Element Selection of Three-Dimensional Objects in Virtual Reality

The manipulation of three dimensional objects is vital to fields such as engineering and architecture, but understanding 3D models from images on 2D screens takes years of experience. Virtual reality offers a powerful tool for the observation and manipulation of 3D objects by giving its users a sense of depth perception and the ability to reach through objects. To understand specific pain points in 2D CAD software, we conducted interviews and a survey of students and professionals with experience using CAD software. We narrowed in on the ability to select interior or obscured elements, and created a VR prototype allowing users to do so. Our usability tests found that compared to 2D software, VR was easier to use, more intuitive, and less frustrating, thought slightly more physically uncomfortable. Finally, we created a set of recommendations for VR CAD programs around action feedback, environmental context, and the necessity of a tutorial.