Settings
This will save differences to the open USD file in a new USD level in the file defined here.
USD basically recognizes these three file formats (all three are read and written in Cinema 4D), which can be selected here:
- *.usda: USD files in ASCII format (readable in a text editor)
- *.usdc: USD files in binary format (are saved and read faster), often referred to simply as *.usd.
- *.usdz: Zipped usda/usdc files (this format can pack all other referenced USD files and textures into a single, however uncompressed, Zip file; Note that a USD Bridge can often not be established with these types of files.
Enable this option if you want to export geometry. USD supports several Primitives natively (such as Cube, Sphere, Cone, etc.). However, only with basic setting such as Size, Radius, Height, etc. If you want to export other properties (such as subdivision values), the Primitives must be made editable prior to export. Geometry meshes will be exported correctly (as triangles/quads with Normals, UVs or display color).
The activated option ensures that all cameras will be exported. These camera settings will be transferred to USD: Projection (Parallel and Perspective views, all other Cinema 4D views will be exported as Perspective view), Focal Length, Sensor Size, Field of View (vertical), Film Offset X/Y, Focal Distance, F-Stop, Near/Far Clipping.
Instance-objects can now also be exported as USD instances (multi-instances are not supported).
Use this selection menu to define whether Node materials located on an object should be exported.
Please not that materials will only be approximated when exchanged with different applications/formats. There is no guarantee that they will be identical. The applications and the material definitions simply differ too much.
You can choose from the following options:
- None: No materials are exported.
- Export: Exports Node Materials.
- Export & bridge: This option is only relevant when calling up the Update USD changes command. If you make changes to the imported Node Material and call up the aforementioned command, this option decides whether this material change is overwritten in the USD file.
If this option is activated, the common light types such as point, spot, area light and infinite light can be exported.
Polygon lights will be exported.
You can select the following options:
- None: No light sources are exported.
- Nit: Exports light sources and defines their intensity in Nit (candela per square meter). This is useful if you want to export to the Renderman world or Omniverse. Otherwise, select the next option Candela.
- Candela: Exports light sources and defines their intensity in Candela.