node.schema.json

{
    "$schema" : "http://json-schema.org/draft-03/schema",
    "title" : "node",
    "type" : "object",
    "description" : "A node in the node hierarchy.  A node can have either the `camera`, `meshes`, or `skeletons`/`skin`/`meshes` properties defined.  In the later case, all `primitives` in the referenced `meshes` contain `JOINT` and `WEIGHT` attributes and the referenced `material`/`technique` from each `primitive` has parameters with `JOINT` and `WEIGHT` semantics.  A node can have either a `matrix` or any combination of `translation`/`rotation`/`scale` (TRS) properties. TRS properties are converted to matrices and postmultiplied in the `T * R * S` order to compose the transformation matrix. If none are provided, the transform is the identity.",
    "extends" : { "$ref" : "glTFChildOfRootProperty.schema.json" },
    "properties" : {
        "camera" : {
            "extends" : { "$ref" : "glTFid.schema.json" },
            "description" : "The ID of the camera referenced by this node."
        },
        "children" : {
            "type" : "array",
            "description" : "The IDs of this node's children.",
            "items" : {
                "$ref" : "glTFid.schema.json"
            },
            "uniqueItems" : true,
            "default" : []
        },
        "skeletons" : {
            "type" : "array",
            "description" : "The ID of skeleton nodes.",
            "items" : {
                "$ref" : "glTFid.schema.json"
            },
            "uniqueItems" : true,
            "gltf_detailedDescription" : "The ID of skeleton nodes.  Each node defines a subtree, which has a `jointName` of the corresponding element in the referenced `skin.jointNames`."
        },
        "skin" : {
            "extends" : { "$ref" : "glTFid.schema.json" },
            "description" : "The ID of the skin referenced by this node."
        },
        "jointName" : {
            "extends" : { "$ref" : "glTFid.schema.json" },
            "description" : "Name used when this node is a joint in a skin."
        },
        "matrix" : {
            "type" : "array",
            "description" : "A floating-point 4x4 transformation matrix stored in column-major order.",
            "items" : {
                "type": "number"
            },
            "minItems" : 16,
            "maxItems" : 16,
            "default" : [ 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0 ],
            "gltf_detailedDescription" : "A floating-point 4x4 transformation matrix stored in column-major order.",
            "gltf_webgl" : "`uniformMatrix4fv()` with the transpose parameter equal to false"
        },
        "meshes" : {
            "type" : "array",
            "description" : "The IDs of the meshes in this node.",
            "items" : {
                "$ref" : "glTFid.schema.json"
            },
            "uniqueItems" : true,
            "gltf_detailedDescription" : "The IDs of the meshes in this node.  Multiple meshes are allowed so each can share the same transform matrix."
        },
        "rotation" : {
            "type" : "array",
            "description" : "The node's unit quaternion rotation in the order (x, y, z, w), where w is the scalar.",
            "items" : {
                "type": "number"
            },
            "minItems" : 4,
            "maxItems" : 4,
            "default" : [ 0.0, 0.0, 0.0, 1.0 ]
        },
        "scale" : {
            "type" : "array",
            "description" : "The node's non-uniform scale.",
            "items" : {
                "type": "number"
            },
            "minItems" : 3,
            "maxItems" : 3,
            "default" : [ 1.0, 1.0, 1.0 ]
        },
        "translation" : {
            "type" : "array",
            "description" : "The node's translation.",
            "items" : {
                "type": "number"
            },
            "minItems" : 3,
            "maxItems" : 3,
            "default" : [ 0.0, 0.0, 0.0 ]
        }
    },
    "dependencies" : {
        "skeletons" : "skin",
        "skeletons" : "meshes",
        "skin" : "skeletons",
        "skin" : "meshes"
    },
    "additionalProperties" : false
}