Computer-aided design import
The preferred method of geometric modeling is computer-aided design (CAD) import, where a CAD geometries file is imported by FDTD++. A number of CAD formats are supported, however that imported by FDTD++ must be in the I-DEAS UNV format. See the Section Geometries file for more information about this file. Below discusses the import of the CAD file into FDTD++.
Importing the CAD file
FDTDxx param mat geom.unv
where the last field specifies the CAD file.