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character-rigging

Skill file .agents/skills/character-rigging/SKILL.md in OpenMontageInc/OpenMontage. Read the publisher’s upstream source.

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Published by OpenMontageInc ↗OpenMontageInc/OpenMontage

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SKILL.md

name: character-riggingdescription: Build data-driven 2D character rigs for local animation: parts, pivots, layers, constraints, views, and reusable rig packages.license: MIT

Character Rigging

Use this skill when building OpenMontage rig_plan artifacts or renderer input for local 2D character animation.

Proven Patterns

  • Keep runtime code generic; make each character a data package.
  • Split characters into independently transformable parts.
  • Define pivots in the same coordinate space as the artwork.
  • Store constraints on moving parts to prevent impossible rotations.
  • Keep layer order explicit; do not rely on SVG source order after generation.
  • Start with one view and add views only when the shot list requires them.

Rig Package

{
  "character_id": "mouse",
  "rig_type": "svg_rig",
  "parts": [
    { "id": "body", "kind": "torso", "layer": 10 },
    { "id": "head", "kind": "head", "layer": 30, "parent": "body" },
    { "id": "arm_right", "kind": "limb", "layer": 40, "parent": "body" }
  ],
  "joints": {
    "head": { "pivot": [320, 180], "rotation": [-20, 20] },
    "arm_right": { "pivot": [390, 310], "rotation": [-70, 95] }
  }
}

Quality Checklist

  • Every moving part has a pivot.
  • Every child part has a parent where hierarchy matters.
  • Mouth shapes are separate assets or separate path groups.
  • Eyes and pupils are separate when gaze needs to change.
  • Props are separate if the character touches or carries them.

Sources