IntelliCAD. IntelliCAD e.g from AutoDSys can be used for modeling geometries for Odeon. IntelliCAD is a lighter and cheaper version of AutoCAD. We experience it as a better program for importing into Odeon. IntelliCAD is usually avaliable in a Standard and a Professional edition, we recommend the professional edition which includes solid modeling (ASIC). To benefit from this program you need to be or become an experienced 3D CAD modeller.