SpiderBox
Automatic IK metarig generation from Geometry Nodes.
- TYPE
- BLENDER ADD-ON
- STACK
- BLENDER · PYTHON · GEOMETRY NODES · RIGIFY
The problem
Multi-legged characters require a dedicated rig for every morphological variant. Rebuilding the skeleton, IK/FK chains and geometry binding by hand is slow, error-prone and hard to standardise: hierarchies and naming drift from one asset to the next, with a direct impact on animation and pipeline.
The solution
A Python add-on for Blender that automates the step from procedural geometry to a production rig. A Geometry Nodes setup parameterises the number and proportions of legs, joints and body; the tool analyses the mesh, detects the hip–knee–ankle chains and generates a complete Rigify metarig: root, locomotion and body controls, IK/FK chains for every leg, bone collections organised by side and a post-generation script. Once generated, the geometry is automatically bound to the deform bones, within a collection structure that keeps geometry, helpers and rig separate.
The result
An animation-ready rig in a few steps, for any variant of the character. Structure and naming stay identical across assets, ensuring compatibility with existing animation and pipeline tools, while the asset keeps full parametric control over shape and detail.