However, the main differences compared to commercial CAD systems are that the user can use the defined gestures only for modeling, after which they must send the saved macro file to a PC for
modifying or additional modeling. This workflow is a result of considering the characteristics of smart devices, as this is the first system design of a 3D CAD system on a smart device. An example of detail modeling and the related editing procedures are shown in
Figs. 7 and 8