
351Recent Advances in Augmented Reality for AEC Applications
In order to create a viewing frustum with the user’s eye at the center of the projection,
using the procedure described in Section14.3.2.1, user’s positional and head orienta-
tion data are continuously obtained and processed. Details of the tracking devices
used to achieve this are also described in Section 14.3.2.1.
Despite the fact that the ARVISCOPE authoring language is powerful enough to
describe the complexities involved in a typical construction operation, the syntax of
the language is not very complex. Based on their functionality, ARVISCOPE lan-
guage statements are grouped ...