presentation4.json

{
    "@context": "http://iiif.io/api/presentation/4/context.json",
    "id": "https://example.org/iiif/3d/manifest",
    "type": "Manifest",
    "label": { "en": [ "I am 3D" ] },
  
    "behavior": [ "some", "new", "behaviors", "probably" ],
  
    "items": [
      {
        "id": "https://example.org/iiif/scene1",
        "type": "Scene",
        "label": { "en": [ "a scene!" ] },
        "duration": 600,
        "ambientLighting": {
            "type": "Lighting",
            "color": 256,
            "intensity": 1.0
        },

        "items": [
          {
            "id": "https://example.org/iiif/scene1/page/p1/1",
            "type": "AnnotationPage",
            "items": [
              {
                "id": "https://example.org/iiif/3d/anno1",
                "type": "Annotation",
                "motivation": ["painting"],
                "body": {
                    "type": "SpecificResource",
                    "source": [
                        {
                            "id": "https://example.org/iiif/my-model.someFormat",
                            "type": "Model",
                            "format": "application/something"
                        }
                    ],
                    "selector": [
                        {
                            "type": "WktSelector",
                            "value": "POLYGON(( 0 0 0, 1 0 0, 0 1 0, 0 0 1 ))"
                        }
                    ],
                    "transforms": [ 
                        {
                            "type": "ScaleTransform",
                            "x": 1.0,
                            "y": 1.1,
                            "z": 0.9
                        },
                        {
                            "type": "RotationTransform",
                            "x": 0.0,
                            "y": 45.0,
                            "z": 180.0
                        }
                    ],
                },
                "target": [
                    {
                        "type": "SpecificResource",
                        "source": [
                            {
                                "id": "https://example.org/iiif/scene1/page/p1/1",
                                "type": "Scene"
                            }
                        ]
                        "selector": [
                            {
                                "type": "PointSelector",
                                "x": 100.0,
                                "y": 100.0,
                                "z": 0.0
                            }
                        ]
                    }
                  ]
              }
            ]
          }
        ]
      }
    ],
  
    "structures": [ 
        // yep can do these too      
    ]
  }

On 3D TSG call = Timo Homburg says this should be POLYGONZ

https://gist.github.com/azaroth42/e3c6fc982cec1beb35627595697ade7e#file-presentation4-json-L42

https://gis.stackexchange.com/questions/206419/what-is-the-difference-between-a-polygon-z-and-a-polygon-zm