big tings

registry/schema-org/3DModel.schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "schema:3DModel",
+  "title": "3DModel",
+  "description": "A 3D model represents some kind of 3D content, which may have [[encoding]]s in one or more [[MediaObject]]s. Many 3D formats are available (e.g. see [Wikipedia](https://en.wikipedia.org/wiki/Category:3D_graphics_file_formats)); specific encoding formats can be represented using the [[encodingFormat]] property applied to the relevant [[MediaObject]]. For the\ncase of a single file published after Zip compression, the convention of appending '+zip' to the [[encodingFormat]] can be used. Geospatial, AR/VR, artistic/animation, gaming, engineering and scientific content can all be represented using [[3DModel]].",
+  "type": "object",
+  "allOf": [
+    {
+      "description": "A media object, such as an image, video, audio, or text object embedded in a web page or a downloadable dataset i.e. DataDownload. Note that a creative work may have many media objects associated with it on the same web page. For example, a page about a single song (MusicRecording) may have a music video (VideoObject), and a high and low bandwidth audio stream (2 AudioObject's).",
+      "$ref": "schema:MediaObject"
+    }
+  ],
+  "properties": {
+    "isResizable": {
+      "description": "Whether the 3DModel allows resizing. For example, room layout applications often do not allow 3DModel elements to be resized to reflect reality.",
+      "type": "boolean"
+    }
+  }
+}