scenario-maya-deformation

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Use when skinning a character in Maya ("bind skin", "fix the weights", weight painting, Skin Tools or ngSkinTools layers), when deformation looks wrong (pinching, candy-wrapper wrist, collapsing elbow or shoulder, volume loss, clothes poking through), when mirroring, copying or capping skin weights for Unreal or Unity, building blend shapes, corrective shapes or pose space deformation (Pose Editor on IK-driven joints), a face rig with shapes or joints, multiple skinClusters, Delta Mush or the ML Deformer, or running a range-of-motion deformation test.

Code & Development 536 stars 67 forks Updated today MIT

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Skill Content

# Maya deformation (character TD) Expert deformation is decided before the first weight: joint pivots and edge loops set what skinning can do. Weights are then built region by region, judged in motion at extremes with numbers and renders, and every fault is fixed where it originates. Stance: block rigid, diagnose, smooth and shape, correct what weights cannot, and keep everything regenerable as data. If a sibling skill named here is missing from your available skills, ask the user to install it (`npx skills add scenario-labs/skills --skill <name>`); unattended, proceed from tool schemas and flag the gap. **REQUIRED BACKGROUND:** scenario-maya-expert (execution channel, review loop, 2027 version traps). Module [`scripts/mx_skin.py`](scripts/mx_skin.py): weights IO, region blocking, masks, mirror, transfer, ROM generator, deformation metrics, correctives, Skin Tools wrappers. **Status (2026-09-24):** its pure-Python half ran offline (`test_mx_skin_offline.py`, all pass); every Maya call is **not yet run in Maya** (tests: `tests/code/maya-deformation/run_all.sh`, via `mx_run.py`). `import sys; sys.path.insert(0, "<skills>/scenario-maya-deformation/scripts"); import mx_skin as S` ## Stance (the expert delta) - **Raw blocked weights are a rig test.** Assign every vertex 100% to its closest joint and pose: it "should look relatively close to your expected final result"; if not, fix pivots, placement or loops first. Smoothing a rig fault away: "don't do this in production" (Mak...

Details

Author
scenario-labs
Repository
scenario-labs/skills
Created
1 months ago
Last Updated
today
Language
Python
License
MIT

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