The 3D model has a hierarchical structure of Nodes, which are elements of the model.
For each node, there is a corresponding mesh, which contains the geometry of the object. Feature types become Nodes. Features become Meshes that may have geometries and attributes.
Coordinate System
Move to Local Coordinate System
Note that not all formats offer all the options described below.
- Yes: Coordinates of all the points in the written features will be normalized to the interval [-0.5, 0.5] on the largest side of their XYZ-bounding cube. The other dimensions will be scaled proportionally.
Additionally, the transformation matrix required to scale the model back to world coordinates will be written to a companion .fwt file. This can be used to improve precision of the written coordinates. The companion .fwt file will have the same name as the primary data file and will be written in the same folder. For folder-based formats, the file global.fwt will be written instead.
- No: The original coordinates will be written as provided. Coordinates will not be projected; .fwt world and .prj files will not be generated.
- Create Projection File Only: A companion .prj file containing the coordinate system and having the same name as the primary data file will be written in the same folder. For folder-based formats, the file global.prj will be written instead. Coordinates will not be projected and a world file will not be generated.
- Transform Coordinates Only: Transforms the coordinates as in the Yes option, but companion .prj and .fwt world files will not be generated.
Materials/Textures
Two-Sided Meshes
If the feature being read does not contain a valid 3ds material reference, the appearance on the individual face in the mesh will be set to FME’s default appearance. Any raster referenced as a texture in the 3ds file will be read by FME, as long as the source format is supported by FME.
If the feature being written does not contain a valid appearance reference, the default material will be assigned to the corresponding faces. If the feature contains a valid appearance reference, it will be written as faces referenced to a corresponding 3ds material.
A two-sided surface with matching appearance references will be written out as two-sided faces sharing one material in 3ds. Due to a limitation within 3ds, a two-sided surface with different appearance references will be written out as two one-sided faces with different materials.
If the incoming feature contains deprecated attributes such as material name (3ds_material), color (3ds_ambient_color, 3ds_diffuse_color, or 3ds_specular_color), or texture image (3ds_texture_image) information, a material with these properties will be created and assigned to the mesh corresponding to the feature.
Preferred Texture Format
Specifies the preferred format for associated texture files. This preference will be used as long as the specified format supports the properties of the texture raster; if not, it will be overridden.
In the default Auto mode, the writer chooses the best representation based on the incoming texture raster.
If the preferred format is ignored, a message is added to the log file. Possible reasons that the preference will be ignored include a lack of raster palette support, alpha channel support, or color depth support in the selected format.
Filename Options
Truncate Filename
Truncated filenames will be shortened to the first eight characters of the original name.