{ "$schema":                  "https://json-schema.org/draft/2020-12/schema",
  "$id":                      "https://schemas.mpai.community/OSD/V1.5/data/Orientation.json",
  "title":                    "Object Orientation V1.5",
  "type":                     "object",
  "additionalProperties":     false,
  "required":                 [ "Header", "OrientationID", "Orientation" ],
  "properties":               {

    "Header":                 { "type": "string", "pattern": "^OSD-OOR-V[0-9]{1,2}[.][0-9]{1,2}$", "description": "Orientation Header – Standard OSD-OOR-Vx.y" },
    "MInstanceID":            { "type": "string", "description": "Identifier of the M-Instance (Virtual Space) where this Orientation refers to." },
    "UEnvironmentID":         { "type": "string", "description": "Identifier of the U-Environment (Real Space) where this Orientation refers to." },
    "OrientationID":          { "type": "string", "description": "Unique identifier of this Object Orientation instance." },
    "OrientationTime":        { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SimpleTime.json", "description": "Time this Orientation instance was produced." },

    "OrientationSpaceTime":   { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SimpleTime.json", "description": "Space/Time where/when this Orientation applies." },

    "General":                { "type": "object", "additionalProperties": false, "description": "General classification data of the Object.", "properties": {
      "ObjectType":           { "$ref": "https://schemas.mpai.community/TFA/V1.5/types/ObjectTypes.json", "description": "Type of the Object: one of Digital Human, Generic." },
      "MediaType":            { "$ref": "https://schemas.mpai.community/TFA/V1.5/types/MediaTypes.json", "description": "Media type of the Object: one of Speech, Audio, Visual, Audio-Visual, Haptic, Smell, RADAR, LiDAR, Ultrasound." } } },

    "Orientation":            { "type": "array", "minItems": 3, "maxItems": 3, "items": { "type": "number" },
                                "description": "Euler angles (α, β, γ) representing the Object's orientation (degrees)." },
    "OrientAccuracy":         { "type": "array", "minItems": 3, "maxItems": 3, "items": { "type": "number" },
                                "description": "Estimated accuracy of each Euler angle (α, β, γ) in Orientation (degrees)." },
    "OrientVelocity":         { "type": "array", "minItems": 3, "maxItems": 3, "items": { "type": "number" },
                                "description": "Angular velocity of the Object's orientation (α, β, γ) (degrees/s)." },
    "OrientVelocityAccuracy": { "type": "array", "minItems": 3, "maxItems": 3, "items": { "type": "number" },
                                "description": "Estimated accuracy of each angular velocity component (α, β, γ) (degrees/s)." },
    "OrientAccel":            { "type": "array", "minItems": 3, "maxItems": 3, "items": { "type": "number" },
                                "description": "Angular acceleration of the Object's orientation (α, β, γ) (degrees/s²)." },
    "OrientAccelAccuracy":    { "type": "array", "minItems": 3, "maxItems": 3, "items": { "type": "number" },
                                "description": "Estimated accuracy of each angular acceleration component (α, β, γ) (degrees/s²)." },

    "DataXMData":             { "$ref": "https://schemas.mpai.community/PTF/V1.0/data/DataExchangeMetadata.json",
                                "description": "MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this Orientation instance in a trusted data exchange context." },
    "DescrMetadata":          { "type": "string", "maxLength": 2048, "description": "Human-readable descriptive metadata of the Orientation instance (plain text, max 2048 characters)." } } }