{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$id": "skin.schema.json",
    "title": "Skin",
    "type": "object",
    "description": "Joints and matrices defining a skin.",
    "$ref": "glTFChildOfRootProperty.schema.json",
    "properties": {
        "inverseBindMatrices": {
            "$ref": "glTFid.schema.json",
            "description": "The index of the accessor containing the floating-point 4x4 inverse-bind matrices.",
            "gltf_detailedDescription": "The index of the accessor containing the floating-point 4x4 inverse-bind matrices. Its `accessor.count` property **MUST** be greater than or equal to the number of elements of the `joints` array. When undefined, each matrix is a 4x4 identity matrix."
        },
        "joints": {
            "type": "array",
            "description": "Indices of skeleton nodes, used as joints in this skin.",
            "items": {
                "$ref": "glTFid.schema.json"
            },
            "uniqueItems": true,
            "minItems": 1,
            "gltf_detailedDescription": "Indices of skeleton nodes, used as joints in this skin."
        },
        "skeleton": {
            "$ref": "glTFid.schema.json",
            "description": "The index of the node used as a skeleton root.",
            "gltf_detailedDescription": "The index of the node used as a skeleton root. The node **MUST** be the closest common root of the joints hierarchy or a direct or indirect parent node of the closest common root."
        }
    },
    "required": [ "joints" ]
}