TetGen Writer Parameters

The TetGen writer allows the output format to be selected on a per-feature type basis. Supported formats are .poly and .smesh.

TetGen supports a separate .node file containing vertex information alongside .poly and .smesh files.

When selected, the writer will generate a separate .node file for all features written to this feature type, and the corresponding .poly or .smesh file will not contain vertex data.

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.