{ "$id":                          "https://schemas.mpai.community/OSD/V1.5/data/Basic3DModelSceneDescriptors.json",
  "$schema":                      "https://json-schema.org/draft/2020-12/schema",
  "title":                        "Basic 3D Model Scene Descriptors V1.5", "type": "object", "required": [ "Header", "MInstanceID",
                                  "Basic3DModelSceneDescriptorsID", "Basic3DModelSceneDescriptorsSpaceTime", "3DModelObjectCount", 
                                  "Basic3DModelSceneDescriptors" ], "additionalProperties": false, "properties":                   {
    "Header":                     { "type": "string", "pattern": "^OSD-B3SD-V[0-9]{1,2}[.][0-9]{1,2}$" },
    "MInstanceID":                { "type": "string" },

    "Basic3DModelSceneDescriptorsID": { "type": "string" },
    "GravityValue":               { "type": "number" },
    "Basic3DModelSceneDescriptorsSpaceTime": { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },
    
    "3DModelObjectCount":         { "type": "integer", "minimum": 0 },

    "Basic3DModelSceneDescriptors":{ "type": "array", "items": { "$anchor": "Basic3DModelSceneItem", "type": "object", 
                                    "additionalProperties": false, "required": [ "ObjectIDOrObject", "PointOfView" ], 
                                    "properties": {
      "3DModelObjectSpaceTime":        { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },
      "3DModelObjectIDOr3DModelObject":{ "$ref": "#/$defs/ObjectIDOrObject" },
      "3DModelSceneEnrichment":        { "type": "array", "items": { "$ref": "#/$defs/3DModelSceneEnrichment" } },
      "Annotations":                   { "type": "array", "items": { "$ref": "#/$defs/Annotations" } },
      "PointOfView":                   { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/PointOfView.json" } } } },

    "Rights":                     { "$ref": "#/$defs/Rights" },
    "DataExchangeMetadata":       { "$ref": "https://schemas.mpai.community/AIF/V3.0/data/DataExchangeMetadata.json" },
    "Trace":                      { "$ref": "https://schemas.mpai.community/AIF/V3.0/data/Trace.json" },
    "DescrMetadata":              { "type": "string", "maxLength": 2048 } },

  "$defs":                        {

    "Annotations":                  { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "AnnotationIDOrAnnotation", "AnnotationTimeSpace" ], "properties": {
      "AnnotationIDOrAnnotation":   { "type": "array", "minItems": 1, "maxItems": 1, "items": { "oneOf": [ { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/Annotation.json" }, { "type": "string" } ] } },
      "AnnotationTimeSpace":        { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SpaceTime.json" },
      "AnnotationRights":           { "$ref": "#/$defs/Rights" } } } },

    "ObjectIDOrObject":           { "type": "array", "minItems": 1, "maxItems": 1, "items": { "oneOf": [ { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/3DModelObject.json" }, { "type": "string" } ] } },

    "3DModelSceneEnrichment":     { "type": "object", "additionalProperties": false, "properties": {
      "EnrichmentTrace":          { "$ref": "https://schemas.mpai.community/AIF/V3.0/data/Trace.json" },
      "Depth":                    { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/Depth.json" },
      "OcclusionFlag":            { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/OcclusionFlag.json" },
      "InteractionPotential":     { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/InteractionPotential.json" },
      "SalienceScore":            { "$ref": "https://schemas.mpai.community/OSD/V1.5/data/SalienceScore.json" } } },

    "Rights":                     { "type": "array", "minItems": 1, "items": { "oneOf": [ 
      { "$ref": "https://schemas.mpai.community/MMM4/V2.2/data/Right.json" }, 
      { "type": "string" } ] } } } }