rigging Workflow (Example: Top Clothing): ​