{
    "$id": "https://schemas.3d.si.edu/voyager/common.schema.json",
    "$schema": "http://json-schema.org/draft-07/schema#",

    "title": "Math",
    "description": "Definitions for mathematical compound objects such as vectors and matrices.",

    "definitions": {
        "units": {
            "$id": "#units",
            "type": "string",
            "enum": [
                "inherit",
                "mm",
                "cm",
                "m",
                "km",
                "in",
                "ft",
                "yd",
                "mi"
            ]
        },
        "vector2": {
            "description": "2-component vector.",
            "$id": "#vector2",
            "type": "array",
            "items": {
                "type": "number"
            },
            "minItems": 2,
            "maxItems": 2,
            "default": [ 0, 0 ]
        },
        "vector3": {
            "description": "3-component vector.",
            "$id": "#vector3",
            "type": "array",
            "items": {
                "type": "number"
            },
            "minItems": 3,
            "maxItems": 3,
            "default": [ 0, 0, 0 ]
        },
        "vector4": {
            "description": "4-component vector.",
            "$id": "#vector4",
            "type": "array",
            "items": {
                "type": "number"
            },
            "minItems": 4,
            "maxItems": 4,
            "default": [ 0, 0, 0, 0 ]
        },
        "matrix3": {
            "description": "3 by 3, matrix, storage: column-major.",
            "$id": "#matrix3",
            "type": "array",
            "items": {
                "type": "number"
            },
            "minItems": 9,
            "maxItems": 9,
            "default": [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ]
        },
        "matrix4": {
            "description": "4 by 4 matrix, storage: column-major.",
            "$id": "#matrix4",
            "type": "array",
            "items": {
                "type": "number"
            },
            "minItems": 16,
            "maxItems": 16,
            "default": [ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 ]
        },
        "boundingBox": {
            "description": "Axis-aligned 3D bounding box.",
            "$id": "#boundingBox",
            "type": "object",
            "properties": {
                "min": {
                    "$ref": "#/definitions/vector3"
                },
                "max": {
                    "$ref": "#/definitions/vector3"
                }
            },
            "required": [
                "min",
                "max"
            ]
        }
    }
}