The tile-converter is capable to convert 3D tiles data of formats 3DTiles and I3S. Both 3DTiles and I3S are wide specifications which include many internal formats and data types. The tile-converter doesn't cover all features described in those specifications. This sheet summarises the compatibility of the tile-converter with different parts and features of 3DTiles and I3S.
Layer types
| Specification | Layer type | Status |
|---|
I3S | 3D objects | Supported |
I3S | Integrated mesh | Supported |
I3S | Point | Not supported |
I3S | Point cloud | Not supported |
I3S | Building scene layer | It is possible to convert a single sublayer (if it is of 3D objects of Integrated mesh layer type) |
3DTiles | Batched 3D Model | Supported |
3DTiles | Instanced 3D Model | Not supported |
3DTiles | Point Cloud | Not supported |
3DTiles | Composite | Not supported |
| Specification | Data source type | Status |
|---|
I3S | SLPK | Supported as local HTTP service |
I3S | HTTP REST service | Supported |
3DTiles | Local file system folder | Supported |
3DTiles | Cesium ION URL | Supported |
Versions
| Specification | Version | Status |
|---|
I3S | 1.6, 1.7 | Supported only as input data |
I3S | 1.8 | Supported |
3DTiles | 1.0 | Supported |
3DTiles | vNext | Partial support (see 3DTiles vNext support) |
3DTiles | 1.1 | In progress |
3DTiles vNext support
Some 3DTiles vNext extensions are supported as input data.
| Belongs to | Extension | Status |
|---|
3DTiles | 3DTILES_content_gltf | Supported |
3DTiles | 3DTILES_multiple_contents | Not supported |
3DTiles | 3DTILES_implicit_tiling | Supported |
3DTiles | 3DTILES_bounding_volume_S2 | Supported |
3DTIles | 3DTILES_metadata | Not applicable for I3S |
glTF | EXT_mesh_features | Supported |
glTF | EXT_feature_metadata | Supported |
glTF | EXT_structural_metadata | Supported |
Internal data types
| Specification | Data type | Description | Status |
|---|
I3S | Draco | Compressed geometry | Supported |
3DTiles (glTF) | KHR_draco_mesh_compression | Draco Compressed geometry | Supported as input |
3DTiles (glTF) | EXT_meshopt_compression | Optimized geometry | Supported as input |
3DTiles (glTF) | KHR_texture_transform | UV coordinates transformation | Supported as input |
I3S, 3DTiles | PNG, JPEG | Texture formats | Supported |
I3S | KTX2 with Basis texture | Compressed texture format | Supported |
I3S | DDS | Compressed texture format | Supported as input |
3DTIles | KTX2 with Basis texture | Compressed texture format | Supported as input |
Mesh topology types
I3S specification supports only TRIANGLE mesh topology type.
| Specification | Mesh type | Status |
|---|
3DTiles | POINTS | Not applicable in I3S |
3DTiles | LINES | Not applicable in I3S |
3DTiles | LINE_LOOP | Not applicable in I3S |
3DTiles | LINE_STRIP | Not applicable in I3S |
3DTiles | TRIANGLES | Supported |
3DTiles | TRIANGLE_STRIP | Supported as input |
3DTiles | TRIANGLE_FAN | Not supported |