1 Definition
A Data Type including the 3D Model Qualifiers and the Space-Time arrangement of a 3D Model Scene.
2 Functional Requirements
3D Model Scene Geometry includes:
- The ID of a Virtual Space where they are or will be located.
- The ID of the 3D Model Scene Geometry.
- The number of 3D Model Objects in the Scene.
- The 3D Model Scene Space-Time info.
- The 3D Model Objects including, for each 3D Model Object:
- The 3D Model Object Space-Time.
- The 3D Model Qualifier.
3 Syntax
https://schemas.mpai.community/MMC/V2.2/data/3DModelSceneGeometry.json
4 Semantics
Label | Size | Description |
Header | N1 Bytes | 3D Model Scene Geometry Header |
– Standard-3DModelSceneGeometry | 9 Bytes | The characters “MMC-3SG-V” |
– Version | N2 Bytes | Major version – 1 or 2 characters |
– Dot-separator | 1 Byte | The character “.” |
– Subversion | N3 Bytes | Minor version – 1 or 2 characters |
MInstanceID | N4 Bytes | Identifier of M-Instance. |
3DModelSceneGeometryID | N5 Bytes | Identifier of the 3D Model Scene. |
3DModelSceneSpaceTime | N6 Bytes | 3D Model Scene’s Space-Time. |
3DModelDataCount | N7 Bytes | Number of 3D Model Data in Scene. |
3DModelDataGeometryData[] | N8 Bytes | Data of 3D Model Data in Scene. |
– 3DModelDataSpaceTime | N9 Bytes | Space-Time info of 3D Model Data. |
– 3DModelQualifiers | N10 Bytes | 3D Model Qualifiers. |
3DModelSubSceneCount | N11 Bytes | Number of 3D Model Sub-Scenes in Scene. |
3DModelSubSceneGeometryData[] | N12 Bytes | Data of 3D Model Sub-Scene Geometry. |
– 3DModelSubSceneSpaceTime | N13 Bytes | Space-Time info of 3D Model Sub-Scene. |
DescrMetadata | N115Bytes | Descriptive Metadata. |
5 Conformance Testing
A Data instance Conforms with MPAI-PAF V1.3 3D Model Scene Geometry (MMC-3SG) if:
- The Data validates against the 3D Model Scene Geometry’ JSON Schema.
- All Data in the 3D Model Scene Geometry’ JSON Schema
- Have the specified type.
- Validate against their JSON Schemas.
- Conform with their Data Qualifiers if present.
6 Performance Assessment