Supported File Formats
F3D supports the following file formats:
| Name | File Extension(s) | Full scene | Animation Supported? | Plugin | Reader Name |
|---|---|---|---|---|---|
| Legacy VTK | .vtk | No | No | native | VTKLegacy |
| VTK XML | .vtp, .vtu, .vtr, .vti, .vts, .vtm | No | No | native | VTKXMLVT<P,U,R,I,S,M> |
| VTKHDF | .vtkhdf | No | Yes | hdf | VTKHDF |
| EXODUS II | .e, .ex2, .exo, .g | No | Yes | hdf | ExodusII |
| Polygon File Format | .ply | No | No | native | PLYReader |
| Standard Triangle Language | .stl | No | No | native | STL |
| DICOM | .dcm | No | No | native | DICOM |
| NRRD (“nearly raw raster data”) | .nrrd, .nhdr | No | No | native | Nrrd |
| MetaHeader MetaIO | .mhd, .mha | No | No | native | MetaImage |
| Tag Image File Format 2D/3D | .tif, .tiff | No | No | native | TIFF |
| QuakeMDL | .mdl | Yes | Yes | native | QuakeMDL |
| CityGML | .gml | No | No | native | CityGML |
| Point Cloud | .pts | No | No | native | PTS |
| Standard for the Exchange of Product Data | .step, .stp, .stpnc, .p21, .210 | No | No | occt | STEP |
| Initial Graphics Exchange Specification | .iges, .igs | No | No | occt | IGES |
| Open CASCADE Technology BRep format | .brep | No | No | native | BREP |
| Open CASCADE Technology XBF format | .xbf | No | No | occt | XBF |
| Alembic | .abc | No | Yes | alembic | Alembic |
| Wavefront OBJ | .obj | Yes | Yes | native | OBJ |
| GL Transmission Format | .gltf, .glb | Yes | Yes | native | GLTF, GLTFDraco |
| Draco | .drc | No | No | draco | Draco |
| Autodesk 3D Studio | .3ds | Yes | No | native | 3DS |
| Virtual Reality Modeling Language | .wrl, .vrml | Yes | No | native | VRMLReader |
| Autodesk Filmbox | .fbx | Yes | Yes | assimp | FBX |
| COLLADA | .dae | Yes | Yes | assimp | COLLADA |
| Object File Format | .off | Yes | No | assimp | OFF |
| Drawing Exchange Format | .dxf | Yes | No | assimp | DXF |
| DirectX | .x | Yes | Yes | assimp | DirectX |
| 3D Manufacturing Format | .3mf | Yes | No | assimp | 3MF |
| Universal Scene Description | .usd, .usda, .usdc, .usdz | Yes | Yes | usd | USD |
| VDB | .vdb | No | No | vdb | VDB |
| 3D Gaussian splatting | .splat | No | No | native | Splat |
| Compressed 3D Gaussian splatting | .spz | No | No | native | SPZ |
Reader options
Readers can provide option that can be set using the -D/--define command line option. eg: -DVDB.downsampling_factor=0.5.
For booleans, 0 means false, not 0 means true. Unsigned int will interpret anything that is not a non-negative integer as the default value.
| File extension | Option Name | Argument Type | Description |
|---|---|---|---|
vdb | VDB.downsampling_factor | double | Control the level of downsampling when reading a volume, default is 0.1. |
occt | STEP.linear_deflection | double | Control the distance between a curve and the resulting tessellation, default is 0.1. |
occt | STEP.angular_deflection | double | Control the angle between two subsequent segments, default is 0.5. |
occt | STEP.relative_deflection | bool | Control if the deflection values are relative to object size, default is false. |
occt | STEP.read_wire | bool | Control if lines should be read, default is true. |
occt | IGES.linear_deflection | double | Control the distance between a curve and the resulting tessellation, default is 0.1. |
occt | IGES.angular_deflection | double | Control the angle between two subsequent segments, default is 0.5. |
occt | IGES.relative_deflection | bool | Control if the deflection values are relative to object size, default is false. |
occt | IGES.read_wire | bool | Control if lines should be read, default is true. |
occt | BREP.linear_deflection | double | Control the distance between a curve and the resulting tessellation, default is 0.1. |
occt | BREP.angular_deflection | double | Control the angle between two subsequent segments, default is 0.5. |
occt | BREP.relative_deflection | bool | Control if the deflection values are relative to object size, default is false. |
occt | BREP.read_wire | bool | Control if lines should be read, default is true. |
occt | XBF.linear_deflection | double | Control the distance between a curve and the resulting tessellation, default is 0.1. |
occt | XBF.angular_deflection | double | Control the angle between two subsequent segments, default is 0.5. |
occt | XBF.relative_deflection | bool | Control if the deflection values are relative to object size, default is false. |
occt | XBF.read_wire | bool | Control if lines should be read, default is true. |
mdl | QuakeMDL.skin_index | unsigned int | Select a particular skin from a mdl file. Uses 0-indexing, default is 0. |
Format details
QuakeMDL
- Models texture are loaded with a simple PBR lighting (diffuse color only, no specular, index of refraction set to 1.0).
- Selecting
skinis not supported. - Loading
groupskinis not supported. - Animation frames are split based on their names, eg:
stand1,stand2,stand3,run1,run2,run3.